CN117832789A

CN117832789A - Coupling adjustment sheet, filter, and method for manufacturing coupling adjustment sheet

Info

Publication number: CN117832789A
Application number: CN202410205111.XA
Authority: CN
Inventors: 温世议
Original assignee: Anhui Tatfook Technology Co Ltd
Current assignee: Anhui Tatfook Technology Co Ltd
Priority date: 2024-02-23
Filing date: 2024-02-23
Publication date: 2024-04-05

Abstract

The invention relates to the technical field of communication, and provides a coupling adjusting sheet body, a filter and a manufacturing method of the coupling adjusting sheet body. The coupling adjusting sheet body comprises a mounting sheet and a coupling sheet, wherein the coupling sheet is provided with a height direction, a thickness direction and a width direction which are perpendicular to each other, the projection area of the coupling sheet in the thickness direction is larger than the projection area of the coupling sheet in the width direction, the mounting sheet comprises a bending section, a first mounting part and a second mounting part, the bending section is integrally formed and connected to the lateral part of the coupling sheet in the width direction, the first mounting part and the second mounting part are integrally formed in the bending section, and the first mounting part and the second mounting part are distributed at intervals along the height direction to form clamping intervals, and the first mounting part is positioned above the second mounting part. Therefore, the coupling adjusting sheet body is of an integrated sheet body structure, the number of parts and assembly operation are reduced, the production efficiency and the assembly efficiency of the coupling adjusting sheet body are improved, and the coupling adjusting sheet body is compact in structure and beneficial to miniaturization, conciseness and light weight design of the coupling adjusting sheet body.

Description

Coupling adjustment sheet, filter, and method for manufacturing coupling adjustment sheet

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a coupling adjustment sheet, a filter, and a method for manufacturing the coupling adjustment sheet.

Background

The filter is used as a radio frequency device, and can pass the minimum loss of signals in a certain frequency band and inhibit signals in other frequency bands, so that the effect of selecting signals in a required frequency band is achieved.

Some existing filters include a cavity, resonators, a cover plate, and a coupling adjustment structure, where the two or more resonators are mounted in the cavity, the cavity has an opening, the cover plate covers one end of the cavity having the opening, and the cover plate has a mounting hole. The coupling adjusting structure is arranged in the mounting hole of the cover plate and extends to the space between the two resonators in the cavity, and is used for adjusting the coupling strength between the two resonators or adjusting the position of the transmission zero point in the passband. However, the existing coupling adjusting structure is complex in structure, so that more parts are caused, the weight is large, and the simplicity and the light weight design of the filter are not facilitated.

Disclosure of Invention

The invention aims to provide a coupling adjusting sheet body, a filter and a manufacturing method of the coupling adjusting sheet body, and aims to solve the technical problem that an existing coupling adjusting structure is complex in structure.

In a first aspect, the present application provides a coupling adjustment lamellar body, coupling adjustment lamellar body includes mounting plate and coupling piece, the coupling piece has two liang of vertically direction of height, thickness direction and width direction, the coupling piece is in thickness direction's projected area is greater than the coupling piece is in width direction's projected area, the mounting plate includes the section of bending, first installation department and second installation department, the section integrated into one piece of bending connect in the coupling piece is in width direction's lateral part, first installation department with second installation department integrated into one piece in the section of bending, first installation department with second installation department is followed the direction of height interval distributes in order to form the centre gripping interval, first installation department is located the top of second installation department.

In a second aspect, the present application provides a filter, the filter includes cavity, apron, resonance piece and the coupling regulation lamellar body of arbitrary one of the above-mentioned, the quantity of resonance piece is more than two, more than two the resonance piece install in the cavity, the cavity has the opening, the apron lid in the cavity has open-ended one end, the apron has the mounting hole, the mounting plate passes through the centre gripping interval rotationally centre gripping the both ends of mounting hole, the coupling piece is located two between the resonance piece.

In a third aspect, the present application provides a method of manufacturing a coupling adjustment sheet, the method comprising the steps of:

providing a metal sheet, wherein the metal sheet is provided with a coupling sheet blank and a mounting sheet blank, and the mounting sheet blank is positioned at the side part of the coupling sheet blank in the width direction of the coupling sheet blank;

stamping a first mounting part and a second mounting part which are distributed at intervals along the height direction on the mounting plate blank;

and bending the mounting plate blank around the height direction to form a bending section, and enabling the first mounting part and the second mounting part to protrude out of the periphery of the bending section.

The coupling adjusting sheet body, the filter and the manufacturing method of the coupling adjusting sheet body have the advantages that: the coupling adjusting sheet body clamps two ends of the mounting hole of the cover plate through the first mounting part and the second mounting part, namely the first mounting part and the second mounting part respectively prop against two ends of the mounting hole, and are fixedly mounted at two ends of the mounting hole in a connecting mode such as welding, fastening piece connection, clamping connection or bonding, and the like; the projected area of the coupling piece in the thickness direction is larger than the projected area of the coupling piece in the width direction, so that the opposite areas of the coupling piece and two adjacent resonant pieces are changed in the rotating process of the coupling piece, and the coupling strength between the two resonant pieces is regulated or the position of a transmission zero point in a passband is regulated; because section integrated into one piece is connected in the coupling piece of bending, first installation department and second installation department integrated into one piece in the section of bending to coupling adjustment lamellar body formula lamellar body structure as an organic whole has reduced part quantity and assembly operation, has solved the complicated technical problem of current coupling adjustment structure, has improved the production efficiency and the assembly efficiency of coupling adjustment lamellar body, and compact structure does benefit to coupling adjustment lamellar body miniaturization, succinct and lightweight design.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a coupling adjustment sheet provided in the present application;

FIG. 2 is a schematic view of an assembly of the coupling adjustment blade of FIG. 1;

FIG. 3 is a schematic view of a second structure of the coupling adjustment sheet provided herein;

FIG. 4 is an assembled schematic view of the coupling adjustment blade of FIG. 3;

fig. 5 is a schematic view of a third structure of the coupling adjustment sheet provided in the present application;

FIG. 6 is an assembled schematic view of the coupling adjustment blade of FIG. 5;

FIG. 7 is a schematic view of a projection of the coupling adjustment blade of FIG. 5 in a height direction;

fig. 8 is a schematic view of a fourth structure of the coupling adjustment sheet provided in the present application;

FIG. 9 is an assembled schematic view of the coupling adjustment blade of FIG. 8;

fig. 10 is a schematic structural diagram of a filter according to the present embodiment;

Fig. 11 is an exploded view of the filter provided in the present embodiment;

fig. 12 is a flow chart of a manufacturing method of the coupling adjustment sheet according to the present embodiment.

Wherein, each reference sign in the figure:

x, thickness direction; y, width direction; z, height direction;

10. a cavity; 11. an opening;

20. a cover plate; 21. a mounting hole; 211. a first chamfer; 212. a second chamfer;

30. a resonating member;

40. a coupling adjustment blade;

100. a mounting piece; 110. a first mounting portion; 120. a second mounting portion; 130. a bending section; 131. bending the window; 132. a second window; 133. a connection part; 140. a clamping interval;

200. a coupling piece; 201. a pressing part.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrase "in one embodiment" or "in some embodiments" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In the description of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

Example 1

Referring to fig. 1, 3, 5 and 8, the coupling adjustment sheet 40 provided herein includes a mounting sheet 100 and a coupling sheet 200. The coupling sheet 200 has a height direction Z, a thickness direction X, and a width direction Y perpendicular to each other. The projected area of the coupling piece 200 in the thickness direction X is larger than the projected area of the coupling piece 200 in the width direction Y, the mounting piece 100 comprises a first mounting portion 110, a second mounting portion 120 and a bending section 130, the bending section 130 is integrally formed and connected to the side portion of the coupling piece 200 in the width direction Y, the first mounting portion 110 and the second mounting portion 120 are integrally formed and connected to the bending section 130, the first mounting portion 110 and the second mounting portion 120 are distributed at intervals along the height direction Z to form a clamping interval 140, and the first mounting portion 110 is located above the second mounting portion 120.

In which, in connection with fig. 2, 4, 6 and 9, the cover plate 20 of the filter has a through mounting hole 21. The mounting hole 21 has apertures at both ends thereof in the hole depth direction (see the height direction Z), respectively, and the end of the mounting hole 21 refers to the hole edge and the surrounding surface.

In this embodiment, the first mounting portion 110 abuts against the end portion of the mounting hole 21 in the positive direction of the height direction Z, and restricts the negative movement of the coupling adjustment sheet 40 in the height direction Z without the action of a pull-down external force; the second mounting portion 120 abuts against the end portion of the mounting hole 21 in the negative direction of the height direction Z, under the action of no pull-up external force, the forward movement of the coupling adjustment sheet body 40 in the height direction Z is limited, the coupling adjustment sheet body 40 is prevented from being separated from the mounting hole 21 in the positive direction and the negative direction of the height direction Z, and the position stability of the coupling adjustment sheet body 40 in the height direction Z is achieved. Meanwhile, the first mounting portion 110 and the second mounting portion 120 are abutted against two ends of the mounting hole 21, so that the supporting force of the cover plate 20 on the coupling adjustment sheet 40 is obtained, and the mounting stability is enhanced. The coupling adjustment sheet body 40 clamps two ends of the mounting hole 21 of the cover plate 20 through the first mounting portion 110 and the second mounting portion 120, that is, the first mounting portion 110 and the second mounting portion 120 respectively abut against two ends of the mounting hole 21, instead of being fixedly mounted at two ends of the mounting hole 21 in a connection manner such as welding, fastening connection, clamping connection or bonding, the end of the mounting hole 21 is not provided with a bump for blocking rotation, so that the first mounting portion 110 and the second mounting portion 120 can rotate along the circumferential direction of the mounting hole 21 under the driving of an external force, and the coupling adjustment sheet body 40 can be rotatably arranged on the cover plate 20. Since the projected area of the coupling piece 200 in the thickness direction X is larger than the projected area of the coupling piece 200 in the width direction Y, the opposite areas of the coupling piece 200 and the two adjacent resonant pieces 30 are changed in the rotation process, so that the coupling strength between the two resonant pieces 30 is adjusted or the position of the transmission zero point in the passband is adjusted.

Compared with the coupling piece 200 and the mounting piece 100 which are connected in a split connection mode such as laser welding, fastener connection, threaded connection, clamping connection and pressure connection, or compared with the coupling piece 200 and the block-shaped mounting structure which are integrally connected, in the embodiment, the bending section 130 is integrally connected with the coupling piece 200, the first mounting part 110 and the second mounting part 120 are integrally connected with the bending section 130, the coupling adjusting sheet body 40 is of an integral sheet body structure, the integral sheet body structure is strong, the number of parts and assembly operation are reduced, the connection reliability is high, the assembly consistency is high, the sheet structure simplifies the integral forming process, the qualification rate of the integral forming manufacturing is improved, the manufacturing precision of the integral forming process is improved, the structure is compact, and the miniaturization, the conciseness and the light-weight design of the coupling adjusting sheet body 40 and the filter are facilitated.

