CN210182536U

CN210182536U - Structural capacitor and filter

Info

Publication number: CN210182536U
Application number: CN201921535727.4U
Authority: CN
Inventors: Xiaoxiao Zhang; 张晓晓
Original assignee: Rosenberger Technologies Co Ltd
Current assignee: Prologis Communication Technology Suzhou Co Ltd
Priority date: 2019-09-16
Filing date: 2019-09-16
Publication date: 2020-03-24
Anticipated expiration: 2029-09-16

Abstract

The utility model discloses a structure electric capacity, structure electric capacity is acceptd in the filter cavity, be provided with first connecting portion on structure electric capacity's the lateral wall, be provided with the second connecting portion corresponding with first connecting portion on the inside wall of filter cavity, structure electric capacity connects even portion and filter cavity fixed connection through these two. The utility model also discloses a wave filter. The utility model discloses be connected through matched with connection structure between structure electric capacity and the filter cavity, can make structure electric capacity and filter cavity stable contact, guarantee that ground connection is reliable to improve the PIM.

Description

Structural capacitor and filter

Technical Field

The utility model relates to a structure electric capacity especially relates to a structure electric capacity and wave filter.

Background

The filter is a device for eliminating interference noise signals, and is a circuit element for effectively filtering out a frequency band of a specific frequency or frequencies outside the frequency band. Filters typically include structural capacitive, inductive, and resistive elements.

Wherein, structural capacitor generally includes gas discharge tube, and in the past design, gas discharge tube is direct and filter cavity contact, because gas discharge tube is non-machined product, roughness can't guarantee, so cause gas discharge tube and filter cavity contact not good easily, and after taking place vibrations, also probably take place contact failure to influence the PIM (passive intermodulation) of filter.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's defect, provide a structure electric capacity and wave filter.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a structure electric capacity, structure electric capacity is acceptd in the filter cavity, be provided with first connecting portion on the lateral wall of structure electric capacity, be provided with on the inside wall of filter cavity with first connecting portion matched with second connecting portion, structure electric capacity passes through first connecting portion and second connecting portion and filter cavity fixed connection.

Preferably, the first connecting part and the second connecting part are matched threaded connecting structures.

Preferably, the first connecting portion is an external thread arranged on an outer side wall of the structural capacitor, and the second connecting portion is an internal thread arranged on an inner side wall of the filter cavity.

Preferably, the structural capacitor includes a gas discharge tube and a metal case disposed outside the gas discharge tube, and the first connection portion is disposed on an outer sidewall of the metal case.

Preferably, the metal housing and the gas discharge tube are welded and fixed.

Preferably, an accommodating cavity for accommodating a gas discharge tube is formed in the metal shell, the gas discharge tube comprises two opposite electrode ends, one end of the electrode end is welded with the bottom of the metal shell, and the other end of the electrode end extends out of the accommodating cavity.

Preferably, the bottom of the metal case is formed with a through-hole receiving the electrode end of the gas discharge tube, and the inner diameter of the through-hole is equal to or slightly larger than the outer diameter of the electrode end of the gas discharge tube.

The utility model discloses still announced another technical scheme: a filter comprises the capacitor with the structure.

The utility model has the advantages that: the utility model discloses be connected through matched with connection structure between structure electric capacity and the filter cavity, can make structure electric capacity and filter cavity stable contact, guarantee that ground connection is reliable to improve the PIM, can increase the yields of filter cavity, reduce the condition emergence because of the bad product rework that causes.

Drawings

Fig. 1 is a schematic cross-sectional view of the filter of the present invention;

FIG. 2 is a schematic cross-sectional view of FIG. 1;

fig. 3 is a schematic view of a split structure of the capacitor of the present invention;

fig. 4 is a schematic structural view of the structural capacitor of the present invention;

FIG. 5 is a schematic cross-sectional view taken along the line C-C in FIG. 4;

reference numerals:

1. the filter comprises a filter cavity, 11, a second connecting part, 2, a structural capacitor, 21, a gas discharge tube, 211, an electrode end, 22, a metal shell, 221, a first connecting part, 222, an accommodating cavity, 223, a through hole, 3 and a filter.

Detailed Description

The technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention.

The utility model discloses a structure electric capacity and wave filter is connected through matched with connection structure between structure electric capacity 2 and the wave filter cavity 1, makes structure electric capacity 2 and wave filter cavity 1 steady contact, guarantees that ground connection is reliable to improve the PIM of wave filter.

