CN201360388Y

CN201360388Y - Box body panel of filter

Info

Publication number: CN201360388Y
Application number: CNU2009200784494U
Authority: CN
Inventors: 刘建
Original assignee: Xinxinshenfeng Electronics Science And Technology Co Ltd Chengdu
Current assignee: Xinxinshenfeng Electronics Science And Technology Co Ltd Chengdu
Priority date: 2009-01-05
Filing date: 2009-01-05
Publication date: 2009-12-09
Anticipated expiration: 2019-01-05

Abstract

The utility model discloses a box body panel of a filter. A connector is installed on the panel; a filter is also installed on the panel; and the filter is adjacent to the connector. Both the connector and the filter are installed on the panel and are close together, thereby not only solving the problem of electromagnetic compatibility, but also integrating various functions such as power filtering, signal filtering and the like; and the utility model also has the advantages of small volume, light weight, more convenient and faster installation.

Description

The filtering cabinet panel

Technical field

The utility model relates to electronic applications, especially a kind of electromagnetic compatibility filtering cabinet panel.

Background technology

The electric connector of (as shown in Figure 1) is the same with general electric connector on the common cabinet panel, all can only shield the high band electromagnetic interference by metal shell, be the Electro Magnetic Compatibility standard that satisfies less than entire product and depend shielding alone concerning the line conduct radiation of 2M-100MHZ.When solving the Electro Magnetic Compatibility of casing, usually adopt the method for filtering to realize.

A kind of method is power line filtering (as shown in Figure 2), and the EMI power-supply filter is installed in this method cabinet, makes the radiation/conducted interference on the power line can be outside power interface connector is not radiated equipment, thereby makes power line satisfy the standard of Electro Magnetic Compatibility.As shown in Figure 2, because the situation that allows performance of filter reduce can appear in the particularity of general filter when erection unit., input/output line coupling long such as incoming line all can cause the emc testing failure.

Another kind method is a signal line filter, and this method adds feed-through filter on cabinet, the feed-through filter filtering interference signals, interference signal just can not be radiated outside the equipment by connector panel, thereby makes holding wire satisfy the standard of Electro Magnetic Compatibility.Add a feed-through filter for each lead-in wire of connector among Fig. 3, the capacity requirement of filter is more than 0.01 μ F, a connector needs a plurality of feed-through filters, and not only connector perhaps in system, so just the more feedthrough filtering of needs forms array, will take bigger space, and bigger space is not easy to guarantee the electric continuity of electromagnetic shielding needs, signal blockage causes the electromagnetic compatibility failure easily.And connector can cause and use inconvenience when dismounting and installation in bigger system or a plurality of connector.

The utility model content

The purpose of this utility model provides a kind of volume panel little, in light weight, easy for installation, on this panel connector is installed, and wherein, simultaneously filter is housed on panel, and filter and connector are adjacent.Owing to all be contained on the panel and, not only solved emc issue apart from very near connector and filter, and integrated functions such as power filter, signal filtering.Volume is little, in light weight, easier for installation, more quick.

The filter effect of any leaded capacitor all can be subjected to the restriction of lead-in inductance.When UHF or higher frequency range will obtain better filter effect; when particularly the guard shield body is not penetrated; must use core-through capacitor; the utility model uses metal ground plate and shell and panel to constitute capacitor grounding; because earth-current is dispersed in around the center conductor in 360 ° the scope; therefore in fact do not have inductance, electric capacity can keep good performance in surpassing the frequency range of GHz.

Description of drawings

The utility model will illustrate by example and with reference to the mode of accompanying drawing, wherein:

Fig. 1 is common casing schematic diagram;

Fig. 2 is 1 power line filtering casing schematic diagram:

Fig. 3 is a signal line filter casing schematic diagram;

Fig. 4 is a panel schematic diagram of the present utility model

Embodiment

Disclosed all features in this specification, or the step in disclosed all methods or the process except mutually exclusive feature and/or step, all can make up by any way.

Disclosed arbitrary feature in this specification (comprising any accessory claim, summary and accompanying drawing) is unless special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, unless special narration, each feature is an example in a series of equivalences or the similar characteristics.

An embodiment of the present utility model panel as shown in Figure 4, on this panel connector is installed, wherein, every holding wire all has a high-performance to suppress disturbance means, this device can effectively suppress the High-frequency Interference brought on the holding wire, the high-performance wide band filter is housed on panel simultaneously, and this filter can effectively suppress the interference that Switching Power Supply produces, and also can effectively stop external interference to cause the equipment cisco unity malfunction by the power supply conduction.Filter and connector are adjacent, can reduce greatly because the problem that the performance of filter that installation question brings reduces.Owing to all be contained on the panel and, not only solved emc issue apart from very near connector and filter, and integrated functions such as power filter, signal filtering.Volume is little, in light weight, easier for installation, more quick.

The filter effect of any leaded capacitor all can be subjected to the restriction of lead-in inductance.When UHF or higher frequency range will obtain better filter effect; when particularly the guard shield body is not penetrated; must use core-through capacitor; the utility model uses metal ground plate and cabinet shell and panel to constitute capacitor grounding; because earth-current is dispersed in around the center conductor in 360 ° the scope; therefore in fact do not have inductance, electric capacity can keep good performance in surpassing the frequency range of GHz.

The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.

Claims

1, a kind of filtering cabinet panel is characterized in that: on this panel connector is installed, and on panel filter is housed, filter and connector are adjacent.

2, filtering cabinet panel as claimed in claim 1 is characterized in that: this panel uses metal ground plate and cabinet shell and panel to constitute capacitor grounding.