High-frequency adjustable resonant cavity filter

Abstract

The invention provides a high-frequency adjustable resonant cavity filter, and relates to the technical field of cavity filters. The high-frequency adjustable resonant cavity filter comprises a cavity filter main body, the front side of the cavity filter main body is fixedly connected with a welding connector, and the Zener side of the cavity filter main body is provided with a clamping unit and a shielding unit; the shielding unit comprises a shielding cover, the shielding cover is fixedly connected to the front side of the cavity filter main body, the outer side of the shielding cover is fixedly connected with two side blocks, a rotating rod is rotatably connected between the two side blocks, and the outer side of the rotating rod is fixedly connected with a rotating block. By arranging the shielding cover, the shielding cover, the rotating block, the gear, the toothed plate, the moving block, the second screw rod and the connecting plate, the shielding cover and the shielding cover can be conveniently controlled to be matched for use, the variable capacitor in the shielding cover can be conveniently and directly protected, external electromagnetism is shielded, and the variable capacitor is prevented from being damaged.

Description

Technical Field

[0001] The invention relates to the technical field of cavity filters, and in particular to a high-frequency tunable resonant cavity filter. Background Art

[0002] Cavity filter is a microwave filter used for filtering and noise suppression of signals in a specific frequency band. Cavity filter is an important RF component that ensures that the communication system can accurately transmit and receive signals in a specific frequency band while effectively suppressing unnecessary interference and noise.

[0003] The cavity filter connects the variable capacitor by connecting the positive electrode of the variable capacitor to the negative electrode of the resistor in the circuit, which is convenient for adjusting the high-frequency tunable resonance. The variable capacitor is connected to the cavity filter by welding. The cavity filter is externally connected to the cavity filter without limiting and protecting it, which makes it easy for the cavity filter in the external circuit to be affected by external electromagnetic and impact forces, making the variable capacitor easily damaged by external factors. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies of the prior art, the present invention provides a high-frequency tunable resonant cavity filter, which solves the problem that when the filter is externally connected to a variable capacitor, the variable capacitor is not protected and the capacitor is easily damaged.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a high-frequency tunable resonant cavity filter, comprising a cavity filter body, the front side of the cavity filter body is fixedly connected with a welding connector, and the Zener side of the cavity filter body is provided with a clamping unit and a shielding unit;

[0008] The clamping unit comprises a fixing plate, the fixing plate is fixedly connected to the front side of the cavity filter body, a slide groove is provided on the front side of the fixing plate, slide plates are slidably connected to the inner sides of the left and right ends of the slide groove, the front sides of the left and right slide plates are fixedly connected to connecting blocks, the front sides of the left and right connecting blocks are fixedly connected to variable capacitance clamping plates, and a circular hole is provided in the middle of the fixing plate;

[0009] The shielding unit includes a shielding cover, which is fixedly connected to the front side of the cavity filter body, two side blocks are fixedly connected to the outer side of the shielding cover, a rotating rod is rotatably connected between the two side blocks, a rotating block is fixedly connected to the outer side of the rotating rod, a shielding cover is fixedly connected to the outer side of the rotating block, a gear is fixedly connected to the outer side of the front end of the rotating rod, the front side of the shielding cover is fixedly connected to a front plate, a movable groove is opened on the front side of the front plate, a movable block is slidably connected to the inner side of the movable groove, a connecting plate is fixedly connected to the upper side of the movable block, a toothed plate is fixedly connected to the outer side of the connecting plate, and a screw rod 2 is rotatably connected to the inner side of the movable groove.

[0010] Preferably, the second screw is threadedly connected to the moving block, and the outer end of the second screw is fixedly connected to the second turning handle, so as to facilitate the control of the moving block to move left and right.

[0011] Preferably, the connecting plate and the rotating block are arranged in an L-shaped structure.

[0012] Preferably, the toothed plate is meshed with the gear, so as to facilitate the control of the rotation of the gear.

