CN219591628U - Filter easy to adjust frequency - Google Patents

Abstract

The utility model relates to the technical field of filters, and discloses a filter easy to adjust frequency. According to the utility model, the fixing mechanism is arranged at the lower end of the protective box for mounting, clamping and fixing, and the fixing mechanism is suitable for mounting points of various specifications due to the retractility of the fixing spring, meanwhile, the protective top cover shell at the upper end is opened in a sliding way at any time, so that the internal filter can be overhauled and replaced conveniently and quickly, the resonant disc follows the adjusting screw to adjust the distance between the resonant disc and the resonant mechanism, the frequency of the filter can be reduced or improved by adjusting the distance between the resonant disc and the resonant disc under the condition that the cross section area is kept unchanged, the resonant mechanism at the bottom is selectively communicated by the movable conducting mechanism, the applicable frequency is adjusted according to the communication point, and the cavity filter works in signal environments with different frequencies, so that the applicability is enhanced.

Description

Filter easy to adjust frequency

Technical Field

The utility model relates to the technical field of filters, in particular to a filter with easy frequency adjustment.

Background

The filter is a filter circuit composed of a capacitor, an inductor and a resistor. The filter can effectively filter the frequency points of the specific frequency or the frequencies outside the frequency points in the power line to obtain a power signal of the specific frequency or eliminate the power signal of the specific frequency.

The prior patent (publication number: CN 215732122U) discloses a filter, which comprises a shell, a cover plate, a resonant rod and a debugging component, wherein a containing groove is formed in the shell, and the cover plate is arranged on the shell and covers the notch of the containing groove; the resonant rod is positioned in the accommodating groove, one end of the resonant rod is connected to the bottom of the accommodating groove, and the other end of the resonant rod extends towards the cover plate; the debugging part comprises a debugging plectrum and a regulating hole, the regulating hole is arranged on the side wall of the shell and is communicated with the accommodating groove, the debugging plectrum is arranged on the surface of the cover plate facing the accommodating groove and extends towards the bottom of the accommodating groove, and the debugging plectrum is positioned between the resonant rod and the regulating hole. According to the utility model, the distance between the debugging poking piece and the resonance rod is changed by matching the debugging poking piece with the adjusting hole, so that the filter is adjusted, and the filter has a simple structure, is convenient to operate and is efficient; the structure of the debugging component increases the distance between the adjusting hole and the resonant rod, reduces the influence on indexes after the adjusting hole is plugged subsequently, and improves the debugging efficiency.

The inventors found that the following problems exist in the prior art in the process of implementing the present utility model: 1. the filter can only be applied to a signal environment with specific frequency due to the fixity of the debugging component and the resonant rod, cannot be adjusted according to actual requirements, and has low applicability; 2. this wave filter lacks external protection machanism, receives external influence easily and causes the damage, and this wave filter lacks installation fixed establishment, inconvenient quick dismantlement and the installation to reduce its efficiency of dismantling and installing when using, consequently, the skilled artisan provides a wave filter of easy adjustment frequency, in order to solve the problem that proposes among the above-mentioned background art.

Disclosure of Invention

The utility model aims to solve the defects in the prior art, and provides a filter easy to adjust the frequency, the filter is embedded into a protective box, a fixing mechanism is arranged at the lower end of the protective box for installation, clamping and fixing, the fixing mechanism can be suitable for mounting points with different specifications due to the retractility of a fixing spring, meanwhile, a protective top cover shell at the upper end is opened in a sliding way at any time, so that the filter in the interior is convenient to overhaul and replace parts, a resonant disc follows an adjusting screw to adjust the distance between the resonant disc and the resonant mechanism, the frequency of the filter can be reduced or improved by adjusting the distance between the resonant disc and the resonant mechanism under the condition of ensuring that the cross section area is kept unchanged, the resonant mechanism at the bottom is selectively communicated by a movable conducting mechanism, the applicable frequency is adjusted according to a communication point, and the cavity filter is further operated in signal environments with different frequencies, and the applicability is enhanced.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a filter of easy adjustment frequency, includes the protective housing, the both sides have all been seted up to the protective housing up end and have been seted up the spout and the spout sliding is provided with the slider, two the fixed protective top cap that is provided with of slider up end, the both sides of protective housing lower terminal surface all are fixed and are provided with fixed establishment, the draw-in groove has all been seted up to the inside bottom surface both sides of protective housing, the inside bottom surface midpoint department of protective housing is fixed and is provided with the casing;

