CN217405675U

CN217405675U - Low-pass component and filter

Info

Publication number: CN217405675U
Application number: CN202221289939.0U
Authority: CN
Inventors: 谢新成; 唐梦军; 王磊; 马基良; 杨鹤功; 刘学鑫
Original assignee: Anhui Tatfook Technology Co Ltd
Current assignee: Anhui Tatfook Technology Co Ltd
Priority date: 2022-05-26
Filing date: 2022-05-26
Publication date: 2022-09-09
Anticipated expiration: 2032-05-26

Abstract

The application relates to the technical field of communication, and provides a low-pass assembly and a filter, wherein the low-pass assembly comprises: the low pass piece, the low pass piece includes: a main body portion; the extension part is provided with a first end and a second end, the first end is connected with the main body part, and the second end is positioned on one side of the main body part and forms a gap with the main body part; and the insulating fixing piece is connected to the main body part and the second end, and the first end is positioned outside the insulating fixing piece. The application provides a low pass subassembly can effectively restrain the extension and take place to warp, reduces the low possibility that leads to the piece and assemble the cavity inner wall contact of extension and wave filter when the cavity of wave filter is inside, and insulating mounting need not to connect the extension wholly, and the cooperation of being connected between insulating mounting and the low pass piece of not only being convenient for does benefit to the volume and the weight that reduce insulating mounting moreover, does benefit to reduce cost, does benefit to the miniaturization and the lightweight of wave filter.

Description

Low-pass component and filter

Technical Field

The present application relates to the field of communications technologies, and in particular, to a low pass component and a filter.

Background

The low pass filter can be used on a filter to filter high-frequency harmonic waves and high-frequency noise in signals, and plays a role in high-frequency suppression.

In the creation process of the technical scheme, the inventor finds that an extending structure extending outwards is usually arranged on the low pass sheet, and the extending structure is easy to deform in the production and transportation processes of the low pass sheet, so that the signal transmission is influenced, and when the low pass sheet is assembled inside a cavity of a filter, the extending structure on the low pass sheet is easy to contact with the inner wall of the cavity to cause short circuit.

SUMMERY OF THE UTILITY MODEL

The present application provides a low pass component and a filter to solve the problem that the extension structure of the low pass filter is easily deformed in the related art.

To achieve the above object, a first aspect of the present application provides a low pass component, including: a low pass sheet, the low pass sheet comprising: a main body portion; the extension part is provided with a first end and a second end, the first end is connected with the main body part, and the second end is positioned on one side of the main body part and forms a gap with the main body part; and the insulating fixing piece is connected to the main body part and the second end, and the first end is positioned outside the insulating fixing piece.

In one embodiment, the extension comprises: a first section, one end of the first section being the first end; one end of the second section is connected with the other end, far away from the main body part, of the first section in a bending mode, and the other end, far away from the first section, of the second section is the second end; wherein the second end is located inside the insulating fixture and the second section extends to the outside of the insulating fixture; the first section is located outside of the insulating fixture.

In one embodiment, the number of the extension portions is plural, two adjacent extension portions are taken as an extension portion group, and the second ends of two extension portions in each extension portion group are connected to one insulation fixing member.

In one embodiment, the second ends of the two extending portions in the extending portion group are disposed opposite to each other, and the two extending portions are respectively located on two opposite sides of the insulating fixing member connected to the extending portion group.

In one embodiment, the insulation fixing member comprises a base, a first protruding portion and a second protruding portion connected to the same side of the base, the first protruding portion and the second protruding portion are arranged at intervals, the fixing groove is formed between the first protruding portion, the second protruding portion and the base, and an opening communicated with the fixing groove is formed between one end, away from the base, of the first protruding portion and one end, away from the base, of the second protruding portion; the insulating fixing piece is sleeved on the main body part and the second end through the fixing groove.

In one embodiment, a first limiting part is convexly arranged on the inner side wall of the fixing groove, and the first limiting part is arranged at a distance from the base part; the main body part is positioned between the base part and the first limiting part, and the second end is positioned between the first limiting part and the opening; or, the second end is located between the base and the first limiting part, and the main body part is located between the first limiting part and the opening.

In one embodiment, a second position-limiting portion is further protruded on an inner side wall of the fixing groove, the second position-limiting portion and the first position-limiting portion are arranged at an interval, and the second position-limiting portion is closer to the opening than the first position-limiting portion; the main body part is positioned between the base part and the first limiting part, and the second end is positioned between the first limiting part and the second limiting part; or, the second end is located between the base and the first limiting part, and the main body part is located between the first limiting part and the second limiting part.

In one embodiment, the main body portion or the extension portion has a limiting groove, and the insulating fixing member is limited in the limiting groove.

