Circulator / isolator cavity assembly and manufacturing method thereof

Abstract

The invention discloses a circulator / isolator cavity assembly and a manufacturing method thereof. The circulator / isolator comprises a metal shell, a metal cover plate and an internal element. The internal element is accommodated in the metal shell, and the metal cover plate covers the metal shell so as to package the internal element. The metal shell is provided with a peripheral wall, the peripheral wall is provided with a connecting block which is upwards embedded into the edge of the metal cover plate, and the connecting block and the edge of the metal cover plate are riveted through riveting force parallel to the plane where the metal cover plate is located. The riveting force is parallel to the metal cover plate and acts on the edge of the metal cover plate, so that internal elements are prevented from being damaged by the riveting force.

Description

[Technical field]

[0001] The present application relates to components of wireless communication equipment, and more particularly to a circulator / isolator assembly. [Background technology]

[0002] In the existing wireless communication system, the transmitter is an important component, which consists of a power amplifier (PA), a coupler, a circulator, a connector, a duplexer and an antenna. The coupler is used for the relevant monitoring functions of the link, the circulator is used to protect the power amplifier tube, and the connector transmits the output signal to the duplexer. In the wireless field, the design is similar, but with the development of wireless communication, the requirements for miniaturization are getting higher and higher. As an anisotropic element, the circulator plays a very important role in the field of microwave and radio frequency communications. Through its unidirectional transmission characteristics, it can protect the components in the circuit from damage by useless signals, and can also enable the same circuit to achieve the duplex function of sending and receiving signals.

[0003] In the prior art, a riveted microwave isolator shell structure is installed on a mainboard of a communication device, and includes a shell for accommodating a microwave isolation component and a cover for encapsulating the microwave isolation component in the shell. The shell includes a bottom wall and a side wall surrounding the bottom wall and extending toward the upper side of the bottom wall. The side wall and the bottom wall together form a cavity. The side wall is provided with a plurality of notches from top to bottom. The microwave isolation component has a plurality of connecting pins for connecting to the mainboard of the communication device. When the microwave isolation component is installed in the cavity from top to bottom, the connecting pins are exposed from the corresponding notches. An interference-fit fixing structure is provided between the side wall and the cover. The fixing structure includes a recess formed downward from the upper part of the side wall and an outward protrusion formed at the edge of the cover. The recess and the protrusion are meshed with each other and riveted to fix, thereby connecting the cover and the side wall together.

[0004] Circulators are commonly used components in the communications industry. The components are composed of multiple sheets of different thicknesses. These sheets are wrapped by a cavity and pressed by a cover. The circulator can only work stably when the sheets are subjected to stable pressure and contact in the vertical direction. As the design of circulator products becomes smaller and smaller, the assembly riveting structure design of circulators has roughly formed two schemes: vertical stamping riveting scheme and bending riveting scheme.

[0005] The punching and riveting scheme, as disclosed in the utility model patent announcement CN214797672U and the utility model patent announcement CN214797675U, is to design the rivet column on the cavity, design the rivet hole on the cover sheet, put the sheet into the cavity, cover the cover sheet, insert the rivet column into the rivet hole, and punch it with a press to complete the assembly. During assembly, the rivet column must be aligned with the rivet hole, and multiple rivet points are often designed, so the centering accuracy during assembly and riveting is required to be high. Because the riveting pressure of this scheme is downward, there are many components stacked inside, and the height error of the formed cover plate is large. It is difficult to control the forming stroke of the riveting punch, and it is easy for the riveting punch to drive the cover sheet to move downward excessively, thereby crushing some internal components. In addition, because the vertical punching and riveting will cause the cavity rivet column to extend and deform, damaging the outer surface coating of the cavity, causing the cavity to rust easily.

[0006] The bending riveting scheme, as disclosed in the invention patent CN111682295A and the utility model patent announcement CN208522068U, is to leave a bendable column on the cavity, design the cover sheet to be placed inside the cavity, first put the sheet material and the cover sheet into the cavity, and when the internal sheet material and the cover sheet of the product are stacked inside the cavity, use the inclined punch surface, and when the punch is punched vertically downward, the punch generates an inclined downward bending force on the column, thereby forming a bend in the column, and the bent column buckles the cover sheet downward, thereby fixing the position of the cover sheet. Like the vertical stamping riveting scheme, it is also difficult to control the height of the bend, and it is easy for the riveting pressure to act on the cover sheet and crush some internal components. In addition, because the bending punch in the vertical direction will scratch the side wall of the cavity, damage the outer surface coating of the cavity, and cause the cavity to rust easily.

