An active cover plate for a communication cavity filter

Abstract

The utility model discloses a movable cover plate of communication cavity filter, including cover plate main part, and set up the tuning screw on cover plate main part, be provided with the protective shell on cover plate main part, the protective shell cover on cover plate main part, and the tuning screw is in the protective shell inside. The utility model discloses through the mutual cooperation of cover plate main part, tuning screw, protective shell, heat dissipation mouth, fin no.

Description

Technical Field

[0001] This utility model relates to the field of cavity filter technology, specifically to a movable cover plate for a communication cavity filter. Background Technology

[0002] Cavity filters are microwave devices that use the electromagnetic resonance characteristics of a metal cavity to filter signals. They are widely used in radio frequency communication systems. The movable cover is one of the key components of a cavity filter. It is mainly used to cover the filter housing and facilitate tuning operations. Currently, the movable cover of existing cavity filters does not have a protective mechanism, and the operating parts of the tuning screw are exposed to the outside. This makes it easy for the filter to collide with external objects, which can lead to misoperation and affect the use of the cavity filter.

[0003] A search revealed a cavity filter and a cavity filter cover plate with publication number CN202282436U, comprising: a cavity and a cover plate covering the cavity, wherein the cover plate is provided with a connector outer conductor and the connector outer conductor is also provided with reinforcing ribs around it. This technical solution also has the aforementioned technical problems. Utility Model Content

[0004] The purpose of this invention is to provide a movable cover plate for a communication cavity filter to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a movable cover plate for a communication cavity filter, comprising a cover plate body and a tuning screw disposed on the cover plate body, wherein a protective shell is disposed on the cover plate body, the protective shell covers the cover plate body, and the tuning screw is located inside the protective shell.

[0006] Optionally, the protective shell is provided with a heat dissipation vent, and a plurality of heat dissipation fins are fixedly connected inside the heat dissipation vent.

[0007] Optionally, the protective shell is provided with a plurality of heat sinks II, the top of the heat sinks II being fixedly connected to the heat sink I, and the bottom of the heat sinks II being in contact with the top of the cover plate body.

[0008] Optionally, a protrusion is fixedly connected to the side of the protective shell, and a retaining plate is fixedly connected to the top of the cover plate body, with the top of the retaining plate penetrating through the protrusion.

[0009] Optionally, a limiting groove is formed on the top of the protrusion, a limiting plate is slidably connected to the inner wall of the limiting groove, a limiting rod is fixedly connected to the side of the limiting plate, and one end of the limiting rod is movably inserted into the card plate.

[0010] Optionally, a fixing rod is fixedly connected to the inner wall of the limiting groove, and the limiting plate is slidably connected to the surface of the fixing rod.

[0011] Optionally, a spring is fitted onto the surface of the fixing rod.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model utilizes the cooperation of a cover plate body, tuning screws, a protective shell, a heat dissipation vent, a heat sink one, a heat sink two, a protrusion, a retaining plate, a limiting groove, a limiting plate, a limiting rod, a fixing rod, and a spring. During use, the protective shell shields and protects multiple tuning screws, preventing them from colliding with other external objects, avoiding misoperation, and not affecting the use of the cavity filter. Furthermore, the protective shell has a heat dissipation vent and a heat sink one, while the heat sink two is in direct contact with the cover plate body. This accelerates the transfer of heat from the cover plate body to the heat sink one for comprehensive heat dissipation, resulting in excellent heat dissipation. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural schematic diagram of the front view of this utility model; Figure 2 This is a three-dimensional structural diagram of the present invention from a bottom view; Figure 3 This is a three-dimensional structural schematic diagram of the protective shell, heat sink one, and heat sink two of this utility model, showing a front view of their structure. Figure 4 This is a three-dimensional structural schematic diagram of the protective shell, heat sink one, and heat sink two of this utility model from a bottom view. Figure 5 This is a three-dimensional structural diagram of the protrusions and card plates of this utility model.

[0014] In the diagram: 1. Cover plate body, 2. Tuning screw, 3. Protective shell, 4. Heat dissipation port, 5. Heat sink one, 6. Heat sink two, 7. Protrusion, 8. Card plate, 9. Limiting groove, 10. Limiting plate, 11. Limiting rod, 12. Fixing rod, 13. Spring, 14. Through hole. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-5A movable cover plate for a communication cavity filter includes a cover plate body 1, which is a key component used in conjunction with the cavity filter. The cover plate body 1 is provided with a plurality of tuning screws 2 and a plurality of through holes 14. The through holes 14 are provided to allow the screws to pass through, thereby installing the cover plate body 1 onto the cavity filter. The provision of tuning screws 2 on the cover plate body 1 is prior art, and the method of adjusting the tuning screws 2 will not be described in detail here.

[0017] The top of the cover plate body 1 is integrally formed with two clamping plates 8. The two clamping plates 8 are symmetrically arranged on the top of the cover plate body 1. Each clamping plate 8 has a protrusion 7 movably fitted on its surface. The bottom of the protrusion 7 is in contact with the top of the cover plate body 1. The two protrusions 7 are fixedly connected by a protective shell 3 with a bottom opening. The protective shell 3 covers the top of the cover plate body 1, and the bottom of the protective shell 3 is in contact with the top of the cover plate body 1. The aforementioned multiple tuning screws 2 are all inside the protective shell 3. The protective shell 3 protects the tuning screws 2, so that they will not collide with other foreign objects and thus will not cause misoperation.

