CN201402864Y

CN201402864Y - Full screened IEC joint

Info

Publication number: CN201402864Y
Application number: CN2009200553199U
Authority: CN
Inventors: 吴明村; 游焕明; 贺军; 何黎明
Original assignee: ZHONGSHAN JESMAY ELECTRONIC CO Ltd
Current assignee: ZHONGSHAN JESMAY ELECTRONIC CO Ltd
Priority date: 2009-04-24
Filing date: 2009-04-24
Publication date: 2010-02-10
Anticipated expiration: 2019-04-24

Abstract

The utility model aims at providing a full screened IEC joint which is firm in structure, reliable in performance and convenient to product. The joint comprises a barrel-shaped metal housing with twoopening ends and a plastic core mounted in the metal housing; metal pin cores are perforated in the middle of the plastic core; and the head end of the metal pin core is a columnar plug or a cavity-like lock slot. The joint is characterized by further comprising a plastic rear plug fixedly mounted in the metal housing and a metal switch-over pin perforated in the middle of the plastic rear plug, wherein one end of the switch-over is elastically connected with the tail end of the metal pin core and the other end is an adaptor that can be elastically connected with an inner conductor of the shielding line. The full screened IEC joint has firm structure and reliable performance, and improves the resistance stability of the joint and the reflection property of the processed cables under full screened condition of the joint, thereby ensuring better practicality.

Description

A kind of Fully-shielded IEC tie-in

Technical field

The utility model relates to a kind of joint, particularly meets the full-shield joint of IEC 61169-2 standard.

Background technology

As shown in Figure 1, 2, traditional joint that meets IEC 61169-2 standard comprises plastic core 1, metal shell 2 and metal nook closing member 3, earlier plastic core 1 and sidewall are had metal shell 2 assemblings of hole for injecting glue 4 during production, then the inner wire and the metal nook closing member 3 of coaxial cable are riveted, again metal nook closing member 3 is passed plastic core 1, in the afterbody injection moulding of metal shell 2, make finished product at last.Such finished product cable is through advancing glue in the joint after the injection moulding, and different plastic mediums and nook closing member riveted joint distortion can cause that characteristic impedance variation and reflection index descend about 3～5dB; The moment of torsion of metal nook closing member 3 is less, and often plug twists easily, causes structural instability between the inner wire of coaxial cable and the metal nook closing member 3, influences performance; Therefore the inner wire of different coaxial cables is different, needs the metal nook closing member 3 of different uropores, cause intra-company's COM code lengthy and tedious, produce inconvenient.

The utility model content

The purpose of this utility model is to propose a kind of Stability Analysis of Structures, dependable performance, Fully-shielded IEC tie-in convenient for production.

Fully-shielded IEC tie-in of the present utility model comprises the metal shell and the plastic core that is installed in the metal shell of the tubular of both ends open, the middle part of described plastic core is run through and is provided with the metal nook closing member, the head end of described metal nook closing member is the plug of column or the jack of vestibule shape, key is that this joint also comprises plug behind the plastic cement that is fixedly mounted in the metal shell and runs through the metal switching pin that is installed in plug middle part behind the plastic cement, one end of described switching pin is connected with the tail end elasticity of metal nook closing member, and the other end is the adapter that can be connected with the inner wire elasticity of shielding conductor.

Switching pin in the joint is connected with the inner wire elasticity of metal nook closing member, shielding conductor respectively, not only can effectively avoid guaranteeing the stable performance of joint because of metal nook closing member twist the metal nook closing member that causes and the inner wire loose contact of shielding conductor; Also make different coaxial cables can be installed in, reduced kind, the model of metal nook closing member, make that handling of goods and materials is simple more, it is convenient to produce with on a kind of metal needle core; To transfer pin and metal shell of plug fixed behind the plastic cement, form certain cushioning effect, make the structural stability between the inner wire of shielding conductor of metal nook closing member and rear end can not interact, even the inner wire of metal nook closing member or shielding conductor takes place loosening, because the switching pin is fixed, so can not have influence on the other end, can further guarantee the stability of structure and performance; Because metal shell of the present utility model is different with traditional structure, hole for injecting glue is not set at sidewall, therefore when injection moulding, plastic cement can not enter into the inside of joint, can not take place to change and the decline of reflection index because of the characteristic impedance that the nook closing member distortion causes, and guaranteed that signal can not leak, improved the degree of screening performance of finished product cable.

The serve as reasons tubaeform adapter of the hollow that many rubber-like bonding jumpers extend out gradually, extend and constitute to the end of the two ends of described metal switching pin, the tail end of described metal nook closing member is provided with the uropore of indent, and the adapter of described switching pin one end inserts the uropore of metal nook closing member.The adapter at switching pin two ends is made of elastic sheet metal, has the indeformable characteristic of the self structure of maintenance, can be used with the inner wire of existing metal nook closing member and shielding conductor, and is compatible better.The switching pin is with after the inner wire of metal nook closing member, shielding conductor is connected, and adapter can rely on the effect of self elastic force to make the switching pin keep closely contacting with the inner wire of metal nook closing member, shielding conductor all the time, and the switching performance of assurance joint is stablized.