In one embodiment, the main body part or the extension part is convexly provided with a first stop part and a second stop part, and the first stop part and the second stop part are arranged at intervals; the insulating fixing piece is limited between the first stop part and the second stop part.

In one embodiment, the insulating fixing piece and the low through sheet are of an injection molding integrated structure.

A second aspect of the present application provides a filter comprising: a cavity; and the low pass assembly of any of the above embodiments, wherein the low pass piece is disposed inside the cavity through the insulating fixing member.

One or more technical solutions described above in the embodiments of the present application have at least the following technical effects or advantages:

according to the low-pass assembly provided by the embodiment of the application, the low-pass piece and the insulating fixing piece are arranged, the low-pass piece comprises the main body part and the extending part, the first end of the extending part is connected to the main body part, the second end of the extending part is located on one side of the main body part, a gap is formed between the second end of the extending part and the main body part, and the arrangement of the extending part and the second end is favorable for forming a zero point so that the inhibiting performance of the low-pass piece can be improved; the insulating fixing piece is connected to the main body part and the second end, so that the structural stability and reliability of the low-pass sheet can be enhanced, the second end of the extension part can be effectively inhibited from deforming relative to the main body part, the signal transmission stability of the low-pass sheet is improved, the possibility that the extension part is contacted with the inner wall of the cavity of the filter when the low-pass sheet is assembled in the cavity of the filter is effectively reduced, and the insulating fixing piece is insulated and cannot interfere with the normal work of the low-pass sheet; and, first end is located the outside of insulating mounting, therefore insulating mounting connect in main part and second end can, and need not to connect the extension whole, not only be convenient for the cooperation of being connected between insulating mounting and the low pass piece, do benefit to the volume and the weight that reduce insulating mounting moreover, do benefit to reduce cost, do benefit to the miniaturization and the lightweight of wave filter.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a low pass module according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of a low pass device according to another embodiment of the present application;

FIG. 3 is a schematic diagram of another view of the low pass element of FIG. 2;

FIG. 4 is an exploded view of the low pass module of FIG. 2;

fig. 5 is a schematic front view of an insulating fixing member according to an embodiment of the present application;

FIG. 6 is a perspective view of the insulating fixture of FIG. 5;

FIG. 7 is a schematic diagram of a low pass element according to another embodiment of the present application;

FIG. 8 is a schematic structural diagram of a low pass element according to yet another embodiment of the present application;

FIG. 9 is a schematic view of the insulating fixture of FIG. 8;

fig. 10 is a schematic structural diagram of a filter using the low-pass component in fig. 8 according to an embodiment of the present application.

Wherein, in the figures, the respective reference numerals:

100. a low pass component; 10. a low-pass sheet; 11. a main body portion; 111. an input end; 112. an output end; 12. an extension portion; 1201. a first end; 1202. a second end; 20. an insulating fixing member; 121. a first stage; 122. a second stage; 120. an extension group; 201. fixing grooves; 21. a base; 22. a first protruding portion; 23. a second protruding portion; 202. an opening; 24. a first limiting part; 25. a second limiting part; 1101. a limiting groove; 1102. a first stopper portion; 1103. a second stop portion; 30. a first insulating support; 40. a second insulating support;

1000. a filter; 200. a cavity; 210. mounting grooves; 300. and (7) a cover plate.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and intended to explain the present application and should not be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "assembled," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In the creation process of implementing the technical solution of the present application, the inventor finds that, an extending structure (which may be an extending structure of various shapes) extending outward is generally disposed on the low pass sheet, and during the production (for example, manufacturing by stamping and electroplating) and transportation of the low pass sheet, and when the low pass sheet is assembled inside the cavity of the filter and is subjected to an external force (for example, when the filter is subjected to vibration), the extending structure is easily deformed, which not only affects the transmission of signals, but also when the low pass sheet is assembled inside the cavity of the filter, the extending structure on the low pass sheet is easily contacted with the inner wall of the cavity to cause a short circuit.

Based on this, in order to improve the technical problems that the extension structure of the low-pass filter is easy to deform and the short circuit is easy to occur inside the cavity assembled in the filter in the related art, the inventor proposes the following scheme.

Referring to fig. 1 to 4, a low pass element 100 applicable to a filter is provided in an embodiment of the present application. The low pass assembly 100 includes a low pass sheet 10 and an insulating fixture 20, wherein:

the low-pass sheet 10 includes a main body portion 11 and an extension portion 12. The main body 11 is a main body of the low-pass sheet 10, and may be a sheet structure having various shapes (for example, the main body may have a plurality of portions having different cross-sectional areas, and the cross-sectional area is an area of a cross section perpendicular to a longitudinal direction of the main body 11), and may be specifically set according to a required performance index, which is not limited herein. The extension portion 12 has a first end 1201 and a second end 1202, the first end 1201 is connected to the main body portion 11, and the second end 1202 is located on one side of the main body portion 11 with a gap formed between the main body portion 11 and the first end 1201. The structure of the extension portion 12, i.e., the structure extending to the outside of the main body portion 11, may be various shapes, such as a straight structure (e.g., a vertical or inclined line), a hook structure, a bent structure, an arc structure, etc., but is not limited thereto.

