CN210519168U - Case grounding device - Google Patents
Case grounding device Download PDFInfo
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- CN210519168U CN210519168U CN201921315717.XU CN201921315717U CN210519168U CN 210519168 U CN210519168 U CN 210519168U CN 201921315717 U CN201921315717 U CN 201921315717U CN 210519168 U CN210519168 U CN 210519168U
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Abstract
The utility model discloses a chassis grounding device, which comprises a power supply, a grounding screw, a DC board card and a PCB board which are arranged in a chassis, a grounding protection column arranged on a chassis shell, a grounding bus bar arranged on a cabinet and a grounding bar arranged in a machine room, wherein the chassis is arranged in the cabinet which is arranged in the machine room; the PCB is provided with a screw hole, a PCB working ground and a PCB protection ground, and a filter capacitor and magnetic beads are arranged between the PCB working ground and the PCB protection ground. Through the case grounding device disclosed by the above, the self safety protection level of the case grounding device can be improved, and the national requirements can be met.
Description
Technical Field
The utility model relates to the field of electronic technology, specifically a case earthing device.
Background
With the continuous development of electronic technology, high-frequency signals and high-speed signals are widely used, the grounding reliability design of the grounding device is improved to a higher requirement, and related products are required to be sold by related quality certifiers in China.
However, the case grounding device in the prior art cannot meet the national requirements due to the problem that the safety protection level of the case grounding device is too low.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the present invention provides a chassis grounding device, which redesigns the device in the chassis to solve the problem of too low self safety protection level.
In order to achieve the above object, the embodiment of the present invention provides the following technical solutions:
a cabinet grounding apparatus comprising: the power supply, the grounding screw, the DC board card and the PCB are arranged in the case, the grounding protection column is arranged on the case shell, the grounding bus bar is arranged on the cabinet, and the grounding bar is arranged in the machine room;
the case is arranged in the cabinet, and the cabinet is arranged in a machine room;
the PCB is provided with a screw hole, a PCB working ground and a PCB protection ground, a filter capacitor and a magnetic bead are arranged between the PCB working ground and the PCB protection ground, the screw hole is arranged on the PCB working ground, the PCB is connected with the case through the screw hole by using a screw, the PCB protection ground is provided with the grounding screw, the distance between the grounding screw and the power supply is within a preset distance, and the grounding screw is connected with a PE grounding end of the power supply through a first grounding wire;
the power supply is connected with the DC board card, the negative electrode of the DC board card is connected with the PCB working ground, and the positive electrode of the DC board card is connected with the PCB protection ground;
the grounding bus bar is connected with the grounding protection column through a second grounding wire, and the grounding bus bar is connected with the grounding bar through a third grounding wire.
Preferably, the size of the ground screw is determined by the rated current.
Preferably, the distance between the ground screw and the power supply is less than 30 cm.
Preferably, the diameter of the first grounding wire is not less than 2.5 mm.
Preferably, the grounding bar is made of copper.
Preferably, the diameter of the second grounding wire is not less than 2.5 mm.
Preferably, the diameter of the third ground line is not less than 4.0 mm.
Preferably, the size of the earth guard post is determined by the rated current.
Preferably, the grounding protection column is a grounding screw.
Based on the above, the embodiment of the present invention provides an apparatus chassis grounding device, which comprises a power supply, a grounding screw, a DC board and a PCB board arranged in an apparatus chassis, a grounding protection column arranged on a chassis housing, a grounding bus bar arranged in an apparatus cabinet and a grounding bar arranged in an apparatus room, wherein the apparatus chassis is arranged in the apparatus cabinet; the PCB is provided with a screw hole, a PCB working ground and a PCB protection ground, a filter capacitor and a magnetic bead are arranged between the PCB working ground and the PCB protection ground, the screw hole is arranged on the PCB working ground, the PCB is connected with the case through the screw hole by using a screw, the PCB protection ground is provided with the grounding screw, the distance between the grounding screw and the power supply is within a preset distance, and the grounding screw is connected with a PE grounding end of the power supply through a first grounding wire; the power supply is connected with the DC board card, the negative electrode of the DC board card is connected with the PCB working ground, and the positive electrode of the DC board card is connected with the PCB protection ground; the grounding bus bar is connected with the grounding protection column through a second grounding wire, and the grounding bus bar is connected with the grounding bar through a third grounding wire. Through the case grounding device disclosed by the invention, the self safety protection level of the case grounding device can be improved, and the national requirements can be met.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural view of a chassis grounding device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another chassis grounding device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another chassis grounding device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
An embodiment of the utility model provides a machine case earthing device, see fig. 1, machine case earthing device includes: the power supply 101, the grounding screw 102, the DC board 103 and the PCB 104 are disposed in the cabinet 100, the grounding protection column 105 is disposed on the casing of the cabinet 100, the grounding bus bar 201 is disposed on the cabinet 200, and the grounding bar 202 is disposed in the machine room.