[0007] In addition, the two riveting schemes mentioned above both have downward riveting pressure, which more or less causes the cavity height to become shorter and the diameter to become larger, resulting in changes in the cavity size, which in turn causes changes in the relative positions of the components in the cavity, making the various electrical properties of the circulator / isolator before and after riveting packaging very different. This is also a problem that everyone in the industry hopes to solve. [Summary of the invention]

[0008] The technical problem to be solved by the present application is to provide a circulator / isolator assembly and a manufacturing method thereof, wherein the internal component damage rate is low and, compared with the existing riveting method, the shell outer dimensions generated during the riveting process can be reduced.

[0009] In order to solve the above technical problems, this application is implemented through the following technical solutions:

[0010] A circulator / isolator chamber assembly, comprising a metal shell, a metal cover plate and internal elements, wherein the metal shell comprises a bottom plate and a peripheral wall extending upward from the periphery of the bottom plate, the metal cover plate is covered on the metal shell to form a receiving chamber surrounded by the bottom plate, the peripheral wall and the metal cover plate, the receiving chamber is used to receive the internal elements, the peripheral wall extends upward to form a connecting block, the connecting block is embedded in the edge of the metal cover plate, the edge of the metal cover plate is riveted to the peripheral wall of the metal shell, the riveting is arranged between the connecting block and the edge of the metal cover plate, and is formed by a riveting pressure parallel to the plane where the metal cover plate is located. Because the riveting pressure is parallel to the metal cover plate and acts on the edge of the metal cover plate, the riveting pressure is prevented from acting in a direction perpendicular to the metal cover plate and damaging the internal elements.

[0011] As a further design, the surface of the metal shell is provided with a coating, the metal cover plate includes a plate body and a fixed arm connected to the plate body, a slot is formed between the fixed arm and the plate body, after the metal cover plate is covered on the metal shell, the connecting block is inserted into the slot from bottom to top, after the riveting is completed, the fixed arm is plastically deformed into the slot, thereby clamping the connecting block to form the riveting. Such a structure allows the riveting punch to act directly on the metal cover plate instead of on the metal shell, preventing damage to the coating provided on the metal shell.

[0012] As a further design, the slot is a through hole that penetrates from top to bottom, the fixed arm continuously extends to connect the opposite sides of the slot, and both ends are connected to the plate body, and the plastic deformation causes the middle of the fixed arm to move into the slot. With this structure, the force of the fixed arm clamping the connection block is increased.

[0013] As a further design, the fixed arm includes a cantilever connected to the plate body at one end, the end of the cantilever extends on one side of the slot to form a wrapping end, the plastic deformation causes the cantilever and the wrapping end to move inwardly toward the slot, and the fixed arm also includes another cantilever, the end of the other cantilever extends on the other side opposite to the slot to form another wrapping end, the plastic deformation causes the other cantilever and the other wrapping end to move inwardly toward the slot, and the two wrapping ends at least partially wrap around the outside of the connection block. Such a cantilever structure can reduce the required riveting pressure, and in addition, the wrapping end can fix the connection block from more directions.

[0014] As a further design, the cross-section of the connecting block in the horizontal direction is roughly rectangular, and has an outer surface of the connecting block parallel to the outer surface of the peripheral wall and a vertical mating surface perpendicular to the outer surface of the connecting block. An inclined mating surface is connected between the vertical mating surface and the outer surface of the connecting block. The vertical mating surface and the inclined mating surface are inclined in the up-down direction, so that the connecting block is in the shape of an inverted cone with a larger top and a smaller bottom. The metal cover plate is provided with an opening of a certain depth at a certain distance from the slot, and the opening has a riveting surface arranged roughly parallel to the vertical mating surface. After riveting, the cantilever abuts against the vertical mating surface, and the wrapped end abuts against the inclined mating surface. In addition, the connecting block has a vertical symmetry plane, and the metal cover plate and the metal shell are provided with another vertical mating surface, another inclined mating surface and another riveting surface symmetrical about the symmetry plane, so that the riveting jig can symmetrically apply force to rivet. The upper and lower inverted cone design of the connecting block can further prevent the metal cover plate from detaching upward from the metal shell.