[0013] Preferably, the front sides of the left and right slides are fixedly connected with control boards, the outer side of the control board is fixedly connected with a control block, the upper side of the fixed board is fixedly connected with a top board, the front side of the top board is provided with a lifting slot, the inner side of the lifting slot is slidably connected with a lifting block, the front lower side of the lifting block is fixed with a stop block, the upper side of the lifting block is provided with a screw, the inner sides of the left and right ends of the fixed board are fixedly connected with mounting blocks, and a telescopic rod and a spring are fixedly connected between the mounting block and the connecting block. It is convenient to control the variable capacitor clamps on both sides to limit the capacitance.

[0014] Preferably, the control block and the stop block are both arranged in an arc-shaped structure.

[0015] Preferably, the screw rod 1 is threadedly connected to the top plate, so as to facilitate the control of the movement of the stop block.

[0016] Preferably, the upper end of the screw rod 1 is fixedly connected with a turning handle 1, so as to facilitate the control of the rotation of the screw rod 1.

[0017] (III) Beneficial effects

[0018] The present invention provides a high-frequency tunable resonant cavity filter, which has the following beneficial effects:

[0019] 1. By providing a shielding cover, a shielding cover, a rotating block, a gear, a toothed plate, a moving block, a screw rod 2 and a connecting plate, it is convenient to control the shielding cover and the shielding cover to be used in conjunction with each other, and it is convenient to directly protect the variable capacitor inside the shielding cover and shield the external electromagnetic to avoid damage to the variable capacitor device.

[0020] 2. By providing a fixed plate, a slide plate, a connecting block, a variable capacitor clamping plate, a control plate, a control block, a screw rod and a stop block, the clamping plates on both sides can limit the variable capacitor, thereby increasing the stability of the variable capacitor during filter transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is the overall three-dimensional structure diagram of the present invention;

[0022] Figure 2 It is a three-dimensional structural diagram of the limiting unit in the present invention;

[0023] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0024] Figure 4 It is a three-dimensional structural diagram of the limiting unit in the present invention from another viewing angle;

[0025] Figure 5 It is a three-dimensional structural diagram of the shielding unit in the present invention;

[0026] Figure 6 for Figure 5 This is an enlarged view of point B.

[0027] Among them, 1. cavity filter body; 2. welding connector; 3. clamping unit; 301. fixing plate; 302. slide groove; 303. slide plate; 304. connecting block; 305. variable capacitor clamp; 306. round hole; 307. control board; 308. top plate; 309. control block; 310. lifting groove; 312. lifting block; 313. stop block; 314. screw one; 315. handle one; 316. telescopic rod; 317. spring; 318. mounting block; 4. shielding unit; 401. shielding cover; 402. side block; 403. rotating block; 404. shielding cover; 405. rotating rod; 406. gear; 407. tooth plate; 408. connecting plate; 409. front plate; 410. moving groove; 411. screw two; 412. moving block; 413. handle two. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] like Figure 1-6As shown, an embodiment of the present invention provides a high-frequency tunable resonant cavity filter, including a cavity filter body 1, a welding connector 2 is fixedly connected to the front side of the cavity filter body 1, and a clamping unit 3 and a shielding unit 4 are provided on the Zener side of the cavity filter body 1, wherein the welding connector 2 is provided to facilitate welding the variable capacitor to the cavity filter body 1.