Described metal nook closing member and plastic core are integral structure, can make by the method for injection moulding on the needle body of metal nook closing member, and be not only convenient for production, and Stability Analysis of Structures, and torsional property is strong.

The position that the needle body of described metal nook closing member combines with plastic core has one side at least for the plane, can prevent from like this to rotate after the injection moulding of metal nook closing member, has increased the moment of torsion of metal nook closing member.

Described metal shell is provided with the concave point that is used for fixing plastic core at the position corresponding to plastic core; The concave point that fill in after being provided with and being used for fixing plastic cement at the position that described metal shell is filled in after corresponding to plastic cement is filled in after fixing plastic core, plastic cement by the mode that concave point is set, and is not only convenient for production, and structure is firm, good fixing effect.

The scheme of further optimization of the present utility model is: Fully-shielded IEC tie-in is connected with shielding conductor, described shielding conductor comprises outer shielding layer and the inner wire that is wrapped up by outer shielding layer, the metal shell of joint links to each other with the outer shielding layer of shielding conductor, and the switching pin of joint is connected with the inner wire elasticity of shielding conductor.

The junction injection moulding of above-mentioned joint and shielding conductor forms an integral body, makes the structure of joint and shielding conductor more firm.

Fully-shielded IEC tie-in of the present utility model is filled in after switching pin and plastic cement are set, make that joint design is firm, dependable performance, under the condition that satisfies the joint full-shield, joint impedance stability and finished product cable have been improved through the reflection index after processing, practicality is better, is worth promoting on a large scale.

Description of drawings

Fig. 1 is a conventional I EC joint design exploded view;

Fig. 2 is the structure cutaway view that conventional I EC joint is connected with shielding conductor;

Fig. 3 is the IEC joint design exploded view of embodiment 1;

Fig. 4 is the IEC joint design cutaway view of embodiment 1;

Fig. 5 is the IEC joint front view of embodiment 1;

Fig. 6 is the structure cutaway view that the IEC joint of embodiment 2 is connected with shielding conductor;

Fig. 7 is the product front view that the IEC joint of embodiment 2 combines with shielding conductor;

Fig. 8 is the product front view that the IEC joint of embodiment 3 combines with shielding conductor;

Fig. 9 is the product front view that the IEC joint of embodiment 4 combines with shielding conductor.

Embodiment

Describe the utility model in detail below in conjunction with specific embodiments and the drawings.

Embodiment 1:

Shown in Fig. 3,4,5,6, the Fully-shielded IEC tie-in of present embodiment, comprise the tubular of both ends open metal shell 5, be installed in plug 4 behind plastic core 2 in the metal shell 5, the plastic cement and run through the switching pin 3 that is installed in plug 4 middle parts behind the plastic cement, the middle part of plastic core 2 is run through and is provided with metal nook closing member 1, the two ends of the switching pin 3 tubaeform adapter that many copper bars extend out gradually, extend and constitute to the end of serving as reasons, the front end adapter of described switching pin inserts the uropore of metal nook closing member 1.

Above-mentioned metal nook closing member 1 and plastic core 2 are integral structure, can make by the method for injection moulding on the needle body of metal nook closing member, and be not only convenient for production, and Stability Analysis of Structures, and torsional property is strong.

The position that the needle body of above-mentioned metal nook closing member 1 combines with plastic core 2 has one side at least for the plane, can prevent from like this to rotate after the injection moulding of metal nook closing member, has increased the moment of torsion of metal nook closing member 1.

Above-mentioned metal shell 5 is provided with the concave point that is used for fixing plastic core 2 at the position corresponding to plastic core 2; The concave point of plug 4 after the position of plug 4 is provided with and is used for fixing plastic cement after corresponding to plastic cement fills in 4 after fixing plastic core 2, plastic cement by the mode that concave point is set, and is not only convenient for production, and structure is firm, good fixing effect.

Embodiment 2:

As shown in Figure 6, as different from Example 1, the Fully-shielded IEC tie-in of present embodiment is connected with shielding conductor 7, and described shielding conductor 7 comprises outer shielding layer and the inner wire that is wrapped up by outer shielding layer, in the cavity of the rear end adapter of the inner wire insertion switching pin 3 of shielding conductor 7, realize that elasticity connects; Metal shell 5 is connected with the outer shielding layer of shielding conductor 7.

As shown in Figure 7, the other end of the shielding conductor of present embodiment also is connected with a Fully-shielded IEC tie-in among the embodiment 1, and the head end of the metal nook closing member in the Fully-shielded IEC tie-in at present embodiment two ends is the plug of column.