The enclosure 100 is disposed in the cabinet 200, and the cabinet 200 is disposed in a machine room.
Be equipped with screw hole 106, PCB workplace 107 and PCB protection ground 108 on the PCB board 104, PCB workplace 107 with be provided with filter capacitor 109 and magnetic bead 110 between the PCB protection ground 108, screw hole 106 set up in on the PCB workplace 107, PCB board 104 passes through screw hole 106 use the screw with quick-witted case 100 links to each other, be provided with on the PCB protection ground 108 ground screw 102, ground screw 102 with distance between the power 101 is in presetting the distance, ground screw 102 through first earth connection with the PE earthing terminal of power 101 links to each other.
Preferably, the grounding screw 102 may also be connected to the power source 101 through a first grounding wire
It should be noted that the size of the ground screw 102 is determined by the rated current.
It should be noted that the rated current that the grounding screw bears is not only related to the magnitude but also related to the material, for example, the grounding screw with the same magnitude is made of copper and iron, and the grounding screw made of copper has better conductivity than the grounding screw made of iron, that is, the passing rated current is also larger.
In practical applications, when the grounding screw 102 is too large, the rated current passing through the grounding screw can be carried, but the material is wasted, and if the grounding screw 102 is too small, the rated current passing through the grounding screw is too large, which may cause overheating of the grounding screw 102 and eventually fire, so that the size of the grounding screw 102 needs to be determined by the rated current.
The filter capacitor 109 is an energy storage device that can efficiently smooth the dc output. In the electronic circuit that the interchange converts DC power supply into, filter capacitor not only makes the smooth stability of power direct current output, has reduced the influence of alternating pulsating current to electronic circuit, and the current fluctuation that still can absorb the production in the electronic circuit working process simultaneously and via the interference that alternating current power supply joined in marriage into for electronic circuit's working property is more stable, consequently the utility model discloses in, adopt filter capacitor can make PCB work place 107 and PCB protection ground 108 direct current output more level and smooth, and through setting up magnetic bead 110 improves filter capacitor 109's working effect.
The beads 110 remove RF noise that exists between the PCB operating ground 107 and the PCB protection ground, the RF being an alternating sine wave component superimposed on a direct current transmission level, the direct current component being the desired useful signal. It is therefore necessary to eliminate the unwanted signal energy and the use of the beads replaces the role of the high frequency resistor, i.e. the attenuator.
It should be noted that the magnetic beads 110 have very high resistivity and permeability, which is equivalent to a series connection of a resistor and an inductor, but the resistance and the inductance both vary with frequency. Therefore, the magnetic beads have better high-frequency filter characteristics than common inductors, and are resistive at high frequency, so that higher impedance can be kept in a quite wide frequency range, and the frequency modulation filter effect is improved.
Preferably, the distance between the ground screw 102 and the power supply 101 is less than 30 cm.
It should be noted that the distance between the grounding screw 102 and the power source 101 can be determined according to the size of the case 100, and in the present invention, the distance between the grounding screw 102 and the power source 101 is not limited to be less than 30 cm.
Preferably, the diameter of the first grounding wire is not less than 2.5 mm.
It should be noted that, the diameter size of first earth connection is according to the rated current decision through first earth connection, and generally speaking, the material of earth connection on the market is copper, iron and aluminium, and wherein the electric conductive property of copper is best, and in the earth connection of different materials equidimensions, the rated current that the earth connection that adopts copper bore is the biggest, consequently, the utility model discloses in, no matter which kind of material is adopted to first earth connection, the diameter that all needs the earth connection is not less than 2.5 millimeters. In practical applications, if the first ground line is made of an iron material with a thickness less than 2.5 mm, the ground line may generate heat due to an excessive rated current passing through the first ground line, thereby causing a fire.
