A miniaturized circulator cavity

Abstract

The utility model discloses a miniaturized circulator cavity, including cavity and apron, the cavity includes bottom wall and the side wall of the bottom wall and the extension to the upside of bottom wall, the side wall and bottom wall jointly enclose the inner chamber, the side wall is opened with a plurality of notches from top to bottom, the upper end of side wall is provided with a plurality of clamping grooves, the apron includes the flat plate main part and a plurality of elastic clamping arms that extend outward from the flat plate main part, the middle of receiving groove is provided with the locating shaft that extends upwards, the flat plate main part is provided with the locating block that extends outward between the position of oppositely arranged elastic clamping arm, the locating block is provided with the locating groove corresponding locating shaft, the side of locating block close elastic clamping arm forms the limiting end of elastic clamping arm, through the accurate guide structure of locating shaft and locating groove, the limiting protection of locating block to elastic clamping arm and the tool adaptation design of work hole, have improved the assembly accuracy, structural stability and dismounting convenience of miniaturization circulator significantly.

Description

Technical Field

[0001] This utility model relates to the field of circulator technology, and in particular to a miniaturized circulator cavity. Background Technology

[0002] Circulators, as key components for unidirectional transmission of microwave signals, are widely used in radar, communication base stations, and satellite systems. Traditional circulator cavities are mostly fixed to the cover plate and cavity using bolted or welded connections. While this ensures structural stability, it suffers from low assembly efficiency, large size, and difficulty in maintenance. Especially in the context of the rapid development of 5G communication and the Internet of Things, it cannot meet the demands for miniaturization, high integration, and rapid disassembly and maintenance.

[0003] To address the aforementioned issues, some improvements have been proposed in the prior art. For example, patent application CN111162359A proposes an elastic clamp arm connection structure, which achieves a detachable connection between the cover plate and the cavity through the cooperation of the elastic clamp arm and the slot, significantly improving assembly efficiency and reducing volume. This solution sets the elastic clamp arms in pairs close together as a cantilever structure and bends and extends in opposite directions, using the clamping force generated by elastic deformation to fix the cover plate, avoiding the cumbersome operation of traditional bolt connections. At the same time, the space utilization is optimized through the receiving groove structure, realizing the miniaturization design of the circulator. However, the prior art still has the following shortcomings in practical applications: (1) The cover plate and the cavity lack positioning parts during assembly, and even a small deviation between the elastic clamp arm and the slot may lead to clamping failure or clamp arm deformation; (2) When assembling the cover plate and the cavity, it only relies on the deformation guidance of the elastic clamp arm and lacks a rigid positioning structure, which makes the cover plate prone to lateral displacement; (3) When disassembling, the elastic clamp arm needs to be pried directly, and if pried too much, the elastic clamp arm is easily damaged. Utility Model Content

[0004] Purpose of the invention: The purpose of this utility model is to provide a miniaturized circulator cavity. Through the precise guiding structure of the positioning shaft and positioning groove, the limiting protection of the elastic clamping arm by the positioning block, and the tool adaptation design of the working hole, the assembly accuracy, structural stability and disassembly convenience of the miniaturized circulator are significantly improved.

[0005] Technical solution:

[0006] A miniaturized annular cavity includes a cavity and a cover plate. The cavity includes a bottom wall and side walls that surround the bottom wall and extend upward from it. The side walls and the bottom wall together form an inner cavity. The side walls have multiple notches from top to bottom and multiple slots at their upper ends. The cover plate includes a flat plate body and multiple elastic locking arms extending outward from the flat plate body. When the cover plate is closed on the cavity, each elastic locking arm engages with its corresponding slot to fix the cover plate to the cavity. The elastic locking arms are arranged in pairs close together in a cantilever structure and bend and extend in a distancing direction. A receiving groove is provided at the upper end of the side wall, which receives a pair of elastic locking arms. A positioning shaft extends upward from the middle of the receiving groove. A positioning block extends outward from the flat plate body between the oppositely arranged elastic locking arms. The positioning block has a positioning groove corresponding to the positioning shaft. The side of the positioning block near the elastic locking arm forms a limiting end for the elastic locking arm.

[0007] Furthermore, the receiving groove includes two side walls and a bottom wall, the side walls are provided with locking blocks, the locking blocks and the bottom wall form a locking groove, and the positioning shaft is located in the middle of the receiving groove.

[0008] Furthermore, when the elastic clamping arm is inserted into the slot, a portion of the elastic clamping arm is located at the outer end of the slot. The elastic clamping arm is provided with a working hole that facilitates gripping by tweezers. The working hole is located at the outer end of the slot when the elastic clamping arm is inserted into the slot.

[0009] Furthermore, when the elastic arm is engaged in the slot, at least the front end of the elastic arm is located outside the slot, and the working hole is provided at the front end of the elastic arm.

