Single-phase filter structure

Abstract

The utility model discloses a single-phase filter structure, comprising a housing which comprises end walls at two ends and a circle of side wall between the two end walls; the conductive mechanism penetrates through the two end walls and is fixed relative to the shell; the magnetic core is arranged in the shell, and the magnetic core is provided with a through hole, so that the magnetic core is arranged on the conductive mechanism in a sleeving manner; the capacitor is fixedly arranged in the shell; wherein the conductive mechanism comprises a first copper rod and a second copper rod; the first copper rod comprises a middle part and two end parts connected to the two ends of the middle part respectively, the middle part is arranged in the through hole of the magnetic core in a penetrating manner, and each end part passes through the corresponding end wall in a penetrating manner; the second copper rod is arranged on one side of the middle part in a mechanical connection mode and penetrates through the through hole of the magnetic core. Through the structure of the utility model, the conductive mechanism can be arranged to be the first copper rod and the second copper rod which are mechanically connected, so that the sectional area of the conductive mechanism is increased, the positions of the magnetic core and the capacitor are not occupied, and the cost is lower.

Description

Technical Field

[0001] The utility model relates to a filter structure, in particular to a single-phase filter structure. Background Art

[0002] The description in this section merely provides background information related to the disclosure of the present utility model and does not constitute prior art.

[0003] A filter is a component or device in an electronic circuit that allows signals in a specific frequency range to pass through while blocking signals in other frequency ranges. Filters can be divided into low-pass, high-pass, band-pass and band-stop filters. The above filters are widely used in various electronic devices, such as signal processing in communication systems and sound equalization in audio systems. Among them, the feedthrough filter is a special type of filter, which is usually used for EMI (electromagnetic interference) filtering of power lines or signal lines. The characteristic of the feedthrough filter is that it is directly installed on the line that needs to be filtered, allowing direct current or signals to pass through while blocking high-frequency noise. The design of the feedthrough filter usually contains capacitors and inductor components, which can provide a low impedance path at high frequencies, so that high-frequency noise is effectively attenuated. It has the characteristics of excellent performance and compactness.

[0004] In the scenario of in-vehicle mobile medical testing, customers have increasingly stringent requirements on the overall space of medical equipment. For this reason, medical equipment manufacturers are becoming more and more demanding on the size of front-end input and output filters. For example, in some scenarios, customers require the size of single-phase filters to be compressed by more than half. However, although the medical equipment has been changed from a hospital to a mobile in-vehicle mode, the performance still needs to remain unchanged, which means that the filter still needs to pass a large current, and a large current means that the cross-sectional area of ​​the copper rod in the filter cannot be reduced.

[0005] However, if a square or circular copper rod of regular size is placed in the filter, due to the limitation of the filter size, the copper rod of regular size will occupy the space of the magnetic core or capacitor, which conflicts with the existing vehicle-mounted miniaturization scenario and makes it impossible to achieve normal use in the miniaturization scenario.

[0006] Or, in some scenarios, special design of the copper rod is required, but the mold cost is high and the installation is complicated.

[0007] Currently, there is no single-phase filter structure that can solve the above problems. Utility Model Content

[0008] The utility model aims to provide a single-phase filter structure, which can be configured as a first copper rod and a second copper rod mechanically connected through a conductive mechanism, so that the cross-sectional area of ​​the conductive mechanism is increased and does not occupy the position of a magnetic core and a capacitor, and the cost is low.

[0009] In order to achieve the above object, the utility model discloses the following single-phase filter structure; the single-phase filter structure comprises:

[0010] A shell, wherein each end of the shell comprises an end wall, and the shell further comprises a circle of side walls between the two end walls;

[0011] A conductive mechanism, the conductive mechanism passing through the two end walls and fixed relative to the housing;

[0012] A magnetic core, the magnetic core is arranged inside the shell, and the magnetic core has a through hole so that the magnetic core is sleeved on the conductive mechanism;

[0013] A capacitor, wherein the capacitor is fixedly disposed in the housing;

[0014] Wherein, the conductive mechanism includes a first copper rod and a second copper rod; the first copper rod includes a middle part and two ends respectively connected to the two ends of the middle part, the middle part is inserted into the through hole of the magnetic core, and each of the ends is inserted through a corresponding end wall; the second copper rod is mechanically connected and arranged on one side of the middle part, and is inserted into the through hole of the magnetic core.