The joint production process of present embodiment is as follows: have one side on the needle body of metal nook closing member 1 at least and be the plane, by locating injection mo(u)lding on the plane of metal nook closing member 1 needle body is the plastic core 2 and the metal nook closing member 1 of integral type, the adapter of pin 3 front ends of will transferring then is inserted in the jack of metal nook closing member 1, and fill in 4 fixed transfer pins 3 after utilizing plastic cement, at last with metal nook closing member 1, plastic core 2, the plug 4 nook closing member assemblies that the constituted metal shell 5 of packing into behind switching pin 3 and the plastic cement, and at metal shell 5 corresponding to plastic core 2, the position symmetry of plug 4 is got ready fixedly to fill in 4 behind plastic core 2 and the plastic cement behind the plastic cement, in the cavity of the last pins 3 rear end adapters of again inner wire 6 insertions of shielding conductor being transferred, the outer shielding layer of shielding conductor is connected with metal shell 5, and with the junction injection moulding of metal shell 5 with shielding conductor, form integrative-structure, finish the joint assembling.

Present embodiment adopts two ends to have the switching pin 3 of elastic construction, make different coaxial cables can be installed in on a kind of metal needle core 1, applicable to the coaxial cable of inner wires such as 3C-2V, 4C-2V, RG59, RG6 less than φ 1.2mm, reduce kind, the model of metal nook closing member 1, made handling of goods and materials simpler; Switching pin 3 all is an Elastic Contact with the inner wire 6 of metal nook closing member 1 and shielding conductor, can effectively avoid guaranteeing that because of twist inner wire 6 loose contacts of the metal nook closing member 3 that causes and shielding conductor of metal nook closing member 3 characteristic impedance of joint is stable; Because metal shell 5 of the present utility model is different with traditional structure, hole for injecting glue is not set at sidewall, therefore when injection moulding, plastic cement can not enter into the inside of joint, can not take place to change and the decline of reflection index because of the characteristic impedance that the nook closing member distortion causes, and guaranteed that signal does not leak, improved about finished product cable process injection moulding back reflection index 5dB.

Embodiment 3:

As shown in Figure 8, different with the foregoing description 2 is that the head end of the metal nook closing member in the Fully-shielded IEC tie-in at present embodiment two ends is respectively the plug of column and the jack of vestibule shape.

Embodiment 4:

As shown in Figure 9, different with the

foregoing description

2,3 is that the head end of the metal nook closing member in the Fully-shielded IEC tie-in at present embodiment two ends is the jack of vestibule shape.

The

foregoing description

2,3,4 can be used, and has widened the scope of application of product of the present utility model.

Claims

1, a kind of Fully-shielded IEC tie-in, the metal shell and the plastic core that is installed in the metal shell that comprise the tubular of both ends open, the middle part of described plastic core is run through and is provided with the metal nook closing member, the head end of described metal nook closing member is the plug of column or the jack of vestibule shape, it is characterized in that this joint also comprises plug behind the plastic cement that is fixedly mounted in the metal shell and runs through the metal switching pin that is installed in plug middle part behind the plastic cement, one end of described switching pin is connected with the tail end elasticity of metal nook closing member, and the other end is the adapter that can be connected with the inner wire elasticity of shielding conductor.

2, Fully-shielded IEC tie-in according to claim 1, the serve as reasons tubaeform adapter of the hollow that many rubber-like bonding jumpers extend out gradually, extend and constitute to the end of the two ends that it is characterized in that described metal switching pin, the tail end of described metal nook closing member is provided with the uropore of indent, and the adapter of described switching pin one end inserts the uropore of metal nook closing member.

3, Fully-shielded IEC tie-in according to claim 1 is characterized in that described metal nook closing member and plastic core are integral structure.

4, Fully-shielded IEC tie-in according to claim 3 is characterized in that the position that the needle body of described metal nook closing member combines with plastic core has at least one side to be the plane.

5, Fully-shielded IEC tie-in according to claim 1 is characterized in that described metal shell is provided with the concave point that is used for fixing plastic core at the position corresponding to plastic core.

6, Fully-shielded IEC tie-in according to claim 1 is characterized in that position that described metal shell is filled in after corresponding to plastic cement is provided with the concave point of filling in after being used for fixing plastic cement.

7, according to the described Fully-shielded IEC tie-in of above arbitrary claim, it is characterized in that this joint is connected with shielding conductor, described shielding conductor comprises outer shielding layer and the inner wire that is wrapped up by outer shielding layer, the metal shell of joint links to each other with the outer shielding layer of shielding conductor, and the switching pin of joint is connected with the inner wire elasticity of shielding conductor.

8, Fully-shielded IEC tie-in according to claim 7 is characterized in that the junction injection moulding of described joint and shielding conductor forms an integral body.