[0010] Furthermore, the limiting end of the positioning block and the side of the elastic locking arm near the limiting end of the positioning block are parallel to each other, forming surface contact during positioning.

[0011] Furthermore, when the elastic locking arm is engaged in the slot, the distance from the elastic locking arm to the limiting end of the positioning block is greater than the depth to which the elastic locking arm is engaged in the slot.

[0012] Furthermore, the diameter of the upper end of the positioning shaft gradually decreases from bottom to top.

[0013] Furthermore, the height of the positioning shaft is equal to the thickness of the cover plate, the depth of the positioning groove, and the thickness of the positioning block, and the elastic locking arm is located below the side end of the flat plate body.

[0014] Beneficial effects: Through the precise guiding structure of the positioning shaft and positioning groove, the limiting protection of the elastic clamping arm by the positioning block, and the tool adaptation design of the working hole, the assembly accuracy, structural stability and disassembly convenience of the miniaturized ring are significantly improved. Attached Figure Description

[0015] Figure 1 This is an assembly perspective view of this utility model;

[0016] Figure 2 This is a perspective view of the cavity in Embodiment 1 of this utility model;

[0017] Figure 3 This is a three-dimensional cover plate of the present invention. Figure 1 ;

[0018] Figure 4 This is a three-dimensional cover plate of the present invention. Figure 2 ;

[0019] Figure 5 This is a perspective view of the cavity in Embodiment 2 of this utility model. Detailed Implementation

[0020] To make the technical solution of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Example 1

[0022] like Figure 1-4 As shown, a miniaturized annular cavity includes a cavity 1 and a cover plate 2. The cavity 1 includes a bottom wall 11 and a side wall 12 surrounding the bottom wall 11 and extending upward from it. The side wall 12 and the bottom wall 11 together form an inner cavity. The side wall 12 has multiple notches from top to bottom, and multiple slots 13 are provided at the upper end of the side wall 12. The cover plate 2 includes a flat plate body 21 and multiple elastic locking arms 22 extending outward from the flat plate body. When the cover plate 2 is closed on the cavity 1, each elastic locking arm 22 engages with the corresponding slot 13 to fix the cover plate 2 to the cavity. 1. The elastic locking arms 22 are arranged in pairs close together in a cantilever structure and bend and extend in opposite directions. A receiving groove 14 is provided at the upper end of the side wall 12, which receives a pair of elastic locking arms 22. A positioning shaft 15 extends upward from the middle of the receiving groove 14. A positioning block 23 extends outward from the position between the oppositely arranged elastic locking arms 22 on the flat plate body 21. The positioning block 23 is provided with a positioning groove 24 corresponding to the positioning shaft 15. The side of the positioning block 23 near the elastic locking arms 22 forms a limiting end for the elastic locking arms 22. The pre-positioning of the cover plate 2 and the cavity 1 is achieved through the concave-convex cooperation of the positioning shaft 15 and the positioning groove 24. The elastic locking arms 22 are fixed by engaging with the locking groove 13 using the elastic deformation of the cantilever structure. The limiting end of the positioning block 23 limits the maximum deformation of the elastic locking arms 22 through mechanical blocking. The cooperation between the positioning shaft and the positioning groove provides precise guidance and rigid horizontal positioning for assembly. The engagement of the elastic locking arm and the locking groove enables detachable fixing, and the positioning block limit end prevents excessive deformation of the locking arm.

[0023] Furthermore, the receiving groove 14 includes two side walls and a bottom wall. The side walls are provided with locking blocks 16, forming a groove 13 between the locking blocks 16 and the bottom wall. The positioning shaft 15 is positioned in the middle of the receiving groove 14. The receiving groove 14 forms a space to accommodate the elastic locking arm 22 through the side walls and bottom wall. The height difference between the locking blocks 16 and the bottom wall forms the groove 13, providing an engagement point for the elastic locking arm. The positioning shaft 15 being located in the middle ensures the symmetry of the positioning.

[0024] Furthermore, when the elastic clamping arm 22 is engaged in the slot 13, a portion of the elastic clamping arm 22 is located at the outer end of the slot. The elastic clamping arm 22 is provided with a working hole 25 for easy gripping with tweezers. The working hole 25 is positioned at the outer end of the slot when the elastic clamping arm 22 is engaged in the slot 13. The portion of the elastic clamping arm exposed in the slot provides operating space for the working hole 25. Through the insertion and gripping of a tool (such as tweezers), a force pointing towards the center can be applied to the clamping arm through the working hole, causing the clamping arm to elastically deform and disengage from the slot. The exposed portion provides a fulcrum for the tool, and the working hole ensures that the tool does not slip during gripping, achieving precise force application. Compared to a structure without a working hole, the tool slippage rate during disassembly is reduced from 30% to 5%, significantly improving maintenance convenience.

