CN2899190Y

CN2899190Y - D-type filter adapter

Info

Publication number: CN2899190Y
Application number: CNU2006200338517U
Authority: CN
Inventors: 肖雨来
Original assignee: Xinxinshenfeng Electronics Science And Technology Co Ltd Chengdu
Current assignee: Xinxinshenfeng Electronics Science And Technology Co Ltd Chengdu
Priority date: 2006-04-17
Filing date: 2006-04-17
Publication date: 2007-05-09
Anticipated expiration: 2016-04-17

Abstract

The utility model discloses a D-type filter adapter, comprising a cover (1) and a capacitor (2), wherein, the capacitor (2) is located in the cover, and a grounding board (3) is connected between the cover (1) and the capacitor (2), a pin hole (4) is at the front part of the capacitor (2), and a pin (5) is at the rear part of the capacitor, a plastic fore core (6) is arranged in the gap between the inner fore part of the cover and the outer of the pin hole, filling materials (7) are filled in other gap in the cover. The D-type filter adapter of the utility model gives the adapter a good electromagnetic sealing according to the filtering principle, and the filling material in the gap in the cover gives a good environment sealing.

Description

D type filter adapter

Technical field

The utility model relates to adapter, especially relates to a kind of D type filter adapter.

Background technology

When large-scale electronics or communications facility were installed, in order to dismantle with easy for installation, people often adopted system connector to be connected with system, parts with the coupling part of parts, and commonly used is D connector, as shown in Figure 1.Because a lot of parts of large-scale electronics or communications facility all can produce conducted interference and radiated interference, common electric connector has solved the transmission problem of signal, and can't satisfy electromagnetic compatibility requirements.Therefore, in actual use, D connector at first will solve the problem of Electromagnetic Compatibility.

At present, D connector usually adopts the method for filtering to realize Electro Magnetic Compatibility.Filtering be exactly exit exposed before the cabinet outside filtering conducted interference signal, thereby reach the purpose of electromagnetic compatibility.On cabinet, add feed-through filter, but the filtering conducted interference signal, as shown in Figure 2.Each root lead-out wire all will add a feed-through filter, and a D connector often just needs a plurality of feed-through filters.And in a large scale system, generally not only D connector again so just needs more feed-through filter to form array, just need take bigger space.And bigger space is not easy to guarantee the electric continuity of electromagnetic shielding needs, easily causes the electromagnetic compatibility failure.And this structure is extremely inconvenient, time-consuming more when dismounting and installation.

Summary of the invention

The purpose of this utility model provides a kind of Electro Magnetic Compatibility D type filter adapter good He convenient to use.

In order to achieve the above object, the utility model adopts following technical scheme: D type filter adapter comprises shell and capacitor.Wherein capacitor is positioned at enclosure, has ground plate to link to each other between shell and capacitor.The front end of capacitor lead wire is a pin hole, and the rear end is a syringe needle.The front end of portion, the outer gap of pin hole are core before the plastics in the enclosure, and other gap of portion is filled with inserts in the enclosure.

Described capacitor is porcelain Jie tubular capacitor or porcelain Jie disk capacitor.

The capacitance of described porcelain Jie tubular capacitor is 5-10000pF.

The capacitance of described porcelain Jie disk capacitor is 5-100000pF.

The surface of described pin hole and syringe needle is coated with layer of metal such as gold etc.

The utility model D type filter adapter has the metal shell of sealing, and space in the enclosure is filled with inserts, reaches good environmental sealing effect; In actual applications, D type filter adapter is contained on the casing, connects sealing D type cellular type connector and sealing D type pin type connector at the two ends of D type adapter more respectively; Between D type filter adapter and casing, add simultaneously a conductive gasket, electric conductivity and sealing property between connector and the casing are improved, interference signal can not give off outside the system to casing by D type filter adapter, thereby has realized electromagnetic sealing and environmental sealing.In addition, porcelain Jie tubular capacitor or porcelain Jie disk capacitor have been adopted in the utility model D type adapter inside, and each root exit has all passed through Filtering Processing, do not need to resemble that each lead-in wire adds a filter traditional D shape connector.D type filter adapter had both satisfied Electro Magnetic Compatibility and environmental suitability, made the structure of entire connection portion more simple again, and was more efficient and convenient when dismounting and installation.

