Cover plate assembly and filter

Abstract

The cover plate assembly comprises a cover plate, a deformation part, an annular driving piece and an inner side deformation driving piece, the cover plate can cover a cavity structure to form the filter, the deformation part is fixedly connected to the cover plate, and the thickness of the deformation part is smaller than that of the cover plate, so that the deformation part is easy to deform under external stress; the annular driving piece and the inner side deformation driving piece are both connected with the deformation part, the inner side deformation driving piece is located on the inner side of the annular driving piece, when the filter is debugged, the filter drives the outer side of the deformation part to deform through the annular driving piece and / or the inner side of the deformation part to deform through the inner side deformation driving piece, and frequency modulation of the filter is achieved. In the frequency modulation process, no metal chippings fall into the sealed cavity to influence the frequency modulation of the filter, and convenience is provided for the frequency modulation of the filter.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter technical field, concretely relates to cover plate subassembly and filter. BACKGROUND

[0002] As a kind of frequency selection device, filter is widely used in communication field, for selecting communication signal, filter out the noise or interference signal outside communication signal frequency;Filter is extremely widely used, including but not limited to communication field, manufacturing field, image processing field etc.

[0003] As the patent file disclosed in the publication No.CN203466273U cavity filter, cavity filter includes cavity, cover plate, resonant rod and adjusting screw, cover plate is covered and arranged on cavity, resonant rod is arranged in cavity, adjusting screw is screw-connected in cover plate and passes through cover plate, the lower end of adjusting screw extends to the inside of resonant rod, by screwing adjusting screw, the length of adjusting screw entering resonant rod can be debugged to filter.

[0004] Although the frequency of filter can be realized by adjusting screw, metal scrap is easily formed in frequency adjustment process, the metal scrap is easily fallen into cavity interior, and the frequency of filter is influenced. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming above-mentioned technical shortage, proposes a kind of cover plate subassembly and filter, solves the technical problem that the filter of prior art in frequency adjustment process, metal scrap is easily fallen into cavity interior, influences the frequency of filter.

[0006] To achieve the above technical purpose, the utility model takes the following technical scheme:

[0007] Firstly, the utility model provides a kind of cover plate subassembly, comprising:

[0008] Cover plate;

[0009] Deformation part, fixedly connected to the cover plate;

[0010] Annular driving part, connected to the deformation part, for driving the outside of the deformation part to deform;And

[0011] Inside deformation driving part, located at the inside of annular driving part and connect the deformation part, for driving the inside of the deformation part to deform.

[0012] In some embodiments, the annular driving part is screw-connected with the cover plate.

[0013] In some embodiments, the annular driving part is in abutment with the deformation part, to drive the deformation part to deform towards first direction by pressing the deformation part.

[0014] In some embodiments, the inner side deformation driving member is fixedly connected to the deformation portion for driving the deformation portion to deform towards a second direction opposite to the first direction.

[0015] In some embodiments, the deformation portion has a connecting platform on a side close to the inner side deformation driving member, and the inner side deformation driving member is connected to the connecting platform.

[0016] In some embodiments, the deformation portion is provided with a connecting hole, and the inner side deformation driving member is connected to the connecting hole.

[0017] In some embodiments, the inner side deformation driving member is threadedly connected to the connecting hole, and the inner side deformation driving member is provided with a limiting boss on a side away from the deformation portion and abutting against the annular driving member through movement of the inner side deformation driving member towards the deformation portion.

[0018] In some embodiments, the annular driving member is provided with a limiting hole penetrating through an inner side, and the inner side deformation driving member penetrates through the limiting hole.

[0019] In some embodiments, the cover plate is provided with a connecting seat, and the annular driving member is connected to the connecting seat.

[0020] In a second aspect, the utility model also provides a filter which comprises a cavity, a resonator and the cover plate assembly.