[0030] The clamping unit 3 includes a fixing plate 301, which is fixedly connected to the front side of the cavity filter body 1. A slide groove 302 is provided on the front side of the fixing plate 301. The inner sides of the left and right ends of the slide groove 302 are slidably connected with slide plates 303. The front sides of the left and right slide plates 303 are fixedly connected with connecting blocks 304. The front sides of the left and right connecting blocks 304 are fixedly connected with variable capacitance clamps 305. A circular hole 306 is provided in the middle of the fixing plate 301. The front sides of the left and right slide plates 303 are fixedly connected with control boards 307. The outer sides of the control boards 307 are fixedly connected with control The control block 309 is fixedly connected to the top plate 308 on the upper side of the fixed plate 301, and a lifting groove 310 is provided on the front side of the top plate 308. A lifting block 312 is slidably connected to the inner side of the lifting groove 310. A stop block 313 is fixedly provided on the front and lower sides of the lifting block 312 for feeding. A screw 314 is provided on the upper side of the lifting block 312. The inner sides of the left and right ends of the fixed plate 301 are fixedly connected to mounting blocks 318. A telescopic rod 316 and a spring 317 are fixedly connected between the mounting block 318 and the connecting block 304. The control block 309 and the stop block 313 are both arranged in an arc-shaped structure. The screw 31 4 is threadedly connected to the top plate 308, and the upper end of the screw rod 1 314 is fixedly connected with a handle 1 315. When in use, the handle 1 315 is rotated, and the handle 1 315 drives the screw rod 1 314 to rotate, and the screw rod 1 314 drives the lifting block 312 to move, and the lifting block 312 drives the stop block 313 to move, and the stop block 313 squeezes the control blocks 309 on the left and right sides, so that the control blocks 309 drive the control board 307 to move, and the control boards 307 on both sides face each other, and the control board 307 drives the slide plate 303 to move, and the slide plate 303 drives the connecting block 304 to move, and the connecting block 304 drives The variable capacitor clamp 305 moves so that the variable capacitor clamps 305 on the left and right sides are separated from each other, which is convenient for placing the variable capacitor. At this time, the spring 317 is compressed. When the variable capacitor needs to be clamped and limited, the screw 314 is rotated to control the stop block 313 to separate from the control block 309. At this time, under the action of the elastic force of the spring 317, the spring 317 drives the variable capacitor clamp 305 on the connecting block 304 to move, which is convenient for the variable capacitor clamps 305 on the left and right sides to clamp the variable capacitor, so that when the cavity filter main body 1 is in operation, the variable capacitor remains stable and avoids damage.

[0031] The shielding unit 4 includes a shielding cover 401, which is fixedly connected to the front side of the cavity filter body 1. Two side blocks 402 are fixedly connected to the outside of the shielding cover 401. A rotating rod 405 is rotatably connected between the two side blocks 402. A rotating block 403 is fixedly connected to the outside of the rotating rod 405. A shielding cover 404 is fixedly connected to the outside of the rotating block 403. A gear 406 is fixedly connected to the outside of the front end of the rotating rod 405. A front plate 409 is fixedly connected to the front side of the shielding cover 401. A moving groove 410 is opened on the front side of the front plate 409. A moving block 412 is slidably connected to the inner side of the moving groove 410. When in use, the shielding cover 401 and the shielding cover 40 4. It is convenient to protect the variable capacitor and shield the external electromagnetic, thereby increasing the service life of the variable capacitor. When the variable capacitor needs to be repaired, the second turning handle 413 is turned, and the second turning handle 413 drives the second screw 411 to rotate, and the second screw 411 drives the moving block 412 to move horizontally, and the moving block 412 drives the connecting plate 408 to move, and the connecting plate 408 drives the tooth plate 407 to move, and the tooth plate 407 drives the gear 406 to rotate, and the gear 406 drives the rotating rod 405 to rotate, and the rotating rod 405 drives the rotating block 403 to rotate, and the rotating block 403 drives the shielding cover 404 to rotate, so as to control the opening of the shielding cover 404 and protect the internal variable capacitor.