[0015] Furthermore, the number of the conductive mechanisms is two, and the two conductive mechanisms are arranged in parallel.

[0016] Furthermore, each of the middle portions and the end portions are connected via a bending portion, and each of the bending portions has a bend along a direction from the input end to the output end, so that the end portions of the two conductive mechanisms that are adjacent to each other are away from each other.

[0017] Furthermore, each of the bent portions has a bend perpendicular to the direction from the input end to the output end, so that each of the end portions has an offset perpendicular to the direction from the input end to the output end.

[0018] Furthermore, there are multiple capacitors, and the multiple capacitors are fixedly arranged on the side wall.

[0019] Furthermore, the directions in which the plurality of capacitors avoid the magnetic core are fixed, and the plurality of capacitors are electrically connected to the conductive mechanisms at corresponding positions respectively.

[0020] Furthermore, each of the end portions is in a sheet shape, and a top surface and a bottom surface of each of the end sheets are respectively connected to a capacitor.

[0021] Furthermore, the first copper rod is provided with a first mounting hole, the second copper rod is provided with a second mounting hole matching the first mounting hole, and fasteners are passed through the first mounting hole and the second mounting hole to fix the first copper rod and the second copper rod to each other.

[0022] By means of the above technical solution, the beneficial effects of the utility model are as follows:

[0023] The single-phase filter structure of the utility model can be configured as a first copper rod and a second copper rod that are mechanically connected through a conductive mechanism, and the first copper rod is composed of a middle portion and an end portion, and the middle portion of the first copper rod and the second copper rod are fixed to each other, so that the cross-sectional area of ​​the conductive mechanism is enlarged, but at the same time, a sufficient amount of magnetic cores and capacitors and the like are placed in the shell through a flexible layout of the end portions, thereby realizing a miniaturized single-phase filter structure at a relatively low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1 It is an internal schematic diagram of a single-phase filter structure provided in an embodiment of this specification;

[0026] Figure 2 It is a schematic diagram of a conductive mechanism of a single-phase filter structure provided in an embodiment of this specification;

[0027] In the figure: 1, shell; 11, end wall; 12, side wall; 2, conductive mechanism; 21, first copper rod; 211, middle part; 212, end part; 213, bending part; 22, second copper rod; 3, magnetic core; 4, capacitor. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the drawings in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this specification.

[0029] In the description of the present utility model, it should be noted that the terms "upper", "middle", "lower", "inner", "outer", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. The terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. The following describes the implementation method of the present utility model based on its overall structure.

[0030] See also Figure 1-2 , is a single-phase filter structure of this embodiment; wherein the single-phase filter structure includes:

[0031] A housing 1, wherein both ends of the housing 1 each include an end wall 11, and the housing 1 further includes a circle of side walls 12 between the two end walls 11;

[0032] The conductive mechanism 2 is passed through the two end walls 11 and is fixed relative to the housing 1;

[0033] A magnetic core 3, which is disposed inside the housing 1 and has a through hole so that the magnetic core 3 is sleeved on the conductive mechanism 2;

[0034] Capacitor 4, capacitor 4 is fixedly arranged in the housing 1;

[0035] Among them, the conductive mechanism 2 includes a first copper rod 21 and a second copper rod 22; the first copper rod 21 includes a middle portion 211 and two end portions 212 respectively connected to both ends of the middle portion 211, the middle portion 211 is inserted into the through hole of the magnetic core 3, and each end portion 212 is inserted through a corresponding end wall 11; the second copper rod 22 is mechanically connected and arranged on one side of the middle portion 211, and is inserted into the through hole of the magnetic core 3.