It should be understood that the first end 1201 does not refer to an end or an end point of the extension 12, but refers to a section of the extension 12 near the main body 11, and has a certain length; similarly, the second end 1202 does not refer to an end or an end point of the extension 12, but refers to a section of the extension 12 away from the main body 11, and has a certain length.

The insulating fastener 20 is connected to the main body 11 and the second end 1202, and the insulating fastener 20 may be a structural member having various shapes and may be connected to the main body 11 and the second end 1202 by various connection methods. The first end 1201 is located outside the insulating fixture 20. It is understood that the insulating fixing member 20 is a structural member having insulating properties, and may be made of various insulating materials, such as, but not limited to, plastic, rubber, etc.

As can be seen from the above, in the low pass assembly 100 provided in the embodiment of the present application, by providing the low pass sheet 10 and the insulating fixing member 20, the low pass sheet 10 includes the main body portion 11 and the extending portion 12, the first end 1201 of the extending portion 12 is connected to the main body portion 11, the second end 1202 of the extending portion 12 is located on one side of the main body portion 11 and forms a gap with the main body portion 11, and the arrangement of the extending portion 12 and the second end 1202 is beneficial to forming a zero point, so that the suppression performance of the low pass sheet 10 can be improved; the insulating fixing member 20 is connected to the main body portion 11 and the second end 1202, so that the structural stability and reliability of the low pass filter 10 can be enhanced, the second end 1202 of the extension portion 12 can be effectively inhibited from deforming relative to the main body portion 11, the signal transmission stability of the low pass filter 10 can be further improved, the possibility that the extension portion 12 is in contact with the inner wall of the cavity of the filter when the low pass filter 10 is assembled in the cavity of the filter can be effectively reduced, and the insulating fixing member 20 is insulated and cannot interfere with the normal work and performance of the low pass filter 10; further, since the first end 1201 is located outside the insulating fixture 20, the insulating fixture 20 can be connected to the main body 11 and the second end 1202 without connecting the entire extension portion 12, which not only facilitates the connection and engagement between the insulating fixture 20 and the low pass sheet 10, but also facilitates the reduction in size and weight of the insulating fixture 20, the reduction in cost, and the miniaturization and weight reduction of the filter.

It is understood that the number of the extending portions 12 may be one or more, and when the number of the extending portions 12 is plural, each extending portion 12 may be located on the same side of the main body portion 11, and of course, the extending portions 12 may be respectively provided on two opposite sides of the main body portion 11.

In one embodiment, referring to fig. 1 to 4, the extension portion 12 includes a first section 121 and a second section 122, and one end of the first section 121 is a first end 1201. One end of the second segment 122 is connected with the other end of the first segment 121 far away from the main body 11 in a bending manner, and the bending angle can be an acute angle, a right angle or an obtuse angle and can be set according to actual needs. The other end of the second section 122 away from the first section 121 is a second end 1202. Wherein second end 1202 is located inside of insulative fastener 20 (i.e., at least a portion of second end 1202 is located inside of insulative fastener 20; second end 1202 may be located entirely inside of insulative fastener 20, as shown, for example, in fig. 2 and 3; second end 1202 may also be located partially inside of insulative fastener 20 and extend partially outside of insulative fastener 20, as shown, for example, in fig. 8, with an end of second end 1202 extending outside of insulative fastener 20), second segment 122 extending outside of insulative fastener 20, and first segment 121 being located outside of insulative fastener 20.

With such an arrangement, since the extension portion 12 includes the first segment 121 and the second segment 122 connected by bending, the extension portion 12 is substantially in a bent structure, which is beneficial to forming a zero point and improving the suppression performance of the low-pass sheet. Moreover, since the second end 1202 is located inside the insulating fixing member 20, the second section 122 extends to the outside of the insulating fixing member 20, and the first section 121 is located outside the insulating fixing member 20, the insulating fixing member 20 and the second section 122 are connected to a side away from the first section 121, that is, only connected to a small portion of the extension portion 12, and most of the side is exposed outside the insulating fixing member 20, which not only can inhibit the second section 122 from deforming, but also is convenient for the connection and cooperation between the insulating fixing member 20 and the low pass sheet 10, and is also beneficial to reducing the volume and weight of the insulating fixing member 20, and is beneficial to reducing the cost, and is beneficial to the miniaturization and the light weight of the filter.

