A DC-side parallel simplified filter

Abstract

The invention relates to the technical field of electronic equipment, and in particular to a DC-end parallel simplified filter, comprising a live wire row, a neutral wire row, a plurality of safety capacitors electrically connected to the live wire row and the neutral wire row, and an outer magnetic ring and an inner magnetic ring which are both simultaneously sleeved on the periphery of the live wire row and the neutral wire row. The filter also comprises a magnetic buffer component installed between the outer magnetic ring and the inner magnetic ring, and the magnetic buffer component comprises a first docking portion and a second docking portion, and the first docking portion is clamped with a first clamping component at one end in the length direction of the live wire row, and the second docking portion is clamped with a second clamping component at one end in the length direction of the live wire row, and the first clamping component and the second clamping component are distributed at both ends of the outer magnetic ring in the length direction of the live wire row. The invention reduces the volume occupied by EMC devices in the whole machine, improves the accuracy of detecting electromagnetic signals, and provides convenience for the maintenance and replacement of the inner magnetic ring and the outer magnetic ring.

Description

Technical Field

[0001] The invention relates to the technical field of electronic equipment, in particular to a DC-end parallel simplified filter. Background Art

[0002] EMC (Electro Magnetic Compatibility) refers to the ability of a device or system to operate in accordance with requirements in its electromagnetic environment and not produce intolerable electromagnetic interference to any device in its environment. For electronic products, basically all regions in the world have set up EMC market access certification, and the EMC requirements of various countries are gradually increasing. EMC devices occupy about half of the volume of the whole machine, occupying too much space, making some electronic products larger and unable to streamline the volume of electronic products. At the same time, the magnetic ring in the existing EMC device is easy to capture the interference of electromagnetic signals of other frequencies except the electromagnetic signals of the corresponding frequency, which makes the accuracy of the magnetic ring detecting electromagnetic signals low. Summary of the invention

[0003] The object of the present invention is to provide a DC-side parallel simplified filter to solve the problems raised in the above background technology.

[0004] The technical solution of the present invention is:

[0005] A DC-side parallel simplified filter comprises a live wire row, a neutral wire row, a plurality of safety capacitors electrically connected to the live wire row and the neutral wire row, and an outer magnetic ring and an inner magnetic ring both sleeved around the periphery of the live wire row and the neutral wire row, wherein the outer magnetic ring is sleeved on the outer side of the inner magnetic ring, so that the outer magnetic ring and the inner magnetic ring can respectively capture high-frequency electromagnetic signals and medium- and low-frequency electromagnetic signals escaping from the circuit at the same time;

[0006] The filter also includes a magnetic buffer assembly installed between the outer magnetic ring and the inner magnetic ring, the magnetic buffer assembly includes a first docking portion and a second docking portion that can be spliced ​​into a tubular structure, the center lines of the first docking portion and the second docking portion coincide and the two are matched in opposition, the first docking portion is clamped with a first clamping assembly at one end in the length direction of the live wire row, the second docking portion is clamped with a second clamping assembly at one end in the length direction of the live wire row, and the first clamping assembly and the second clamping assembly are distributed at both ends of the outer magnetic ring in the length direction of the live wire row.

[0007] Preferably, the first docking portion includes a first rectangular ring and a plurality of first docking strips passing between the outer magnetic ring and the inner magnetic ring, the length directions of all the first docking strips are perpendicular to the plane where the first rectangular ring is located, and all the first docking strips are distributed at intervals along the circumference of the first rectangular ring, and the second docking portion includes a second rectangular ring and a plurality of second docking strips passing between the outer magnetic ring and the inner magnetic ring, the length directions of all the second docking strips are perpendicular to the plane where the second rectangular ring is located, and all the second docking strips are distributed at intervals along the circumference of the second rectangular ring.