In some embodiments, referring to fig. 1 to fig. 4, the first mounting portion 110 and the second mounting portion 120 are located between an end of the bending section 130 near the coupling piece 200 and an end of the bending section 130 far away from the coupling piece 200, in the height direction Z, the bending section 130 is connected between the first mounting portion 110 and the second mounting portion 120, an outer side wall of the bending section 130 located between the first mounting portion 110 and the second mounting portion 120 is an arc surface, which is beneficial to being attached to a hole wall of the mounting hole 21, on one hand, limiting of the bending section 130 in a radial direction of the mounting hole 21 is achieved, radial movement of the coupling adjustment sheet 40 along the mounting hole 21 is prevented, mounting stability and position stability can be ensured, product index change due to movement is avoided, on the other hand, contact area and supporting force between the bending section 130 and the mounting hole 21 are enhanced, the coupling adjustment sheet 40 is beneficial to being rotatably mounted in the arc surface mounting hole 21, and on the other hand, resistance of the coupling adjustment sheet 40 received in a rotation process can be reduced, and the coupling adjustment sheet 40 is beneficial to being rotated and adjusted. In other embodiments, the outer side wall of the bending section 130 between the first mounting portion 110 and the second mounting portion 120 is a plane, and when the coupling adjustment sheet 40 is mounted in the mounting hole 21, the plane may not contact with the wall of the mounting hole 21, so as not to affect the rotation of the coupling adjustment sheet 40, or the edge of the plane contacts with the wall of the mounting hole 21, so as to improve the rotation supporting force, and also prevent the coupling adjustment sheet 40 from moving in the radial direction, and ensure the stable rotation of the coupling adjustment sheet 40.

It will be appreciated that in other embodiments, referring to fig. 5 and 6, the first mounting portion 110 and the second mounting portion 120 are located at the end of the bending section 130 away from the coupling piece 200, that is, in the height direction Z, the bending section 130 is not connected between the first mounting portion 110 and the second mounting portion 120, and the side wall of the clamping space 140 is in line contact with the hole wall of the mounting hole 21, so as to improve the rotation supporting force, and also prevent the coupling adjustment sheet 40 from moving in the radial direction, and ensure the stable rotation of the coupling adjustment sheet 40.

In some embodiments, with reference to fig. 1, 3, 5 and 8, the number of the bending sections 130 is two, and the two bending sections 130 are located on two opposite sides of the coupling piece 200 in the width direction Y, so that the overall structure of the coupling adjustment sheet 40 is symmetrical or approximately symmetrical, the gravity center is easy to fall on the axis line of the height direction Z, the gravity center is stable and not offset, and the coupling adjustment sheet 40 is ensured to have good clamping effect, installation stability and position stability.

Specifically, the two bending sections 130 directly abut against the hole wall of the mounting hole 21 along the radial direction of the mounting hole 21, and/or abut against the two ends of the mounting hole 21 along the depth direction of the mounting hole 21 through the first mounting portion 110 and the second mounting portion 120, which is beneficial to the uniform stress of the coupling adjustment sheet body 40 and improves the mounting stability.

Specifically, two bending sections 130 are located on top of the coupling tab 200. The first mounting portion 110 on the bending section 130 abuts against the upper end portion of the mounting hole 21, that is, the first mounting portion 110 is approximately flush with the top surface of the cover plate 20, and the bending section 130 is located at the top of the coupling piece 200, so that the coupling piece 200 is prevented from being higher than the bending section 130, and further the coupling piece 200 is prevented from being higher than the cover plate 20, products such as a filter can be guaranteed to be concise and attractive on one side of the cover plate 20, product indexes can be influenced by collision between the products such as the filter and other structures when the products such as the filter are assembled with other structures, and the overall height of the products such as the filter can be reduced.

It should be noted that, in conjunction with fig. 1, 3 and 5, the number of the bending sections 130 may be one or two. When the number of the bending sections 130 is two, the two bending sections 130 are respectively located at opposite sides of the coupling piece 200 in the width direction Y, wherein each bending section 130 may be integrally connected with the first mounting portion 110 and the second mounting portion 120, or one bending section 130 is integrally connected with the first mounting portion 110, the other bending section 130 is integrally connected with the second mounting portion 120, or one bending section 130 is integrally connected with the first mounting portion 110 and the second mounting portion 120, and the other bending section 130 may be connected with or not connected with the first mounting portion 110 or the second mounting portion 120, which is not limited herein.

For example, referring to fig. 1 to 9, the two bending sections 130 are connected with the first mounting portion 110 and the second mounting portion 120 that are distributed at intervals along the height direction Z, so that the two bending sections 130 are stably positioned and clamped at two ends of the mounting hole 21 in the height direction Z, and the coupling adjustment sheet body 40 is further ensured to be stably assembled in the mounting hole 21, and the coupling adjustment sheet body 40 is prevented from loosening and falling.

For example, the number of the bending sections 130 is two, the first mounting portion 110 is located in one of the bending sections 130, the number of the first mounting portion 110 may be one, two or more than two, the second mounting portion 120 is located in the other bending section 130, and the number of the second mounting portion 120 may be one, two or more than two, so that the two bending sections 130 respectively abut against the end portions of the mounting holes 21 through the first mounting portion 110 and the second mounting portion 120, which is beneficial for the stability of the coupling piece 200 in the rotation process. And, the first installation department 110 and the second installation department 120 are located different bending sections 130 respectively, increased the integrated into one piece processing space and the layout space of first installation department 110 and second installation department 120, simultaneously because a bending section 130 is provided with only first installation department 110 or second installation department 120, namely a bending section 130 only has limited the position in the direction of height Z on the positive direction or on the negative direction, when coupling adjustment lamellar body 40 installs and removes, only need the elastic bending section 130, remove the unidirectional restriction in the direction of height Z that it received, just can pass through mounting hole 21, need not the elastic bending section 130 of two bending, be favorable to simplifying the disassembly operation.

For example, the number of the bending sections 130 is two, one bending section 130 integrally forms the first mounting portion 110 and the second mounting portion 120, and the other bending section 130 abuts against the hole wall of the mounting hole 21 and does not form the first mounting portion 110 and the second mounting portion 120. During assembly, an operator only needs to assemble the first mounting part 110 and the second mounting part 120 on one bending section 130 to two ends of the mounting hole 21, and the outer wall of the other bending section 130 naturally abuts against the hole wall of the mounting hole 21, so that clamping operation with the mounting hole 21 is not needed, and the assembly operation is simplified.

For example, the number of the bending sections 130 is two, wherein one bending section 130 is integrally formed to process the first mounting portion 110 and the second mounting portion 120 which are distributed at intervals along the height direction Z, so that the bending section 130 is stably positioned and clamped at two ends of the mounting hole 21 in the height direction Z, the coupling adjusting sheet body 40 is ensured to be stably assembled in the mounting hole 21, the other bending section 130 is integrally formed to process the first mounting portion 110 or the second mounting portion 120, the supporting force between the bending section 130 and the end of the mounting hole 21 can be increased, and only the positive direction or the negative direction in the height direction Z is used for unidirectional limiting, so that the assembly and disassembly operations of the bending section 130 are facilitated.

For another example, the number of the bending sections 130 is one, the first mounting portion 110 and the second mounting portion 120 are integrally connected to the bending sections 130, and the bending sections 130 abut against the ends of the mounting holes 21 through the first mounting portion 110 and the second mounting portion 120, respectively, so as to realize the positional stability of the coupling adjustment sheet body 40 in the height direction Z. Further, the number of the first mounting portions 110 may be two or more, and the two or more first mounting portions 110 abut against the upper end portions of the mounting holes 21 in different radial directions, so as to improve the stability of the coupling adjustment sheet 40 in the circumferential direction; alternatively, the number of the second mounting portions 120 may be two or more, and two or more second mounting portions 120 abut against the lower end portions of the mounting holes 21 in different radial directions, so as to improve the stability of the coupling adjustment sheet 40 in the circumferential direction; or, the coupling piece 200 abuts against the hole wall of the mounting hole 21, so that the coupling adjustment sheet body 40 is prevented from moving along the radial direction of the mounting hole 21, and the stability of the coupling adjustment sheet body 40 in the circumferential direction is improved.

In some embodiments, when the bending section 130 is connected with the first mounting portions 110, the number of the first mounting portions 110 on the bending section 130 may be one, two or more than two, which is not limited herein. When the number of the first mounting portions 110 on the bending section 130 is more than two, the more than two first mounting portions 110 are distributed at intervals along the circumferential direction of the coupling adjustment sheet 40, and can abut against the upper end portions of the mounting holes 21 in different radial directions, so that the abutting positions of the coupling adjustment sheet 40 and the end portions of the mounting holes 21 in the circumferential direction of the mounting holes 21 are increased, and the stability of the coupling adjustment sheet 40 in the circumferential direction is improved.

In some embodiments, when the bending section 130 is connected with the second mounting portions 120, the number of the second mounting portions 120 on the bending section 130 may be one, two or more than two, which is not limited herein. When the number of the second mounting portions 120 on the bending section 130 is more than two, the two or more second mounting portions 120 are distributed at intervals along the circumferential direction of the coupling adjustment sheet 40, and can abut against the lower end portions of the mounting holes 21 in different radial directions, so that the abutting positions of the coupling adjustment sheet 40 and the end portions of the mounting holes 21 in the circumferential direction of the mounting holes 21 are increased, and the stability of the coupling adjustment sheet 40 in the circumferential direction is improved.

The number of the first mounting portions 110 and the number of the second mounting portions 120 in the coupling adjustment sheet 40 may be the same or different, and are not limited herein.

In some embodiments, in combination with fig. 1, 3, 5 and 8, the projections of the first mounting portion 110 and the second mounting portion 120 in the height direction Z overlap, so as to avoid generating a moment arm, and the two are opposite to the two ends of the clamping mounting hole 21 from top to bottom, so as to reduce loosening or displacement generated under vibration or stress conditions.

In other embodiments, the projections of the first mounting portion 110 and the second mounting portion 120 in the height direction Z do not overlap each other, that is, the first mounting portion 110 and the second mounting portion 120 are located in different radial directions of the mounting hole 21, so that the abutting position of the coupling adjustment sheet 40 with the end portion of the mounting hole 21 in the circumferential direction of the mounting hole 21 is increased, and the stability of the coupling adjustment sheet 40 in the circumferential direction is improved.

In some embodiments, referring to fig. 1 and 3, in the projection along the height direction Z, the first mounting portion 110 and the second mounting portion 120 protrude outward along the radial direction of the coupling adjustment sheet 40, and the first mounting portion 110 and the second mounting portion 120 protruding along the radial direction do not limit the rotation direction of the coupling adjustment sheet 40, and the coupling adjustment sheet 40 can rotate either clockwise or counterclockwise, so that the flexible rotation angle of the coupling adjustment sheet 40 is facilitated, and the coupling strength between the two resonant members 30 is flexibly adjusted.