[0021] Compared with the prior art, the cover plate assembly provided by the utility model is provided with a cover plate, a deformation portion, an annular driving member and an inner side deformation driving member, the cover plate can be covered on a cavity structure to form a filter, the deformation portion is fixedly connected to the cover plate, the thickness of the deformation portion is relatively thin compared with the cover plate, so that the deformation portion is easy to deform under external force, the annular driving member and the inner side deformation driving member are both connected to the deformation portion, and the inner side deformation driving member is located on the inner side of the annular driving member, when the filter is debugged, the filter drives the outer side of the deformation portion to deform through the annular driving member and / or drives the inner side of the deformation portion to deform through the inner side deformation driving member, frequency adjustment of the filter is realized, since the frequency adjustment of the filter is realized by driving the outer side of the deformation portion to deform through the annular driving member and / or driving the inner side of the deformation portion to deform through the inner side deformation driving member, so that no metal debris falls into the sealed cavity during the frequency adjustment, thereby affecting the frequency adjustment of the filter, and the frequency adjustment of the filter is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structural schematic view of the cover plate assembly provided by the utility model embodiment;

[0023] Figure 2is a front view of the cover plate assembly provided by the embodiment of the utility model;

[0024] Figure 3 is along Figure 2 the section view of A-A line in figure;

[0025] Figure 4 is the structure schematic view of the filter provided by the embodiment of the utility model;

[0026] Figure 5 is the front view of the filter provided by the embodiment of the utility model;

[0027] Figure 6 is along Figure 5 the section view of A-A line in figure.

[0028] Reference numerals in the figure:

[0029] 10 - cover plate 11 - connecting seat 20 - deformation part

[0030] 21 - connecting table 22 - connecting hole 30 - annular driving part

[0031] 31 - limiting hole 40 - inner side deformation driving part 41 - limiting boss

[0032] 50 - cavity 60 - resonator. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following is combined with the figure and embodiment, and the utility model is further described in detail.It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0034] In order to solve the technical problem that the filter in the prior art is prone to causing metal debris to fall into the cavity during frequency modulation, affecting the frequency modulation of the filter, the embodiment of the utility model provides a cover plate assembly, which drives the deformation of the cover plate for frequency modulation of the filter, thereby avoiding the formation of metal debris during frequency modulation, to facilitate the frequency modulation of the filter.

[0035] It should be noted that the cover plate assembly described in the utility model is used for but not limited to cavity filter and the like, in order to facilitate the description, in the utility model, only the cover plate assembly is applied to the cavity filter as an example for description, and the principle of the cover plate assembly applied to other types of equipment is substantially the same as that applied to the cavity filter, which is not described one by one here.

[0036] The cover plate assembly provided by the embodiment of the utility model, such as Figures 1-6As shown, the cover plate assembly comprises a cover plate 10, a deformation part 20, a ring-shaped driving member 30 and an inner-side deformation driving member 40; the deformation part 20 is fixedly connected to the cover plate 10; the ring-shaped driving member 30 is connected to the deformation part 20 and is used to drive the deformation of the outer side of the deformation part 20; and the inner-side deformation driving member 40 is located at the inner side of the ring-shaped driving member 30 and is connected to the deformation part 20 and is used to drive the deformation of the inner side of the deformation part 20.

[0037] Specifically, the cover plate assembly is provided with the cover plate 10, the deformation part 20, the ring-shaped driving member 30 and the inner-side deformation driving member 40; the cover plate 10 can be arranged on the cavity 50 to form a filter; the deformation part 20 is fixedly connected to the cover plate 10 and has a smaller thickness than the cover plate 10, so that the deformation part 20 is easy to deform under external force; the ring-shaped driving member 30 and the inner-side deformation driving member 40 are both connected to the deformation part 20, and the inner-side deformation driving member 40 is located at the inner side of the ring-shaped driving member 30; when the filter is debugged, the filter is driven to deform the outer side of the deformation part 20 by the ring-shaped driving member 30 and / or to deform the inner side of the deformation part 20 by the inner-side deformation driving member 40, so that the frequency of the filter is adjusted; since the frequency of the filter is adjusted by driving the deformation of the outer side of the deformation part 20 by the ring-shaped driving member 30 and / or driving the deformation of the inner side of the deformation part 20 by the inner-side deformation driving member 40, no metal debris will fall into the sealed cavity 50 during the frequency adjustment, so as to affect the frequency adjustment of the filter and provide convenience for the frequency adjustment of the filter.

