A resonator and cavity welding fixture

Abstract

The utility model discloses a kind of welding tool of resonator and cavity, including bottom plate, pressing plate, elastic abutment component and hasp component;The upper end surface of bottom plate is provided with several positioning posts, resonator is inverted in positioning post, cavity is inverted on bottom plate, to make resonator be located in cavity;Several welding windows are arranged on pressing plate and positioning post is oppositely arranged;Elastic abutment component is installed in the lower end surface of pressing plate and is abutted with the bottom of cavity;Hasp component is connected between bottom plate and pressing plate, to limit the movement of pressing plate in vertical direction relative to bottom plate;By hasp component, bottom plate, resonator, cavity, pressing plate can be tightly and reliably fixed together, after tin paste melts, entire tool can make resonator and cavity keep the state of close fitting under the action of elastic abutment component, resonator and cavity do not appear loose in welding process, guarantee welding quality, it is favorable to promote the stability, consistency and production efficiency of cavity filter performance.

Description

Technical Field

[0001] This utility model relates to the field of cavity filter manufacturing equipment, and in particular to a welding fixture for a resonator and a cavity. Background Technology

[0002] A filter is a typical frequency selective device that effectively suppresses unwanted signals, preventing them from passing through the filter and allowing only useful signals to pass smoothly. Therefore, the performance of a filter directly affects the quality of the entire communication system, making it a crucial component in modern microwave and millimeter-wave communication systems. Cavity filters are a very important type of filter. Compared with other types of filters, they have advantages such as robust structure, stable and reliable performance, small size, moderate Q value, long high-end parasitic passband, and good heat dissipation. They can be used for higher power and frequencies. However, cavity filters are very sensitive to mechanical tolerances. Therefore, without separate performance testing and adjustment during the final assembly process, the designed electrical specifications cannot be achieved.

[0003] In existing cavity filters, the cavity and resonator are usually connected by pulsed laser welding and solder paste welding. However, the resonator is located in different positions within the cavity, so welding cannot be completed in one go due to the different welding angles and positions. This greatly reduces welding efficiency. Moreover, multiple welding operations can cause deformation of the sheet metal filter components under continuous high temperatures, thus affecting the performance of the cavity filter. Therefore, there is an urgent need for a welding fixture for resonators and cavities to solve the above problems. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a welding fixture for a resonator and a cavity.

[0005] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: a welding fixture for a resonator and a cavity, including a base plate, a pressure plate, an elastic abutment component and a buckle component; The upper surface of the base plate is provided with several positioning posts. The resonator is upside down on the positioning posts, and the cavity is upside down on the base plate so that the resonator is located inside the cavity. The elastic abutment component is installed on the lower end face of the pressure plate and abuts against the bottom of the cavity; The latch assembly connects the base plate and the pressure plate to restrict the vertical movement of the pressure plate relative to the base plate.

[0006] In one of the preferred embodiments of this utility model, the elastic abutment component is configured as a spring pin.

[0007] As one of the preferred embodiments of this utility model, the buckle assembly includes a first buckle and a second buckle. The bottom plate is provided with a first overlapping groove and a second overlapping groove on both sides, and the pressure plate is provided with a third overlapping groove and a fourth overlapping groove on both sides. The lower end of the first buckle is fastened into the first overlapping groove and the upper end is fastened into the third overlapping groove. The lower end of the second buckle is fastened into the second overlapping groove and the upper end is fastened into the fourth overlapping groove.

[0008] As one of the preferred embodiments of this utility model, a number of guide posts are provided on the base plate and a number of guide grooves are provided on the pressure plate. The guide posts can be inserted into the guide grooves when the pressure plate abuts against the bottom of the cavity.

[0009] As one of the preferred embodiments of this utility model, the guide column and the base plate are integrally formed.

[0010] As one of the preferred embodiments of this utility model, the positioning post is provided with a ventilation groove that runs vertically through it.