[0032] Working principle: When in use, the staff first welds the variable capacitor and the welding connector 2 together, and then turns the handle 315, the handle 315 drives the screw 314 to rotate, and the control block 313 is separated from the control block 309. At this time, under the action of the elastic force of the spring 317, it is easy to control the variable capacitor clamps 305 on the left and right sides to clamp the variable capacitor, increase the transportation stability of the variable capacitor, and then protect the variable capacitor through the shielding cover 401 and the shielding cover 404. When the variable capacitor needs to be repaired, first turn the handle 413 to drive the screw 411 to rotate. Under the action of the moving block 412, the connecting plate 408, the tooth plate 407 and the gear 406, it is easy to control the shielding cover 404 to open, which is convenient for maintenance.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-frequency tunable resonant cavity filter, comprising a cavity filter body (1), characterized in that: A welding connector (2) is fixedly connected to the front side of the cavity filter body (1), and a clamping unit (3) and a shielding unit (4) are provided on the Zener side of the cavity filter body (1); The clamping unit (3) comprises a fixing plate (301), the fixing plate (301) being fixedly connected to the front side of the cavity filter body (1), the fixing plate (301) being provided with a slide groove (302) on the front side, the inner sides of the left and right ends of the slide groove (302) being slidably connected with slide plates (303), the front sides of the left and right slide plates (303) being fixedly connected with connection blocks (304), the front sides of the left and right connection blocks (304) being fixedly connected with variable capacitance clamping plates (305), and the middle part of the fixing plate (301) being provided with a circular hole (306); The shielding unit (4) comprises a shielding cover (401), the shielding cover (401) is fixedly connected to the front side of the cavity filter body (1), two side blocks (402) are fixedly connected to the outside of the shielding cover (401), a rotating rod (405) is rotatably connected between the two side blocks (402), a rotating block (403) is fixedly connected to the outside of the rotating rod (405), a shielding cover (404) is fixedly connected to the outside of the rotating block (403), and the front end of the rotating rod (405) is fixedly connected to the outside of the rotating rod (405). The shielding cover (401) is fixedly connected with a gear (406), the front side of the shielding cover (401) is fixedly connected with a front plate (409), the front side of the front plate (409) is provided with a movable groove (410), the inner side of the movable groove (410) is slidably connected with a movable block (412), the upper side of the movable block (412) is fixedly connected with a connecting plate (408), the outer side of the connecting plate (408) is fixedly connected with a toothed plate (407), and the inner side of the movable groove (410) is rotatably connected with a screw rod 2 (411).

2. A high frequency tunable resonant cavity filter according to claim 1, characterized in that: The second screw rod (411) is threadedly connected to the moving block (412), and the outer end of the second screw rod (411) is fixedly connected to the second turning handle (413).

3. The high frequency tunable resonant cavity filter according to claim 1, characterized in that: The connecting plate (408) and the rotating block (403) are arranged in an L-shaped structure.

4. The high frequency tunable resonant cavity filter according to claim 1, characterized in that: The tooth plate (407) is meshingly connected with the gear (406).

5. The high frequency tunable resonant cavity filter according to claim 1, characterized in that: The front sides of the left and right slide plates (303) are fixedly connected with control plates (307), the outer side of the control plate (307) is fixedly connected with a control block (309), the upper side of the fixed plate (301) is fixedly connected with a top plate (308), the front side of the top plate (308) is provided with a lifting groove (310), the inner side of the lifting groove (310) is slidably connected with a lifting block (312), the front lower side of the lifting block (312) is fixed with a stop block (313) for feeding, the upper side of the lifting block (312) is provided with a screw rod (314), the inner sides of the left and right ends of the fixed plate (301) are fixedly connected with mounting blocks (318), and a telescopic rod (316) and a spring (317) are fixedly connected between the mounting block (318) and the connecting block (304).

6. A high frequency tunable resonant cavity filter according to claim 5, characterized in that: The control block (309) and the stop block (313) are both arranged in an arc-shaped structure.

7. The high frequency tunable resonant cavity filter according to claim 5, characterized in that: The screw rod 1 (314) is threadedly connected to the top plate (308).

8. The high frequency tunable resonant cavity filter according to claim 5, characterized in that: The upper end of the screw rod 1 (314) is fixedly connected to a turning handle 1 (315).

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