[0018] To lock the relative position of the protrusion 7 and the locking plate 8, a limiting groove 9 is provided on the top of the protrusion 7. A fixing rod 12 is fixedly connected to the inner wall of the limiting groove 9. A limiting plate 10 is slidably connected to the surface of the fixing rod 12. The side of the limiting plate 10 is in contact with the inner wall of the limiting groove 9. The top of the limiting plate 10 extends beyond the limiting groove 9, and a limiting rod 11 is fixedly connected to the side of the limiting plate 10. The end of the limiting rod 11 away from the limiting plate 10 is movably inserted into the locking plate 8. The setting of the fixing rod 12 can prevent the limiting plate 10 from detaching from the limiting groove 9, while the side of the limiting groove 9 restricts the movement of the limiting plate 10, so that the limiting plate 10 can only move back and forth linearly within the limiting groove 9. By using the insertion locking method of the limiting rod 11 and other structures, the relative position of the protrusion 7 and the locking plate 8 is locked. Moreover, this insertion method is convenient for manual operation. In operation, the operator presses the limiting plate 10 with their finger, which causes the limiting rod 11 to disengage from the clamping plate 8, thus unlocking the protrusion 7 and the clamping plate 8. Finally, to ensure the stability of the insertion of the limiting rod 11, a spring 13 is fitted on the surface of the fixing rod 12. The spring 13 is located on the side of the limiting plate 10 away from the clamping plate 8, and the spring 13 is in a compressed state as shown in the figure. The spring 13 has a tendency to return to its original position and extend, so the spring 13 tends to push the limiting plate 10 towards the clamping plate 8. The spring 13 compresses the limiting plate 10, ensuring that the limiting rod 11 is stably inserted into the clamping plate 8. Unlocking the protrusion 7 and the clamping plate 8 is also convenient. The gap between the limiting plate 10 and the clamping plate 8 is large enough for the operator to insert their finger, so the operator can press the limiting plate 10 with their finger, and the spring 13 will be compressed again.

[0019] To avoid affecting heat dissipation of the cover body 1, three large-diameter heat dissipation vents 4 are provided on the protective shell 3, and several heat dissipation fins 1 5 are fixedly connected in each heat dissipation vent 4. The multiple heat dissipation fins 1 5 are spaced apart to dissipate heat. The dense arrangement of the heat dissipation fins 1 5 prevents external objects from directly acting on the tuning screw 2 through the heat dissipation vents 4, thus preventing accidental operation of the tuning screw 2. Multiple heat dissipation fins 2 6 are provided inside the protective shell 3. The top of the heat dissipation fins 2 6 is fixedly connected to the bottom of the heat dissipation fins 1 5. The heat dissipation fins 2 6 are staggered from the tuning screw 2, so some heat dissipation fins 1 5 are not fixedly connected to the heat dissipation fins 2 6. The bottom of the heat dissipation fins 2 6 is in contact with the top of the cover body 1. Both the heat dissipation fins 1 5 and the heat dissipation fins 2 6 are made of aluminum and have excellent thermal conductivity and heat dissipation effect.

[0020] In use, the protective shell 3 covers multiple tuning screws 2, preventing accidental operation when handling the entire filter by external objects or personnel. The heat dissipation vent 4 facilitates heat dissipation. The heat sink 1 5 and heat sink 2 6 work together to facilitate heat conduction and transfer on the cover body 1. When it is necessary to disassemble the protective shell 3 to adjust the tuning screws 2, the operator pulls the limiting plate 10, which slides on the surface of the fixing rod 12. The spring 13 is compressed, and the limiting plate 10 will drive the limiting rod 11 to disengage from the clamping plate 8. Then, the operator holds the protective shell 3 and moves it upwards, causing the protrusion 7 to disengage from the surface of the clamping plate 8. The disassembly of the protective shell 3 can be completed manually. Finally, the tuning screws 2 can be adjusted.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A movable cover plate for a communication cavity filter, comprising a cover plate body (1) and a tuning screw (2) disposed on the cover plate body (1), characterized in that: A protective shell (3) is provided on the cover plate body (1), the protective shell (3) covers the cover plate body (1), and the tuning screw (2) is inside the protective shell (3).

2. The movable cover plate of the communication cavity filter according to claim 1, characterized in that: The protective shell (3) has a heat dissipation port (4), and a number of heat dissipation fins (5) are fixedly connected inside the heat dissipation port (4).

3. The movable cover plate of the communication cavity filter according to claim 2, characterized in that: The protective shell (3) is provided with a number of heat sinks (6), the top of the heat sinks (6) is fixedly connected to the heat sink (5), and the bottom of the heat sinks (6) is in contact with the top of the cover body (1).

4. The movable cover plate of the communication cavity filter according to claim 3, characterized in that: The protective shell (3) has a protrusion (7) fixedly connected to its side, and the cover plate body (1) has a clamping plate (8) fixedly connected to its top, with the top of the clamping plate (8) penetrating through the protrusion (7).

5. The movable cover plate of the communication cavity filter according to claim 4, characterized in that: The top of the protrusion (7) has a limiting groove (9), and a limiting plate (10) is slidably connected to the inner wall of the limiting groove (9). A limiting rod (11) is fixedly connected to the side of the limiting plate (10), and one end of the limiting rod (11) is movably inserted into the card plate (8).

6. The movable cover plate of the communication cavity filter according to claim 5, characterized in that: A fixing rod (12) is fixedly connected to the inner wall of the limiting groove (9), and the limiting plate (10) is slidably connected to the surface of the fixing rod (12).

7. The movable cover plate of the communication cavity filter according to claim 6, characterized in that: A spring (13) is fitted onto the surface of the fixing rod (12).

Images