CN220775792U - Filter with protection function - Google Patents

Abstract

The utility model discloses a filter with protection function, belonging to the field of filters, comprising: the device comprises a first injection molding shell, a second injection molding shell, a metal shell, a copper bar assembly, a magnetic ring and an end cover. The second injection molded housing is mounted on a copper bar assembly having a conductive post extending out of the second injection molded housing. The metal shell is sleeved outside the second injection molding shell, a containing cavity is arranged between the metal shell and the second injection molding shell, a magnetic ring is placed in the containing cavity of the metal shell, polyurethane glue is filled in the containing cavity of the metal shell, and then the metal shell is sealed by the end cover. The joint of the copper bar assembly and the second injection molding shell is sealed by using insulating glue, and the copper bar assembly is smeared with one circle, so that the anti-interference capability of the vehicle-mounted filter is improved, and the service life of the vehicle-mounted filter is prolonged.

Description

Filter with protection function

Technical Field

The present disclosure relates to a filter, and particularly to a filter with protection function.

Background

The filter is a filter circuit consisting of an inductor and a resistor. The filter can effectively filter the frequency points of the specific frequency or the frequencies outside the frequency points in the power line to obtain a power signal of the specific frequency or eliminate the power signal of the specific frequency. The filter produced by the structure of the good filter can resist interference, has a protection effect, and prolongs the service life of the product.

The injection molding shell of traditional vehicle-mounted filter adopts the integration mode of moulding plastics more, and the finished product of moulding plastics is mostly pure plastic part, at injection molding in-process, can appear the lacked phenomenon of expecting, and pure plastic construction's shell does not have good protective effect and anti-interference effect to magnetism moreover, and the vehicle produces vibrations in driving the in-process easily, consequently lacked and expected department takes place the damage easily.

Disclosure of Invention

The utility model aims to produce a filter, and solves the problems of poor protection effect, weak anti-interference capability and influence on product quality and service life. The utility model provides a filter with a protection function, which comprises:

a copper bar assembly;

the second shell of moulding plastics, the second shell of moulding plastics is established outside the copper bar subassembly, and the copper bar subassembly has and extends the second is moulded plastics the outer conductive column of shell for protection and fixed copper bar subassembly have avoided the product to cause protective effect not good because of reasons such as vibrations when using.

The metal shell is sleeved outside the second injection molding shell, a containing cavity is formed between the metal shell and the second injection molding shell, the magnetic ring is arranged in the containing cavity formed between the metal shell and the second injection molding shell, and the insulating filling body is arranged between the metal shell and the magnetic ring. The metal shell not only can improve the anti-interference capability of the filter, but also can improve the heat dissipation capability near the magnetic ring, reduce the influence of the heating of the copper bar assembly on the filter devices, and improve the reliability of the filter devices.

Preferably, the copper bar group comprises a first copper bar, a second copper bar and a third copper bar; the first copper bar, the second copper bar and the third copper bar are arranged in parallel and opposite to each other, and the head part of each copper bar is provided with a conductive column; the conductive column on the first copper bar is provided with a part embedded into the second injection molding shell, the tail end of the conductive column of the first copper bar is provided with an insulating piece, the insulating piece is provided with a part embedded into the second injection molding shell, and the insulating piece is opposite to the second copper bar. The insulating piece is arranged, so that the first copper bar is easy to empty when placed in an injection mold, and deformation of the first copper bar in the injection molding process is avoided.

Preferably, the second injection molding shell is further provided with a first injection molding shell, and an injection molding step is arranged at the joint of the second injection molding shell and the first injection molding shell and is positioned between two adjacent copper bars in the first copper bar, the second copper bar and the third copper bar. The problem that the creepage distance of the copper bar assembly is insufficient due to the fact that gaps appear at the joint of the traditional two injection molding processes is avoided, so that the pressure resistance of the product is more excellent, the quality performance of the product and the safety protection of the whole vehicle are enhanced, and the service life of the product is prolonged.

Preferably, the metal shell is made of aluminum materials, so that the metal shell has better protection and anti-interference effects.

Preferably, the insulating filler is made of polyurethane rubber material, and the insulating filler coats the copper bar assembly and the magnetic ring, so that the copper bar assembly and the magnetic ring are fixed.

Preferably, the first injection molding shell is provided with a plurality of positioning holes for positioning connection of the first injection molding shell with other components.

Preferably, the joint of the copper bar assembly and the second injection molding shell is sealed by using insulating glue, and is smeared with one circle.

Preferably, a gap between the metal shell and the second injection-molded shell is closed by the end cover, so that filtering and anti-interference capacity is improved.

The beneficial effects of the utility model are as follows:

1. through the insulating part of design on first copper bar for first copper bar appears the vacancy easily when placing in injection mold, avoids first copper bar to appear the phenomenon of deformation at the injection molding process.

