CN203872504U - Filter installing structure - Google Patents
Filter installing structure Download PDFInfo
- Publication number
- CN203872504U CN203872504U CN201420225193.6U CN201420225193U CN203872504U CN 203872504 U CN203872504 U CN 203872504U CN 201420225193 U CN201420225193 U CN 201420225193U CN 203872504 U CN203872504 U CN 203872504U
- Authority
- CN
- China
- Prior art keywords
- filter
- metallic shield
- sidewall
- load
- shielding case
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The utility model discloses a filter installing structure comprising a filter, a metallic shielding case, and a load inside the metallic shielding case. One end of the filter is connected with an input wire electrically connected with a power device. The other end of the filter is connected with an output wire electrically connected with the load. A groove is disposed downwardly on a sidewall of the metallic shielding case. A pressing plate is arranged inside the groove. The top of the pressing plate is connected with the bottom of the groove through a spring. The bottom of the pressing plate presses the top of the filter. A wire inlet is arranged on the sidewall of the metallic shielding case. The output wire of the filter passes through the wire inlet to be electrically connected with the load. A metallic supporting frame is connected with the sidewall of the metallic shielding case. The filter is arranged on the metallic supporting frame. The filter installing structure replaces a welding or screw fixing installation manner in the prior art. Not only is the filter easy to detach and replace, but also good electric connection between the filter and the metallic shielding case is guaranteed. A ground wire is connected with the bottom of a horizontal supporting plate so as to eliminate influence from ground resistance to the filter to the utmost extent.
Description
Technical field
The utility model relates to a kind of filter mounting structure.
Background technology
Power-supply filter is the low-pass filtering for electronic equipment power source port, conventionally has the function of two kinds of decay differential mode harassing and wrecking.Differential mode attenuation performance is determined by the transmission characteristic of filter, as long as selection is proper, conventionally than being easier to, reaches; And common mode attenuation performance is relevant with the mode of access device by the mounting means of filter.Power-supply filter extensive use in substation relay protection control appliance, but exist configuration selection and Rig up error to affect its usefulness, and cause short problem in power supply module sensitive for damages useful life.As should be 10 years the service life of a set of electronic installation, parts wherein will be higher than the service life of whole rent device.Yet fragile because of power supply module, being limited service life is only 4 years, this not talkative and power-supply filter inefficiency have some relations.The large disturbing wave of energy, when the effective inhibition that can not get filter, directly intrudes into power module, can cause the damage of power supply module; The less disturbing wave of energy effectively falls time slack what can not get filter, though to be unlikely to be that power module damages, can invade other plug-in units by output port of power source and form and disturb, and affect device and normally works, and even device damages.As can be seen here, guarantee that the correctness of power-supply filter on mounting means is necessary, in prior art, for guaranteeing to be electrically connected to reliably between filter and metallic shield, it is that mode by screw or welding is fixed on casing of filter on metal screen overlay that filter is installed, but this mounting structure causes filter to change very inconvenience of dismounting, and the firm performance of installing is lower.
Utility model content
The purpose of this utility model is to overcome deficiency of the prior art, and a kind of filter mounting structure is provided, and has solved prior art median filter and has been installed and caused changing the inconvenient technical problem of dismounting by welding or screw fixation method.
The purpose of this utility model is achieved in that a kind of filter mounting structure, comprise filter, metallic shield and be located at the load in metallic shield, one end of filter is connected with the input line being electrically connected to power supply apparatus, the other end is connected with the output line being electrically connected to load, on the sidewall of described metallic shield, offer groove downwards, in described groove, be provided with a pressing plate, described pressing plate top is connected with the bottom land of groove by spring one, and bottom is pressed in the top of filter; On the sidewall of described metallic shield, offer entrance hole, the output line of described filter is electrically connected to load through entrance hole; On the sidewall of described metallic shield, be also connected with metal supporting frames, described filter is located in metal supporting frames.
Described metal supporting frames comprises horizontal supporting plate and vertical side plate, and described horizontal supporting plate and vertically side plate are wholely set; Vertically on side plate, by spring two, be connected with push pedal, described push pedal is pushed against filter on the sidewall of metallic shield.
On described horizontal supporting plate, offer the gathering sill for push pedal guiding.
Described metal supporting frames is installed on the bottom of metallic shield.
Described metal supporting frames and metallic shield are wholely set.
The bottom of described horizontal supporting plate is connected with earth connection.