In one embodiment, referring to fig. 2 to 4, the number of the extending portions 12 is plural, and two adjacent extending portions 12 are an extending portion group 120; for example, when the number of the extensions 12 is two or three, one extension group 120 may be formed, when the number of the extensions 12 is four or five, two extension groups 120 may be formed, when the number of the extensions 12 is six or seven, three extension groups 120 may be formed, and so on, and four and more extension groups 120 may be formed; of course, when the number of the extending portions 12 is three or more, not all of the extending portions 12 need to form the extending portion group 120 with the adjacent extending portions 12, that is, when the number of the extending portions 12 is enough to form a plurality of extending portion groups 120, only a part of the extending portions 12 may form the extending portion group 120, and the remaining extending portions 12 are relatively independent without forming the extending portion group 120, for example, when the number of the extending portions 12 is six or seven, only one or two extending portion groups 120 may be formed, and the remaining extending portions 12 are relatively independent; the number of the specific extension sets 120 may be set according to actual requirements, for example, the number may be selected according to the resonant cavity arrangement inside the cavity of the filter, the index of the filter, and the like. The second ends 1202 of the two extending portions 12 in each extending portion set 120 are connected to an insulating fixing member 20, that is, one extending portion set 120 is correspondingly connected to one insulating fixing member 20.

With this arrangement, since the second ends 1202 of the two extending portions 12 in each extending portion set 120 are connected to an insulating fixing member 20, compared with the case where each extending portion 12 is connected to an insulating fixing member 20 alone, the number of insulating fixing members 20 can be reduced by fully using the insulating fixing members 20, so as to further reduce the volume occupation and further reduce the weight, further reduce the cost, and facilitate the miniaturization and light weight of the filter.

Alternatively, referring to fig. 2 to 4, the two extending portions 12 of the extending portion set 120 may be located on the same side of the main body portion 11. Of course, in other embodiments, the two extending portions 12 of the extending portion group 120 may be located on two opposite sides of the main body portion 11.

Alternatively, in one embodiment, referring to fig. 2 to 4, the number of the extension sets 120 is multiple, the number of the insulating fixing members 20 is multiple, and the insulating fixing members 20 correspond to the extension sets 120 one by one.

Due to the arrangement, since the number of the extension part group 120 and the number of the insulating fixing pieces 20 are multiple and are in one-to-one correspondence, the insulating fixing pieces 20 can be further fully utilized, and the number of the insulating fixing pieces 20 is reduced, so that the volume occupation and the weight are further reduced, and the miniaturization and the light weight of the filter are facilitated; and the number of the extension part groups 120 is plural, that is, the number of the extension parts 12 is larger, which is beneficial to forming a plurality of zero points and further improving the suppression performance.

For example, referring to fig. 2 to 4, the number of the extension portions 12 is six, and the extension portions are sequentially a first extension portion, a second extension portion, a third extension portion, a fourth extension portion, a fifth extension portion and a sixth extension portion along the length direction of the main body portion 11, the first extension portion and the second extension portion form an extension portion group 120, the third extension portion and the fourth extension portion form an extension portion group 120, the fifth extension portion and the sixth extension portion form an extension portion group 120, three extension portion groups 120 are formed, the second ends 1202 of two extension portions 12 in each extension portion group 120 are connected to an insulating fixing member 20, that is, the second end 1202 of the first extension and the second end 1202 of the second extension are connected to an insulating fixing member 20, the second end 1202 of the third extension and the second end 1202 of the fourth extension are connected to an insulating fixing member 20, and the second end 1202 of the fifth extension and the second end 1202 of the sixth extension are connected to an insulating fixing member 20.

It should be noted that, in other embodiments, the number of the extension group 120 may also be one. In this case, the number of the extending portions 12 may be two, three, or more than three, and in this case, it can be regarded that only two adjacent extending portions 12 are connected to an insulating fixing member 20 as the extending portion group 120, and the remaining extending portions 12 may be respectively connected to an insulating fixing member 20 separately.

Optionally, in an embodiment, referring to fig. 2 to 4, the second ends 1202 of the two extending portions 12 in the extending portion set 120 are disposed opposite to each other (that is, the second ends 1202 of the two extending portions 12 extend toward each other), and the two extending portions 12 are located on two opposite sides of the insulating fixing member 20 connected to the current extending portion set 120 respectively; that is, the insulating fastener 20 is located between the two extensions 12 of the current extension set 120, and the second ends 1202 of both extensions 12 extend toward the insulating fastener 20.

With such an arrangement, the insulating fixing member 20 is located between the two extending portions 12 of the extending portion group 120 and can be connected to the second ends 1202 of the two extending portions 12, so that the two extending portions 12 of the extending portion group 120 are more reasonably arranged relative to the insulating fixing member 20, the structural compactness can be improved, the shape and the structure of the insulating fixing member 20 can be more regularly and simply arranged, and the two extending portions 12 of the extending portion group 120 are certainly not easy to interfere with each other.

