CN214045459U - Anti-interference frequency converter shell - Google Patents
Anti-interference frequency converter shell Download PDFInfo
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- CN214045459U CN214045459U CN202022637579.6U CN202022637579U CN214045459U CN 214045459 U CN214045459 U CN 214045459U CN 202022637579 U CN202022637579 U CN 202022637579U CN 214045459 U CN214045459 U CN 214045459U
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- shell
- circuit board
- frequency converter
- interference
- wiring
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Abstract
An anti-interference frequency converter shell comprises a shell, an operation board, a circuit board and a shielding board. The shell comprises a body, a threading hole, a mounting groove, a clamping groove and a shielding layer. The shielding layer is electroplated on the inner surface of the body, and the shielding layer is an anti-electromagnetic interference metal coating, so that the shell has anti-interference performance. The circuit board comprises a circuit board substrate, a bayonet and a wiring groove. The two wiring grooves are respectively arranged at two ends of the substrate, so that wires at the output end and the input end of the frequency converter are separately wired, and the anti-interference performance is good. The shielding plate is disposed on the substrate and on the opposite side of the wiring groove. The shielding plate has interference resistance, and after the circuit board is clamped in the shell, the circuit board is positioned between the shielding layer of the shell and the shielding plate, so that interference signals in all directions are shielded, and the circuit board is prevented from being interfered.
Description
Technical Field
The utility model relates to a converter technical field, in particular to anti-interference converter shell.
Background
The frequency converter is an electric control device which applies a frequency conversion technology and a microelectronic technology and controls an alternating current motor by changing the frequency mode of a working power supply of the motor.
The frequency converter mainly comprises a rectifying unit, a filtering unit, an inverting unit, a braking unit, a driving unit, a detecting unit micro-processing unit and the like. The input alternating current is converted into direct current voltage after passing through the rectifying circuit, the direct current voltage is converted into pulse voltage with different widths through the inverter, and the motor is driven through the pulse voltage, so that the alternating current motor is controlled by changing the working power supply frequency of the motor. However, when the rectifier circuit works, harmonic current can be generated, and the harmonic current can cause the voltage waveform to be distorted, and the distorted voltage can interfere with many circuits and interfere with the frequency converter, thereby affecting the normal operation of the frequency converter and even causing the damage of the frequency converter. And the output of converter, input most all set up together and a through wires hole of a plurality of wire sharing, cause the wiring confusion easily, and output, input do not separately lay wire easy mutual interference, influence the converter and normally work.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides an anti-interference converter shell to solve above-mentioned technical problem.
An anti-jamming frequency converter housing comprises a housing, a circuit board arranged in the housing, and a shielding plate arranged on the circuit board. The shell comprises a body, two threading holes oppositely arranged at two ends of the body and a shielding layer arranged on the inner surface of the body. The shielding layer is electroplated on the inner surface of the body. The shielding layer is an anti-electromagnetic interference metal coating. The circuit board comprises a substrate arranged in the shell and two wiring grooves which are respectively arranged at two ends of the substrate and are positioned between the substrate and the shell. The arrangement direction of the two wiring grooves is parallel to the arrangement direction of the two threading holes, the shielding plate is arranged on the substrate and is positioned on the opposite side of the wiring grooves, and the shielding plate has anti-interference performance.
Furthermore, the anti-interference frequency converter shell also comprises an operation plate arranged on the outer surface of the body.
Furthermore, the shell also comprises a mounting groove arranged on the body, and a plurality of clamping grooves vertically arranged on the inner side wall of the body.
Further, the circuit board further comprises a plurality of bayonets which are arranged on the side edge of the substrate and clamped with the clamping grooves.
Furthermore, the wiring groove is provided with a plurality of wiring openings, and the opening direction of the wiring openings faces the threading holes.
Further, the shielding layer is nickel conductive paint, silver conductive paint, copper conductive paint or carbon conductive paint.
Further, the shielding plate is a wire mesh.
Compared with the prior art, the utility model provides an anti-interference converter shell is through setting up the shielding layer with the configuration of shield plate and change wire, specifically, the shell includes a body, and two relative settings are in respectively the through wires hole at body both ends, a setting is in mounting groove on the body, a plurality of perpendicular settings are in draw-in groove on the body inside wall to and the one deck setting is in the shielding layer of body internal surface. The circuit board is through setting up bayonet socket on the side of base plate with the draw-in groove joint, the base plate both ends are equipped with respectively the wiring groove, the array orientation in wiring groove with the array orientation of through wires hole is parallel, and the wire of converter output and input is worn to establish two respectively insert behind the through wires hole and establish two on the wiring groove to the wire of the output of realization converter and input separately lays wire, and the interference killing feature is good. The shielding plate is disposed on the substrate and on the opposite side of the wiring groove. The shielding layer is an anti-electromagnetic interference metal coating, so that the shell has anti-interference performance. The shielding plate has interference resistance, and after the circuit board is clamped in the shell, the circuit board is positioned between the shielding layer of the shell and the shielding plate, so that interference signals in all directions are shielded, and the circuit board is prevented from being interfered.