In other embodiments, referring to fig. 5 and 7, in the projection in the height direction Z, the first and second mounting portions 110 and 120 each protrude outward in a radial direction inclined to the coupling adjustment sheet 40, and the first and second mounting portions 110 and 120 are located on the same side in the radial direction of the coupling adjustment sheet 40. Referring to fig. 7, the first and second mounting portions 110 and 120 protrude outward in a direction P, which obliquely intersects a radial direction O of the coupling adjustment sheet 40, with an included angle D. Thus, if the first mounting portion 110 and the second mounting portion 120 are clamped at both ends of the mounting hole 21 in an inclined manner, if the coupling adjustment sheet 40 rotates in the inclined direction of the first mounting portion 110 and the second mounting portion 120, the contact length between the first mounting portion 110 and the second mounting portion 120 and the end of the mounting hole 21 will gradually increase until the bending section 130 collides with the wall of the mounting hole 21, preventing the coupling adjustment sheet 40 from continuing to rotate; and the reverse rotation can not cause collision between the bending section 130 and the hole wall of the mounting hole 21, so that the unidirectional rotation of the mounting plate 100 is limited, the reverse rotation of the coupling adjustment plate body 40 is effectively prevented, misoperation of staff is avoided, and the rotation of the coupling adjustment plate body 40 along the inclined directions of the first mounting part 110 and the second mounting part 120 caused by vibration when the filter is used is avoided. As shown in fig. 5 and 6, the coupling adjustment plate 40 can be rotated only counterclockwise and cannot be rotated clockwise.

Optionally, the included angle D ranges from 30 ° to 90 °.

In some embodiments, referring to fig. 1, fig. 3, fig. 5, and fig. 8, the bending section 130 is elastically bent around the height direction Z, and after bending by means of the resilient characteristic of the bending section 130, the first mounting portion 110 and the second mounting portion 120 integrally formed on the bending section 130 are driven to be pressed against the hole wall of the mounting hole 21 along the radial direction of the mounting hole 21, or the bending section 130 between the first mounting portion 110 and the second mounting portion 120 is pressed against the hole wall of the mounting hole 21 along the radial direction of the mounting hole 21, or the end of the bending section 130 far away from the coupling piece 200 is pressed against the hole wall of the mounting hole 21 along the radial direction of the mounting hole 21 (see fig. 5), so that the coupling adjustment sheet 40 is locked in the radial direction of the mounting hole 21, and the positional stability of the coupling adjustment sheet 40 in the radial direction is improved.

Meanwhile, the outer side wall of the bent section 130 is an arc surface, so that the outer side wall of the bent section 130 is beneficial to being attached to the hole wall of the mounting hole 21, the radial limit of the bent section 130 on the mounting hole 21 is realized, the contact area and the supporting force between the bent section 130 and the mounting hole 21 are enhanced, and the resistance of the coupling adjusting sheet body 40 in the rotating process can be reduced.

In addition, compared with the bending section 130 which is not elastically bent, for example, the bending section 130 is plastically bent into a plurality of flat sheets connected, the elastically bent bending section 130 provided in this embodiment can enhance the deformability of the coupling adjustment sheet body 40, that is, under the action of external force, the bending section 130 can bend inwards more effort-effectively, so that the first mounting portion 110 and the second mounting portion 120 are separated from the end portion of the mounting hole 21, and the assembly and disassembly efficiency is improved.

In one embodiment, referring to fig. 5, at least one of the first mounting portion 110 and the second mounting portion 120 is located at the end of the bending section 130 (i.e. the end far away from the coupling piece 200), and since the bending section 130 corresponds to a cantilever beam structure, the end of the bending section 130 has large deflection and large resilience, so that the end of the bending section 130 may be pressed against the wall of the mounting hole 21 along the radial direction of the mounting hole 21 along with the first mounting portion 110 and/or the second mounting portion 120 being close to the wall of the mounting hole 21, thereby improving the positional stability of the coupling adjustment sheet 40 in the radial direction.

In an embodiment, referring to fig. 1, fig. 3, fig. 5, and fig. 8, the bending section 130 is wound into an arc shape or a spiral shape around the height direction Z, and the winding arrangement can make the occupied space of the bending section 130 smaller, which is beneficial to miniaturization design of the coupling adjustment sheet 40, and a longer bending section 130 can be accommodated in the mounting hole 21 with the same aperture, so that the bending section 130 can be designed to be longer, and the resilience force of the longer bending section 130 is greater, so that the outer side walls of the first mounting portion 110, the second mounting portion 120, and the bending section 130 close to the first mounting portion 110 and the second mounting portion 120 are pressed against the wall of the mounting hole 21 along the radial direction of the mounting hole 21, thereby improving the positional stability of the coupling adjustment sheet 40 in the radial direction.

Optionally, when the number of the bending sections 130 is two, the two bending sections 130 are all bent, so that the two bending sections 130 have resilience force, and the two bending sections 130 are all pressed against the hole wall of the mounting hole 21, so that the position stability of the coupling adjustment sheet body 40 in the radial direction is further improved.

Alternatively, when the number of the bending sections 130 is two, one bending section 130 is provided in a bent state, and the other bending section 130 is not provided in a bent state. The bending section 130 which is arranged in a bending way is pressed on the hole wall of the mounting hole 21, so that the position stability of the coupling adjusting sheet body 40 in the radial direction is ensured. The bending section 130 which is not in bending arrangement can be pressed against the wall of the mounting hole 21 under the action of the resilience force exerted by the other bending section 130. Meanwhile, the bending section 130 which is not bent is difficult to bend inwards due to poor deformability, so that the first mounting part 110 and the second mounting part 120 on the bending section 130 which are not bent are firmly abutted against the end part of the mounting hole 21, looseness is not easy to occur, and the mounting reliability of the coupling adjustment sheet body 40 is improved.

Specifically, the transverse metal sheet of the T-shaped metal sheet is elastically bent around the height direction Z, so that the vertical metal sheet forms the coupling sheet 200, and the T-shaped metal sheet is processed into the coupling adjustment sheet 40 only by a bending process, so that the processing convenience, the structural strength, the structural consistency and the assembly convenience of the coupling adjustment sheet 40 are greatly improved.

In some embodiments, referring to fig. 3 and 4, the coupling adjustment sheet 40 has a bent window 131 through the bent section 130. The bending window 131 is located between the coupling piece 200 and the first mounting portion 110, or the bending window 131 is located between the coupling piece 200 and the second mounting portion 120, or the bending window 131 is located between the coupling piece 200 and the first and second mounting portions 110 and 120. That is, the bent window 131 is closer to the coupling piece 200 than the first and second mounting portions 110 and 120. The bending window 131 is beneficial to reducing the rigidity of the bending section 130, facilitating the elastic bending or plastic bending forming of the bending section 130 and reducing the process difficulty.

When the bending section 130 is elastically bent around the height direction Z, the bending window 131 increases the resilience of the bending section 130, increasing the locking force of the coupling adjustment sheet 40 in the radial direction of the mounting hole 21.

In some embodiments, as viewed in the forward direction of the height direction Z in conjunction with fig. 5 and 9, a side surface of the first mounting portion 110 adjacent to the second mounting portion 120 is disposed obliquely downward or horizontally. Wherein, when a side surface of the first mounting portion 110 adjacent to the second mounting portion 120 has a plane, an included angle a (see fig. 5 and 8) of the plane with respect to the height direction Z is less than or equal to 90 °. Alternatively, when a surface of the first mounting portion 110, which is close to the second mounting portion 120, is an arc surface, an included angle a between the tangent plane and the height direction Z of the arc surface is less than or equal to 90 °. Thus, when the coupling adjustment sheet body 40 is assembled into the mounting hole 21 of the cover plate 20 from top to bottom along the height direction Z, one side surface of the first mounting portion 110, which is close to the second mounting portion 120, abuts against the orifice end surface of the mounting hole 21, and the coupling adjustment sheet body 40 is prevented from moving downwards under the action of external force due to the acute angle or right angle of the included angle a, so that the mounting position of the coupling adjustment sheet body 40 is defined, and meanwhile, the coupling adjustment sheet body 40 can be prevented from being separated from the mounting hole 21 from top to bottom in the use process, so that the position stability of the coupling adjustment sheet body 40 is improved.

It will be appreciated that in other embodiments, as viewed in the forward direction of the height direction Z in conjunction with fig. 2, the first mounting portion 110 is disposed obliquely upward near one side surface of the second mounting portion 120. When a surface of the first mounting portion 110 adjacent to the second mounting portion 120 has a plane, an included angle a between the plane and the height direction Z is greater than 90 °. Alternatively, when a surface of the first mounting portion 110, which is close to the second mounting portion 120, is an arc surface, an included angle a between the tangent plane and the height direction Z is greater than 90 °. When the coupling adjusting sheet body 40 is pulled from top to bottom during disassembly, the coupling adjusting sheet body 40 is moved downwards to be separated from the mounting hole 21, the first mounting part 110 and the second mounting part 120 are not required to be separated from the end part of the mounting hole 21 along the radial direction of the mounting hole 21 by compacting and folding the bending section 130, and the coupling adjusting sheet body 40 is prevented from being deformed plastically and unusable or broken due to compacting and folding the bending section 130. Meanwhile, the first mounting portion 110 is arranged obliquely upwards near to the side surface of the second mounting portion 120, the inclined plane can be matched with the aperture diameter of the upper side of the mounting hole 21 in a certain range, the processing precision requirement of the mounting hole 21 is reduced, chamfering can be omitted at the aperture position of the upper side of the mounting hole 21, and the processing procedure and processing cost of the mounting hole 21 are reduced.

In some embodiments, as viewed in the forward direction of the height direction Z in conjunction with fig. 9, the second mounting portion 120 is disposed obliquely upward away from one side surface of the first mounting portion 110. That is, the angle B between the side surface of the second mounting portion 120 remote from the first mounting portion 110 and the height direction Z is greater than 90 °. In this way, when the coupling adjustment sheet body 40 is assembled into the mounting hole 21 of the cover plate 20 from top to bottom along the height direction Z, a side surface of the second mounting portion 120 away from the first mounting portion 110 contacts the upper hole end surface of the mounting hole 21, and since the surface is inclined upwards, a guiding surface is formed, which is favorable for reducing the resistance of the second mounting portion 120 moving downwards relative to the mounting hole 21, and facilitates the second mounting portion 120 to move downwards to the lower hole end surface of the mounting hole 21, so that the assembly operation of the coupling adjustment sheet body 40 is simplified.

Alternatively, a side surface of the second mounting portion 120 remote from the first mounting portion 110 may be an inclined plane or an arc surface.