It is understood that the second ends 1202 of the two extending portions 12 disposed opposite to each other may be opposite to each other, or may be staggered by a certain distance, which may be specifically set according to the performance index requirement of the low pass sheet 10.

For example, referring to fig. 8 and 10, the two extending portions 12 of the extending portion group 120 are disposed opposite to each other and staggered from each other by a certain distance, and the two extending portions 12 respectively extend toward each other by a certain distance, so that the two extending portions 12 overlap each other along a projection of the low pass sheet 10 in the height direction (i.e., along a projection of the main body portion 11 toward the extending portions 12).

With such an arrangement, due to the projection along the height direction of the low pass sheet 10, the two extending portions 12 of the extending portion group 120 are overlapped, so that compared with the case of no overlapping, not only is the space saved, but also the length of the main body portion 11 is favorably shortened, and the cost is reduced; meanwhile, the contact area between the two extending portions 12 of the extending portion set 120 and the insulating fixing member 20 is increased, so that the structural stability of the insulating fixing member 20 connected with the extending portion set 120 is improved, and the possibility of deformation of the extending portions 12 can be further reduced.

It should be noted that in other embodiments, the insulating fixing member 20 may not be located between the two extending portions 12 of the extending portion group 120, and the structure of the insulating fixing member 20 needs to be more complicated than the case where the insulating fixing member 20 is located between the two extending portions 12 of the extending portion group 120.

In one embodiment, referring to fig. 2 and fig. 4, the opposite ends of the main body 11 are an input end 111 and an output end 112, respectively, the input end 111 may be connected to other devices or components for signal input, and the output end 112 may be connected to other devices or components for signal output.

Alternatively, referring to fig. 2 and 4, the low pass assembly 100 may include a first insulating support 30 and a second insulating support 40, wherein the first insulating support 30 is connected to the input end 111 and can support the input end 111; the second insulating support 40 is connected to the output terminal 112 and may support the output terminal 112. The first and second insulating

supports

30 and 40 may have the same shape and structure as the insulating fixing member 20, and of course, may have a shape and structure different from that of the insulating fixing member 20.

In one embodiment, referring to fig. 2 and 4, the low pass sheet 10 is an integrally formed integral structure, and the main body 11 and the extension 12 are an integrally formed integral structure, for example, but not limited to, the low pass sheet 10 can be manufactured by stamping, casting, wire cutting, etching, and the like.

So set up, can improve the structural strength and the reliability of low logical piece 10, and production and processing is convenient, is suitable for batch production.

Of course, in other embodiments, the main body 11 and the extension 12 may be formed separately and connected, for example, by welding, clamping, etc.

In one embodiment, referring to fig. 1 to 6, the insulating fixing member 20 is provided with fixing grooves 201 penetrating through two opposite sides of the insulating fixing member 20, and the insulating fixing member 20 is sleeved on the main body 11 and the second end 1202 through the fixing grooves 201.

With this arrangement, since the insulating fixing member 20 is sleeved on the main body portion 11 and the second end 1202 through the fixing groove 201, a portion of the main body portion 11 connected to the insulating fixing member 20 is located inside the insulating fixing member 20, and a portion of the second end 1202 connected to the insulating fixing member 20 is also located inside the insulating fixing member 20 (the second end 1202 may be located inside the fixing groove 201 completely, or may be located inside the fixing groove 201 partially and extend to the outside of the fixing groove 201), which is beneficial to improving the reliability and stability of the connection between the insulating fixing member 20 and the main body portion 11 and the second end 1202, and further beneficial to the insulating fixing member 20 to inhibit the second end 1202 from deforming relative to the main body portion 11.

Alternatively, in an embodiment, referring to fig. 5, 6 and 9, the insulating fixing member 20 includes a base 21, and a first protrusion 22 and a second protrusion 23 connected to the same side of the base 21, the first protrusion 22 and the second protrusion 23 are spaced apart from each other, a fixing groove 201 is formed between the first protrusion 22, the second protrusion 23 and the base 21, and an opening 202 communicating with the fixing groove 201 is formed between an end of the first protrusion 22 away from the base 21 and an end of the second protrusion 23 away from the base 21.