[0015] As a further design, the fixed arm includes a cantilever connected to the plate body at one end, and the cross-section of the connecting block in the horizontal direction is set to an isosceles trapezoid, the outer surface of the trapezoid is shorter and the inner surface is longer, so that the two sides of the connecting block corresponding to the waist of the trapezoid can form inclined surfaces, and when the cantilever rests against the corresponding inclined surface of the waist of the trapezoid, an inward force is generated to prevent the surrounding wall from opening outward.

[0016] As a further design, the wrapping end is provided with a riveting force point on the side away from the connecting block, so that the wrapping end forms plastic deformation relative to other parts of the cantilever, so that the wrapping end clamps the connecting block. The wrapping end can wrap the connecting block with a small deformation to achieve the riveting.

[0017] As a further design, the connection block forms a mating surface on the side facing the fixed arm, and the connection block is pressed so that the mating surface forms an upper portion and a lower portion aligned vertically at least partially, the upper portion convexly protrudes toward the fixed arm, the lower portion is concave inwardly, and the riveting site is at least partially aligned with the lower portion of the connection block along the riveting force direction. The convex-upper and concave-lower structure of the connection block facilitates preventing the metal cover from loosening after riveting.

[0018] As a further design, the upper portion and the lower portion of the matching surface are connected by an inclined surface.

[0019] As a further design, the lower portion is a countersunk hole or a through hole arranged on the connecting block.

[0020] As a further design, the lower portion is arranged on opposite sides of the connecting block in the horizontal direction, and forms a through groove that penetrates the connecting block in a direction perpendicular to the peripheral wall.

[0021] As a further design, the connection block forms a mating surface on the side facing the fixed arm, and the mating surface is pressed to form a corrugated surface. The corrugated surface structure of the connection block is convenient for preventing the metal cover plate from loosening after riveting.

[0022] In order to solve the above technical problems, this application is implemented through the following technical solutions:

[0023] A method for manufacturing a circulator / isolator chamber assembly includes the following steps: A. providing a metal shell, a metal cover plate and an internal element, wherein the metal shell includes a bottom plate and a peripheral wall extending upward from the periphery of the bottom plate, wherein a connecting block extends upward from the peripheral wall, and a coating is provided on the surface of the metal shell; B. installing the internal element into the metal shell; C. covering the metal cover plate on the metal shell, wherein the connecting block is embedded in the edge of the metal cover plate, and the internal element is accommodated in a housing cavity surrounded by the bottom plate, the peripheral wall and the metal cover plate; D. applying a riveting pressure parallel to the plane where the metal cover plate is located to the side of the metal cover plate, so that a riveted connection is formed between the connecting block and the metal cover plate. The riveting pressure is parallel to the plane where the metal cover plate is located, and will not act on the internal element, so as to prevent the internal element from being crushed; the riveting pressure acts on the side of the metal cover plate, but not on the metal shell, so as to prevent the coating from being damaged.

[0024] As a further design, in step A, the metal cover plate includes a plate body and a fixed arm connected to the plate body, and a slot is formed between the fixed arm and the plate body, so that after step C, the connecting block is inserted into the slot from bottom to top, and after step D, the fixed arm undergoes plastic deformation into the slot, thereby clamping the connecting block to form the riveting.

[0025] As a further design, in step A, the connecting block forms a mating surface on the side facing the fixed arm, and the connecting block is pressed so that the mating surface forms an upper part and a lower part that are aligned vertically at least in a local position, the upper part protrudes toward the fixed arm, and the lower part is concave inward. In step D, the riveting action site is at least partially aligned with the lower part of the connecting block along the direction of the riveting force, and force is applied perpendicular to the mating surface.