It will be appreciated that in other embodiments, as viewed in the forward direction of the height direction Z in conjunction with fig. 2, the second mounting portion 120 extends obliquely downward or horizontally away from a side surface of the first mounting portion 110. That is, the angle B between the side surface of the second mounting portion 120, which is far from the first mounting portion 110, and the height direction Z is less than or equal to 90 °, preventing the coupling adjustment sheet 40 from being fitted into the mounting hole 21 of the cover plate 20 from top to bottom in the height direction Z. At this time, in order to facilitate the fitting of the coupling adjustment sheet 40 into the mounting hole 21, the second mounting part 120 may be guided to be elastically contracted into the mounting hole 21 by providing a chamfer at the upper end of the mounting hole 21; or, the bending section 130 of the coupling adjustment sheet 40 can be clamped by a clamp to be folded and contracted, and when the second installation part 120 reaches the lower end part of the installation hole 21 and the first installation part 110 reaches the upper end part of the installation hole 21, the clamp is removed again, so that the shape of the coupling adjustment sheet 40 is restored, and the first installation part 110 and the second installation part 120 respectively clamp the two ends of the installation hole 21, so that the assembly is completed.

In some embodiments, as seen in the forward direction along the height direction Z in conjunction with fig. 2, the surface of the side of the second mounting portion 120, which is close to the first mounting portion 110, is gradually inclined downward, i.e., the included angle C in the drawing is greater than 90 °, which is beneficial to the coupling adjustment sheet 40 being pulled out from the mounting hole 21 from bottom to top under the action of external force pull-up, so as to simplify the disassembly operation, and avoid that the first mounting portion 110 and the second mounting portion 120 are separated from the end of the mounting hole 21 along the thickness direction X by tightly closing the bending section 130, which avoids that the coupling adjustment sheet 40 is unusable or broken due to plastic deformation caused by tightly pressing the two coupling sheets 200. Meanwhile, the surface of one side of the second mounting part 120, which is close to the first mounting part 110, gradually inclines downwards, the inclined plane can be matched with the aperture diameter of the lower side of the mounting hole 21 in a certain range, the processing precision requirement of the mounting hole 21 is reduced, the chamfer angle can not be processed at the aperture position of the lower side of the mounting hole 21, and the processing procedure and the processing cost of the mounting hole 21 are reduced.

Alternatively, a side surface of the second mounting portion 120 adjacent to the first mounting portion 110 may be an inclined plane or an arc surface.

It should be noted that, in the coupling adjustment sheet 40 provided in the present application, the first mounting portion 110 and the second mounting portion 120 may be integrally formed on the bending section 130 by punching, and the first mounting portion 110 and the second mounting portion 120 protrude outwards from the outer wall of the bending section 130 to be in abutting fit with the end portion of the mounting hole 21. The first mounting portion 110 and the second mounting portion 120 may be formed at the top of the bending section 130 by bending, and a through window may be formed on the side wall of the bending section 130, so that the first mounting portion 110 and the second mounting portion 120 may be formed at the side wall of the bending section 130 by bending, and may be integrally connected to the end of the bending section 130, which is not limited herein. It is understood that the first mounting portion 110 and the second mounting portion 120 may be integrally formed by casting, or integrally formed by injection molding, other than stamping.

In some embodiments, referring to fig. 1 and 3, one end of the first mounting portion 110 is connected to the top of the bending section 130, and the other end of the first mounting portion 110 extends radially outwards of the coupling adjustment sheet 40, so that the first mounting portion 110 protrudes from the outer periphery of the bending section 130, and the first mounting portion 110 is not blocked by structure in the height direction Z, that is, the first mounting portion 110 is pressed by the upper end of the mounting hole 21 to be elastically deformed in the height direction Z, so that the first mounting portion 110 is pressed by the upper end of the mounting hole 21 to be elastically deformed in a direction away from the second mounting portion 120 during assembly, on one hand, the first mounting portion 110 has a rebound property, on the other hand, even if the first mounting portion 110 and/or the mounting hole 21 have a machining tolerance, the first mounting portion 110 and the upper end of the mounting hole 21 are adaptively elastically deformed to be matched, and the machining tolerance is absorbed, and the tight fit is realized, so that the axial position stability and the state stability of the coupling adjustment sheet 40 after being mounted to the mounting hole 21 can be ensured and improved.

Specifically, referring to fig. 1, the first mounting portion 110 is bent outwards to form at the top of the bending section 130, so that the first mounting portion 110 is integrally formed at the bending section 130, and the connection between the first mounting portion and the bending section is firm and reliable. Moreover, by applying the punching force to the first mounting portion 110, the first mounting portion is turned outwards, and the bending section 130 does not need to bear the punching force, so that the structural strength of the bending section 130 is guaranteed; meanwhile, the height of the bending section 130 can be reduced, on one hand, the bending processing of the bending section 130 is facilitated, and when the bending section 130 is bent, the resilience force of the bending section 130 with smaller height is larger and can be pressed on the wall of the mounting hole 21 along the radial direction of the mounting hole 21, on the other hand, the material of the bending section 130 can be reduced, and the lightweight design of the coupling adjusting sheet body 40 is facilitated.

Specifically, referring to fig. 3, the bending section 130 is at least partially concavely configured, and the first mounting portion 110 is integrally connected to the top of the bending section 130, so that the first mounting portion 110 protrudes from the outer periphery of the bending section 130 relative to the bending section 130 of the portion, and can abut against the upper end portion of the mounting hole 21. In addition, the first mounting portion 110 does not bear the impact force, the first mounting portion 110 maintains the characteristics of the original material structure, is not subjected to external force processing deformation, has no processing and forming defects, is beneficial to maintaining the rigidity and strength of the first mounting portion 110, and improves the limiting effect of the upper ends of the first mounting portion 110 and the mounting hole 21. Meanwhile, compared with the fact that the first mounting portion 110 is bent outwards, the bending angle, the bending shape and even secondary bending are needed to be considered, the bending section 130 is concaved inwards by applying the stamping force, so that the concave can be naturally completed by one-step stamping, the shape and the angle are not needed to be considered, and the processing difficulty is reduced.

Optionally, the bending section 130 has a through bending window 131, the bending window 131 is close to the concave position of the bending section 130, on one hand, the strength of the bending section 130 in the height direction Z is reduced, the bending operation is facilitated, on the other hand, the limitation of the concave part in the circumferential direction is eliminated for the bending section 130, the stamping concave operation is facilitated to be performed more effort-saving, on the other hand, the part of the bending section 130 above the bending window 131 forms a connecting part 133, and the connecting part 133 supports and is connected to the circumferential position of the first mounting part 110, so that the rigidity and strength of the first mounting part 110 are further improved.

In some embodiments, referring to fig. 1 and 3, one end of the second mounting portion 120 is connected to the bottom of the bending section 130, and the other end of the second mounting portion 120 extends radially outwards of the coupling adjustment sheet 40, so that the second mounting portion 120 protrudes from the outer periphery of the bending section 130, and the second mounting portion 120 is not blocked by structure in the height direction Z, that is, the second mounting portion 120 is pressed by the lower end of the mounting hole 21 to be elastically deformed in the height direction Z, so that the second mounting portion 120 is pressed by the lower end of the mounting hole 21 to be elastically deformed in a direction away from the first mounting portion 110 during assembly, on one hand, the second mounting portion 120 has a rebound property, on the other hand, even if there is a machining tolerance between the second mounting portion 120 and/or the mounting hole 21, the second mounting portion 120 and the lower end of the mounting hole 21 are adaptively elastically deformed to be matched, so as to absorb the machining tolerance, and to realize a tight fit, so that the axial position stability and the state stability of the coupling adjustment sheet 40 after being mounted to the mounting hole 21 can be ensured and improved.

Specifically, referring to fig. 1, the second mounting portion 120 is bent outwards to form at the bottom of the bending section 130, so that the second mounting portion 120 is integrally formed at the bending section 130, and the two are firmly and reliably connected. Moreover, by applying the punching force to the second mounting portion 120, the second mounting portion is turned outwards, and the bending section 130 does not need to bear the punching force, so that the structural strength of the bending section 130 is guaranteed; meanwhile, the height of the bending section 130 can be reduced, on one hand, the bending processing of the bending section 130 is facilitated, and when the bending section 130 is bent, the resilience force of the bending section 130 with smaller height is larger and can be pressed on the wall of the mounting hole 21 along the radial direction of the mounting hole 21, on the other hand, the material of the bending section 130 can be reduced, and the lightweight design of the coupling adjusting sheet body 40 is facilitated.

Specifically, referring to fig. 3, the bending section 130 is at least partially concavely configured, and the second mounting portion 120 is integrally connected to the bottom of the bending section 130, so that the second mounting portion 120 protrudes from the outer periphery of the bending section 130 relative to the bending section 130 of the portion, and can abut against the lower end portion of the mounting hole 21. The second mounting portion 120 is not subjected to external force processing deformation, processing forming defects are avoided, the characteristics of the original material structure are maintained, the rigidity and strength of the second mounting portion 120 are maintained, and the limiting effect of the lower end portions of the second mounting portion 120 and the mounting holes 21 is improved. Meanwhile, compared with the fact that the second mounting portion 120 is bent outwards, the bending angle, the bending shape and even secondary bending are needed to be considered, the bending section 130 is concaved inwards by applying the stamping force, so that the concave can be naturally completed by one-step stamping, the shape and the angle are not needed to be considered, and the processing difficulty is reduced.

Optionally, the bending section 130 is at least partially concavely arranged, the first mounting portion 110 is integrally formed above the concave portion, the second mounting portion 120 is integrally formed below the concave portion, the bending section 130 is concavely formed by applying a punching force, the first mounting portion 110 and the second mounting portion 120 are processed at one time, and production efficiency is greatly improved.

Optionally, the bending section 130 has a through bending window 131, the bending window 131 is close to the concave position of the bending section 130, on one hand, the strength of the bending section 130 in the height direction Z is reduced, the bending operation is facilitated, on the other hand, the limitation of the concave part in the circumferential direction is eliminated for the bending section 130, the stamping concave operation is facilitated to be more labor-saving, on the other hand, the part of the bending section 130 below the bending window 131 forms a connecting part 133, and the connecting part 133 supports and is connected to the circumferential position of the second mounting part 120, so that the rigidity and strength of the second mounting part 120 are further improved.

In some embodiments, referring to fig. 5 and 6, one end of the first mounting portion 110 is connected to an end surface of the bending section 130 away from the coupling piece 200, and the other end of the first mounting portion 110 extends along a direction away from the bending section 130, so that the first mounting portion 110 is suspended, the bottom of the first mounting portion 110 is not blocked by the bending section 130, and the bottom of the first mounting portion 110 can be more freely and easily abutted against the upper end of the mounting hole 21, so as to facilitate mounting of the coupling adjustment sheet 40.

In some embodiments, referring to fig. 5 and 6, one end of the second mounting portion 120 is connected to an end surface of the bending section 130 away from the coupling piece 200, and the other end of the second mounting portion 120 extends along a direction away from the bending section 130, so that the second mounting portion 120 is suspended, the top of the second mounting portion 120 is not blocked by the bending section 130, and the top of the second mounting portion 120 can be more freely and easily abutted against the lower end of the mounting hole 21, so as to facilitate the mounting of the coupling adjustment sheet 40.