Preferably, the first grounding wire is made of iron.
It should be noted that the material of the first grounding wire is a metal conductive material, and may be iron or copper, in the present invention, the material of the first grounding wire does not only limit iron.
The power source 101 is connected with the DC board card 103, the negative electrode of the DC board card 103 is connected with the PCB working ground 107, and the positive electrode of the DC board card 103 is connected with the PCB protection ground 108.
It should be noted that the DC board 103 can convert the ac power supplied by the power supply 101 into DC power.
The ground bus bar 201 is connected to the ground protection post 105 through a second ground line, and the ground bus bar 201 is connected to the ground bar 202 through a third ground line.
Note that the size of the ground protection column 105 is determined by a rated current.
It should be noted that the size of the grounding protection pillar 105 may be the same as the size of the grounding screw 102, or may be different from the size of the grounding screw 102, and in the present invention, it is not limited whether the size of the grounding protection pillar 105 is the same as the size of the grounding screw 102.
Preferably, the grounding protection column is a grounding screw.
Note that the ground screw is the same as the ground screw 102.
Preferably, the ground bar 202 is made of copper.
It should be noted that the grounding bar 202 is made of a conductive material, such as copper, iron, or an alloy, and the material of the grounding bar 202 is not limited to copper.
Preferably, the diameter of the second grounding wire is not less than 2.5 mm.
It should be noted that the material of the second ground wire may be the same as the material of the first ground wire, or may be different from the material of the first ground wire.
It should be noted that the diameter size of the second grounding wire may be the same as the diameter size of the first grounding wire, or may be different from the diameter size of the first grounding wire.
It should also be noted that, the diameter size of second earth connection is according to the rated current decision through the second earth connection, and generally speaking, the material of earth connection on the market is copper, iron and aluminium, and wherein the electric conductive property of copper is best, and in the earth connection of different materials equidimensions, the rated current that the earth connection that adopts copper bore is the biggest, consequently, the utility model discloses in, no matter which kind of material is adopted to the second earth connection, all need the diameter of earth connection not less than 2.5 millimeters. In practical applications, if the second ground line is made of an iron material with a thickness less than 2.5 mm, the ground line may generate heat and cause fire due to an excessive rated current passing through the second ground line.
Preferably, the diameter of the third ground line is not less than 4.0 mm.
It should be noted that the material of the third ground wire may be the same as the material of the first ground wire, or may be different from the material of the first ground wire.
It should also be noted that, the diameter size of third earth connection is according to the rated current decision through the third earth connection, and generally speaking, the material of earth connection on the market is copper, iron and aluminium, and wherein the electric conductive property of copper is best, and in the earth connection of different materials equidimensions, the rated current that the earth connection that adopts copper bore is the biggest, consequently, the utility model discloses in, no matter which kind of material is adopted to the third earth connection, all need the diameter of earth connection not less than 4.0 millimeters. In practical applications, if the third ground line is made of iron material with a thickness less than 4.0 mm, the third ground line may generate heat and cause fire due to an excessive rated current passing through the third ground line.
The utility model discloses a power, ground screw, DC integrated circuit board and PCB board that set up in quick-witted case, the ground protection post that sets up on quick-witted case shell, the ground bar that sets up in the rack and the ground bar that sets up in the computer lab, the machine case sets up in the rack, the rack sets up in the computer lab; the PCB is provided with a screw hole, a PCB working ground and a PCB protection ground, a filter capacitor and a magnetic bead are arranged between the PCB working ground and the PCB protection ground, the screw hole is arranged on the PCB working ground, the PCB is connected with the case through the screw hole by using a screw, the PCB protection ground is provided with the grounding screw, the distance between the grounding screw and the power supply is within a preset distance, and the grounding screw is connected with a PE grounding end of the power supply through a first grounding wire; the power supply is connected with the DC board card, the negative electrode of the DC board card is connected with the PCB working ground, and the positive electrode of the DC board card is connected with the PCB protection ground; the grounding bus bar is connected with the grounding protection column through a second grounding wire, and the grounding bus bar is connected with the grounding bar through a third grounding wire. Through the case grounding device disclosed by the invention, the self safety protection level of the case grounding device can be improved, and the national requirements can be met.