[0008] Preferably, the first rectangular ring is provided with a plurality of first guide holes for all the second docking strips to pass through, the second rectangular ring is provided with a plurality of second guide holes for all the first docking strips to pass through, all the first docking strips are inserted into the second rectangular ring and all the second docking strips are inserted into the first rectangular ring to form a square tube structure.

[0009] Preferably, several first docking strips fixedly mounted on two mutually parallel sides of the first rectangular ring are provided with first long through holes along their own length direction, and the first clamping assembly includes two first clamping strips that are perpendicular to all the first long through holes, the two first clamping strips are respectively arranged on both sides of the first long through holes, each first clamping strip has several first wedge blocks inserted into the first long through holes at intervals along its own length direction, a screw rod is respectively passed through both ends of the two first clamping strips, and the two sides of the first clamping strips are threadedly connected to the screw rod through nuts.

[0010] Preferably, several second docking strips fixedly mounted on two mutually parallel side edges of the second rectangular ring are provided with second long through holes along their own length direction, and the second clamping assembly includes two second clipping strips that are perpendicular to all the second long through holes, the two second clipping strips are respectively arranged on both sides of the second long through holes, each second clipping strip has several second wedge blocks inserted into the second long through holes at intervals along its own length direction, a screw rod is also passed through each of the two ends of the two second clipping strips, and both sides of the second clipping strips are also threadedly connected to the screw rod through nuts.

[0011] Preferably, the first elongated through hole is provided with an inclined surface fitted with the first wedge block at one end away from the first rectangular ring, and the second elongated through hole is provided with a wedge surface fitted with the second wedge block at one end away from the second rectangular ring.

[0012] The present invention provides a DC-side parallel simplified filter through improvement, which has the following improvements and advantages compared with the prior art:

[0013] First, the outer magnetic ring and the inner magnetic ring of the present invention are sleeved together to reduce the volume of the whole machine occupied by the EMC device, thereby reducing the volume of the electronic product and streamlining the volume of the electronic product to a certain extent;

[0014] Second, the magnetic forces of the outer magnetic ring and the inner magnetic ring connected together in the present invention control each other and capture the high-frequency electromagnetic signal and the medium-low frequency electromagnetic signal of the same section in the escape loop respectively, thereby reducing the interference amount of the medium-low frequency electromagnetic signal captured by the outer magnetic ring and reducing the interference amount of the high-frequency electromagnetic signal captured by the inner magnetic ring, thereby improving the accuracy of detecting the electromagnetic signal;

[0015] Thirdly, the magnetic buffer assembly of the present invention plays the role of magnetic isolation and magnetic bridging, and the magnetic buffer assembly is easy to load and unload, which can provide convenience for the maintenance and replacement of the inner magnetic ring and the outer magnetic ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further explained below in conjunction with the accompanying drawings and Examples:

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the prior art;

[0018] Figure 2 is a schematic diagram of the three-dimensional structure of the first embodiment of the present invention;

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure assembly of a magnetic buffer assembly, an outer magnetic ring and an inner magnetic ring in accordance with a first embodiment of the present invention;

[0020] Figure 4 It is a schematic diagram of the three-dimensional structural assembly of the first docking assembly and the first docking portion in the first embodiment of the present invention;

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure assembly of the second docking assembly and the second docking portion in the first embodiment of the present invention;

[0022] Figure 6 is a schematic diagram of the three-dimensional structure of the second docking portion of the first embodiment of the present invention;

[0023] Figure 7 is a schematic diagram of the three-dimensional structure of the second embodiment of the present invention;

[0024] Description of reference numerals:

[0025] Live wire row 1, neutral wire row 2, safety capacitor 3, outer magnetic ring 4, inner magnetic ring 5, magnetic buffer assembly 6, first docking part 61, second docking part 62, first docking strip 63, first rectangular ring 64, first guide hole 65, second docking strip 66, second rectangular ring 67, second guide hole 68, first clamping assembly 7, first clamping strip 71, first wedge block 72, first long through hole 73, second clamping assembly 8, second clamping strip 81, second wedge block 82, second long through hole 83, magnetic buffer layer 9, screw rod 10. DETAILED DESCRIPTION