Drawings
Fig. 1 is the utility model provides a pair of the decomposition structure schematic diagram of anti-interference converter shell.
Fig. 2 is a schematic structural diagram of the anti-jamming frequency converter housing of fig. 1.
Fig. 3 is a schematic structural diagram of a housing included in the anti-jamming frequency converter housing of fig. 1.
Detailed Description
Specific examples of the present invention will be described in further detail below. It should be understood that the description herein of embodiments of the invention is not intended to limit the scope of the invention.
As shown in fig. 1 to fig. 3, it is a schematic structural diagram of the anti-interference frequency converter housing provided by the present invention. The anti-interference frequency converter housing comprises a housing 10, an operating panel 20 arranged on the housing 10, a circuit board 30 arranged in the housing 10, and a shielding plate 40 arranged on the circuit board 30. It is contemplated that the anti-jamming converter housing may also include other functional modules, such as assembly components, mounting components, electrical connection components, etc., which are well known to those skilled in the art and will not be described herein.
The shell 10 comprises a body 11, two threading holes 12 which are respectively and oppositely arranged at two ends of the body 11, a mounting groove 13 arranged on the body 11, a plurality of clamping grooves 14 arranged on the inner side wall of the body 11 and a shielding layer 15 arranged on the inner surface of the body 11. The body 11 is used for arranging the above functional components, that is, the threading hole 12, the mounting groove 13, the card slot 14, the shielding layer 15, the circuit board 30, and the shielding plate 40. The body 11 is a square body, and the shape of the body can be set according to actual needs. And the two threading holes are respectively used for penetrating through wires at the output end and the input end of the frequency converter. The mounting groove 13 is disposed on an outer surface of the body 11, and is used for mounting and disposing the operation panel 20. The plurality of card slots 14 are vertically arranged on the inner side wall of the body 11, and the card slots 14 are used for being connected with the circuit board 30. The shielding layer 15 is electroplated on the inner surface of the body 11, the shielding layer 15 is an anti-electromagnetic interference metal coating, and specifically, the shielding layer 15 is a nickel conductive paint, a silver conductive paint, a copper conductive paint or a carbon conductive paint, so that the housing 10 has anti-interference performance.
The operation panel 20 is disposed on the mounting groove 13 of the housing 10 and connected to the circuit board 30, and controls the operation of the frequency converter through the operation keys on the operation panel 20, but the operation panel itself is the prior art and is not described herein again.
The circuit board 30 includes a base plate 31 disposed in the housing 10, a plurality of bayonets 32 disposed on the side of the base plate 31, and two wire connection grooves 33 disposed at both ends of the base plate 31. The substrate 31 is disposed in the body 11, and the substrate 31 is used for supporting and connecting electronic components disposed on the substrate 31, so as to implement circulation of an electric circuit. It is a plurality of bayonet socket 32 sets up respectively on many sides of base plate 31, bayonet socket 32 with the mutual joint of draw-in groove 14 makes base plate 31 pass through bayonet socket 32 with the mutual joint of draw-in groove 14 is fixed in the shell 10, realize circuit board 30 with the connection of shell 10 is fixed. This connection facilitates the mounting and dismounting of the circuit board 30, while preventing potential safety hazards caused by the circuit board 30 falling down during wiring. The two wiring grooves 33 are respectively provided at both ends of the substrate 31 between the substrate 31 and the housing 10. Two wiring groove 33's array orientation and two the array orientation of through wires hole 12 is parallel, wiring groove 33 has a plurality of wiring mouths, the direction orientation of seting up of wiring mouth through wires hole 12, the wire of converter output and input is worn to establish two respectively insert behind the through wires hole 12 and establish two on wiring groove 33 to the wire of the output of realization converter and input separately lays wire, and the interference killing feature is good.