With reference to fig. 1 and fig. 2, for the present invention provides another grounding device for a chassis, the grounding device for a chassis includes: the power supply 101, the grounding screw 102, the DC board 103 and the PCB 104 are disposed in the cabinet 100, the grounding protection column 105 is disposed on the casing of the cabinet 100, the grounding bus bar 201 is disposed on the cabinet 200, and the grounding bar 202 is disposed in the machine room.
The enclosure 100 is disposed in the cabinet 200, and the cabinet 200 is disposed in a machine room.
Be equipped with screw hole 106, PCB workplace 107 and PCB protection ground 108 on the PCB board 104, PCB workplace 107 with be provided with filter capacitor 109 and magnetic bead 110 between the PCB protection ground 108, screw hole 106 set up in on the PCB workplace 107, PCB board 104 passes through screw hole 106 use the screw with quick-witted case 100 links to each other, be provided with on the PCB protection ground 108 ground screw 102, ground screw 102 with distance between the power 101 is in presetting the distance, ground screw 102 through first earth connection with the PE earthing terminal of power 101 links to each other.
Specifically, the distance between the grounding screw 102 and the power supply 101 is less than 15 cm.
Specifically, the diameter of the first grounding wire is larger than 3.0 mm.
The power source 101 is connected with the DC board card 103, the negative electrode of the DC board card 103 is connected with the PCB working ground 107, and the positive electrode of the DC board card 103 is connected with the PCB protection ground 108.
The ground bus bar 201 is connected to the ground protection post 105 through a second ground line, and the ground bus bar 201 is connected to the ground bar 202 through a third ground line.
Specifically, the diameter of the second grounding wire is larger than 3.0 mm.
Specifically, the diameter of the third grounding wire is larger than 4.5 millimeters.
The utility model discloses a power, ground screw, DC integrated circuit board and PCB board that set up in quick-witted case, the ground protection post that sets up on quick-witted case shell, the ground bar that sets up in the rack and the ground bar that sets up in the computer lab, the machine case sets up in the rack, the rack sets up in the computer lab; the PCB is provided with a screw hole, a PCB working ground and a PCB protection ground, a filter capacitor and a magnetic bead are arranged between the PCB working ground and the PCB protection ground, the screw hole is arranged on the PCB working ground, the PCB is connected with the case through the screw hole by using a screw, the PCB protection ground is provided with the grounding screw, the distance between the grounding screw and the power supply is within a preset distance, and the grounding screw is connected with a PE grounding end of the power supply through a first grounding wire; the power supply is connected with the DC board card, the negative electrode of the DC board card is connected with the PCB working ground, and the positive electrode of the DC board card is connected with the PCB protection ground; the grounding bus bar is connected with the grounding protection column through a second grounding wire, and the grounding bus bar is connected with the grounding bar through a third grounding wire. Through the case grounding device disclosed by the invention, the self safety protection level of the case grounding device can be improved, and the national requirements can be met.
With reference to fig. 1 and fig. 3, for the present invention provides a chassis grounding device, the chassis grounding device includes: the power supply 101, the grounding screw 102, the DC board 103 and the PCB 104 are disposed in the cabinet 100, the grounding protection column 105 is disposed on the casing of the cabinet 100, the grounding bus bar 201 is disposed on the cabinet 200, and the grounding bar 202 is disposed in the machine room.
The enclosure 100 is disposed in the cabinet 200, and the cabinet 200 is disposed in a machine room.
Be equipped with screw hole 106, PCB workplace 107 and PCB protection ground 108 on the PCB board 104, PCB workplace 107 with be provided with filter capacitor 109 and magnetic bead 110 between the PCB protection ground 108, screw hole 106 set up in on the PCB workplace 107, PCB board 104 passes through screw hole 106 use the screw with quick-witted case 100 links to each other, be provided with on the PCB protection ground 108 ground screw 102, ground screw 102 with distance between the power 101 is in presetting the distance, ground screw 102 through first earth connection with the PE earthing terminal of power 101 links to each other.
Specifically, the distance between the ground screw 102 and the power supply 101 is 20 cm.
Specifically, the diameter of the first grounding wire is 3.0 mm.
The power source 101 is connected with the DC board card 103, the negative electrode of the DC board card 103 is connected with the PCB working ground 107, and the positive electrode of the DC board card 103 is connected with the PCB protection ground 108.