Brief Description of the Drawings

[0026] Figure 1 It is a three-dimensional exploded view of the circulator / isolator chamber assembly of the first embodiment of the present application (before riveting and pressing, and the internal components are not shown);

[0027] Figure 2 yes Figure 1 3D assembly diagram of the middle circulator / isolator chamber assembly (before riveting);

[0028] Figure 3 yes Figure 2 3D assembly diagram of the middle circulator / isolator chamber assembly (after riveting);

[0029] Figure 4 yes Figure 3 A top view of the mid-circulator / isolator chamber assembly;

[0030] Figure 5 yes Figure 4 A cross-sectional view of the circulator / isolator chamber assembly along the AA direction;

[0031] Figure 6 It is a three-dimensional exploded view of the circulator / isolator chamber assembly of the second embodiment of the present application (before riveting and pressing, and the internal components are not shown);

[0032] Figure 7 yes Figure 6 3D assembly diagram of the middle circulator / isolator chamber assembly (after riveting);

[0033] Figure 8 This is a three-dimensional exploded view of the circulator / isolator chamber assembly of the third embodiment of the present application (before riveting and pressing, and the internal components are not shown);

[0034] Fig. 9 yes Figure 8 3D assembly diagram of the middle circulator / isolator chamber assembly (after riveting);

[0035] Fig.10 It is a three-dimensional exploded view of the circulator / isolator chamber assembly of the fourth embodiment of the present application (before riveting and pressing, and the internal components are not shown);

[0036] Fig.11 yes Fig.10 3D assembly diagram of the middle circulator / isolator chamber assembly (after riveting);

[0037] Fig.12 This is a three-dimensional exploded view of the circulator / isolator chamber assembly of the fifth embodiment of the present application (before riveting and pressing, and the internal components are not shown);

[0038] Fig.13 yes Fig.12 3D assembly diagram of the middle circulator / isolator chamber assembly (after riveting);

[0039] Fig.14 It is a three-dimensional exploded view of the circulator / isolator chamber assembly of the sixth embodiment of the present application (before riveting and pressing, and the internal components are not shown);

[0040] Fig.15 yes Fig.143D assembly diagram of the middle circulator / isolator chamber assembly (after riveting);

[0041] Fig.16 yes Fig.15 A partial enlarged view of the location indicated by the circle in the middle. [Specific implementation method]

[0042] Please refer to Figures 1 to 5 The circulator / isolator chamber assembly 100 of the first embodiment of the present application is shown, which includes a metal shell 10, a metal cover plate 15 and internal components (not shown). The metal shell 10 is provided with a coating on its surface, and includes a bottom plate 11 and a peripheral wall 12 extending upward from the periphery of the bottom plate 11 to form three sections separated from each other. The metal cover plate cover 15 is a flat plate structure, and is provided with a plate body 150, a fixed arm 152 connected to the plate body 150, and a slot 154 between the plate body 150 and the fixed arm, and the slot 154 passes through the metal cover plate 15 from top to bottom. The metal cover plate 15 is covered on the metal shell 10 to form a housing cavity (not numbered) surrounded by the bottom plate 11, the peripheral wall 12 and the metal cover plate 15, and the housing cavity is used to accommodate the internal components. The peripheral wall 12 extends upward to form a connecting block 13, and the connecting block 13 is inserted into the slot 154, so that the peripheral wall 12 is embedded in the edge of the metal cover plate 15.

[0043] The fixing arm 152 is acted on its outer surface 160 vertically, so that the fixing arm 152 is riveted inwardly, thereby clamping the connecting block 13 and realizing the riveting between the peripheral wall 12 and the metal cover plate 15. In addition, the riveting pressure of the riveting is parallel to the plane where the metal cover plate 15 is located, and a riveting pit 156 is formed on the outer surface of the fixing arm 152. Because the riveting pressure is parallel to the metal cover plate 15, it can be avoided that the riveting pressure acts in a direction perpendicular to the metal cover plate 15, so that it is transmitted to the internal components by the metal cover plate 15, thereby damaging the internal components. In addition, the riveting pressure acts on the outer side surface 160 of the fixing arm 152, so that the riveting pressure is prevented from acting on the metal shell 10, thereby avoiding damaging the plating on the metal shell 10.

[0044] In addition, the fixing arm 152 continuously extends to connect the opposite sides of the slot 154, and both ends thereof are connected to the plate body 150. The plastic deformation causes the middle of the fixing arm 152 to move into the slot 154, thereby forming a firm clamping effect. The connection structure at both ends of the fixing arm 152 increases the force of the fixing arm 152 to clamp the connection block 13. The outer side of the connection block 13 forms a mating surface 130, which includes an upper portion 132 protruding outward and a lower portion 134 recessed inward. The lower portion 134 is an inclined surface formed by pier pressing, so as to prevent the metal cover plate 15 from loosening upward after riveting.