The shielding plate 40 is disposed on the substrate 31 and on the opposite side of the wiring groove 33, and the shielding plate 40 is electrically connected to the circuit board 30. The shielding plate 40 has interference immunity, and specifically, the shielding plate 40 is a wire mesh, and a large amount of free electrons are contained in the wire mesh, so that when the free electrons encounter the electromagnetic wave, a part of electromagnetic energy is converted into kinetic energy of the free electrons, thereby weakening the electromagnetic wave. After the circuit board 30 is clamped in the housing 10, the circuit board 30 is located between the shielding layer 15 of the housing 10 and the shielding plate 40, so as to shield interference signals in all directions and prevent the circuit board 30 from being interfered.
Compared with the prior art, the utility model provides an anti-interference converter shell is through setting up shielding layer 15 with the configuration of shield plate 40 and change wire, specifically, shell 10 includes a body 11, and two relative settings respectively are in the through wires hole 12 at 11 both ends of body, one sets up mounting groove 13 on the body 11, a plurality of perpendicular settings are in draw-in groove 14 on the 11 inside walls of body to and the one deck setting is in the shielding layer 15 of 11 internal surfaces of body. Circuit board 30 is through setting up bayonet socket 32 on the side of base plate 31 with draw-in groove 13 joint, 31 both ends of base plate are equipped with respectively wiring groove 33, wiring groove 33 arrange the direction with the arrangement direction of through wires hole 12 is parallel, and two are worn to establish respectively by the wire of converter output and input insert respectively behind the through wires hole 12 and establish two on the wiring groove 33 to realize that the wire of the output of converter and input separately lays wire, the interference killing feature is good. The shield plate 40 is disposed on the substrate 31 on the opposite side of the wiring groove 33. The shielding layer 15 is an anti-electromagnetic interference metal coating, so that the housing 10 has anti-interference performance. The shielding plate 40 has interference resistance, and after the circuit board 30 is clamped in the housing 10, the circuit board 30 is located between the shielding layer 15 of the housing 10 and the shielding plate 40, so that interference signals in all directions are shielded, and the circuit board 30 is prevented from being interfered.
The above description is only for the preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention, and any modification, equivalent replacement or improvement within the spirit of the present invention is encompassed by the claims of the present invention.
Claims (7)
1. An anti-interference converter shell which characterized in that: the anti-interference frequency converter shell comprises a shell, a circuit board and a shielding plate, wherein the circuit board is arranged in the shell, the shielding plate is arranged on the circuit board, the shell comprises a body, two opposite ends of the body are arranged in threading holes at two ends of the body, one layer of the shielding layer is arranged on the inner surface of the body, the shielding layer is electroplated on the inner surface of the body, the shielding layer is an anti-electromagnetic interference metal coating, the circuit board comprises a base plate and two wiring grooves, the base plate is arranged in the shell, the two wiring grooves are respectively arranged at two ends of the base plate and located between the base plate and the shell, the arrangement direction of the wiring grooves is parallel to the arrangement direction of the threading holes, the shielding plate is arranged on the base plate and located on the opposite sides of the wiring grooves, and the shielding plate has anti-interference performance.
2. The anti-jamming frequency converter housing of claim 1, wherein: the anti-interference frequency converter shell further comprises an operation panel arranged on the outer surface of the body.
3. The anti-jamming frequency converter housing of claim 1, wherein: the shell further comprises a mounting groove formed in the body, and a plurality of clamping grooves vertically formed in the inner side wall of the body.
4. A tamper-resistant frequency converter housing according to claim 3, wherein: the circuit board further comprises a plurality of bayonets which are arranged on the side edge of the substrate and are clamped with the clamping grooves.
5. The anti-jamming frequency converter housing of claim 1, wherein: the wiring groove is provided with a plurality of wiring openings, and the opening direction of the wiring openings faces the threading holes.
6. The anti-jamming frequency converter housing of claim 1, wherein: the shielding layer is nickel conductive paint, silver conductive paint, copper conductive paint or carbon conductive paint.
7. The anti-jamming frequency converter housing of claim 1, wherein: the shielding plate is a wire mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022637579.6U CN214045459U (en) | 2020-11-16 | 2020-11-16 | Anti-interference frequency converter shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022637579.6U CN214045459U (en) | 2020-11-16 | 2020-11-16 | Anti-interference frequency converter shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214045459U true CN214045459U (en) | 2021-08-24 |
Family
ID=77359208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022637579.6U Active CN214045459U (en) | 2020-11-16 | 2020-11-16 | Anti-interference frequency converter shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214045459U (en) |
-
2020
- 2020-11-16 CN CN202022637579.6U patent/CN214045459U/en active Active
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