With this arrangement, when the insulating fixing element 20 and the low-voltage through-chip 10 are separately molded and assembled, the insulating fixing element 20 may sequentially penetrate through the main body portion 11 and the second end 1202 through the opening 202, or sequentially penetrate through the second end 1202 and the main body portion 11, and the main body portion 11 and the second end 1202 may be clamped between the first protruding portion 22 and the second protruding portion 23, so as to facilitate assembly of the insulating fixing element 20. If the opening 202 is not provided and the insulating fixing member 20 is closed, the insulating fixing member 20 needs to be inserted from the end of the main body 11 and moved along the length direction of the main body 11 until the second end 1202 of the extension portion 12 is located in the fixing groove 201, so that the insulating fixing member 20 can be assembled, or the insulating fixing member 20 needs to be provided in two detachable parts, and the two parts are respectively buckled from the two sides of the main body 11 and the second end 1202 to be assembled.

Optionally, referring to fig. 1 to 6, a first position-limiting portion 24 is convexly disposed on an inner side wall of the fixing groove 201, the first position-limiting portion 24 is located in the fixing groove 201, and the first position-limiting portion 24 may be a protruding structure with various shapes; the inner side wall of the fixing groove 201 includes a side wall of the first protrusion 22 facing the second protrusion 23 and a side wall of the second protrusion 23 facing the first protrusion 22, and may be a side wall of the first protrusion 22 facing the second protrusion 23 and a side wall of the second protrusion 23 facing the first protrusion 22, where the first limiting portion 24 is respectively protruded on the side wall of the first protrusion 22 (fig. 5 and 6 show this case exemplarily), of course, only the first limiting portion 24 may be protruded on the side wall of the first protrusion 22 facing the second protrusion 23, or only the first limiting portion 24 may be protruded on the side wall of the second protrusion 23 facing the first protrusion 22. The first position-limiting portion 24 is spaced from the base portion 21. The main body 11 is disposed through the fixing groove 201 and is limited between the base 21 and the first limiting portion 24, and the second end 1202 is located between the first limiting portion 24 and the opening 202.

With such an arrangement, the main body portion 11 can be limited between the base portion 21 and the first limiting portion 24 by the first limiting portion 24, that is, the insulating fixing member 20 is limited on the main body portion 11 by the base portion 21 and the first limiting portion 24, so that the insulating fixing member 20 can be limited from being separated from the main body portion 11, the stability of the connection between the insulating fixing member 20 and the main body portion 11 is improved, and the stability of the assembly between the insulating fixing member 20 and the low-voltage sheet 10 is further improved.

Of course, in other embodiments, the second end 1202 may be located between the base 21 and the first position-limiting portion 24, and the main body 11 is located between the first position-limiting portion 24 and the opening 202.

It can be understood that when the first protruding portion 22 and the second protruding portion 23 are respectively protruded with the first limiting portion 24, a gap may be provided between the first limiting portion 24 on the first protruding portion 22 and the first limiting portion 24 on the second protruding portion 23, so that the main body 11 or the second end 1202 enters between the first limiting portion 24 and the base 21 through the gap between the two first limiting portions 24, so as to facilitate the assembly of the insulating fixing member 20 and the low pass sheet 10 by separate molding. Of course, when only the first protrusion 22 is protruded with the first limiting portion 24, there may be a gap between the first limiting portion 24 and the second protrusion 23, so that the main body 11 or the second end 1202 enters between the first limiting portion 24 and the base 21 through the gap between the first limiting portion 24 and the second protrusion 23. When only the first protruding portion 24 is protruded from the second protruding portion 23, a gap may be provided between the first protruding portion 24 and the first protruding portion 22, so that the main body 11 or the second end 1202 enters between the first limiting portion 24 and the base 21 through the gap between the first limiting portion 24 and the first protruding portion 22.

Optionally, referring to fig. 8 and 9, a second limiting portion 25 may be further disposed on an inner side wall of the fixing groove 201 in a protruding manner, where the second limiting portion 25 is located in the fixing groove 201, and the second limiting portion 25 may be a protruding structure with various shapes; second limiting portions 25 may be respectively protruded from the inner side wall of first protrusion 22 and the inner side wall of second protrusion 23 (fig. 9 shows this case exemplarily), of course, only the inner side wall of first protrusion 22 may be protruded with second limiting portions 25, or only the inner side wall of second protrusion 23 may be protruded with second limiting portions 25. The second position-limiting portion 25 and the first position-limiting portion 24 are disposed at an interval, and the second position-limiting portion 25 is closer to the opening 202 than the first position-limiting portion 24. The second end 1202 is located between the base 21 and the first position-limiting portion 24, and the main body 11 is located between the first position-limiting portion 24 and the second position-limiting portion 25.

With such an arrangement, the second end 1202 can be limited between the base portion 21 and the first limiting portion 24 by the arrangement of the first limiting portion 24 and the second limiting portion 25, and the main body portion 11 is limited between the first limiting portion 24 and the second limiting portion 25, so that the insulating fixing member 20 can be effectively limited from being separated from the main body portion 11 and the second end 1202, and the stability of assembling the insulating fixing member 20 and the low pass piece 10 is further improved.