Further, in the rudiment flat sheet of the coupling adjustment sheet body 40, the coupling sheet 200 and the unfolding shape of the bending section 130 are directly punched out at one time, meanwhile, a notch is punched out at the tail end of the bending section 130, the bending section 130 is subjected to plastic bending or elastic bending, a first mounting part 110 is naturally formed on the upper part of the notch, a second mounting part 120 is naturally formed on the lower part of the notch, and the coupling adjustment sheet body 40 provided by the application can be obtained by only one punching, one plastic bending or one elastic bending.

In some embodiments, referring to fig. 8, the coupling adjustment sheet 40 has a first window penetrating through the bent section 130, one end of the first mounting portion 110 is connected to a sidewall of the first window, and the other end of the first mounting portion 110 extends outwards along a radial direction of the coupling adjustment sheet 40, so that on one hand, the first mounting portion 110 has rebound elasticity, can elastically clamp an upper end portion of the mounting hole 21, and is in adaptive elastic deformation fit with the mounting hole 21 with different apertures; on the one hand, the first installation portion 110 is located on the side wall of the bending section 130, so that the size of the coupling adjustment sheet body 40 in the height direction Z cannot be increased, the miniaturized design of the coupling adjustment sheet body 40 is facilitated, and on the other hand, the arrangement of the first window is beneficial to the light weight and conciseness of the coupling adjustment sheet body 40.

The first mounting portion 110 may be located on any side wall of the first window, which is not limited herein. Optionally, the first mounting portion 110 is located on an upper side wall of the first window, so that when the first mounting portion 110 abuts against an upper end portion of the mounting hole 21, an upward moment is applied to the first mounting portion 110, and the upper side wall of the first window can provide support for the first mounting portion 110, so that plastic deformation of the first mounting portion 110 is avoided, and the first mounting portion 110 can be pressed down on the upper end portion of the mounting hole 21 along the height direction Z.

Optionally, the area of the first mounting portion 110 is smaller than the area of the first window, so that the first mounting portion 110 is bent and formed integrally on the first window.

In some embodiments, referring to fig. 8, the coupling adjustment sheet 40 has a second window 132 penetrating the bending section 130, one end of the second mounting portion 120 is connected to a sidewall of the second window 132, and the other end of the second mounting portion 120 extends outward in a radial direction of the coupling adjustment sheet 40, so that on one hand, the second mounting portion 120 has rebound elasticity, and can elastically clamp a lower end portion of the mounting hole 21, and is in self-adaptive elastic deformation fit with the mounting hole 21 with different apertures; on the one hand, the second mounting portion 120 is located on the side wall of the bending section 130, so that the size of the coupling adjustment sheet body 40 in the height direction Z cannot be increased, the miniaturized design of the coupling adjustment sheet body 40 is facilitated, and on the other hand, the arrangement of the second window 132 is beneficial to the light weight and conciseness of the coupling adjustment sheet body 40.

The second mounting portion 120 may be located on any side wall of the second window 132, which is not limited herein. Alternatively, referring to fig. 8 and 9, the second mounting portion 120 is located on a lower side wall of the second window 132, so that when the second mounting portion 120 abuts against a lower end portion of the mounting hole 21, a downward moment is applied to the second mounting portion 120, and the lower side wall of the second window 132 can provide support for the second mounting portion 120, so that plastic deformation of the second mounting portion 120 is avoided, and the second mounting portion 120 can be pressed against the lower end portion of the mounting hole 21 in the height direction Z.

Optionally, the area of the second mounting portion 120 is smaller than the area of the first window, so that the second mounting portion 120 is bent and formed integrally on the first window.

In some embodiments, referring to fig. 5 and 8, the top surface of the first mounting portion 110 has a planar surface. The top surface of the first installation part 110 bears the externally applied pressing force during the assembly, so that the coupling adjustment sheet body 40 is assembled into the installation hole 21 from top to bottom, the plane stress area is large, the coupling adjustment sheet body 40 is stressed more uniformly during the pressing assembly, and the coupling adjustment sheet body 40 with a sheet structure is prevented from being damaged or the coupling adjustment sheet body 40 is prevented from being bent and unstable during the assembly.

In some embodiments, in conjunction with fig. 3, 5, and 7, the top surface of the coupling tab 200 has a planar surface. The top surface of the coupling piece 200 bears the externally applied pressing force during assembly, so that the coupling adjustment piece body 40 is assembled into the mounting hole 21 from top to bottom, the plane stress area is large, the coupling adjustment piece body 40 is more uniformly stressed during pressing assembly, and the coupling adjustment piece body 40 with a sheet-shaped structure is prevented from being damaged or the coupling adjustment piece body 40 is prevented from being bent and unstable during assembly.

In some embodiments, referring to fig. 1 and 2, the coupling sheet 200 is provided with a pressing portion 201 in a height direction Z, and a top surface of the first mounting portion 110 and a top surface of the pressing portion 201 are flush in the height direction Z. The top surface of the first mounting portion 110 and the top surface of the pressing portion 201 can bear the externally applied pressing force at the same time during assembly, so that the coupling adjustment sheet body 40 is assembled into the mounting hole 21 from top to bottom, the coupling adjustment sheet body 40 is more uniformly stressed during press assembly, and the coupling adjustment sheet body 40 with a sheet structure is prevented from being damaged or the coupling adjustment sheet body 40 is prevented from being bent and unstable during assembly.

In addition, the pressing part 201 is arranged, so that on one hand, a debugging tool can conveniently clamp the pressing part 201, and therefore the coupling adjusting sheet body 40 is driven to rotate, the coupling strength between the two resonance pieces 30 or the position for adjusting the transmission zero point in the passband can be adjusted, and the debugging operation of the coupling adjusting sheet body 40 is convenient; on the other hand, the operator or the assembling and disassembling tool can conveniently and positively separate the coupling adjustment sheet body 40 from the mounting hole 21 along the positive direction and the negative direction of the height direction Z by pulling up or pressing down the pressing part 201, so that the assembling and disassembling operation of the coupling adjustment sheet body 40 can be conveniently performed.

In some embodiments, referring to fig. 3, 5 and 8, the top surface of the first mounting portion 110 and the top surface of the coupling piece 200 are flush in the height direction Z. The top surface of the first mounting portion 110 and the top surface of the coupling piece 200 can bear the externally applied pressing force at the same time during assembly, so that the coupling adjustment sheet body 40 is assembled into the mounting hole 21 from top to bottom, the coupling adjustment sheet body 40 is more uniformly stressed during pressing assembly, and the coupling adjustment sheet body 40 with a sheet structure is prevented from being damaged or the coupling adjustment sheet body 40 is prevented from being bent and unstable during assembly.

In some embodiments, with reference to fig. 1, 3, 5, and 8, the coupling sheet 200 is planar. Thus, the coupling sheet 200 can be directly punched out of a flat sheet without bending operation, and the processing procedure of the coupling sheet 200 is simplified. Meanwhile, the projection area of the flat-plate-shaped coupling piece 200 in the thickness direction X is the largest and the projection area in the width direction Y is the smallest, so that the coupling area range between the two resonance pieces 30 is enlarged during the rotation of the coupling piece 200, and the debugging range of the coupling adjustment sheet body 40 is enlarged.

The coupling piece 200 may be made of a metal material, or may include a plastic sheet and a metal layer disposed on a surface of the plastic sheet, and the material of the coupling piece 200 is not limited in this application.

In one embodiment, the coupling tab 200 is made of sheet metal. Because the thermal expansion coefficient of the metal is far smaller than that of the plastic, compared with a plastic sheet body, the metal sheet body has small dimensional change when the temperature is changed, can better keep stable positions in high and low temperature environments, avoids the position change of the coupling sheet 200 as much as possible, further avoids jump of the index of the filter as much as possible, and ensures the stability of the index of the filter.

In the present application, the coupling adjustment sheet 40 is integrally formed, that is, the mounting sheet 100 and the coupling sheet 200 are integrally formed. Alternatively, the mounting plate 100 and the coupling plate 200 are a unitary metal sheet structure. The coupling adjusting sheet body 40 can be integrally formed through a stamping process, a casting process or an additive manufacturing process, so that rapid continuous automatic production can be realized, the production efficiency is improved, and the production cost is saved; the coupling adjustment sheet 40 may be integrally formed by machining.

In another embodiment, the coupling adjustment sheet 40 includes a plastic sheet and a metal layer disposed on a surface of the plastic sheet, and the mounting sheet 100 and the coupling sheet 200 are integrally injection molded, so that the consistency of the assembly positions between the coupling sheet 200 and the mounting sheet 100 including the bending section 130, the first mounting portion 110 and the second mounting portion 120 is guaranteed, the connection strength is high, the product index stability is improved, and the volume and the weight of the coupling adjustment sheet 40 and the filter are reduced. Compared with metal materials, the plastic sheet body has good plasticity, can be flexibly processed and manufactured by adopting modes such as hot processing, mechanical processing and the like, namely, the coupling adjustment sheet body 40 with various shapes can be manufactured by processing methods such as injection molding, extrusion, blow molding and the like, and the coupling adjustment sheet body 40 with various shapes can be manufactured by mechanical processing methods such as cutting, stamping, bending and the like, so that the manufacturing difficulty is greatly reduced.

Specifically, the plastic sheet corresponding to the coupling piece 200 does not affect the coupling area between the two resonant pieces 30, and does not specifically require the shape and size of the plastic sheet, so as to reduce the processing requirements and processing difficulty of the plastic sheet. The plastic sheet body can be in a plate-shaped structure with regular shapes, the specification types of the plastic sheet body are reduced, and metal layers with various shapes and areas can be formed on the surface of the plastic sheet body according to the actual coupling strength adjustment range. The metal layer is disposed on one side of the plastic sheet, or may be disposed on two opposite sides of the plastic sheet in the thickness direction X, or may be disposed on a side of the plastic sheet in the width direction Y, which is not limited herein. Based on this, the staff can set up the metal level of different shapes and area according to the coupling demand of different wave filters, does benefit to the commonality that improves the plastics lamellar body and the specificity of metal level.

Specifically, the metal layer is manufactured by additive manufacturing, physical vapor deposition, spraying, gluing or hot pressing on the surface of the plastic sheet. The deposition thickness of the metal layer can be precisely controlled by additive manufacturing, physical vapor deposition or spraying processes, and the size of the deposition thickness can be controlled to be in the micrometer scale. The bonding process can be used for sticking the metal layer which is processed and manufactured on the plastic sheet body after the shape and the size of the metal layer are qualified, so that the problem that the whole coupling adjustment sheet body 40 is scrapped due to the fact that the metal layer is directly processed on the plastic sheet body and the performance requirement is not met due to processing errors and the like is avoided, and the reject ratio is reduced.

Specifically, the surface of the plastic sheet corresponding to the first mounting portion 110, the second mounting portion 120, or the mounting piece 100 may be provided with or without a metal layer, which is not limited herein. When the surfaces of the plastic sheets corresponding to the first mounting portion 110 and the second mounting portion 120 are not provided with the metal layer, the first mounting portion 110 and the second mounting portion 120 are mounted in the mounting hole 21 in an insulating manner, so that the adjacent two resonators 30 can be coupled capacitively.