[0045] The manufacturing method of the circulator / isolator cavity assembly 100 in the first embodiment of the present application includes the following steps: A. providing the aforementioned metal shell 10, the aforementioned metal cover plate 15 and the aforementioned internal components; B. installing the internal components into the metal shell 10; C. covering the metal cover plate 15 on the metal shell 10, and accommodating the internal components in the accommodating cavity; D. applying a riveting pressure parallel to the plane where the metal cover plate 15 is located on the side of the metal cover plate 15, so that a riveted connection is formed between the connecting block 13 and the metal cover plate 15.

[0046] As an extension of the first embodiment, the mating surface 130 can prevent the metal cover plate 15 from loosening upwards as long as the upper portion bulges outwards and the lower portion is recessed inwards at a local position, and the upper portion and the lower portion have a tendency to act downwards on the metal cover plate 15. A better way is to align the upper portion and the lower portion in the vertical direction. Figures 6 to 16 , respectively disclose the second to sixth embodiments of this concept, which will be further described below.

[0047] like Figure 6 and Figure 7 , revealing a second embodiment of the present application, which differs from the first embodiment in that the lower portion is arranged as a circular recessed hole 234 located in the middle of the connecting block. In addition, the recessed hole 234 can be a through hole or a countersunk hole, so that during the riveting process, the cover fixing arm plastically deforms into the hole, thereby jamming the connecting block, which can also prevent the metal cover from loosening upwards.

[0048] like Figure 8 and Fig. 9 , revealing the third embodiment of the present application, which is different from the first embodiment in that the lower part is arranged on opposite sides of the connecting block in the horizontal direction, and forms a through groove 334 that penetrates the connecting block in a direction perpendicular to the peripheral wall, and the through groove 334 is equivalent to the concave lower part, and the upper side of the through groove 334 forms a lug 332, and the lug 332 is equivalent to the upper part protruding outward.

[0049] like Fig.10 and Fig.11 , revealing the fourth embodiment of the present application, which is different from the first embodiment in that the upper and lower parts are arranged as a folded surface 430 formed by the connecting block being pressed on the side facing the fixed arm, the tiny protrusion is equivalent to an upper part, and the tiny groove on the lower side adjacent to the tiny protrusion is equivalent to a lower part.

[0050] like Fig.12 and Fig.13, discloses a fifth embodiment of the present application, which is mainly different from the first embodiment in that the outer side surface of the connecting block 53 is pressed to form a mating surface 530 that is concave relative to the outer side surface of the peripheral wall 52, and the mating surface 530 of the connecting block 53 and the outer side surface of the peripheral wall 52 form a concave shape (not numbered). The mating surface 530 has an upper portion 532 and a lower portion 534 similar to those of the first embodiment. The concave shape is used to accommodate the fixing arm 552, so that the outer side surface of the fixing arm 552 does not exceed the outer side surface of the peripheral wall 52.

[0051] like Figures 14 to 16 , the sixth embodiment of the present application is disclosed, which is different from the first embodiment in the following points, which are described in detail below. First, the connecting block 63 is provided with an inclined mating surface 632 connected to the outer side surface 630 of the connecting block 63. The fixed arm is provided as a cantilever 652 connected to the plate body 650 at one end, and the end of the cantilever 652 extends on one side of the slot 654 to form a wrapping end 653, and a riveting force point 658 is provided on the side of the wrapping end 653 away from the connecting block 63, so that the wrapping end 653 forms plastic deformation relative to the other parts of the cantilever 652, so that the wrapping end 653 clamps the inclined mating surface 630 of the connecting block 63. The upper part of the inclined mating surface 630 protrudes outward and the lower part is concave inward to prevent the metal cover from loosening. Those skilled in the art can understand the alternative solutions of this embodiment. The cantilever 652 is not necessarily a cantilever structure, and can be any structure that can connect to the wrapping end 653, as long as the wrapping end 653 can be riveted from the outside to the inside, so that the wrapping end 653 can be plastically deformed and clamp the inclined mating surface 632. With such a structure, the wrapping end 653 can wrap the inclined mating surface 632 of the connecting block 63 with a small deformation to achieve the riveting.