Referring to fig. 1 to 5, the present invention discloses a structural capacitor 2, which is accommodated in a filter cavity 1 and is fixedly connected to the filter cavity 1 through a connection structure. Specifically, a first connecting portion 221 is disposed on the structural capacitor 2, a second connecting portion 11 matched with the first connecting portion 221 is disposed on the filter cavity 1, and the structural capacitor 2 and the filter cavity 1 are connected through the two connecting portions.

Specifically, the first connection portion 221 is disposed on an outer sidewall of the structural capacitor 2, and the second connection portion 11 is disposed on an inner sidewall of the filter cavity 1, corresponding to a position where the first connection portion 221 is disposed. Specifically, the first connection portion 221 is an external thread disposed on the outer sidewall of the structural capacitor 2, and the second connection portion 11 is an internal thread disposed on the inner sidewall of the filter cavity 1. The structure capacitor 2 and the filter cavity 1 are fixedly connected through a thread structure, so that the structure capacitor 2 is stably contacted with the filter cavity 1, and the grounding reliability is ensured.

In the present embodiment, as shown in fig. 3 to 5, the structural capacitor 2 specifically includes the gas discharge tube 21 and the metal casing 22 disposed outside the gas discharge tube 21, and the first connecting portion 221 is disposed on the outer sidewall of the metal casing 22 of the structural capacitor 2.

The metal shell 22 is a hollow cylinder structure, and an accommodating cavity 222 for accommodating the gas discharge tube 21 is formed therein. The gas discharge tube 21 includes two opposite electrode terminals 211, wherein one electrode terminal 211 is welded to the bottom of the metal shell 22, and the other electrode terminal 211 extends out of the housing 222. After the metal shell 22 is accommodated in the filter cavity 1, the bottom wall of the metal shell 22 contacts with the bottom wall of the filter cavity 1. In addition, the bottom of the metal shell 22 is formed with a through hole 223 for receiving the electrode end 211 corresponding thereto, and the inner diameter of the through hole 223 is equal to or slightly larger than the outer diameter of the electrode end 211 of the gas discharge tube 21. In the present embodiment, the gas discharge tube 21 and the metal case 22 are welded and fixed together.

During installation, the gas discharge tube 21 and the metal shell 22 are welded and fixed together, and then the metal shell 22 is in threaded connection with the filter cavity 1, so that the structural capacitor 2 is fixed in the filter cavity 1, and the grounding reliability of the structural capacitor 2 is guaranteed.

The utility model discloses a wave filter 3, including above-mentioned structure electric capacity, the structure of structure electric capacity refers to the above-mentioned description, does not do here and gives unnecessary details.

The technical contents and features of the present invention have been disclosed as above, however, those skilled in the art can still make various substitutions and modifications based on the teaching and disclosure of the present invention without departing from the spirit of the present invention, therefore, the protection scope of the present invention should not be limited to the contents disclosed in the embodiments, but should include various substitutions and modifications without departing from the present invention, and should be covered by the claims of the present patent application.

Claims

1. The utility model provides a structure electric capacity, its characterized in that, structure electric capacity is acceptd in the filter cavity, be provided with first connecting portion on the lateral wall of structure electric capacity, be provided with on the inside wall of filter cavity with first connecting portion matched with second connecting portion, structure electric capacity passes through first connecting portion and second connecting portion and filter cavity fixed connection.

2. A structured capacitor according to claim 1, wherein said first and second connection portions are mating threaded connections.

3. A structural capacitor according to claim 1 or 2, wherein the first connecting portion is an external thread provided on an outer side wall of the structural capacitor, and the second connecting portion is an internal thread provided on an inner side wall of the filter cavity.

4. The structural capacitor of claim 1, comprising a gas discharge tube and a metal shell disposed outside the gas discharge tube, wherein the first connection portion is disposed on an outer sidewall of the metal shell.

5. A structural capacitor according to claim 4, wherein said metal case and said gas discharge tube are welded together.

6. The structural capacitor of claim 4, wherein the metal shell forms a containing cavity therein for containing a gas discharge tube, the gas discharge tube includes two opposite electrode terminals, one of the electrode terminals has an end welded to the bottom of the metal shell and the other end extending out of the containing cavity.

7. A structural capacitor according to claim 6, wherein the bottom of the metal case is formed with a through hole for receiving the electrode terminal of the gas discharge tube, and the through hole has an inner diameter equal to or slightly larger than the outer diameter of the electrode terminal of the gas discharge tube.

8. A filter comprising a structured capacitor as claimed in any one of claims 1 to 7.