[0025] Furthermore, when the elastic locking arm 22 is engaged in the slot, at least the front end of the elastic locking arm 22 is located outside the slot, and the working hole 25 is provided at the front end of the elastic locking arm 22. The front end is far from the connection point between the locking arm and the cover plate and is the most sensitive area to deformation. Providing a working hole at this location allows for the overall deformation of the locking arm with a relatively small force.

[0026] Furthermore, the limiting end of the positioning block 23 is parallel to the side of the elastic clamping arm 22 near the limiting end of the positioning block, forming surface contact during positioning. The parallel surface contact results in a larger stress distribution when the clamping arm is under force.

[0027] Furthermore, when the elastic locking arm 22 is inserted into the slot 13, the distance between the elastic locking arm 22 and the limiting end of the positioning block 23 is greater than the depth of the elastic locking arm 22 inserted into the slot 13.

[0028] Furthermore, the height of the positioning shaft 15 is equal to the thickness of the cover plate, the depth of the positioning groove, and the thickness of the positioning block, and the elastic locking arm 22 is located below the side end of the flat plate body 21.

[0029] Furthermore, the top of the elastic locking arm 22 and the top of the locking block can be provided to form mutually matching wedge-shaped surfaces for easy locking.

[0030] Example 2

[0031] like Figure 5As shown, the upper diameter of the positioning shaft 15 gradually decreases from bottom to top. The tapered structure utilizes a beveled guide. When there is a slight alignment deviation between the cover plate 2 and the cavity 1, the upper end of the positioning shaft 15 can automatically correct the deviation through the sliding of the beveled surface, guiding the positioning shaft to accurately insert into the positioning groove, reducing the alignment accuracy requirements during assembly and reducing the difficulty of manual operation.

[0032] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A miniaturized annular cavity, comprising a cavity (1) and a cover plate (2), wherein the cavity (1) comprises a bottom wall (11) and a side wall (12) surrounding the bottom wall (11) and extending upward therefrom, the side wall (12) and the bottom wall (11) together forming an inner cavity, the side wall (12) having a plurality of notches formed from top to bottom, and the upper end of the side wall (12) having a plurality of slots (13), and the cover plate (2) comprising a flat plate body (21) and a plate body. Multiple elastic locking arms (22) extending outward from the main body; when the cover plate (2) is closed on the cavity (1), each elastic locking arm (22) engages with a corresponding locking groove (13) to fix the cover plate (2) to the cavity (1). The elastic locking arms (22) are arranged in pairs close together as a cantilever structure and bend and extend in opposite directions. A receiving groove (14) is provided at the upper end of the side wall (12), and the receiving groove (14) receives a pair of elastic locking arms (22). The feature is that... A positioning shaft (15) extends upward from the middle of the receiving groove (14). A positioning block (23) extends outward from the plate body (21) between the oppositely arranged elastic clamping arms (22). The positioning block (23) is provided with a positioning groove (24) corresponding to the positioning shaft (15). The side of the positioning block (23) near the elastic clamping arm (22) forms a limiting end for the elastic clamping arm (22).

2. The miniaturized annular cavity according to claim 1, characterized in that, The receiving groove (14) includes two side walls and a bottom wall. The side walls are provided with locking blocks (16), and the locking blocks (16) and the bottom wall form a locking groove (13). The positioning shaft (15) is located in the middle of the receiving groove (14).

3. The miniaturized annular cavity according to claim 1, characterized in that, When the elastic arm (22) is inserted into the slot (13), part of the elastic arm (22) is located at the outer end of the slot. The elastic arm (22) is provided with a working hole (25) for easy gripping by tweezers. The working hole (25) is located at the outer end of the slot when the elastic arm (22) is inserted into the slot (13).

4. A miniaturized annular cavity according to claim 3, characterized in that, When the elastic arm (22) is inserted into the slot, at least the front end of the elastic arm (22) is located outside the slot, and the working hole (25) is provided at the front end of the elastic arm (22).

5. A miniaturized annular cavity according to claim 1, characterized in that, The limiting end of the positioning block (23) is parallel to the side of the elastic arm (22) near the limiting end of the positioning block, and forms surface contact when limiting.

6. A miniaturized annular cavity according to claim 1, characterized in that, When the elastic arm (22) is inserted into the slot (13), the distance from the elastic arm (22) to the limiting end of the positioning block (23) is greater than the depth of the elastic arm (22) inserted into the slot (13).

7. A miniaturized annular cavity according to claim 1, characterized in that, The diameter of the upper end of the positioning shaft gradually decreases from bottom to top.

8. A miniaturized annular cavity according to claim 1, characterized in that, The height of the positioning shaft (15) is equal to the thickness of the cover plate, the depth of the positioning groove, and the thickness of the positioning block. The elastic clamping arm (22) is located below the side end of the flat plate body (21).

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