[0011] As one of the preferred embodiments of this utility model, a plurality of material reduction grooves are provided on the base plate and / or pressure plate.

[0012] As one of the preferred embodiments of this utility model, the positioning column and the base plate are integrally formed.

[0013] The beneficial effects of this utility model are as follows: A welding fixture for a resonator and a cavity includes a base plate, a pressure plate, an elastic abutment component, and a latching component. Several positioning posts are provided on the upper surface of the base plate. The resonator is inverted and placed on the positioning posts, and the cavity is inverted and placed on the base plate, so that the resonator is located inside the cavity. The elastic abutment component is installed on the lower surface of the pressure plate and abuts against the bottom of the cavity. The latching component connects the base plate and the pressure plate to restrict the vertical movement of the pressure plate relative to the base plate. The latching component ensures that the base plate, resonator, cavity, and pressure plate are tightly and reliably fixed together. After the solder paste melts, the entire fixture can maintain a tight fit between the resonator and the cavity under the action of the elastic abutment component. During the welding process, the resonator and cavity will not loosen, ensuring welding quality and improving the stability, consistency, and production efficiency of the cavity filter performance. Attached Figure Description

[0014] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of a welding fixture for a resonator and a cavity. Figure 2 This is an exploded view of a welding fixture for a resonator and its cavity. Detailed Implementation

[0015] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0016] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0017] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] In this utility model, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0019] Reference Figures 1-2 A welding fixture for a resonator and a cavity includes a base plate 10, a pressure plate 20, an elastic abutment assembly 30, and a snap fastener assembly 40. The upper end face of the base plate 10 is provided with several positioning posts 51. The resonator 61 is upside down on the positioning posts 51, and the cavity 62 is upside down on the base plate 10 so that the resonator 61 is located inside the cavity 62. The elastic abutment component 30 is installed on the lower end face of the pressure plate 20 and abuts against the bottom of the cavity 62; The latch assembly 40 is connected between the base plate 10 and the pressure plate 20 to restrict the vertical movement of the pressure plate 20 relative to the base plate 10.

[0020] In this utility model, the welding process between the resonator and the cavity is as follows: First, the base plate 10 is placed on the work station. Then, multiple resonators 61 with soldered bottoms are upside down and placed on the positioning posts 51 on the upper end face of the base plate 10. Next, the cavity 62 is upside down and placed on the upper end face of the base plate 10, so that the resonators 61 are located inside the cavity 62, and the bottom of the resonators 61 abuts against the inner bottom surface of the cavity 62. Then, the pressure plate 20 equipped with the elastic abutment component 30 is placed at the bottom of the cavity 62, so that the elastic abutment component 30 abuts against the bottom of the cavity 62. The elastic abutment component 30 is preferably set as a spring pin, which can adapt to the deformation and uneven size of the cavity 62 and the tooling, and ensure tight pressing. Then, the latch component 40 is installed between the base plate 10 and the pressure plate 20, and finally the welding process is carried out. After the welding is completed, the latch component 40 is removed and the pressure plate 20 is removed from the cavity 62.

[0021] Reference Figures 1-2 In some embodiments, the latch assembly 40 includes a first latch 41 and a second latch 42. The base plate 10 has a first overlapping groove 43 and a second overlapping groove 44 on both sides, and the pressure plate 20 has a third overlapping groove 45 and a fourth overlapping groove 46 on both sides. The lower end of the first latch 41 is fastened in the first overlapping groove 43 and the upper end is fastened in the third overlapping groove 45. The lower end of the second latch 42 is fastened in the second overlapping groove 44 and the upper end is fastened in the fourth overlapping groove 46. After the pressure plate 20 is placed on the cavity 62, the first latch 41 and the second latch 42 are fastened in the corresponding overlapping grooves from both sides of the base plate 10 and the pressure plate 20, respectively. The elastic abutment component 30 on the pressure plate 20 is used to keep the latch assembly 40 abutting against the base plate 10 and the pressure plate 20. This not only ensures that the cavity 62 and the resonator 61 are always tightly fitted, but also allows for easy assembly and disassembly, which is beneficial to improving production efficiency.