[0038] It can be understood that the filter can be debugged by driving the deformation of the outer side of the deformation part 20 by the ring-shaped driving member 30, or by driving the deformation of the inner side of the deformation part 20 by the inner-side deformation driving member 40, or by driving the deformation of the inner and outer sides of the deformation part 20 by the ring-shaped driving member 30 and the inner-side deformation driving member 40.

[0039] It can be understood that the driving directions of the ring-shaped driving member 30 and the inner-side deformation driving member 40 can be adaptively set according to actual debugging requirements.

[0040] In this embodiment, the ring-shaped driving member 30 has a ring-shaped structure and is connected to the deformation part 20, so as to drive the deformation of the ring-shaped area of the deformation part 20, which is the outer side of the deformation part 20; the inner-side deformation driving member 40 is located at the inner side of the ring-shaped driving member 30 and can drive the deformation of a certain area at the inner side of the ring-shaped area, which is the inner side of the deformation part 20.

[0041] In the embodiment, the annular driving member 30 is mainly used to drive the outer side of the deformation portion 20 to deform towards the inner side of the filter cavity 50, and the inner side deformation driving member 40 is mainly used to drive the inner side of the deformation portion 20 to deform towards the outer side of the filter cavity 50. During the adjustment process of the filter, first, the outer side of the deformation portion 20 is deformed by the annular driving member 30 to adjust the filter. If the adjustment is excessive, the inner side of the deformation portion 20 is deformed by the inner side deformation driving member 40 to correct the excessive adjustment of the annular driving member 30. After the annular driving member 30 and the inner side deformation driving member 40 drive the deformation portion 20 to deform simultaneously, a wave-shaped deformation structure is formed at the deformation portion 20. The wave-shaped deformation structure formed by adjustment is smooth and continuous without sharp points, which has a smaller impact on power and electromagnetic coupling with the top surface of the resonator 60.

[0042] In the embodiment, the cover plate 10 has strong plasticity, weak elasticity, and good ductility.

[0043] It can be understood that the deformation portion 20 can be fixed to the cover plate 10 in any connection form such as welding or bolt fixing.

[0044] In the embodiment, the deformation portion 20 is integrally formed with the cover plate 10 and is a thinned circular region formed on the cover plate 10. The thickness of the region is smaller than that of other regions on the cover plate 10, so that the region is easier to deform than other regions on the cover plate 10.

[0045] It can be understood that the annular driving member 30 can be connected to the deformation portion 20 in any connection form such as rotating connection or fixed connection, as long as it can drive the deformation of the deformation portion 20.

[0046] In one of the embodiments, as shown in Figure 3 and 6 , the annular driving member 30 abuts against the deformation portion 20 to drive the deformation portion 20 to deform in the first direction by pressing the deformation portion 20. Specifically, by abutting the annular driving member 30 against the deformation portion 20, during the adjustment process of the filter, only the annular driving member 30 needs to be controlled to press the deformation portion 20, so as to drive the deformation portion 20 to deform, thereby realizing the adjustment of the filter.

[0047] In the embodiment, the first direction is the direction towards the inner side of the cavity 50, and the deformation in the direction can be realized only by pressing the deformation portion 20.

[0048] In one of the embodiments, as shown in Figure 3 and 6As shown, the annular drive member 30 is threadedly connected to the cover plate 10. Specifically, by connecting the annular drive member 30 to the cover plate 10 via the threaded connection, during the filter debugging process, it is only necessary to turn the annular drive member 30 to move axially toward the deformation part 20, thereby causing the deformation part 20 to deform.

[0049] In one embodiment, such as Figures 1-6 As shown, the cover plate 10 is provided with a connecting seat 11, and the annular drive member 30 is connected to the connecting seat 11. Specifically, the connecting seat 11 allows the annular drive member 30 to be connected, ensuring the stability of the connection between the annular drive member 30 and the cover plate 10.