the upper end face of the shell is fixedly provided with a sealing cover through a plurality of bolts, a thread block is fixedly arranged at the middle point of the upper end face of the sealing cover, an adjusting screw is sleeved at the middle point of the upper end face of the thread block in a threaded manner, a resonant disc is fixedly arranged on the lower end face of the adjusting screw, movable conductive mechanisms are embedded and arranged at the positions, close to the lower ends, of two sides of the shell, clamping mechanisms are embedded and arranged at one side of the upper end face of the two movable conductive mechanisms, sliding grooves are formed in the positions, close to the upper ends, of two sides of the inner wall of the shell, fixed columns are embedded and arranged at the two sides of the bottom end face inside the shell, and a plurality of resonant mechanisms are movably sleeved at the outer sides of the fixed columns;

through above-mentioned technical scheme, arrange whole filter in the protective housing of relative sealedly, the fixed establishment that the protective housing lower extreme set up can carry out the centre gripping installation fast, and the protective top cap of upper end slip joint is convenient for overhaul and the part is changed to inside filter fast, the distance between resonant disk and the resonance mechanism is controlled by the adjusting screw of upper end to inside filter simultaneously, thereby accomplish under the circumstances that filter cross section area keeps unchanged, adjust the distance between the two and can reduce or promote the frequency of filter, simultaneously the resonance mechanism bottom and the movable conductive mechanism of lower extreme are connected, can carry out the intercommunication of a plurality of resonance mechanisms as required during the use, and then realize that the cavity filter works under the signal environment of different frequencies, strengthen its suitability.

Further, the resonance disc is positioned at the lower end of the sealing cover, and the resonance disc is arranged in the sliding grooves at two sides of the inner wall of the shell in a sliding manner;

through the technical scheme, the resonance disc is in sliding clamping connection with the sliding groove, when the adjusting screw is rotated, the adjusting screw rotates in the thread block in a threaded mode and moves downwards, and at the moment, the resonance disc in the lower end moves along with the movement, so that the height adjustment of the resonance disc is completed.

Further, the fixing mechanism comprises a fixing plate, a plurality of fixing springs are fixedly arranged on one side of the fixing plate, and the other ends of the fixing springs are connected with the protective box;

through above-mentioned technical scheme, when needs are fixed the protective housing, aim at the mounting point with the mounting groove of protective housing lower extreme, the mounting point both sides extrude the fixed plate this moment, promote the fixed spring shrink of one side, and fixed spring's reverse effort carries out the roof pressure with fixed plate and mounting point fixedly, and because fixed spring's elasticity to the adaptable mounting point of multiple different specifications uses.

Further, the movable conductive mechanism comprises a conductive block, a pulling rod is fixedly arranged on one side of the conductive block, and a pulling spring is fixedly sleeved on a rod body at the outer side of the pulling rod;

through the technical scheme, the pulling spring is clamped in the shell, when the pulling rod is pulled, the pulling rod drives the conductive block to move, and at the moment, the conductive block extrudes the pulling spring to shrink, so that the conductive block is separated from the resonance mechanism.

Further, the conductive block is positioned at the lower end of the resonance mechanism, the pulling rod is L-shaped, the shorter end of the pulling rod is arranged in the clamping groove in a sliding manner, and a groove is formed in the lower end face of the pulling rod positioned in the clamping groove;

through the technical scheme, when the pulling rod is pulled, the pulling rod moves to the clamping groove, and at the moment, the clamping mechanism in the groove at the lower end of the pulling rod automatically pops out and clamps into the groove, so that the pulling rod is fixed, continuous pulling and fixing are not needed, and the use is more convenient.