Of course, in some other embodiments, the main body 11 may be located between the base 21 and the first limiting portion, and the second end 1202 may be located between the first limiting portion 24 and the second limiting portion 25.

In other embodiments, only the first stopper portion 24 may be provided, and the second stopper portion 25 may not be provided. In other embodiments, the first and second position-limiting

portions

24 and 25 may not be provided.

Alternatively, in one embodiment, referring to fig. 8 and 9, the opening 202 is flared, i.e., the width of the opening 202 gradually increases in a direction away from the base 21, i.e., gradually decreases in a direction toward the base 21.

With such an arrangement, the flared opening 202 can play a guiding role, and the main body portion 11 or the extension portion 12 can enter the fixing groove 201 from the opening 202 more smoothly, so that the assembly of the insulating fixing member 20 is more convenient.

Optionally, in an embodiment, referring to fig. 1 to 5 and fig. 9, the main body 11 is formed with a limiting groove 1101, and the insulating fixing member 20 is limited in the limiting groove 1101. Of course, in other embodiments, the extending portion 12 may be provided with the limiting groove 1101, or the main body portion 11 and the extending portion 12 may be provided with the limiting groove 1101 respectively.

So set up, because insulating mounting 20 is spacing in spacing groove 1101, can restrict insulating mounting 20 and take place to remove along the length direction of main part 11, do benefit to and improve insulating mounting 20 and low logical piece 10 matched with stability.

It should be understood that the position of the position-limiting groove 1101 on the main body 11 or the extending portion 12 may be various, for example, the position-limiting groove 1101 may be provided on any one side of the main body 11 or the extending portion 12, or the position-limiting grooves 1101 may be provided on two opposite sides of the main body 11 or the extending portion 12, which is not limited herein.

It should be noted that the insulating holder 20 is not limited to being held by the holding groove 1101. Optionally, in some other embodiments, the main body 11 and/or the extension portion 12 may be provided with a first stop portion 1102 and a second stop portion 1103 in a protruding manner (that is, the main body 11 may be provided with a first stop portion 1102 and a second stop portion 1103 in a protruding manner, the extension portion 12 may be provided with a first stop portion 1102 and a second stop portion 1103 in a protruding manner, and both the main body 11 and the extension portion 12 may be provided with a first stop portion 1102 and a second stop portion 1103 in a protruding manner), the first stop portion 1102 and the second stop portion 1103 are disposed at an interval, and the insulating fixing 20 is retained between the first stop portion 1102 and the second stop portion 1103, so that the insulating fixing 20 is also limited from moving in the length direction of the main body 11.

It is understood that the first stop portion 1102 and the second stop portion 1103 may be disposed at various positions on the main body 11 or the extending portion 12, for example, the first stop portion 1102 and the second stop portion 1103 may be disposed at any side of the main body 11 or the extending portion 12, or the first stop portion 1102 and the second stop portion 1103 may be disposed at two opposite sides of the main body 11 or the extending portion 12, which is not limited herein. The first stop portion 1102 and the second stop portion 1103 may be disposed on the same extension portion 12 at the same time, or disposed on two extension portions 12 of the extension portion group 120.

It should be noted that, in some other embodiments, the limiting groove 1101, the first stop portion 1102 and the second stop portion 1103 may not be provided.

It is understood that the insulating fixing member 20 may be assembled with the low pass sheet 10 by being separately molded, that is, the insulating fixing member 20 is assembled with the low pass sheet 10 after being molded, and is not limited to be sleeved on the main body 11 and the second end 1202 through the fixing groove 201, and may also be assembled with the low pass sheet 10 by using various other assembling methods, such as, but not limited to, plugging, clamping, and the like.

Of course, in some other embodiments, the insulating fixing member 20 and the low pass sheet 10 may be an injection-molded integrated structure, specifically, the insulating fixing member 20, the main body 11 and the second end 1202 are injection-molded integrated structures, that is, the insulating fixing member 20 is injection-molded integrally on the main body 11 and the second end 1202, for example, before the insulating fixing member 20 is molded, the low pass sheet 10 may be pre-embedded in a mold, after an injection molding process is performed, the insulating fixing member 20, the main body 11 and the second end 1202 may form an integrated structure, and the stability of the connection between the insulating fixing member 20 and the low pass sheet 10 may be effectively improved. In this case, the insulating fixture 20 may not have the opening 202.

Referring to fig. 10, an embodiment of the present invention further provides a filter 1000, where the filter 1000 includes a cavity 200 and the low pass element 100 of any of the embodiments, and the low pass element 10 is disposed inside the cavity 200 through an insulating fixing member 20.