[0026] The present invention is described in detail below, and the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Embodiment 1:

[0028] The present invention provides a DC-side parallel simplified filter through improvement, such as Figure 1-Figure 7 As shown, it includes a live wire row 1, a neutral wire row 2, a plurality of safety capacitors 3 electrically connected to the live wire row 1 and the neutral wire row 2, and an outer magnetic ring 4 and an inner magnetic ring 5 both sleeved around the periphery of the live wire row 1 and the neutral wire row 2. The outer magnetic ring 4 is sleeved on the outer side of the inner magnetic ring 5, so that the outer magnetic ring 4 and the inner magnetic ring 5 can respectively capture the high-frequency electromagnetic signal and the medium- and low-frequency electromagnetic signal that escape the circuit at the same time;

[0029] The outer magnetic ring 4 and the inner magnetic ring 5 of the present invention are sleeved together to reduce the volume of the whole machine occupied by the EMC device, thereby reducing the volume of the electronic product and streamlining the volume of the electronic product to a certain extent;

[0030] The magnetic forces of the outer magnetic ring 4 and the inner magnetic ring 5, which are sleeved together, control each other and capture the high-frequency electromagnetic signal and the medium- and low-frequency electromagnetic signal of the same section in the escape loop respectively, thereby reducing the interference amount of the medium- and low-frequency electromagnetic signals captured by the outer magnetic ring 4 and reducing the interference amount of the high-frequency electromagnetic signal captured by the inner magnetic ring 5, thereby improving the accuracy of detecting electromagnetic signals;

[0031] Existing technologies such as Figure 1As shown, the existing outer magnetic ring 4 and inner magnetic ring 5 are spaced apart around all live wire rows 1 and neutral wire rows 2. At the same time, the magnetic ring in the existing EMC device can easily capture the interference of electromagnetic signals of other frequencies except the electromagnetic signals of the corresponding frequency. One of the electrodes of all safety capacitors 3 is electrically connected to one of the live wire row 1 and the neutral wire row 2, and the other electrodes of all safety capacitors 3 are grounded. The simplified filter also includes a shell not shown in the figure, and a skeleton for supporting the live wire row 1, the neutral wire row 2, all safety capacitors 3, the outer magnetic ring 4 and the inner magnetic ring 5 is arranged in the shell, which is not shown in the figure.

[0032] like Figure 2 As shown, the filter also includes a magnetic buffer component 6 installed between the peripheral magnetic ring 4 and the inner magnetic ring 5, and the magnetic buffer component 6 includes a first docking portion 61 and a second docking portion 62 that can be spliced ​​into a tubular structure. The center lines of the first docking portion 61 and the second docking portion 62 coincide and the two are matched in opposition. The first docking portion 61 is clamped with a first clamping component 7 at one end in the length direction of the live wire row 1, and the second docking portion 62 is clamped with a second clamping component 8 at one end in the length direction of the live wire row 1. The first clamping component 7 and the second clamping component 8 are distributed at both ends of the peripheral magnetic ring 4 in the length direction of the live wire row 1, and the first docking portion 61 and the second docking portion 62 respectively pass through the gap between the peripheral magnetic ring 4 and the inner magnetic ring 5 from both ends of the peripheral magnetic ring 4, and the ends of the first docking portion 61 and the second docking portion 62 respectively pass through each other, and then the first clamping component 7 and the second clamping component 8 clamp the peripheral magnetic ring 4 and the inner magnetic ring 5 respectively.