[0050] In this embodiment, as Figure 4 As shown, the connecting seat 11 is fixed to the cover plate 10 by bolts.

[0051] In this embodiment, as Figure 3 and 6 As shown, the annular drive component 30 has an annular cylindrical structure and is threadedly connected to the connecting seat 11.

[0052] In one embodiment, such as Figure 3 and 6 As shown, the inner side of the annular drive member 30 is provided with a through limiting hole 31, and the inner deformation drive member 40 passes through the limiting hole 31. Specifically, the limiting hole 31 can limit the radial direction of the inner deformation drive member 40, thereby ensuring the stability of the inner deformation drive member 40.

[0053] Understandably, the inner deformation drive component 40 can be connected to the deformation part 20 in any form, such as rotatable connection or fixed connection, as long as it can drive the deformation part 20 to deform.

[0054] In one embodiment, such as Figure 3 and 6 As shown, the inner deformation drive member 40 is fixedly connected to the deformation part 20 and is used to drive the deformation part 20 to deform in a second direction, which is opposite to the first direction. Specifically, the first direction is the direction towards the inside of the cavity 50, and the second direction is the opposite of the first direction, which is the direction towards the outside of the cavity 50. In order to achieve the deformation of the deformation part 20 in the second direction, the inner deformation drive member 40 needs to be fixedly connected to the deformation part 20 so that the deformation part 20 can be driven to deform. Combined with the annular drive member 30, the deformation of the inner and outer sides of the deformation part 20 in different directions can be achieved.

[0055] In one embodiment, such as Figure 3 and 6As shown in the drawings, the deformation part 20 is provided with a connecting table 21 on the side close to the inner side deformation driving part 40, and the inner side deformation driving part 40 is connected to the connecting table 21. Specifically, the connecting table 21 is connected to the inner side deformation driving part 40, so that the inner side deformation driving part 40 drives the deformation part 20 to deform through the connecting table 21, so that the deformation of the deformation part 20 is more smooth and regular.

[0056] In this embodiment, the connecting table 21 is a circular ring type table.

[0057] As can be understood, the inner side deformation driving part 40 can be fixed to the connecting table 21 by welding, bolt connection and the like.

[0058] In one embodiment, as shown in Figure 3 and 6 , the deformation part 20 is provided with a connecting hole 22, and the inner side deformation driving part 40 is connected to the connecting hole 22. Specifically, the inner side deformation driving part 40 is connected to the connecting hole 22 to realize stable connection with the connecting table 21.

[0059] In this embodiment, the connecting hole 22 is arranged on the inner side of the connecting table 21.

[0060] As can be understood, the inner side deformation driving part 40 can drive the deformation part 20 to deform by manual control of the upward pulling action.

[0061] In this embodiment, as shown in Figures 1-6 , the inner side deformation driving part 40 is a screw rod.

[0062] In one embodiment, as shown in Figures 1-6 , the inner side deformation driving part 40 is threadedly connected with the connecting hole 22, and the inner side deformation driving part 40 has a limiting boss 41 located on the side of the annular driving part 30 away from the deformation part 20 and can be abutted with the annular driving part 30 by moving the inner side deformation driving part 40 towards the deformation part 20. Specifically, by screwing the inner side deformation driving part 40, the inner side deformation driving part 40 will move towards the inner side of the cavity 50 until the limiting boss 41 abuts with the annular driving part 30, and since the annular driving part 30 is fixed, the inner side deformation driving part 40 will form a reverse force on one end of the deformation part 20 through the threaded connection, and pull the deformation part 20 upward, thereby driving the deformation part 20 to deform towards the outer side of the cavity 50.

[0063] In this embodiment, the limiting boss 41 is a shoulder integrally formed on the inner side deformation driving part 40.