2. The mode of embedding metal casing protection magnetic core on the second shell of moulding plastics avoids the thin wall that traditional integration mode formed to mould plastics to appear the phenomenon of lack of glue, leads to the product protection not enough, and metal casing's antimagnetic interference ability and mechanical protection are stronger simultaneously for the filter effect of magnetic core is stronger, has prolonged the life of product.

3. Through the butt joint step of moulding plastics of the design of the shell root of moulding plastics at the second and the matching of first shell of moulding plastics, avoided traditional twice to mould plastics the junction and appear the clearance and lead to the problem that the creepage distance of copper bar is insufficient for the withstand voltage performance of product is more superior, has strengthened the quality performance of product and the safety protection of whole car, has prolonged the life of product.

4. The polyurethane glue is filled in the metal housing accommodating cavity to wrap the nanocrystalline magnetic ring, so that the nanocrystalline magnetic ring is prevented from being damaged due to vibration of a product in the running process of a vehicle, and meanwhile, the polyurethane glue has good heat dissipation effect and is matched with the excellent heat dissipation performance of the metal housing, so that the product can quickly dissipate the heat emitted by continuous operation in the use process, the plastic softening of the product caused by heating at high temperature is avoided, and the protection function of the product on the magnetic ring is enhanced.

According to the filter with the protection function, the creepage distance is increased by adopting a shell arranging mode and designing injection molding steps, so that the problems that the clearance creepage distance is insufficient between injection molding lack and secondary injection molding easily occurs easily due to the fact that the traditional pure injection molding is integrated, the protection effect is poor due to the fact that vibration is easily generated in the vehicle driving process are solved, and meanwhile, the shell has strong anti-interference capability on the magnetic ring. In order to solve the technical problems in the background technology, the utility model provides a filter with a protection function.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model.

Fig. 2 is a schematic diagram of a connection structure between a magnetic ring 6 and a copper bar assembly 4 according to the present utility model.

Fig. 3 is a schematic structural view of the copper bar assembly 4 and the end cap 8.

Fig. 4 is a schematic structural view of the copper bar assembly 4 and the insulator 9.

Fig. 5 is a schematic view of the injection molding step 10 at the junction of the root of the second injection molding housing 2 and the first injection molding housing 1.

The figure indicates:

1. a first injection molded housing; 2. a second injection molded housing; 3. a metal housing; 4. a copper bar assembly; 5. a conductive post; 6. a magnetic ring; 7. a filler; 8. an end cap; 9. an insulating member; 10. and (5) injection molding the steps.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar symbols indicate like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.

A filter with protection as shown in fig. 1-5, comprising:

the device comprises a first injection molding shell 1, a second injection molding shell 2, a metal shell 3, a copper bar assembly 4, a conductive column 5, a magnetic ring 6, a filling body 7, an end cover 8, an insulating piece 9 and an injection molding step 10.

In this embodiment:

as shown in fig. 1, 4 and 5, the second injection molding shell 2 is sleeved outside the copper bar assembly 4, and the copper bar assembly 4 is provided with a conductive post 5 extending out of the second injection molding shell 2. The copper bar assembly 4 comprises a first copper bar, a second copper bar and a third copper bar; the first copper bar, the second copper bar and the third copper bar are arranged in parallel and opposite, and each copper bar head is provided with a conductive column 5. The conductive column 5 is columnar and is vertically arranged downwards; the first copper bar is arranged right above the second copper bar, and the second copper bar is arranged right above the third copper plate; the first copper bar, the second copper bar and the third copper bar tail extend into the injection molding shell 1 respectively. Wherein the conductive post 5 on the first copper bar has a portion embedded in the second injection-molded housing 2, the end of the conductive post 5 of the first copper bar is provided with an insulating member 9, and the insulating member 9 has a portion embedded in the second injection-molded housing 2, and the insulating member 9 is opposite to the second copper bar. The insulating part 9 is sleeved at the joint of the conductive column 5 of the first copper bar and the second injection molding shell 2, so that the conductive column 5 is easy to empty when the first copper bar is placed in an injection mold, and deformation of the first copper bar due to extrusion and other reasons in the injection molding process is avoided. The second injection molding shell 2 is further provided with a first injection molding shell 1, the connection part of the second injection molding shell 2 and the first injection molding shell 1 is provided with an injection molding step 10, the injection molding step 10 is positioned between two adjacent copper bars in the first copper bar, the second copper bar and the third copper bar, and the injection molding step 10 is an insulator and can achieve the effect of increasing the creepage distance.

As shown in fig. 2, the metal housing 3 is embedded into the first injection housing 1 by being put into a mold during the second injection molding, thereby forming a whole and reducing the influence of external force on the filter effect. The metal shell 3 is sleeved on the outermost side of the second injection molding shell 2, and a containing cavity is formed between the metal shell 3 and the second injection molding shell 2. The insulating filling body 7 and the magnetic ring 6 are arranged in the accommodating cavity formed between the metal shell and the second injection molding shell 2, the magnetic ring 6 is sleeved on the second injection molding shell 2, and the insulating filling body 7 is filled in the space between the metal shell 3 and the magnetic ring 6, so that the magnetic ring can be insulated and fixed. The insulating filling body 7 is made of polyurethane rubber material, a gap between the metal shell 3 and the second injection molding shell 2 is sealed by an end cover 8, and the joint of the copper bar assembly 4 and the second injection molding shell 2 is sealed by insulating rubber and smeared with one circle.

