CN211125956U - Filter - Google Patents
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- CN211125956U CN211125956U CN201922328378.5U CN201922328378U CN211125956U CN 211125956 U CN211125956 U CN 211125956U CN 201922328378 U CN201922328378 U CN 201922328378U CN 211125956 U CN211125956 U CN 211125956U
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Abstract
The utility model discloses a filter, including medium resonance pole and cavity, at least one of medium resonance pole and cavity is equipped with the tin cream coating, and the tin cream coating makes medium resonance pole and cavity fixed connection via passing stove welding back. Compared with the prior art that the dielectric resonance rod and the cavity are welded and fixed through the tin ring, the filter avoids using the tin ring, does not need to provide a structure for positioning the tin ring on the cavity, reduces the cost of the tin ring, and ensures that the structure of the cavity is simple; meanwhile, in the production process of the filter, the procedure of placing a tin ring is avoided; in addition, practical application shows that when the dielectric resonance rod and the cavity are welded and fixed through the solder paste coating, the dielectric resonance rod welding and the cover plate welding can be carried out through the furnace passing welding at the same time, namely, the welding and fixing of the dielectric resonance rod and the cavity and the welding and fixing of the cover plate and the cavity can be realized through the furnace passing welding process at one time, so that the process of furnace passing welding at one time is reduced, and the production efficiency is improved.
Description
Technical Field
The utility model relates to a frequency-selecting device technical field, more specifically say, relate to a wave filter.
Background
In mobile communication base station radio frequency devices, radio frequency structural members and the like, the filter has wide application.
Fig. 2 is a cross-sectional view of a conventional filter according to the prior art after assembling a dielectric resonator rod and a cavity before furnace welding. This conventional filter includes medium resonance pole 1 and cavity 2, when medium resonance pole 1 and cavity 2 welding, places tin ring 4 on cavity 2 earlier, is equipped with in the cavity 2 to be used for carrying out the location step of fixing a position tin ring 4, and medium resonance pole 1 is placed on this location step, and tin ring 4 cup joints with the peripheral part of this location step. After the tin ring 4 is positioned, the dielectric resonance rod 1 is arranged on the cavity 2 and is welded through a furnace.
It is known to pass through the oven again when the filter is welded to the cover plate. That is, in the production process of the filter, the tin ring needs to be placed in advance for one-time welding, and after the cover plate is placed, one-time welding is needed. Therefore, the furnace-passing welding needs to be performed twice, so that the production process is more, and the production efficiency is low.
In summary, it is an urgent need to solve the above-mentioned problems by those skilled in the art to provide a filter capable of reducing the number of processes and improving the production efficiency.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a filter, which has few processing steps and high production efficiency.
In order to achieve the above object, the present invention provides the following technical solutions:
a filter comprises a dielectric resonance rod and a cavity, wherein at least one of the dielectric resonance rod and the cavity is provided with a solder paste coating, and the solder paste coating is welded through a furnace to fixedly connect the dielectric resonance rod and the cavity.
Preferably, the dielectric resonance rod is provided with the solder paste coating.
Preferably, the solder paste coating completely covers a connection surface of the dielectric resonance rod for contacting with the cavity.
Preferably, the thickness of the solder paste coating is uniform.
Preferably, the thickness of the solder paste coating ranges from 0.1mm to 0.5 mm.
The utility model provides a wave filter, its medium resonance pole and cavity are via tin cream coating welded fastening.
Compared with the prior art, the tin ring is arranged between the dielectric resonance rod and the cavity, so that the dielectric resonance rod and the cavity are welded and fixed through the tin ring; meanwhile, in the production process of the filter, the procedure of placing a tin ring is avoided; in addition, practical application shows that when the dielectric resonance rod and the cavity are welded and fixed through the solder paste coating, the dielectric resonance rod welding and the cover plate welding can be carried out through the furnace passing welding at the same time, namely, the welding and fixing of the dielectric resonance rod and the cavity and the welding and fixing of the cover plate and the cavity can be realized through the furnace passing welding process at one time, so that the process of furnace passing welding at one time is reduced, and the production efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a cross-sectional view of a filter according to an embodiment of the present invention;
fig. 2 is a sectional view of a conventional filter according to the prior art after assembling a dielectric resonance rod and a cavity before furnace welding.
The reference numerals in fig. 1 and 2 are as follows:
1 is a dielectric resonance rod, 2 is a cavity, 3 is a solder paste coating and 4 is a solder ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The core of the utility model is to provide a filter, its manufacturing procedure is few, and production efficiency is high.
Please refer to fig. 1, which is a cross-sectional view of a filter according to an embodiment of the present invention.
The utility model provides a filter, including medium resonance pole 1 and cavity 2, at least one of medium resonance pole 1 and cavity 2 is equipped with tin cream coating 3, and tin cream coating 3 makes medium resonance pole 1 and cavity 2 fixed connection via crossing stove welding back.
That is to say, the utility model provides a filter, its dielectric resonance pole 1 and cavity 2 are via solder paste coating 3 welded fastening.