Optionally, the surfaces of the first mounting portion 110 and the second mounting portion 120 for contacting the wall of the mounting hole 21 are provided with diamond coating to make the surface smooth, improve wear resistance, improve the service life of the coupling adjustment sheet 40, and enhance the insulation arrangement between the mounting sheet 100 and the mounting hole 21.

Example two

In connection with fig. 10 and 11, a filter is provided. The filter includes a cavity 10, a cover 20, resonant members 30 and a coupling adjusting sheet 40 according to any one of the first embodiment, the number of the resonant members 30 is more than two, the more than two resonant members 30 are installed in the cavity 10, the cavity 10 has an opening 11, the cover 20 covers one end of the cavity 10 having the opening 11, the cover 20 has a mounting hole 21, the mounting sheet 100 rotatably clamps two ends of the mounting hole 21 through a clamping interval 140, the coupling sheet 200 is located between the two resonant members 30, and is used for adjusting coupling strength between the two resonant members 30 or for adjusting a position of a transmission zero in a pass band. The coupling adjusting sheet 40 may be rotatably mounted in the mounting hole 21 in an electrically conductive manner to couple the two resonant members 30, or may be rotatably mounted in the mounting hole 21 in an insulating manner to couple the two resonant members 30 capacitively.

The coupling piece 200 is located between the two resonant pieces 30, and the projected area of the coupling piece 200 on the connecting line of the two resonant pieces 30 is the coupling area of the two resonant pieces 30. Since the projected area of the coupling sheet 200 in the thickness direction X is larger than the projected area of the coupling sheet 200 in the width direction Y, i.e., the projected areas of the coupling sheet 200 in different directions are different. Thus, when the coupling adjusting sheet 40 rotates, the coupling sheet 200 rotates along with the rotation, and the coupling area between the two resonant members 30 changes, so as to adjust the coupling strength between the two resonant members 30 or adjust the position of the transmission zero point in the passband. In addition, the coupling adjustment sheet body 40 is integrally formed, so that the coupling adjustment sheet body is strong in integrity, the number of parts and assembly operation are reduced, the connection reliability is high, the assembly consistency is high, the sheet structure simplifies the integral forming process, the qualification rate of integral forming manufacture is improved, the manufacturing precision of the integral forming process is improved, and the coupling adjustment sheet body 40 is compact in structure and beneficial to miniaturization and light-weight design of the coupling adjustment sheet body 40 and a filter.

In some embodiments, in combination with fig. 1, 3, 5 and 8, compared with the conventional coupling adjustment structure, the mounting piece 100 of the coupling adjustment sheet 40 provided in the application needs to be specially provided with an operation bump or an operation groove for clamping by a debugging device, the mounting piece 100 of the coupling adjustment sheet 40 abuts against two ends of the mounting hole 21 through the first mounting part 110 and the second mounting part 120, a space is formed between the first mounting part 110 and the coupling piece 200, the mounting hole 21 of the cover plate 20 is not sealed, the debugging device can conveniently enter the space formed between the first mounting part 110 and the coupling piece 200, and the coupling adjustment sheet 40 is pressed and pushed to rotate, so that the debugging operation of the filter is conveniently performed, and no additional operation bump or operation groove is required to be provided.

Optionally, after the filter is tuned, a metal film, such as tin foil, is covered on the outer side wall of the cover plate 20, so as to further prevent signal leakage inside the cavity 10.

In some embodiments, referring to fig. 1, 3 and 5, when the first mounting portion 110 abuts against the upper end surface of the mounting hole 21, the bending section 130 is not higher than the upper end surface of the mounting hole 21, so that products such as a filter and the like can be ensured to be concise and attractive on one side of the cover plate 20, impact on product indexes due to collision between the products such as the filter and other structures can be basically avoided when the products such as the filter and the like are assembled with other structures, and the overall height of the products such as the filter and the like can be reduced.

In some embodiments, referring to fig. 10 and 11, a plurality of resonance elements 30 are sequentially coupled to form a signal main channel, and the coupling strength between two adjacent resonance elements 30 located on the signal main channel may be adjusted by a coupling adjustment sheet 40, or coupling may be achieved by an air gap, a coupling rib, or the like, that is, the coupling adjustment sheet 40 may be disposed between two adjacent resonance elements 30, or the coupling adjustment sheet 40 may not be disposed, which is not limited herein.

For example, referring to fig. 11, ten sequentially coupled resonator elements 30 are installed in the cavity 10, an external radio frequency signal is coupled to a first resonator element 30 and sequentially transmitted to a tenth resonator element 30 to implement filtering, and then transmitted to the outside of the cavity 10 through the tenth resonator element 30, the number of the coupling adjustment elements 40 is nine, the first coupling adjustment element 40a is located between the first resonator element 30 and the second resonator element 30, the second coupling adjustment element 40b is located between the second resonator element 30 and the third resonator element 30, the third coupling adjustment element 40c is located between the third resonator element 30 and the fourth resonator element 30, the fourth coupling adjustment element 40d is located between the fourth resonator element 30 and the fifth resonator element 30, the fifth coupling adjustment element 40e is located between the fifth resonator element 30 and the sixth resonator element 30, the sixth coupling adjustment element 40f is located between the sixth resonator element 30 and the seventh resonator element 30, the seventh coupling adjustment element 40g is located between the seventh resonator element 30 and the eighth resonator element 30, the eighth coupling adjustment element 40g is located between the eighth resonator element 30 and the ninth resonator element 30, and the eighth resonator element 40h is located between the ninth resonator element 30 and the ninth resonator element 30. It will be appreciated that in other embodiments, the coupling adjustment sheet 40 may be disposed between two non-adjacent resonators 30 on the signal main channel to form cross coupling, so as to generate a transmission zero in the passband, for example, the coupling adjustment sheet 40 is disposed between the second resonator 30 and the fifth resonator 30, and the coupling adjustment sheet 40 is disposed between the seventh resonator 30 and the ninth resonator 30, which will not be described herein.

In this embodiment, referring to fig. 2, 4, 6 and 9, the first mounting portion 110 and the second mounting portion 120 are rotatably mounted by clamping two ends of the mounting hole 21, instead of rotatably mounting in the mounting hole 21 by threaded connection, that is, the mounting hole 21 does not need to be tapped, so that the processing difficulty and precision requirements of the cover plate 20 can be effectively simplified, the processing cost of the cover plate 20 can be effectively reduced, and the processing efficiency of the cover plate 20 can be effectively improved. In addition, when the coupling adjustment sheet 40 of the present embodiment rotates relative to the mounting hole 21, the risk of scraping the hole wall of the mounting hole 21 and generating burrs, chips and the like to fall into the cavity 10 can be reduced or even substantially avoided, so that intermodulation and power performance of the filter can be effectively ensured and improved.

In some embodiments, referring to fig. 2, the height of the clamping space 140 formed by the first mounting portion 110 and the second mounting portion 120 is 90% -120% of the thickness of the mounting hole 21, so that the first mounting portion 110 and the second mounting portion 120 can clamp, just clamp or interference clamp two ends of the mounting hole 21, ensuring that the coupling adjustment sheet 40 is stably mounted in the mounting hole 21, and reducing the precision required by the spacing between the first mounting portion 110 and the second mounting portion 120.

The thickness of the mounting hole 21 refers to the dimension distance of the mounting hole 21 in the height direction Z, that is, the distance from the upper orifice of the mounting hole 21 to the lower orifice of the mounting hole 21.

In an embodiment, referring to fig. 2, the first mounting portion 110 and the second mounting portion 120 forming the clamping space 140 are used for interference clamping fit with two ends of the mounting hole 21, and the height of the clamping space 140 is smaller than the thickness of the mounting hole 21, so that after the first mounting portion 110 and the second mounting portion 120 abut against the upper end and the lower end of the mounting hole 21, the first mounting portion 110 and the second mounting portion 120 can be elastically deformed, so that two ends of the mounting hole 21 can be clamped more reliably, the mounting stability of the coupling adjustment sheet 40 at the mounting hole 21 can be improved, the position stability of the coupling adjustment sheet 40 can be further improved, and the index of the filter after debugging can be avoided from being greatly changed as much as possible.

In some embodiments, referring to fig. 2, fig. 4 and fig. 9, the first mounting portion 110 and the second mounting portion 120 are respectively connected to the top and the bottom of the bending section 130, and the outer sidewall of the bending section 130 between the first mounting portion 110 and the second mounting portion 120 is abutted against the hole wall of the mounting hole 21, so that on one hand, the limit of the bending section 130 on the radial direction of the mounting hole 21 is realized, the coupling adjustment sheet 40 is prevented from moving along the radial direction of the mounting hole 21, the mounting stability and the position stability can be ensured, the product index is prevented from changing due to moving, and on the other hand, the contact area and the supporting force between the bending section 130 and the mounting hole 21 are enhanced, so that the coupling adjustment sheet 40 is stably and rotatably mounted in the mounting hole 21.

Optionally, the hole wall of the mounting hole 21 is a convolute surface, such as a cylindrical inner wall, a conical inner wall, a truncated cone-shaped inner wall, a stepped inner wall, and the like, and the outer side wall of the bending section 130 between the first mounting portion 110 and the second mounting portion 120 is an arc surface, and the arc surface is attached to the hole wall of the mounting hole 21, so as to maximize the contact area, further enhance the rotation stability of the coupling adjustment sheet 40, reduce the friction between the bending section 130 and the hole wall of the mounting hole 21, and further improve the rotation smoothness of the coupling adjustment sheet 40.

Optionally, the hole wall of the mounting hole 21 is an irregular circular wall, such as an elliptical wall, a polygonal wall or an irregular wall, and the outer side wall of the bending section 130 between the first mounting portion 110 and the second mounting portion 120 is an non-cambered surface, the outer side wall of the bending section 130 is in line contact or point contact with the hole wall of the mounting hole 21, so that the limiting of the bending section 130 in the radial direction of the mounting hole 21 is also realized, the coupling adjustment sheet 40 is prevented from moving along the radial direction of the mounting hole 21, and the hole wall of the mounting hole 21 provides a supporting force for the bending section 130, so that the coupling adjustment sheet 40 is stably and rotatably mounted in the mounting hole 21.

Alternatively, the wall of the mounting hole 21 is an irregular circular wall, such as an elliptical wall, a polygonal wall, or an irregular wall, and the outer side wall of the bending section 130 between the first mounting portion 110 and the second mounting portion 120 is a cambered surface, so long as the coupling adjustment sheet 40 is rotatably mounted in the mounting hole 21; alternatively, the hole wall of the mounting hole 21 is a convoluted surface, such as a cylindrical inner wall, a conical inner wall, a truncated cone-shaped inner wall, a stepped inner wall, or the like, and the outer side wall of the bent section 130 between the first mounting portion 110 and the second mounting portion 120 is an arc surface, so long as the coupling adjustment sheet 40 is rotatably mounted in the mounting hole 21.