[0033] The first docking portion 61 includes a first rectangular ring 64 and a plurality of first docking strips 63 passing through the outer magnetic ring 4 and the inner magnetic ring 5. The length directions of all the first docking strips 63 are perpendicular to the plane where the first rectangular ring 64 is located. All the first docking strips 63 are distributed at intervals along the circumference of the first rectangular ring 64. The second docking portion 62 includes a second rectangular ring 67 and a plurality of second docking strips 66 passing through the outer magnetic ring 4 and the inner magnetic ring 5. The length directions of all the second docking strips 66 are perpendicular to the plane where the second rectangular ring 67 is located. All the second docking strips 66 are distributed at intervals along the circumference of the second rectangular ring 67. The ends of the first docking portion 61 and the second docking portion 62 pass through each other respectively. All the first docking strips 63 and the second docking strips 66 can be spliced ​​into a rectangular tube to completely separate the outer side of the inner magnetic ring 5 and the inner side of the outer magnetic ring 4. All the first docking strips 63 and the second docking strips 66 are insulating strips.

[0034] The first rectangular ring 64 is provided with a plurality of first guide holes 65 for all the second docking strips 66 to pass through, and the second rectangular ring 67 is provided with a plurality of second guide holes 68 for all the first docking strips 63 to pass through. All the first docking strips 63 are inserted into the second rectangular ring 67 and all the second docking strips 66 are inserted into the first rectangular ring 64 to form a square tube structure. All the first docking strips 63 and the second docking strips 66 can be spliced ​​into a rectangular tube to completely separate the outer side of the inner magnetic ring 5 and the inner side of the outer magnetic ring 4. All the first docking strips 63 and the second docking strips 66 are insulating strips.

[0035] A plurality of first butt joint strips 63 fixedly mounted on two mutually parallel sides of the first rectangular ring 64 are provided with first long through holes 73 along their length direction, and the first clamping assembly 7 includes two first clamping strips 71 perpendicular to all the first long through holes 73, the two first clamping strips 71 are respectively arranged on both sides of the first long through holes 73, and each first clamping strip 71 is spaced apart along its length direction and has a plurality of first wedge blocks 7 inserted into the first long through holes 73 one by one. 2. A screw rod 10 is respectively passed through the two ends of the two first clamping strips 71. The two sides of the first clamping strips 71 are threadedly connected with the screw rod 10 through nuts. The nuts are turned to adjust the two first clamping strips 71 to move in the center line direction of the screw rod 10, so that the first wedge block 72 is in contact with the first long through hole 73, so that the first clamping strips 71 push the outer magnetic ring 4 and the inner magnetic ring 5 to move toward the second clamping strip 81, and the width of the first rectangular ring 64 is greater than the sum of the outer magnetic ring 4 and the inner magnetic ring 5.

[0036] A plurality of second butting strips 66 fixedly mounted on two mutually parallel sides of the second rectangular ring 67 are provided with second long through holes 83 along their length direction, and the second clamping assembly 8 includes two second clamping strips 81 perpendicular to all the second long through holes 83, the two second clamping strips 81 are respectively arranged on both sides of the second long through holes 83, and each second clamping strip 81 is provided with a plurality of second wedge blocks 82 inserted into the second long through holes 83 at intervals along its length direction. , a screw rod 10 is also passed through each of the two ends of the two second clamping strips 81, and the two sides of the second clamping strips 81 are also threadedly connected to the screw rod 10 through nuts. By turning the nuts, the two second clamping strips 81 are adjusted to move toward each other in the center line direction of the screw rod 10, so that the second wedge block 82 and the second long through hole 83 are in contact with each other, so that the second clamping strips 81 push the outer magnetic ring 4 and the inner magnetic ring 5 to move toward the first clamping strip 71, and the width of the second rectangular ring 67 is greater than the sum of the outer magnetic ring 4 and the inner magnetic ring 5.

[0037] The two first clamping strips 71 and the two second clamping strips 81 move toward each other to push the outer magnetic ring 4 and the inner magnetic ring 5 together.