[0052] Secondly, the cross-section of the connecting block 63 in the horizontal direction is roughly rectangular, and has a connecting block outer surface 630 parallel to the outer surface of the peripheral wall 62 and a vertical mating surface 634 perpendicular to the connecting block outer surface 630, and the inclined mating surface 632 connects the vertical mating surface 634 and the connecting block outer surface 630. The vertical mating surface 634 and the inclined mating surface 632 are inclined in the up and down directions, so that the connecting block 63 is in an inverted cone shape with a larger upper part and a smaller lower part. The metal cover plate 65 is provided with an opening 660 of a certain depth at a certain distance away from the slot 654. The opening 660 has a riveting surface 662 arranged roughly parallel to the vertical mating surface 634. After riveting, the plastic deformation causes the cantilever 652 and the wrapping end 653 to move toward the inside of the slot 654, and the cantilever 652 abuts against the vertical mating surface 634, and the wrapping end 653 abuts against the inclined mating surface 632. The up and down inverted cone design of the connecting block 63 can further prevent the metal cover plate 65 from detaching upward from the metal shell.

[0053] In addition, the connecting block 63 has a vertical symmetry plane (not shown), and the metal cover plate 65 and the metal shell 60 are provided with another cantilever, another wrapping end, another vertical mating surface, another inclined mating surface and another riveting surface that are symmetrical about the symmetry plane, so that the riveting jig can symmetrically apply riveting force.

[0054] As a workaround for the sixth embodiment, the horizontal cross-section of the connecting block 63 can be set to an isosceles trapezoid, with its outer surface shorter and its inner surface longer, so that inclined surfaces can be formed on both sides of the connecting block 63 corresponding to the waist of the trapezoid. When the cantilever 652 abuts against the inclined surface corresponding to the waist of the trapezoid, an inward force is generated to prevent the surrounding wall 62 from opening outward.

[0055] Regarding the manufacturing method of the circulator / isolator chamber assembly of the second to sixth embodiments, except for the sixth embodiment, the inclined mating surface 632 of the connecting block 63 and the inclined surfaces on both sides of the corresponding trapezoidal waist can be formed by adding pier pressing and shaping in step A, the rest is generally the same as the first embodiment, so they are not described here.

Claims

1. A circulator / isolator chamber assembly, comprising a metal shell, a metal cover plate and an internal element, wherein the metal shell comprises a bottom plate and a peripheral wall extending upward from the periphery of the bottom plate, the metal cover plate is covered on the metal shell to form a receiving chamber surrounded by the bottom plate, the peripheral wall and the metal cover plate, the receiving chamber is used to receive the internal element, the peripheral wall extends upward to form a connecting block, the connecting block is embedded in the edge of the metal cover plate, and the characteristics are: The edge of the metal cover plate is riveted to the peripheral wall of the metal shell, and the riveting is arranged between the connecting block and the edge of the metal cover plate and is formed by a riveting pressure parallel to the plane where the metal cover plate is located.

2. The annular device / isolator chamber assembly according to claim 1, characterized in that: The surface of the metal shell is provided with a coating, and the metal cover plate includes a plate body and a fixed arm connected to the plate body, a slot is formed between the fixed arm and the plate body, and after the metal cover plate is covered on the metal shell, the connecting block is inserted into the slot from bottom to top, and after riveting is completed, the fixed arm is plastically deformed into the slot, thereby clamping the connecting block to form the riveting.

3. The annular device / isolator chamber assembly according to claim 2, characterized in that: The slot hole is a through hole that penetrates from top to bottom. The fixed arm continuously extends to connect the opposite sides of the slot hole, and both ends thereof are connected to the plate body. The plastic deformation causes the middle of the fixed arm to move into the slot hole.

4. The annular device / isolator chamber assembly according to claim 2, characterized in that: The fixed arm includes a cantilever connected to the plate body at one end, and the end of the cantilever extends on one side of the slot to form a wrapping end, and the plastic deformation causes the cantilever and the wrapping end to move toward the inside of the slot. The fixed arm also includes another cantilever, and the end of the other cantilever extends on the opposite side of the slot to form another wrapping end, and the plastic deformation causes the other cantilever and the other wrapping end to move toward the inside of the slot, and the two wrapping ends are at least partially wrapped around the outside of the connecting block.