[0036] Through the above structure, when installing, a conductive mechanism 2 of corresponding size is prepared, wherein the first copper rod 21 and the second copper rod 22 of the conductive mechanism 2 are separated, and the operator only needs to weld the second copper rod 22 or mechanically connect it to the corresponding area on the first copper rod 21 through a fastener, so that the first copper rod 21 and the second copper rod 22 are in a stacked and completely fixed state, and then, the assembled conductive mechanism 2 is inserted along the through hole of the magnetic core 3, and the magnetic core 3 with the conductive mechanism 2 is placed in the corresponding position of the housing 1. Specifically, the position and direction of the magnetic core 3 should be ensured to be correct before placement to meet the magnetic flux and filtering effect. Among them, the first copper rod 21 of the conductive mechanism 2 has two ends 212, one end 212 faces the input end, and the other end 212 faces the output end, and the above-mentioned end 212 is fixed by passing through the two end walls 1 of the housing 1. Then, the capacitor 4 can be placed in the housing 1, and the capacitor 4 is fixed by the wall surface of the housing 1. Finally, after the capacitor 4 and the conductive mechanism 2 at the corresponding positions are welded or mechanically connected, the inside of the housing 1 can be filled with glue to achieve final fixation. The material for the glue filling can be epoxy resin, silicone or polyurethane, etc., so that the various components inside the housing 1 can have sufficient mechanical strength and insulation performance. After the glue filling is completed and completely cured, the housing 1 is locked to make it completely closed, and then the final test and shipment can be carried out.

[0037] By means of the above structure, specifically when the conductive mechanism 2 is inserted into the interior of the magnetic core 3, since the first copper rod 21 of the conductive mechanism 2 is arranged as a multi-link organization consisting of a middle part 211 and an end part 212, wherein the middle part 211 is mainly used to be arranged inside the magnetic core, and a second copper rod 22 of the same material is fixed on the middle part 211, therefore, even in the case where the through-hole space of the magnetic core 3 is small, due to the technical solution of superimposing the first copper rod 21 and the second copper rod 22, the cross-sectional area of ​​the conductive mechanism 2 inside the through-hole of the magnetic core 3 is maintained at a relatively high level, while the space outside the through-hole of the magnetic core 3 is relatively large, and the end part 212 of the first copper rod 21 can be horizontally extended to expand the area, and the higher cross-sectional area is also satisfied, which means that the conductive mechanism 2 in this embodiment can be suitable for the applicable scenario of mobile medical equipment through a larger cross-sectional area, while ensuring the current, it has the characteristics of a miniaturized single-phase filter structure.

[0038] Specifically, that is to say, although the middle portion 211 of the first copper rod 21 in the through hole of the magnetic core 3 is narrow and has a small cross-sectional area, after being combined and connected with the second copper rod 22, the size of the cross-sectional area is significantly increased, and the first copper rod 21 outside the magnetic core 3 is not restricted by the magnetic core 3 and can have a wider size, so that the cross-sectional area is guaranteed.

[0039] Furthermore, there are two conductive mechanisms 2, and the two conductive mechanisms 2 are arranged in parallel. Each intermediate portion 211 and the end portion 212 are connected by a bending portion 213, and each bending portion 213 has a bend along the direction from the input end to the output end, so that the end portions 212 of the two conductive mechanisms 2 that are adjacent to each other are away from each other. According to the actual space inside the shell 1, since the first copper rod 21 of the conductive mechanism 2 is limited in the through hole of the magnetic core 3, but there is a wider space outside the through hole of the outer magnetic core 3, the connection between the bending portion 213 and the end portion 212 can be guided to the designated area by bending the bending portion 213 according to actual product needs, and fixed after passing through the side wall 12.

[0040] Similarly, in another embodiment, each bending portion 213 has a bend perpendicular to the direction from the input end to the output end, so that each end portion 213 has an offset perpendicular to the direction from the input end to the output end. By bending the bending portion 213 along the vertical direction, the end portion 212 at the end of the bending portion 213 can achieve spatial adjustment along the vertical direction and meet the need for the end portion 212 to dock with external equipment.

[0041] Furthermore, there are multiple capacitors 4, and the multiple capacitors 4 are fixedly arranged on the side wall 12. At the same time, the directions of the multiple capacitors 4 avoiding the magnetic core 3 are fixed, and the multiple capacitors 4 are electrically connected to the conductive mechanisms 2 at corresponding positions. Through the above structure, in this embodiment, the capacitor 4 is set to a regular rectangular structure, and the housing 1 is also set to a regular rectangular structure, so that the capacitor 4 is placed in the four relative corners of the housing 1 cavity, and the capacitor 4 will not excessively affect the extension of the conductive mechanism 2, so that the overall structure is more compact, which is more conducive to realizing the miniaturized design of the single-phase filter structure of the utility model.