Since the filter 1000 provided in the embodiment of the present application adopts the low-pass component 100 described above, the filter 1000 also has the technical effect brought by the technical solution of the low-pass component 100 of any embodiment described above, and is not described herein again. Moreover, because the low-pass sheet 10 is arranged in the cavity 200 through the insulating fixing piece 20, the insulating fixing piece 20 can support and fix the low-pass sheet 10 so as to facilitate the installation of the low-pass sheet 10 in the cavity 200, and meanwhile, the insulating fixing piece 20 also plays a role in inhibiting the deformation of the extension part 12, so that the dual-function filter can be realized, a structural part for supporting the low-pass sheet 10 is not required to be additionally arranged, the structure is simplified, the size is reduced, the weight is reduced, and the miniaturization and the light weight of the filter are facilitated.

In one embodiment, referring to fig. 10, the cavity 200 has a mounting groove 210, and the low pass sheet 10 is disposed in the mounting groove 210 through the insulating fixing member 20; the filter 1000 further includes a cover plate 300, the cover plate 300 covers the mounting groove of the cavity 200, and the cover plate 300 abuts against the insulating fixing member 20, so as to facilitate the limitation of the insulating fixing member 20 through the cover plate 300, limit the insulating fixing member 20 between the bottom wall of the mounting groove 210 and the inner wall of the cover plate 300, and limit the movement of the insulating fixing member 20, thereby improving the assembly stability of the low-pass assembly 100.

It is to be understood that the above description mainly aims to explain innovations of the filter provided by the embodiments of the present application, and the filter provided by the embodiments of the present application may have other elements besides the above elements, and the other elements may be elements of any existing filter, which are well known to those skilled in the art and will not be described herein.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.

Claims

1. A low pass component, the low pass component comprising:

the low lead-through piece, the low lead-through piece includes:

a main body part; and

an extension portion having a first end connected to the main body portion and a second end located at one side of the main body portion with a gap formed therebetween;

and the insulating fixing piece is connected to the main body part and the second end, and the first end is positioned outside the insulating fixing piece.

2. The low pass assembly of claim 1, wherein the extension comprises:

a first section, one end of the first section being the first end; and

one end of the second section is connected with the other end, far away from the main body part, of the first section in a bending mode, and the other end, far away from the first section, of the second section is the second end;

wherein the second end is located inside the insulating fixture and the second section extends to the outside of the insulating fixture; the first section is located outside the insulating fixture.

3. The low pass assembly of claim 1, wherein: the number of the extending parts is multiple, two adjacent extending parts are taken as an extending part group, and the second ends of the two extending parts in each extending part group are connected to one insulating fixing part.

4. A low pass component as claimed in claim 3, wherein: the second ends of the two extending parts in the extending part group are oppositely arranged, and the two extending parts are respectively positioned at two opposite sides of the insulating fixing part connected with the extending part group at present.

5. A low-pass assembly according to any of claims 1 to 4, characterized in that: the insulating fixing piece comprises a base part, a first protruding part and a second protruding part, wherein the first protruding part and the second protruding part are connected to the same side of the base part, the first protruding part and the second protruding part are arranged at intervals, a fixing groove is formed among the first protruding part, the second protruding part and the base part, and an opening communicated with the fixing groove is formed between one end of the first protruding part departing from the base part and one end of the second protruding part departing from the base part; the insulating fixing piece is sleeved on the main body part and the second end through the fixing groove.

6. The low pass component of claim 5, wherein: a first limiting part is convexly arranged on the inner side wall of the fixing groove, and the first limiting part and the base part are arranged at intervals;

the main body part is positioned between the base part and the first limiting part, and the second end is positioned between the first limiting part and the opening; or, the second end is located between the base and the first limiting part, and the main body part is located between the first limiting part and the opening.

7. The low pass component of claim 6, wherein: a second limiting part is convexly arranged on the inner side wall of the fixing groove, the second limiting part and the first limiting part are arranged at intervals, and the second limiting part is closer to the opening than the first limiting part;

the main body part is positioned between the base part and the first limiting part, and the second end is positioned between the first limiting part and the second limiting part; or, the second end is located between the base and the first limiting part, and the main body part is located between the first limiting part and the second limiting part.

8. The lowpass component as set forth in claim 5, wherein: the main body part and/or the extension part are/is provided with a limiting groove, and the insulating fixing part is limited in the limiting groove; and/or

A first stop part and a second stop part are convexly arranged on the main body part and/or the extension part, and the first stop part and the second stop part are arranged at intervals; the insulating fixing piece is limited between the first stop part and the second stop part.

9. The low pass assembly of any of claims 1 to 4, 6 to 8, wherein: the insulating fixing piece and the low through piece are of an injection molding integrated structure.

10. A filter, comprising:

a cavity; and

the low pass assembly of any one of claims 1 to 9, the low pass sheet being disposed inside the cavity by the insulating fixture.