The ground bus bar 201 is connected to the ground protection post 105 through a second ground line, and the ground bus bar 201 is connected to the ground bar 202 through a third ground line.
Specifically, the diameter of the second grounding wire is 3.2 mm.
Specifically, the diameter of the third grounding wire is 4.8 mm.
The utility model discloses a power, ground screw, DC integrated circuit board and PCB board that set up in quick-witted case, the ground protection post that sets up on quick-witted case shell, the ground bar that sets up in the rack and the ground bar that sets up in the computer lab, the machine case sets up in the rack, the rack sets up in the computer lab; the PCB is provided with a screw hole, a PCB working ground and a PCB protection ground, a filter capacitor and a magnetic bead are arranged between the PCB working ground and the PCB protection ground, the screw hole is arranged on the PCB working ground, the PCB is connected with the case through the screw hole by using a screw, the PCB protection ground is provided with the grounding screw, the distance between the grounding screw and the power supply is within a preset distance, and the grounding screw is connected with a PE grounding end of the power supply through a first grounding wire; the power supply is connected with the DC board card, the negative electrode of the DC board card is connected with the PCB working ground, and the positive electrode of the DC board card is connected with the PCB protection ground; the grounding bus bar is connected with the grounding protection column through a second grounding wire, and the grounding bus bar is connected with the grounding bar through a third grounding wire. Through the case grounding device disclosed by the invention, the self safety protection level of the case grounding device can be improved, and the national requirements can be met.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An apparatus box grounding device, comprising: the power supply, the grounding screw, the DC board card and the PCB are arranged in the case, the grounding protection column is arranged on the case shell, the grounding bus bar is arranged on the cabinet, and the grounding bar is arranged in the machine room;
the case is arranged in the cabinet, and the cabinet is arranged in a machine room;
the PCB is provided with a screw hole, a PCB working ground and a PCB protection ground, a filter capacitor and a magnetic bead are arranged between the PCB working ground and the PCB protection ground, the screw hole is arranged on the PCB working ground, the PCB is connected with the case through the screw hole by using a screw, the PCB protection ground is provided with the grounding screw, the distance between the grounding screw and the power supply is within a preset distance, and the grounding screw is connected with a PE grounding end of the power supply through a first grounding wire;
the power supply is connected with the DC board card, the negative electrode of the DC board card is connected with the PCB working ground, and the positive electrode of the DC board card is connected with the PCB protection ground;
the grounding bus bar is connected with the grounding protection column through a second grounding wire, and the grounding bus bar is connected with the grounding bar through a third grounding wire.
2. The apparatus of claim 1, wherein the ground screw is sized by a rated current.
3. The device of claim 1, wherein a distance between the ground screw and the power source is less than 30 cm.
4. The apparatus of claim 1, wherein the first ground line has a diameter of not less than 2.5 millimeters.
5. The apparatus of claim 1, wherein the ground bar is copper.
6. The apparatus of claim 1, wherein the diameter of the second ground line is not less than 2.5 millimeters.
7. The apparatus of claim 1, wherein the diameter of the third ground line is not less than 4.0 millimeters.
8. The apparatus of claim 1, wherein the size of the ground protection posts is determined by a current rating.
9. The apparatus of claim 1, wherein the ground protection post is a ground screw.
10. The apparatus of claim 1, wherein the first ground wire is made of iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921315717.XU CN210519168U (en) | 2019-08-14 | 2019-08-14 | Case grounding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921315717.XU CN210519168U (en) | 2019-08-14 | 2019-08-14 | Case grounding device |
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| Publication Number | Publication Date |
|---|---|
| CN210519168U true CN210519168U (en) | 2020-05-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921315717.XU Active CN210519168U (en) | 2019-08-14 | 2019-08-14 | Case grounding device |
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| CN (1) | CN210519168U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113939074A (en) * | 2021-09-24 | 2022-01-14 | 合肥联宝信息技术有限公司 | Anti-interference circuit board and electronic equipment |
-
2019
- 2019-08-14 CN CN201921315717.XU patent/CN210519168U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113939074A (en) * | 2021-09-24 | 2022-01-14 | 合肥联宝信息技术有限公司 | Anti-interference circuit board and electronic equipment |
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