Compared with prior art, the beneficial effect that the utility model reaches: be provided with the pressing plate and the push pedal that are connected with spring, replace in prior art welding or by the hard-wired mode of screw, not only facilitate the dismounting and change of filter and can guarantee good being electrically connected between filter and metallic shield; Earth connection is connected in to the bottom of horizontal supporting plate, reduces to greatest extent the impact on filter of earth resistance; The output line of filter is electrically connected to load through entrance hole, and the output line of filter and input line are effectively isolated, and avoids interpolar coupled interference.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Wherein, 1, filter; 2, metallic shield; 3, load; 4, groove; 5, pressing plate; 6, spring one; 7, entrance hole; 8a, horizontal supporting plate; 8b, vertical side plate; 9, earth connection; 10, spring two; 11, push pedal.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.Following examples are only for the technical solution of the utility model is more clearly described, and can not limit protection range of the present utility model with this.
As shown in Figure 1, filter 1 mounting structure, comprise filter 1, metallic shield 2 and be located at the load 3 in metallic shield 2, one end of filter 1 is connected with the input line being electrically connected to power supply apparatus, the other end is connected with the output line being electrically connected to load 3, offers groove 4 on the sidewall of metallic shield 2 downwards, is provided with a pressing plate 5 in groove 4, pressing plate 5 tops are connected with the bottom land of groove 4 by spring 1, and bottom is pressed in the top of filter 1; On the sidewall of metallic shield 2, offer entrance hole 7, the output line of filter 1 is electrically connected to load 3 through entrance hole 7; On the sidewall of metallic shield 2, be also connected with metal supporting frames, filter 1 is located in metal supporting frames.Metal supporting frames is installed on the bottom of metallic shield 2 and is wholely set with metallic shield 2.Metal supporting frames comprises horizontal supporting plate 8a and vertical side plate 8b, horizontal supporting plate 8a and vertically side plate 8b are wholely set, the bottom of horizontal supporting plate 8a is connected with earth connection 9, and vertically side plate 8b is upper is connected with push pedal 11 by spring 2 10, and push pedal 11 is pushed against filter 1 on the sidewall of metallic shield 2.On horizontal supporting plate 8a, offer the gathering sill for push pedal 11 guiding.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model know-why; can also make some improvement and distortion, these improvement and distortion also should be considered as protection range of the present utility model.
Claims (6)
1. a filter mounting structure, comprise filter, metallic shield and be located at the load in metallic shield, one end of filter is connected with the input line being electrically connected to power supply apparatus, the other end is connected with the output line being electrically connected to load, it is characterized in that, on the sidewall of described metallic shield, offer groove downwards, in described groove, be provided with a pressing plate, described pressing plate top is connected with the bottom land of groove by spring one, and bottom is pressed in the top of filter; On the sidewall of described metallic shield, offer entrance hole, the output line of described filter is electrically connected to load through entrance hole; On the sidewall of described metallic shield, be also connected with metal supporting frames, described filter is located in metal supporting frames.
2. filter mounting structure according to claim 1, is characterized in that, described metal supporting frames comprises horizontal supporting plate and vertical side plate, and described horizontal supporting plate and vertically side plate are wholely set; Vertically on side plate, by spring two, be connected with push pedal, described push pedal is pushed against filter on the sidewall of metallic shield.
3. filter mounting structure according to claim 2, is characterized in that, offers the gathering sill for push pedal guiding on described horizontal supporting plate.
4. filter mounting structure according to claim 3, is characterized in that, described metal supporting frames is installed on the bottom of metallic shield.
5. filter mounting structure according to claim 4, is characterized in that, described metal supporting frames and metallic shield are wholely set.
6. filter mounting structure according to claim 5, is characterized in that, the bottom of described horizontal supporting plate is connected with earth connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420225193.6U CN203872504U (en) | 2014-05-05 | 2014-05-05 | Filter installing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420225193.6U CN203872504U (en) | 2014-05-05 | 2014-05-05 | Filter installing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203872504U true CN203872504U (en) | 2014-10-08 |
Family
ID=51653417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420225193.6U Expired - Fee Related CN203872504U (en) | 2014-05-05 | 2014-05-05 | Filter installing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203872504U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103987240A (en) * | 2014-05-05 | 2014-08-13 | 昆山达功电子有限公司 | Filter installation structure |
-
2014
- 2014-05-05 CN CN201420225193.6U patent/CN203872504U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103987240A (en) * | 2014-05-05 | 2014-08-13 | 昆山达功电子有限公司 | Filter installation structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141008 Termination date: 20150505 |
|
| EXPY | Termination of patent right or utility model |