In this embodiment, as shown in fig. 3, an insulating part 9 is disposed at the end of the first copper bar conductive column 5, the insulating part 9 is sleeved at the end of the conductive column, and the lower end of the insulating part 9 is embedded into the injection molding shell 2, so that the first copper bar is easy to be empty when placed in an injection mold, and the situation that the conductive column 5 of the first copper bar is in extrusion contact with the second injection molding shell 2 directly in the injection molding process is avoided, so that deformation occurs.

In this embodiment, as shown in fig. 1, the mode of setting up metal casing 3 protection magnetic core on second injection molding shell 2 avoids the thin wall that traditional integration mode formed of moulding plastics to appear the phenomenon of lack of glue, leads to the product protection not enough, and metal casing adopts aluminum product to make, and the holding chamber between metal casing 3 and the second injection molding shell 2 is sealed with end cover 8 simultaneously, and consequently metal casing 3's antimagnetic interference ability and mechanical protection are stronger for the filter effect of magnetic core is stronger, has prolonged the life of product.

In this embodiment, as shown in fig. 5, one end of the second injection molding shell 2 far away from the copper bar is connected with the first injection molding shell 1, the connection is provided with an injection molding step 10, and the injection molding step 10 is located between two adjacent copper bars in the first copper bar, the second copper bar and the third copper bar, so that the problem that the creepage distance of the copper bar assembly 4 is insufficient due to the occurrence of a gap at the conventional secondary injection molding joint is avoided, the pressure resistance of the product is more superior, the quality performance of the product and the safety protection of the whole vehicle are enhanced, and the service life of the product is prolonged.

In this embodiment, preferably, as shown in fig. 2, the inner cavity of the metal shell 3 is filled with polyurethane glue to wrap the nanocrystalline magnetic ring 6, then the nanocrystalline magnetic ring 6 is not damaged by vibration in the running process of the vehicle, and meanwhile, the polyurethane glue has good heat dissipation effect and good heat dissipation performance matched with the metal shell 3, so that the product can quickly dissipate heat emitted by continuous working in the using process, the product cannot soften plastics due to high-temperature heating, and the protection effect of the product on the magnetic ring 6 is improved.

It is to be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counter-clockwise," "axial," "radial," "circumferential," and the like are directional or positional relationships as indicated based on the drawings, merely to facilitate describing the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (10)

1. A filter with protection function, comprising:

a copper bar assembly (4);

the second injection molding shell (2), the second injection molding shell (2) is sleeved outside the copper bar assembly (4), and the copper bar assembly (4) is provided with a conductive column (5) extending out of the second injection molding shell (2);

the metal shell (3), metal shell (3) cover is established in the outside of second shell (2) of moulding plastics, form between metal shell (3) and second shell (2) of moulding plastics and hold the chamber.

2. The filter with protection function according to claim 1, characterized in that the copper bar assembly (4) comprises a first copper bar, a second copper bar, a third copper bar; the first copper bar, the second copper bar and the third copper bar are arranged in parallel and opposite to each other, and the head of each copper bar is provided with a conductive column (5); the conductive column (5) on the first copper bar is provided with a part embedded into the second injection molding shell (2), the tail end of the first copper bar conductive column (5) is provided with an insulating piece (9), the insulating piece (9) is provided with a part embedded into the second injection molding shell (2), and the insulating piece (9) is opposite to the second copper bar.

3. The filter with the protection function according to claim 2, wherein a first injection molding shell (1) is further arranged on the second injection molding shell (2), an injection molding step (10) is arranged at the joint of the second injection molding shell (2) and the first injection molding shell (1), and the injection molding step (10) is located between two adjacent copper bars in the first copper bar, the second copper bar and the third copper bar.

4. A filter with protection according to claim 3, characterized in that the first injection-molded housing (1) is provided with positioning holes.

5. A filter with protection according to claim 1, characterized in that the metal housing (3) is made of aluminium material.

6. A filter with protection function according to claim 1, characterized in that a magnetic ring (6) is arranged in a receiving cavity formed between the metal housing (3) and the second injection-molded housing (2).

7. A filter with protection according to any of claims 1-6, characterized in that the receiving cavity is filled with an insulating filler (7).

8. A filter with protection according to claim 7, characterized in that the insulating filler (7) is made of polyurethane glue material.

9. A filter with protection according to claim 1, characterized in that the junction of the copper bar assembly (4) and the second injection-molded housing (2) is sealed with an insulating glue.

10. A filter with protection according to claim 1, characterized in that the receiving space between the metal housing (3) and the second injection-molded housing (2) is closed with an end cap (8).