Compared with the prior art, the tin ring 4 is arranged between the medium resonance rod 1 and the cavity 2, so that the medium resonance rod 1 and the cavity 2 are welded and fixed through the tin ring 4, the filter provided by the utility model avoids the use of the tin ring 4, and does not need to arrange a structure for positioning the tin ring 4 on the cavity 2, thereby reducing the cost of the tin ring 4 and simplifying the structure of the cavity 2; meanwhile, in the production process of the filter, the procedure of placing the tin ring 4 is avoided; in addition, practical application shows that when the dielectric resonance rod 1 and the cavity 2 are welded and fixed through the solder paste coating 3, the dielectric resonance rod 1 and the cover plate can be welded and fixed through a furnace at the same time, namely, the welding and fixing of the dielectric resonance rod 1 and the cavity 2 and the welding and fixing of the cover plate and the cavity 2 can be realized through a furnace-passing welding process, so that the process of furnace-passing welding at one time is reduced, and the production efficiency is improved.
It should be noted that the solder paste coating 3 may be pre-coated on the dielectric resonance rod 1 and/or the cavity 2, and during assembly, the dielectric resonance rod 1 is directly mounted on the cavity 2, and then the cover plate is mounted on the whole machine, and the assembled filter is subjected to one-time furnace-through welding, so that the dielectric resonance rod 1 and the cover plate can be fixed.
It is understood that the solder paste 3 may be provided only on the dielectric resonant rod 1 or only on the cavity 2, and of course, the solder paste 3 may be provided on both the dielectric resonant rod 1 and the cavity 2.
When the solder paste 3 is simultaneously provided on the dielectric resonance bar 1 and the cavity 2, the thickness of the solder paste 3 is smaller than that of the solder paste provided only on the dielectric resonance bar 1 or the cavity 2.
Preferably, when the solder paste 3 is simultaneously disposed on the dielectric resonance bar 1 and the cavity 2, the solder paste 3 of the dielectric resonance bar 1 and the solder paste 3 of the cavity 2 have the same thickness.
Further, when the solder paste 3 is simultaneously disposed on the dielectric resonance bar 1 and the cavity 2, the thickness of the solder paste 3 of the dielectric resonance bar 1 and the thickness of the solder paste 3 on the cavity 2 are respectively half of the thickness of the solder paste 3 separately disposed on the dielectric resonance bar 1 or the cavity 2.
In view of the fact that the inner surface of the cavity 2 is generally uneven, the dielectric resonance rod 1 is provided with a solder paste coating 3 on the basis of the above-described embodiment in order to secure the reliability of the soldering of the dielectric resonance rod 1 and the cavity 2.
In order to further ensure the firmness and reliability of the welding of the dielectric resonance rod 1 and the cavity 2, on the basis of the above embodiment, the solder paste coating 3 completely covers the connection surface of the dielectric resonance rod 1 for contacting with the cavity 2.
On the basis of the above-described embodiments, it is preferable that the thickness of the solder paste coating 3 is uniform.
In order to avoid poor soldering, the thickness of the solder paste coating 3 is in the range of 0.1mm to 0.5mm in any of the above embodiments.
Preferably, the thickness of the solder paste coating 3 is 0.3 mm.
It can be understood that when the thickness of the solder paste coating 3 is too thin, it does not have a good connection effect on the dielectric resonance rod 1 and the cavity 2; when the thickness of the solder paste coating 3 is too thick, the gap between the connecting surfaces of the medium resonance rod 1 and the cavity 2 is too large, and in the welding process, the solder paste coating 3 is melted and flows, so that the gap between the medium resonance rod 1 and the cavity 2 is not filled, and poor welding is caused.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The filter provided by the present invention has been described in detail above. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (5)
1. A filter is characterized by comprising a dielectric resonance rod (1) and a cavity (2), wherein at least one of the dielectric resonance rod (1) and the cavity (2) is provided with a solder paste coating (3), and the dielectric resonance rod (1) is fixedly connected with the cavity (2) after the solder paste coating (3) is welded in a furnace.
2. A filter according to claim 1, characterized in that the dielectric resonator rod (1) is provided with the solder paste coating (3).
3. A filter according to claim 2, characterized in that the solder paste coating (3) completely covers the connection faces of the dielectric resonator rod (1) for contacting the cavity (2).
4. A filter according to claim 3, characterized in that the thickness of the solder paste coating (3) is uniform.
5. A filter according to any of claims 1-4, characterized in that the thickness of the solder paste coating (3) is comprised in the range of 0.1mm to 0.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922328378.5U CN211125956U (en) | 2019-12-20 | 2019-12-20 | Filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922328378.5U CN211125956U (en) | 2019-12-20 | 2019-12-20 | Filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211125956U true CN211125956U (en) | 2020-07-28 |
Family
ID=71706188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922328378.5U Active CN211125956U (en) | 2019-12-20 | 2019-12-20 | Filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211125956U (en) |
-
2019
- 2019-12-20 CN CN201922328378.5U patent/CN211125956U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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Address after: 233000 building 4, national financial incubation Industrial Park, 17 Yannan Road, high tech Zone, Bengbu City, Anhui Province Patentee after: Dafu Technology (Anhui) Co., Ltd Address before: 518000 the first, second and third floors of 101 and A4 in the third industrial zone A1, A2 and A3 of Shajing Industrial Company, Ho Xiang Road, Shajing street, Bao'an District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN TATFOOK TECHNOLOGY Co.,Ltd. |