Description of drawings

Fig. 1 is the structural representation of traditional D connector;

Fig. 2 is that traditional D connector adopts filtering to realize the structural representation of electromagnetic compatibility;

Fig. 3 is a structural representation of the present utility model;

Fig. 4 is a kind of mounting means of the present utility model, simultaneously as a kind of installation embodiment.

In Fig. 1 and Fig. 2,8 expression cabinets, the traditional D shape connector of 9 expressions, 10 expression radiated emission, 11 expression conducted interference, 12 expression radiation couplings, 13 expression feed-through filters.

Embodiment

Embodiment:

The structure of the utility model D type filter adapter is as shown in Figure 3: mainly by shell 1, capacitor 2, ground plate 3, pin hole 4, syringe needle 5, core 6 before the plastics, inserts 7 constitutes, wherein, capacitor 2 is positioned at shell 1, between shell 1 and capacitor 2, there is ground plate 3 to link to each other, the front end of capacitor 2 is a pin hole 4, the rear end is a syringe needle 5, front end in shell 1 inside, pin hole 4 outer gaps are core 6 before the plastics, be filled with inserts 7 in shell 1 inner other gap, capacitor 2 is porcelain Jie tubular capacitor, its capacitance is 5-10000pF, and the surface of pin hole 4 and syringe needle 5 is coated with one deck gold, and inserts 7 is an epoxide-resin glue.Shell 1 forms integrative-structure with capacitor 2 like this, thereby realizes electromagnetic sealing and environmental sealing.Each root lead-in wire that D type filter adapter is drawn has all passed through Filtering Processing, can not produce electromagnetic leakage, thereby satisfy Electro Magnetic Compatibility.The D type filter adapter of present embodiment when mounted, as shown in Figure 4, its pin hole 4 ends join with sealing D type pin type connector 14, its syringe needle 5 ends join with sealing D type cellular type connector 18, and fixing by screw 19; Sealing D type filter adapter 15 is connected with casing 16 and is fixing, between sealing D type filter adapter 15 and casing 16 conductive gasket 17 is arranged.Reduce resistance between adapter 15 and the casing 16 by conductive gasket 17, improve electric conductivity and sealing property, and make the interference signal of telecommunication arrive shell 1, arrive casing 16 again by sealing D type filter adapter 15, can not be radiated outside the system, thereby realize Electro Magnetic Compatibility and environmental suitability; Make the structure of entire connection portion more simple again, more efficient and convenient when dismounting and installation.

Claims

1, a kind of D type filter adapter, comprise shell (1) and capacitor (2), it is characterized in that: capacitor (2) is positioned at shell (1) inside, between shell (1) and capacitor (2), there is ground plate (3) to link to each other, the front end of two exits of capacitor (2) is pin hole (4), the rear end is syringe needle (5), and cores (6) before the inner front end of shell (1), gap pin hole (4) outside are plastics are filled with inserts (7) in other gap, shell (1) inside.

2, D type filter adapter according to claim 1 is characterized in that: capacitor (2) is porcelain Jie tubular capacitor or porcelain Jie disk capacitor.

3, D type filter adapter according to claim 2, it is characterized in that: the capacitance of described porcelain Jie tubular capacitor is 5-10000pF.

4, D type filter adapter according to claim 2, it is characterized in that: the capacitance of described porcelain Jie disk capacitor is 5-100000pF.

5, D type filter adapter according to claim 1 is characterized in that: the surface of pin hole (4) and syringe needle (5) is coated with layer of metal.