It will be appreciated that in other embodiments, a gap is formed between the outer sidewall of the bending section 130 located between the first mounting portion 110 and the second mounting portion 120 and the wall of the mounting hole 21, and at this time, when the coupling adjustment sheet 40 is mounted in the mounting hole 21, the outer sidewall of the bending section 130 is not in contact with the wall of the mounting hole 21, and the bending section 130 is rotatably supported at two ends of the mounting hole 21 by the first mounting portion 110 and the second mounting portion 120, so that the rotation of the coupling adjustment sheet 40 is not affected.

In one embodiment, referring to fig. 2, 4 and 9, the first mounting portion 110 and the second mounting portion 120 abut against two ends of the mounting hole 21 in the height direction Z, and the bending section 130 between the first mounting portion 110 and the second mounting portion 120 is attached to the wall of the mounting hole 21, so that the supporting area of the cover 20 on the coupling adjustment sheet 40 is increased, and the mounting stability and the rotation stability of the coupling adjustment sheet 40 are improved.

Specifically, the mounting hole 21 is a smooth hole, the outer side wall of the bending section 130 between the first mounting portion 110 and the second mounting portion 120 is an arc surface, and the arc surface is attached to the smooth hole wall of the mounting hole 21, so that on one hand, radial movement of the coupling adjustment sheet body 40 along the mounting hole 21 is prevented, and on the other hand, mounting stability and position stability can be ensured, and on the other hand, friction between the bending section 130 and the hole wall of the mounting hole 21 is greatly reduced, and further, rotation resistance of the coupling adjustment sheet body 40 is reduced. Alternatively, the inner wall of the mounting hole 21 is a convolute surface, such as a cylindrical inner wall, a conical inner wall, a truncated cone-shaped inner wall, a stepped inner wall, or the like, to improve the smoothness of rotation.

In other embodiments, the first mounting portion 110 and the second mounting portion 120 abut against two ends of the mounting hole 21, and a space is provided between the bending section 130 between the first mounting portion 110 and the second mounting portion 120 and the wall of the mounting hole 21. Thus, the mounting hole 21 can be a unthreaded hole or have a certain roughness, and the mounting hole is not limited herein, and the rotation performance of the connecting sheet is not affected, so that the processing requirement and the processing difficulty of the mounting hole 21 are reduced.

Specifically, the inner wall of the mounting hole 21 may be a convolute surface, such as a cylindrical inner wall, a conical inner wall, a truncated cone-shaped inner wall, a stepped inner wall, etc., so that the contact areas of the first mounting portion 110 and the second mounting portion 120 with the end surface of the mounting hole 21 are kept consistent during rotation, and the stress is stable; the inner wall of the mounting hole 21 may be a non-convoluted surface, such as a hexagonal cross section, an elliptical cross section, or an irregular cross section, that is, the radius of the mounting hole 21 in different radial directions may be different, the contact area between the first mounting portion 110 and the second mounting portion 120 and the end surface of the mounting hole 21 is large when the first mounting portion 110 and the second mounting portion 120 rotate to the position where the radius of the mounting hole 21 is short, the contact area between the first mounting portion 110 and the second mounting portion 120 and the end surface of the mounting hole 21 is small when the first mounting portion 110 and the second mounting portion 120 rotate to the position where the radius of the mounting hole 21 is long, and the coupling adjustment sheet 40 may still be rotatably mounted in the mounting hole 21, so that the shape and size requirements and the machining precision requirements of the mounting hole 21 are further reduced.

In some embodiments, in conjunction with fig. 2, an end of the mounting hole 21 away from the cavity 10 is provided with a first chamfer 211, so that an orifice of the mounting hole 21 is enlarged to accommodate the first mounting portion 110, so that the coupling adjustment sheet body 40 is flush with or lower than an outer side surface of the cover plate 20, which can ensure that products such as a filter are concise and attractive on one side of the cover plate 20, can basically avoid impacting other structures to affect product indexes when the products such as the filter are assembled with other structures, can reduce the overall height of the products such as the filter, and can be beneficial to miniaturization and light weight of the products such as the filter. Meanwhile, the design of the first chamfer 211 can increase the contact area between the first mounting portion 110 and the end of the mounting hole 21, thereby being beneficial to improving the position stability of the coupling adjustment sheet 40, enhancing the guiding effect on the first mounting portion 110 and the second mounting portion 120, and facilitating the assembly and disassembly operations of the coupling adjustment sheet 40.

In some embodiments, referring to fig. 2, a second chamfer 212 is disposed at an end of the mounting hole 21 near the cavity 10, so as to enlarge an orifice of the mounting hole 21 for accommodating the second mounting portion 120, so that the second mounting portion 120 does not protrude from an inner side surface of the cover plate 20, and occupation of an inner space of the cavity 10 by the second mounting portion 120 is reduced. Meanwhile, the design of the second chamfer 212 can increase the contact area between the second mounting portion 120 and the end of the mounting hole 21, which is beneficial to improving the position stability of the coupling adjustment sheet 40.

Example III

Referring to fig. 12, the present application provides a method for manufacturing a coupling adjustment sheet 40, the method comprising the steps of:

s100: a metal sheet is provided, which has a coupling sheet blank and a mounting sheet blank, the mounting sheet blank being located on a side of the coupling sheet blank in the width direction Y of the coupling sheet blank.

S200: the first mounting portions 110 and the second mounting portions 120, which are spaced apart in the height direction Z, are punched out of the mounting sheet blank.

S300: the mounting sheet blank is bent around the height direction Z to form a bent section 130, and the first mounting portion 110 and the second mounting portion 120 are protruded from the outer periphery of the bent section 130.

Compared with the method of integrally casting, 3D printing or integrally injection molding and then arranging the metal layer, the method of the embodiment integrally punches the metal sheet to form the coupling adjusting sheet body 40, has simple processing equipment, reduces the manufacturing difficulty, improves the manufacturing efficiency, reduces the production of excess materials, is beneficial to improving the utilization rate of materials, and the metal sheet is strongly pressed through the punching process, so that the structural strength and stability of the coupling adjusting sheet body 40 can be effectively improved, and the index reliability of the coupling adjusting sheet body 40 is improved.

The coupling adjusting sheet body 40 is of an integral sheet body structure, so that the coupling adjusting sheet body is high in integrity, the number of parts and assembly operation are reduced, the connection reliability is high, the assembly consistency is high, the integral forming process is simplified by the sheet structure, the qualification rate of integral forming manufacture is improved, the manufacturing precision of the integral forming process is improved, and the coupling adjusting sheet body 40 is compact in structure and beneficial to miniaturization and light-weight design of the coupling adjusting sheet body 40 and a filter.

Wherein, the coupling adjustment sheet 40 clamps two ends of the mounting hole 21 of the cover plate 20 through the first mounting portion 110 and the second mounting portion 120, the first mounting portion 110 abuts against the end of the mounting hole 21 in the positive direction of the height direction Z, and the coupling adjustment sheet 40 is limited to move in the negative direction of the height direction Z under the action of no external pull-down force; the second mounting portion 120 abuts against the end portion of the mounting hole 21 in the negative direction of the height direction Z, under the action of no pull-up external force, the forward movement of the coupling adjustment sheet body 40 in the height direction Z is limited, the coupling adjustment sheet body 40 is prevented from being separated from the mounting hole 21 in the positive direction and the negative direction of the height direction Z, and the position of the coupling adjustment sheet body 40 in the height direction Z is stable. Meanwhile, the first mounting portion 110 and the second mounting portion 120 are abutted against two ends of the mounting hole 21, so that the supporting force of the cover plate 20 on the coupling adjustment sheet 40 is obtained, and the mounting stability is enhanced. Because the first mounting portion 110 and the second mounting portion 120 are abutted against two ends of the mounting hole 21, instead of being fixedly mounted on two ends of the mounting hole 21 by adopting a connection mode such as welding, fastening connection, clamping connection or bonding, the end portions of the mounting hole 21 are not provided with the protruding blocks for blocking the rotation of the first mounting portion 110 and the second mounting portion 120, so that the first mounting portion 110 and the second mounting portion 120 can rotate along the circumferential direction of the mounting hole 21 under the driving of an external force, and the coupling adjustment sheet body 40 can be rotatably arranged on the cover plate 20. The coupling piece 200 is made of metal, and the projection area of the coupling piece 200 in the thickness direction X is larger than the projection area of the coupling piece 200 in the width direction Y, so that the opposite areas of the coupling piece 200 and two adjacent resonant pieces 30 are changed in the rotation process, and the coupling strength between the two resonant pieces 30 is adjusted or the position of a transmission zero point in a pass band is adjusted.

In some embodiments, in step S100, the metal sheet is a flat sheet with a T-shape, and the shape is regular, and the metal sheet can be obtained by a blanking process, and the blanking has less excess material, which is beneficial to improving the utilization rate of materials. Meanwhile, the T-shaped metal sheet is convenient to transport, store and package.

Specifically, the transverse portion of the T-shaped metal sheet is punched out of the first mounting portion 110 and the second mounting portion 120, the transverse portion of the T-shaped metal sheet is elastically bent around the height direction Z to form the bent section 130, the vertical portion of the T-shaped metal sheet naturally forms the coupling sheet 200, and the T-shaped metal sheet is processed into the coupling adjustment sheet 40 only by one punching and one bending process, so that the processing convenience, the structural strength, the structural consistency and the assembling convenience of the coupling adjustment sheet 40 are greatly improved.

In other embodiments, in step S100, the initial shape of the metal sheet is a flat sheet of "7" shape, and the number of corresponding bending sections 130 is one.

In one embodiment, before the step of step S300, the method further includes the steps of:

s301: a through bending window 131 is punched in the mounting sheet blank, and the bending window 131 is located between the coupling sheet 200 and the predetermined positions of the first mounting portion 110 and the second mounting portion 120.

Since the mounting sheet 100 is elastically or plastically bent into a spatial three-dimensional structure after step S300, the first mounting portion 110, the second mounting portion 120, and the coupling sheet 200 are blocked in different directions of the bending section 130, and it is difficult to perform the punching process; before step S300, the blank of the coupling adjustment sheet 40 is substantially flat, and can be supported on the press mold in a flat manner, so that the support area is large, the punching operation is facilitated, and the molding quality of the bending window 131 is improved. In addition, the bending window 131 is beneficial to reducing the rigidity of the mounting sheet blank, and is beneficial to carrying out elastic bending or plastic bending forming on the mounting sheet blank in a labor-saving manner in the subsequent step S300 so as to reduce the process difficulty. In addition, when the bending section 130 is elastically bent around the height direction Z, the bending window 131 increases the resilience of the bending section 130, increasing the locking force of the coupling adjustment sheet 40 in the radial direction.

In one embodiment, step S301 may be performed synchronously in step S100. For example, the T-shaped metal sheet is processed by a punching and blanking process, and the bending window 131 is blanked in the lateral portion of the T-shaped metal sheet, thereby simplifying the production process of the coupling adjustment sheet 40, which is advantageous in improving the production efficiency. In another embodiment, step S301 may be performed synchronously in step S200. For example, the first mounting portion 110 and the second mounting portion 120, which are spaced apart in the height direction, are punched out on the mounting sheet blank and the bending window 131 are punched out by the same punching apparatus, thereby simplifying the production process of the coupling adjustment sheet body 40 and facilitating improvement of the production efficiency.