5. The annular device / isolator chamber assembly according to claim 4, characterized in that: The cross-section of the connecting block in the horizontal direction is roughly rectangular, and has an outer surface of the connecting block parallel to the outer surface of the peripheral wall and a vertical mating surface perpendicular to the outer surface of the connecting block. An inclined mating surface is connected between the vertical mating surface and the outer surface of the connecting block. The vertical mating surface and the inclined mating surface are inclined in the up and down directions, so that the connecting block is an inverted cone with a larger top and a smaller bottom. The metal cover plate is provided with an opening of a certain depth at a certain distance away from the slot, and the opening has a riveting surface arranged roughly parallel to the vertical mating surface. After riveting, the cantilever abuts against the vertical mating surface, and the wrapped end abuts against the inclined mating surface. In addition, the connecting block has a vertical symmetry plane, and the metal cover plate and the metal shell are provided with another vertical mating surface, another inclined mating surface and another riveting surface symmetrical about the symmetry plane, so that the riveting jig can symmetrically apply force to rivet.

6. The annular device / isolator chamber assembly according to claim 2, characterized in that: The fixed arm includes a cantilever connected to the plate body at one end, and the cross-section of the connecting block in the horizontal direction is set to an isosceles trapezoid. The outer surface of the trapezoid is shorter and the inner surface is longer, so that inclined surfaces can be formed on both sides of the connecting block corresponding to the waist of the trapezoid. When the cantilever is against the inclined surface corresponding to the waist of the trapezoid, an inward force is generated to prevent the surrounding wall from opening outward.

7. The annular device / isolator chamber assembly according to claim 4, characterized in that: The wrapping end is provided with a riveting force point on a side away from the connecting block, so that the wrapping end forms plastic deformation relative to other parts of the cantilever, so that the wrapping end clamps the connecting block.

8. The annular device / isolator chamber assembly according to claim 2, characterized in that: The connecting block forms a mating surface on the side facing the fixed arm, and the connecting block is pressed so that the mating surface forms an upper part and a lower part that are aligned vertically at least in a local position, the upper part protrudes toward the fixed arm, and the lower part is concave inward, and the riveting action site is at least partially aligned with the lower part of the connecting block along the riveting force direction.

9. The annular device / isolator chamber assembly according to claim 8, characterized in that: The upper portion and the lower portion of the matching surface are connected by an inclined surface.

10. The annular device / isolator chamber assembly according to claim 8, characterized in that: The lower portion is a countersunk hole or a through hole arranged on the connecting block.

11. The annular device / isolator chamber assembly according to claim 8, characterized in that: The lower part is arranged on opposite sides of the connecting block in the horizontal direction, and forms a through groove which penetrates the connecting block in a direction perpendicular to the peripheral wall.

12. The annular device / isolator chamber assembly according to claim 2, characterized in that: The connection block forms a matching surface at least on a side facing the fixed arm, and the matching surface is pressed to form a corrugated surface.

13. A method for manufacturing a circulator / isolator cavity assembly, characterized in that The following steps are involved: A. Provide a metal shell, a metal cover plate and internal components, wherein the metal shell includes a bottom plate and a peripheral wall extending upward from the periphery of the bottom plate, wherein a connecting block extends upward from the peripheral wall; B. Installing the internal components into the metal housing; C. Cover the metal cover plate on the metal shell, at which time the connecting block is embedded in the edge of the metal cover plate, and the internal components are accommodated in the accommodating cavity surrounded by the bottom plate, the peripheral wall and the metal cover plate; D. Apply a riveting pressure parallel to the plane where the metal cover plate is located to the side surface of the metal cover plate, so that a riveted connection is formed between the connecting block and the metal cover plate.

14. The method for manufacturing a circulator / isolator chamber assembly according to claim 13, wherein: In step A, the metal cover plate includes a plate body and a fixed arm connected to the plate body, and a slot is formed between the fixed arm and the plate body, so that after step C, the connecting block is inserted into the slot from bottom to top, and after step D, the fixed arm is plastically deformed into the slot, thereby clamping the connecting block to form the riveting.

15. The method for manufacturing a circulator / isolator chamber assembly according to claim 14, wherein: In step A, the connecting block forms a mating surface on the side facing the fixed arm, and the connecting block is pressed so that the mating surface forms an upper part and a lower part that are aligned vertically at least in a local position, the upper part protrudes toward the fixed arm, and the lower part is concave inward. In step D, the riveting action site is at least partially aligned with the lower part of the connecting block along the direction of the riveting force, and force is applied perpendicular to the mating surface.

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