[0042] Specifically, in this embodiment, each end 212 is in the shape of a sheet, and the top and bottom surfaces of each end 212 are respectively connected to a capacitor 4. Specifically, in this embodiment, the first copper rod 21 and the second copper rod 22 are both configured to be processed by bending and cutting a metal copper sheet, which has a lower cost, and the sheet-shaped first copper rod 21 structure can provide enough space on both sides of the end 212 and the bent portion 213 for accommodating the capacitor 4, that is, the line distance from the capacitor 4 to the conductive mechanism 2 is short, and the structure is compact.

[0043] Furthermore, if Figure 2As shown, the first copper rod 21 is provided with a first mounting hole, the second copper rod 22 is provided with a second mounting hole matching the first mounting hole, and fasteners are inserted in the first mounting hole and the second mounting hole (not shown in the figure, but standard specification bolts inserted in the hole position in the figure can be used), so that the first copper rod 21 and the second copper rod 22 are fixed to each other. Through the form of mechanical connection, the first copper rod 21 and the second copper rod 22 can be processed separately, and then operators with simple training can achieve faster assembly at a lower cost. In addition, the mechanical connection is easy to disassemble. When an assembly error occurs or maintenance and replacement are required, only the fasteners need to be disassembled, which is more convenient and improves maintenance efficiency.

[0044] Although different specific embodiments are mentioned in the content of this application, this application is not limited to the situations described in the industry standards or embodiments, etc. Some industry standards or slightly modified implementation plans based on the implementation of the custom methods or embodiments can also achieve the same, equivalent or similar, or predictable implementation effects after deformation of the above embodiments. The embodiments of data acquisition, processing, output, judgment methods, etc. after these modifications or deformations can still fall within the scope of the optional implementation plans of this application.

[0045] Although the present application has been described through embodiments, those skilled in the art will appreciate that there are many modifications and changes to the present application without departing from the spirit of the present application. It is intended that the attached embodiments include these modifications and changes without departing from the present application.

Claims

1. A single-phase filter structure; characterized in that, The single-phase filter structure comprises: A shell, wherein each end of the shell comprises an end wall, and the shell further comprises a circle of side walls between the two end walls; A conductive mechanism, the conductive mechanism passing through the two end walls and fixed relative to the housing; A magnetic core, the magnetic core is arranged inside the shell, and the magnetic core has a through hole so that the magnetic core is sleeved on the conductive mechanism; A capacitor, wherein the capacitor is fixedly disposed in the housing; Wherein, the conductive mechanism includes a first copper rod and a second copper rod; the first copper rod includes a middle part and two ends respectively connected to the two ends of the middle part, the middle part is inserted into the through hole of the magnetic core, and each of the ends is inserted through a corresponding end wall; the second copper rod is mechanically connected and arranged on one side of the middle part, and is inserted into the through hole of the magnetic core.

2. The single-phase filter structure according to claim 1, characterized in that: The number of the conductive mechanisms is two, and the two conductive mechanisms are arranged in parallel.

3. The single-phase filter structure according to claim 2, characterized in that: Each of the middle portions and the end portions is connected via a bending portion, and each of the bending portions is bent along a direction from the input end to the output end, so that the end portions of the two conductive mechanisms that are adjacent to each other are away from each other.

4. The single-phase filter structure according to claim 3, characterized in that: Each of the bent portions has a bend perpendicular to the direction from the input end to the output end, so that each of the end portions has an offset perpendicular to the direction from the input end to the output end.

5. The single-phase filter structure according to claim 1, characterized in that: There are multiple capacitors, and the multiple capacitors are fixedly arranged on the side wall.

6. The single-phase filter structure according to claim 5, characterized in that: The directions in which the plurality of capacitors avoid the magnetic core are fixed, and the plurality of capacitors are electrically connected to the conductive mechanisms at corresponding positions respectively.

7. The single-phase filter structure according to claim 6, characterized in that: Each of the end portions is in a sheet shape, and the top surface and the bottom surface of each of the end sheets are respectively connected to one of the capacitors.

8. The single-phase filter structure according to claim 1, characterized in that: The first copper rod is provided with a first mounting hole, the second copper rod is provided with a second mounting hole matching the first mounting hole, and fasteners are passed through the first mounting hole and the second mounting hole to fix the first copper rod and the second copper rod to each other.

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