In one embodiment, step S300 includes:

s302: the mounting sheet blank is bent 160 DEG to 220 DEG around the height direction Z so that the end of the mounting sheet blank remote from the coupling sheet blank is located on one side in the thickness direction X of the coupling sheet blank.

In this way, the mounting piece 100 has a rebound property after being bent, so that the first mounting portion 110 and the second mounting portion 120 are pressed against the end portion of the mounting hole 21 along the radial direction of the mounting hole 21, thereby realizing the locking of the coupling adjustment sheet 40 in the radial direction of the mounting hole 21 and improving the positional stability of the coupling adjustment sheet 40 in the radial direction. And the bending angle is 160-220 degrees, on one hand, the bending angle is large, the bending difficulty is reduced, the forming is easy after bending, the rebound and restoration caused by too small angle are avoided, on the other hand, the tail ends of the mounting sheet embryonic form are distributed approximately in parallel with the coupling sheet embryonic form along the thickness direction X after bending, so that the tail ends of the mounting sheets 100 and the coupling sheets 200 can abut against the mounting holes 21 along the radial direction of the mounting holes 21 to obtain supporting force, or when the number of the mounting sheets 100 is two, the tail ends of the two mounting sheets 100 are positioned at two sides of the thickness direction X of the coupling sheets 200 and encircle the protective coupling sheets 200.

In one embodiment, step S200 includes:

S210: referring to fig. 1 and 8, the top and/or bottom of the mounting sheet blank is provided with a sheet, and the sheet is bent to one side in the thickness direction X to form the first mounting portion 110 and/or the second mounting portion 120. That is, a plate may be protruded from the top of the mounting plate blank to be bent to form the first mounting portion 110; a plate may be protruded at the bottom of the mounting plate blank to be bent to form the second mounting portion 120; the top and bottom of the mounting sheet blank may be provided with a sheet protruding therefrom so as to be bent to form the first mounting portion 110 and the second mounting portion 120. Based on this, before step S300, the embryonic form of the coupling adjustment sheet 40 is substantially flat, can be supported on the stamping die in a planar manner, has a large supporting area, facilitates the bending process, reduces the difficulty in molding the first mounting portion 110 and the second mounting portion 120, and simultaneously can simultaneously process the first mounting portion 110 and the second mounting portion 120 at one time, thereby improving the production efficiency.

Wherein, the first installation department 110 and the second installation department 120 are through the shaping of bending, and the end of first installation department 110 and second installation department 120 is the free end for first installation department 110 and second installation department 120 have resilience elasticity, can the tip of elastic clamping mounting hole 21, and can the self-adaptation elastic deformation cooperation mounting hole 21 of different apertures.

In one embodiment, step S200 includes:

s220: referring to fig. 8, a window and a first mounting portion 110 and/or a second mounting portion 120 connected to a side wall of the window are punched in a mounting sheet blank, and the first mounting portion 110 and/or the second mounting portion 120 are punched and bent. Based on this, before step S300, the embryonic form of the coupling adjustment sheet 40 is substantially flat, and can be supported on the press die in a flat surface, so that the support area is large, which is advantageous for increasing the punching force and improving the molding quality of the window. In addition, the arrangement of the window is beneficial to the light weight and the simplification of the coupling adjustment sheet body 40, and is also beneficial to the fact that the first installation part 110 and/or the second installation part 120 can be arranged on the side wall of the window nearby, and is closer to the outer wall of the bending section 130, is easier to protrude out of the outer wall of the bending section 130, and reduces the stamping bending difficulty of the first installation part 110 and/or the second installation part 120.

Optionally, the spreading area of the first mounting portion 110 and/or the second mounting portion 120 is smaller than the area of the window, which is beneficial to reducing the size of the first mounting portion 110 and/or the second mounting portion 120, increasing the interval between the first mounting portion 110 and/or the second mounting portion 120 and the side wall of the window, and further facilitating the integral bending and forming of the first mounting portion 110 and/or the second mounting portion 120 on the window, and simplifying the processing technology of the first mounting portion 110 and/or the second mounting portion 120.

In one embodiment, step S200 includes:

s230: referring to fig. 3, the middle part of the mounting sheet blank in the height direction Z is concavely punched, so that the upper and lower parts of the mounting sheet blank in the concaved part form the first mounting part 110 and the second mounting part 120 respectively, the first mounting part 110 and the second mounting part 120 are processed at one time, and only one concave part 133 is required to be punched, so that two shapes of the first mounting part 110 and the second mounting part 120 can be formed, and the forming efficiency is improved. The inner recess 133 is recessed inward so that the first and second mounting portions 110 and 120 protrude from the outer circumference of the bent section 130, and can abut against the end of the mounting hole 21. In addition, the first mounting portion 110 and the second mounting portion 120 are not subjected to press deformation, and thus, the machining defect is avoided, and the rigidity and strength of the first mounting portion 110 and the second mounting portion 120 are maintained.

In one embodiment, step S200 includes:

s2340: referring to fig. 5, a notch is formed in the middle of the end of the mounting sheet blank in the height direction Z, so that the upper and lower parts of the mounting sheet blank, where the end is located in the notch, respectively form a first mounting part 110 and a second mounting part 120, the first mounting part 110 and the second mounting part 120 are formed at one time, and only one notch is required to be punched, so that two shapes of the first mounting part 110 and the second mounting part 120 can be formed, and the forming efficiency is improved. In addition, the first mounting portion 110 and the second mounting portion 120 are not subjected to press deformation, and thus, the machining defect is avoided, and the rigidity and strength of the first mounting portion 110 and the second mounting portion 120 are maintained.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims

1. A coupling adjustment blade, characterized in that: the coupling adjusting sheet body comprises an installation sheet and a coupling sheet, the coupling sheet is provided with a height direction, a thickness direction and a width direction which are perpendicular to each other, the projection area of the coupling sheet in the thickness direction is larger than the projection area of the coupling sheet in the width direction, the installation sheet comprises a bending section, a first installation part and a second installation part, the bending section is integrally formed and connected with the side part of the coupling sheet in the width direction, the first installation part and the second installation part are integrally formed and connected with the bending section, the first installation part and the second installation part are distributed at intervals along the height direction to form clamping intervals, and the first installation part is positioned above the second installation part.

2. The coupling adjustment blade of claim 1, wherein: the bending section is elastically bent around the height direction.

3. The coupling adjustment blade of claim 2, wherein: the bending section is wound into an arc shape or a spiral shape.

4. The coupling adjustment blade of claim 1, wherein: the coupling adjusting sheet body is provided with a bending window penetrating through the bending section; wherein the bending window is positioned between the coupling piece and the first mounting part, and/or the bending window is positioned between the coupling piece and the second mounting part.

5. The coupling adjustment blade of claim 1, wherein: projections of the first mounting portion and the second mounting portion in the height direction overlap.

6. The coupling adjustment blade of claim 1, wherein:

one side surface of the first installation part, which is close to the second installation part, is obliquely downwards arranged or horizontally arranged;

and/or the second mounting part is arranged obliquely upwards away from one side surface of the first mounting part.

7. The coupling adjustment blade of claim 1, further comprising one of:

one end of the first mounting part is connected to the top of the bending section, and the other end of the first mounting part extends outwards along the radial direction of the coupling adjusting sheet body;

The coupling adjusting sheet body is provided with a first window penetrating through the bending section, one end of the first mounting part is connected to the side wall of the first window, and the other end of the first mounting part extends outwards along the radial direction of the coupling adjusting sheet body;

one end of the first installation part is connected to the end face of one end of the bending section, which is far away from the coupling piece, and the other end of the first installation part extends along the direction far away from the bending section.

8. The coupling adjustment blade of claim 1, further comprising one of:

one end of the second installation part is connected to the bottom of the bending section, and the other end of the second installation part extends outwards along the radial direction of the coupling adjustment sheet body;

the coupling adjusting sheet body is provided with a second window penetrating through the bending section, one end of the second mounting part is connected to the side wall of the second window, and the other end of the second mounting part extends outwards along the radial direction of the coupling adjusting sheet body;

one end of the second installation part is connected to the end face of one end of the bending section, which is far away from the coupling piece, and the other end of the second installation part extends along the direction far away from the bending section.

9. The coupling adjustment blade of claim 1, wherein: the number of the bending sections is two, and the two bending sections are positioned at the top of the coupling piece and are positioned at two opposite sides of the coupling piece in the width direction.

10. The coupling adjustment blade of claim 1, wherein:

the top surface of the first mounting part is provided with a plane;

and/or the top surface of the coupling piece has a plane.

11. The coupling adjustment blade of any one of claims 1 to 10, characterized in that:

the top surface of the first mounting part and the top surface of the coupling piece are flush in the height direction;

alternatively, the coupling piece is provided with a pressing portion in the height direction, and the top surface of the first mounting portion and the top surface of the pressing portion are flush in the height direction.

12. A filter, characterized by: the filter comprises a cavity, a cover plate, resonant pieces and the coupling adjusting sheet body according to any one of claims 1 to 11, wherein the number of the resonant pieces is more than two, the resonant pieces are arranged in the cavity, the cavity is provided with an opening, the cover plate covers one end of the cavity with the opening, the cover plate is provided with a mounting hole, the mounting sheet rotatably clamps two ends of the mounting hole through the clamping interval, and the coupling sheet is positioned between the two resonant pieces.

13. The filter according to claim 12, wherein: the first installation part and the second installation part are respectively connected to the top and the bottom of the bending section, and the outer side wall of the bending section between the first installation part and the second installation part is abutted to the hole wall of the installation hole.

14. A method of manufacturing a coupling adjustment blade, the method comprising the steps of:

15. The method of manufacturing a coupling adjustment sheet according to claim 14, further comprising, before the step of bending the mounting sheet blank around the height direction to form a bent section, the steps of:

Punching a through bending window on the mounting plate blank, wherein the bending window is positioned between the preset positions of the first mounting part and the second mounting part and the coupling plate.

16. The method of manufacturing a coupling adjustment sheet according to claim 14 or 15, wherein the step of punching out the first mounting portions and the second mounting portions, which are spaced apart in the height direction, on the mounting sheet blank includes one of:

the top and/or the bottom of the installation sheet embryonic form is provided with a sheet convexly, and the sheet is bent towards one side in the thickness direction to form a first installation part and/or a second installation part;

punching a window and a first mounting part and/or a second mounting part connected to the side wall of the window in the mounting plate blank, and punching and bending the first mounting part and/or the second mounting part;

the middle part of the mounting sheet blank in the height direction is concavely punched, so that the upper part and the lower part of the mounting sheet blank in the concave part form the first mounting part and the second mounting part respectively;

and a notch is processed in the middle of the tail end of the mounting sheet prototype in the height direction, so that the first mounting part and the second mounting part are respectively formed by the upper part and the lower part of the tail end of the mounting sheet prototype in the notch.