[0022] Reference Figures 1-2 In some embodiments, the base plate 10 is provided with a plurality of guide posts 71, and the pressure plate 20 is provided with a plurality of guide grooves 72. The guide posts 71 can be inserted into the guide grooves 72 when the pressure plate 20 abuts against the bottom of the cavity 62. Preferably, the guide posts 71 are integrally formed with the base plate 10. The cooperation between the guide posts 71 and the guide grooves 72 ensures good coaxiality between the pressure plate 20 and the base plate 10, avoiding lateral displacement that would affect welding accuracy and welding quality.

[0023] Reference Figures 1-2 In some embodiments, the positioning post 51 is provided with a through-hole venting groove 80. The venting groove 80 facilitates the evaporation of flux in the solder paste, reduces solder voids, and minimizes yellowing of the filter's inner cavity. More preferably, the positioning post 51 is integrally formed with the base plate 10. Reference Figures 1-2In some embodiments, the base plate 10 and / or pressure plate 20 are provided with a plurality of material reduction grooves 90, which can reduce the excess wall thickness of the tooling, increase the thermal conductivity of the tooling, and at the same time be used for the volatilization of flux in solder paste, reduce soldering voids, and reduce yellowing of the filter cavity.

[0024] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.

Claims

1. A welding fixture for a resonator and a cavity, characterized in that: Includes a base plate (10), a pressure plate (20), an elastic abutment component (30), and a snap fastener component (40); The upper surface of the base plate (10) is provided with a plurality of positioning posts (51), the resonator (61) is upside down on the positioning posts (51), and the cavity (62) is upside down on the base plate (10) so that the resonator (61) is located inside the cavity (62). The elastic abutment component (30) is installed on the lower end face of the pressure plate (20) and abuts against the bottom of the cavity (62); The latch assembly (40) is connected between the base plate (10) and the pressure plate (20) to restrict the vertical movement of the pressure plate (20) relative to the base plate (10).

2. The welding fixture for a resonator and a cavity according to claim 1, characterized in that: The elastic abutment component (30) is configured as a spring pin.

3. The welding fixture for a resonator and a cavity according to claim 1, characterized in that: The buckle assembly (40) includes a first buckle (41) and a second buckle (42). The base plate (10) is provided with a first overlapping groove (43) and a second overlapping groove (44) on both sides. The pressure plate (20) is provided with a third overlapping groove (45) and a fourth overlapping groove (46) on both sides. The lower end of the first buckle (41) is fastened in the first overlapping groove (43) and the upper end is fastened in the third overlapping groove (45). The lower end of the second buckle (42) is fastened in the second overlapping groove (44) and the upper end is fastened in the fourth overlapping groove (46).

4. The welding fixture for a resonator and a cavity according to claim 1, characterized in that: The base plate (10) is provided with a number of guide posts (71), and the pressure plate (20) is provided with a number of guide grooves (72). The guide posts (71) can be inserted into the guide grooves (72) when the pressure plate (20) abuts against the bottom of the cavity (62).

5. The welding fixture for a resonator and a cavity according to claim 1, characterized in that: The guide post (71) is integrally formed with the base plate (10).

6. The welding fixture for a resonator and a cavity according to claim 1, characterized in that: The positioning post (51) is provided with a through-hole ventilation groove (80).

7. The welding fixture for a resonator and a cavity according to claim 1, characterized in that: The base plate (10) and / or the pressure plate (20) are provided with a plurality of material reduction grooves (90).

8. The welding fixture for a resonator and a cavity according to claim 1, characterized in that: The positioning post (51) is integrally formed with the base plate (10).

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