[0038] The first long through hole 73 is provided with an inclined surface that fits with the first wedge block 72 at the end away from the first rectangular ring 64, and the second long through hole 83 is provided with a wedge surface that fits with the second wedge block 82 at the end away from the second rectangular ring 67. The nut is turned to adjust the two first clamping strips 71 to move toward each other in the center line direction of the screw rod 10, so that the first wedge block 72 and the inclined surface of the first long through hole 73 are in contact with each other, so that the first clamping strip 71 moves smoothly toward the second clamping strip 81. The nut is turned to adjust the two second clamping strips 81 to move toward each other in the center line direction of the screw rod 10, so that the second wedge block 82 and the wedge surface of the second long through hole 83 are in contact with each other, so that the second wedge block 82 and the inclined surface of the second long through hole 83 are in contact with each other, so that the second clamping strip 81 moves smoothly toward the first clamping strip 71.

[0039] Embodiment 2:

[0040] The present invention provides a DC-side parallel simplified filter through improvement, such as Figure 1-Figure 7 As shown, it includes a live wire row 1, a neutral wire row 2, a plurality of safety capacitors 3 electrically connected to the live wire row 1 and the neutral wire row 2, and an outer magnetic ring 4 and an inner magnetic ring 5 both sleeved around the periphery of the live wire row 1 and the neutral wire row 2. The outer magnetic ring 4 is sleeved on the outer side of the inner magnetic ring 5, so that the outer magnetic ring 4 and the inner magnetic ring 5 can respectively capture the high-frequency electromagnetic signal and the medium- and low-frequency electromagnetic signal that escape the circuit at the same time;

[0041] Existing technologies such as Figure 1 As shown, the existing outer magnetic ring 4 and inner magnetic ring 5 are spaced apart around all live wire rows 1 and neutral wire rows 2. At the same time, the magnetic ring in the existing EMC device can easily capture the interference of electromagnetic signals of other frequencies except the electromagnetic signals of the corresponding frequency. One of the electrodes of all safety capacitors 3 is electrically connected to one of the live wire row 1 and the neutral wire row 2, and the other electrodes of all safety capacitors 3 are grounded. The simplified filter also includes a shell not shown in the figure, and a skeleton for supporting the live wire row 1, the neutral wire row 2, all safety capacitors 3, the outer magnetic ring 4 and the inner magnetic ring 5 is arranged in the shell, which is not shown in the figure.

[0042] like Figure 2 As shown, the filter further includes a magnetic buffer component 6 installed between the outer magnetic ring 4 and the inner magnetic ring 5. The magnetic buffer component 6 is a magnetic buffer layer 9, and the magnetic buffer layer 9 is made of insulating material.

[0043] The outer magnetic ring 4 and the inner magnetic ring 5 of the present invention are sleeved together to reduce the volume of the whole machine occupied by the EMC device, thereby reducing the volume of the electronic product and streamlining the volume of the electronic product to a certain extent;

[0044] The magnetic forces of the outer magnetic ring 4 and the inner magnetic ring 5, which are sleeved together, are mutually controlled and simultaneously capture the high-frequency electromagnetic signal and the medium- and low-frequency electromagnetic signal of the same section in the escape loop through the magnetic buffer layer 9, thereby reducing the interference amount of the medium- and low-frequency electromagnetic signals captured by the outer magnetic ring 4 and reducing the interference amount of the high-frequency electromagnetic signals captured by the inner magnetic ring 5, thereby improving the accuracy of detecting electromagnetic signals;