[0064] In the embodiment, during the debugging process of the filter, the annular driving member 30 is twisted first to move the annular driving member 30 away from the limiting boss 41, drive the outer side of the deformation part 20 to deform towards the inner side of the cavity 50, and if the deformation is excessive, the inner side deformation driving member 40 is twisted again to drive the inner side of the deformation part 20 to deform towards the outer side of the cavity 50, so as to realize the accurate debugging of the filter. Since the filter is first deformed by the driving of the annular driving member 30 to control the deformation of the outer side of the deformation part 20, during the control of the annular driving member 30, the annular driving member 30 moves away from the limiting boss 41, at this time, the limiting boss 41 is separated from the annular driving member 30, when the inner side deformation driving member 40 is twisted, the inner side deformation driving member 40 is first axially moved to abut the limiting boss 41 with the annular driving member 30, and then the inner side of the deformation part 20 is deformed.

[0065] In the embodiment, the metal debris formed during the twisting of the inner side deformation driving member 40 falls in the inside of the connecting hole 22, and does not fall in the cavity 50.

[0066] The utility model discloses still provide a kind of filter, as shown in figure, including cavity 50, resonator 60 and the cover plate assembly described, cover plate 10 cover is located in cavity 50. Figures 4-6 Specifically, the filter is provided with the cover plate assembly, so that the frequency modulation of the filter is realized by the deformation of the outer side of the deformation part 20 driven by the inner annular driving member 30 and / or the deformation of the inner side of the deformation part 20 driven by the inner side deformation driving member 40, so that no metal debris falls into the sealed cavity 50 during the frequency modulation to affect the frequency modulation of the filter, thereby facilitating the frequency modulation of the filter.

[0067] In the embodiment, the annular driving member 30 is mainly used to drive the outer side of the deformation part 20 to deform towards the inner side of the filter cavity 50, and the inner side deformation driving member 40 is mainly used to drive the inner side of the deformation part 20 to deform towards the outer side of the filter cavity 50. During the debugging process of the filter, the annular driving member 30 is twisted first to move the annular driving member 30 away from the limiting boss 41, drive the outer side of the deformation part 20 to deform towards the inner side of the cavity 50, and if the deformation is excessive, the inner side deformation driving member 40 is twisted again to drive the inner side of the deformation part 20 to deform towards the outer side of the cavity 50, so as to realize the accurate debugging of the filter.

[0068] The specific implementation of the utility model described above does not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A cover assembly, characterized by The application relates to a cover plate assembly, comprising: a cover plate; a deformation part fixedly connected to the cover plate; a ring-shaped driving part connected to the deformation part and used for driving the deformation of the deformation part; and an inner-side deformation driving part located at the inner side of the ring-shaped driving part and connected to the deformation part and used for driving the deformation of the deformation part. The ring-shaped driving part is screwed to the cover plate.

2. The cover plate assembly of claim 1, wherein, The ring-shaped driving part abuts against the deformation part to drive the deformation of the deformation part towards a first direction by pressing the deformation part.

3. The cover plate assembly of claim 1, wherein, The inner-side deformation driving part is fixedly connected to the deformation part and used for driving the deformation of the deformation part towards a second direction, which is opposite to the first direction.

4. The cover plate assembly of claim 3, wherein, The side of the deformation part close to the inner-side deformation driving part is provided with a connecting platform, and the inner-side deformation driving part is connected to the connecting platform.

5. The cover plate assembly of claim 1, wherein, The deformation part is provided with a connecting hole, and the inner-side deformation driving part is connected to the connecting hole.

6. The cover plate assembly of claim 5, wherein, The inner-side deformation driving part is screwed to the connecting hole, and the inner-side deformation driving part is provided with a limiting boss located at the side of the ring-shaped driving part away from the deformation part and capable of abutting against the ring-shaped driving part through the movement of the inner-side deformation driving part towards the deformation part.

7. The cover plate assembly of claim 6, wherein, The inner side of the ring-shaped driving part is provided with a limiting hole through which the inner-side deformation driving part passes.

8. The cover plate assembly of any one of claims 1-7, wherein, The cover plate is provided with a connecting seat, and the ring-shaped driving part is connected to the connecting seat.

9. The cover plate assembly of any one of claims 1-7, wherein, The application further relates to a cavity, a resonator and the cover plate assembly.

10. A filter, characterized by, ​

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