[0045] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A DC-side parallel simplified filter, comprising a live wire row (1), a neutral wire row (2), a plurality of safety capacitors (3) electrically connected to the live wire row (1) and the neutral wire row (2), and an outer magnetic ring (4) and an inner magnetic ring (5) both of which are simultaneously sleeved on the outer periphery of the live wire row (1) and the neutral wire row (2), characterized in that: The outer magnetic ring (4) is sleeved on the outer side of the inner magnetic ring (5), so that the outer magnetic ring (4) and the inner magnetic ring (5) can respectively capture the high-frequency electromagnetic signal and the medium- and low-frequency electromagnetic signal of the escape loop at the same time; The filter further comprises a magnetic buffer component (6) installed between the outer magnetic ring (4) and the inner magnetic ring (5), the magnetic buffer component (6) comprising a first docking portion (61) and a second docking portion (62) which can be spliced ​​into a tubular structure, the center lines of the first docking portion (61) and the second docking portion (62) coincide with each other and the two are matched in opposite directions, the first docking portion (61) is clamped with a first clamping component (7) at one end in the length direction of the live wire row (1), the second docking portion (62) is clamped with a second clamping component (8) at one end in the length direction of the live wire row (1), the first clamping component (7) and the second clamping component (8) are distributed at both ends of the outer magnetic ring (4) in the length direction of the live wire row (1), the first docking portion (61) comprises a first rectangular ring (64) and a plurality of first docking strips (63) passing through between the outer magnetic ring (4) and the inner magnetic ring (5), the length directions of all the first docking strips (63) being perpendicular to the location of the first rectangular ring (64). The first butt joint strips (63) are arranged at intervals along the circumference of the first rectangular ring (64); the second butt joint portion (62) comprises a second rectangular ring (67) and a plurality of second butt joint strips (66) passing through the outer magnetic ring (4) and the inner magnetic ring (5); the length directions of all the second butt joint strips (66) are perpendicular to the plane where the second rectangular ring (67) is located; all the second butt joint strips (66) are arranged at intervals along the circumference of the second rectangular ring (67); the first rectangular ring (64) is provided with a plurality of first guide holes (65) for all the second butt joint strips (66) to pass through; the second rectangular ring (67) is provided with a plurality of second guide holes (68) for all the first butt joint strips (63) to pass through; all the first butt joint strips (63) are inserted into the second rectangular ring (67) and all the second butt joint strips (66) are inserted into the first rectangular ring (64) to form a square tube structure; and all the first butt joint strips (63) and the second butt joint strips (66) are insulating strips.

2. The DC-side parallel simplified filter according to claim 1, characterized in that: A plurality of first butt-jointed strips (63) fixedly mounted on two mutually parallel side edges of the first rectangular ring (64) are provided with first long through holes (73) along their length direction; the first clamping assembly (7) comprises two first clamping strips (71) which are perpendicular to all the first long through holes (73); the two first clamping strips (71) are respectively arranged on both sides of the first long through holes (73); each first clamping strip (71) is provided with a plurality of first wedge blocks (72) which are inserted into the first long through holes (73) one by one and are spaced apart along its length direction; a screw rod (10) is respectively passed through the two ends of the two first clamping strips (71); and the two sides of the first clamping strips (71) are threadedly connected to the screw rod (10) via nuts.

3. The DC-side parallel simplified filter according to claim 2, characterized in that: A plurality of second butt-jointed strips (66) fixedly mounted on two mutually parallel side edges of the second rectangular ring (67) are provided with second long through holes (83) along their length direction; the second clamping assembly (8) comprises two second clamping strips (81) which are perpendicular to all the second long through holes (83); the two second clamping strips (81) are respectively arranged on both sides of the second long through holes (83); each second clamping strip (81) is provided with a plurality of second wedge blocks (82) which are inserted into the second long through holes (83) one by one and are spaced apart along its length direction; a screw rod (10) is respectively passed through the two ends of the two second clamping strips (81); and the two sides of the second clamping strips (81) are also threadedly connected to the screw rod (10) through nuts.

4. The DC-side parallel simplified filter according to claim 3, characterized in that: The first elongated through hole (73) is provided with an inclined surface that fits with the first wedge block (72) at one end away from the first rectangular ring (64), and the second elongated through hole (83) is provided with a wedge surface that fits with the second wedge block (82) at one end away from the second rectangular ring (67).

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