Further, the resonance mechanism comprises a resonance tube, and the lower end surface of the resonance tube is fixedly provided with a power-on sheet;

through the technical scheme, since the conductive block is positioned at the lower end of the resonant mechanism, the conductive block is connected with the electrified sheet at the moment, and when the conductive block is separated from the electrified sheet, the resonant tubes at the upper end are enabled to be no longer operated, so that the communication of different resonant tubes is completed, and the cavity filter is further operated in signal environments with different frequencies, so that the applicability is enhanced.

Further, the clamping mechanism comprises a clamping rod, a pull ring is fixedly arranged at the upper end of the clamping rod, a clamping block is fixedly arranged on the lower end face of the clamping rod, and a clamping spring is fixedly sleeved on the upper end face of the clamping block, which is positioned outside the clamping rod;

through the technical scheme, the pulling rod moves towards the concave point of the clamping groove, when the groove in the lower end of the pulling rod is arranged at the upper end of the clamping groove, the clamping spring at the upper end of the clamping block is not stressed and extruded any more, the clamping spring reversely pushes the clamping block at the moment, the clamping block is clamped into the concave point of the clamping groove to complete clamping limiting fixation, manual continuous pulling fixation is not needed at the moment, and two hands are liberated to operate, so that the clamping device is more convenient to use.

The utility model has the following beneficial effects:

1. according to the filter easy to adjust the frequency, the filter is embedded into the protective box, the fixing mechanism is arranged at the lower end of the protective box to be installed, clamped and fixed, at the moment, the two sides of the mounting point extrude the fixing plate to enable the fixing spring at one side to shrink, the reverse acting force of the fixing spring is used for jacking and fixing the fixing plate and the mounting point, and due to the retractility of the fixing spring, the filter is applicable to the mounting points with various different specifications, and meanwhile, the protective top cover shell at the upper end is opened in a sliding mode at any time, so that the filter inside is convenient to overhaul and replace parts rapidly.

2. According to the filter easy to adjust the frequency, the resonant disc at the upper end of the filter is fixed at the lower end of the adjusting screw, when the adjusting screw rotates to move downwards, the resonant disc is driven to move downwards synchronously, the distance between the resonant disc and the resonant mechanism is changed, so that the frequency of the filter can be reduced or improved by adjusting the distance between the resonant disc and the resonant mechanism under the condition that the cross section area is kept unchanged, meanwhile, the bottom end of the resonant mechanism at the lower end is provided with the movable conductive mechanism, and the connection quantity of the resonant mechanisms and the movable conductive mechanism can be adjusted during use, so that the applicable frequency of the filter is adjusted, the cavity filter can work in signal environments with different frequencies, and the applicability is enhanced.

Drawings

Fig. 1 is a schematic structural diagram of a filter with easy frequency adjustment according to the present utility model;

FIG. 2 is a schematic front view of a filter with easy frequency adjustment according to the present utility model;

FIG. 3 is an enlarged view of FIG. 2A in accordance with the present utility model;

fig. 4 is an enlarged view of fig. 2B in accordance with the present utility model.

Legend description:

1. a protective top cover; 2. a slide block; 3. a fixing mechanism; 301. a fixing plate; 302. a fixed spring; 4. a protective box; 5. a cover; 6. a screw block; 7. adjusting a screw; 8. a resonant disk; 9. a sliding groove; 10. a movable conductive mechanism; 1001. a conductive block; 1002. pulling the spring; 1003. pulling the rod; 11. a clamping groove; 12. a housing; 13. a resonance mechanism; 1301. a resonance tube; 1302. energizing the sheet; 14. fixing the column; 15. a clamping mechanism; 1501. a clamping spring; 1502. a clamping block; 1503. pulling the ring; 1504. a clamping rod; 16. a groove.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples

Referring to fig. 1-4, one embodiment provided by the present utility model is: the utility model provides an easily frequency regulation's wave filter, including protective housing 4, the spout has all been seted up to the both sides of protective housing 4 up end and the spout is slided and is provided with slider 2, two slider 2 up end are fixed and are provided with protection top cap 1, the both sides of protective housing 4 lower terminal surface are all fixed and are provided with fixed establishment 3, draw-in groove 11 has all been seted up to the inside bottom terminal surface both sides of protective housing 4, the fixed casing 12 that is provided with in the midpoint department of the inside bottom terminal surface of protective housing 4, because the wave filter need satisfy the operation requirement in relative airtight space at the during operation, great gap can lead to signal leakage, and then lead to the index to be unusual, place the wave filter in the protective housing 4 of relative sealedly this moment, not only accomplish its guard effect, and guarantee its relative sealed space that work needs.

The upper end face of the shell 12 is fixedly provided with the sealing cover 5 through a plurality of bolts, the middle point of the upper end face of the sealing cover 5 is fixedly provided with a thread block 6, an adjusting screw 7 is sleeved at the middle point of the upper end face of the thread block 6 in a threaded manner, the adjusting screw 7 can be used in threaded rotation lifting in the thread block 6, the mobility of the screw can be reduced through threaded lifting, falling accidents are reduced, the lower end face of the adjusting screw 7 is fixedly provided with a resonant disk 8, movable conductive mechanisms 10 are embedded into the lower end positions of two sides of the shell 12, clamping mechanisms 15 are embedded into one side of the upper end faces of the two movable conductive mechanisms 10, sliding grooves 9 are formed in the upper end positions of two sides of the inner wall of the shell 12, fixing columns 14 are embedded into two sides of the bottom end face of the inner side of the shell 12, and resonant mechanisms 13 are movably sleeved outside the fixing columns 14. The resonance mechanism 13 is sleeved outside the fixed column 14, so that the resonance mechanism is convenient to take down and replace, and the installation and the disassembly are quicker.

The resonance disk 8 is located the closing cap 5 lower extreme, and resonance disk 8 slides and sets up in the sliding tray 9 of casing 12 inner wall both sides, with resonance disk 8 slip joint in sliding tray 9, when rotating adjusting screw 7, adjusting screw 7 rotates and moves down in screw thread piece 6 internal thread, and resonance disk 8 in the lower extreme follows the motion this moment to accomplish the altitude mixture control of resonance disk 8.

The fixing mechanism 3 comprises a fixing plate 301, a plurality of fixing springs 302 are fixedly arranged on one side of the fixing plate 301, the other ends of the fixing springs 302 are connected with the protective box 4, when the protective box 4 is required to be fixed, mounting grooves at the lower end of the protective box 4 are aligned with mounting points, at the moment, the fixing plate 301 is extruded by two sides of the mounting points, the fixing springs 302 on one side are promoted to shrink, the fixing plate 301 and the mounting points are fixed in a jacking mode by reverse acting force of the fixing springs 302, and the fixing springs 302 are telescopic, so that the fixing plate is applicable to the mounting points with various different specifications.

The movable conductive mechanism 10 comprises a conductive block 1001, a pulling rod 1003 is fixedly arranged on one side of the conductive block 1001, a pulling spring 1002 is fixedly sleeved on the outer rod of the pulling rod 1003, the pulling spring 1002 is clamped in the shell 12, when the pulling rod 1003 is pulled, the pulling rod 1003 drives the conductive block 1001 to move, the conductive block 1001 extrudes the pulling spring 1002 to shrink, so that the conductive block 1001 is separated from the resonance mechanism 13, the conductive block 1001 is positioned at the lower end of the resonance mechanism 13, the pulling rod 1003 is L-shaped, the shorter end of the pulling rod 1003 is slidably arranged in the clamping groove 11, a groove 16 is formed in the lower end face of the pulling rod 1003 positioned in the clamping groove 11, when the pulling rod 1003 is pulled, the pulling rod 1003 moves towards the clamping groove 11, and a clamping mechanism 15 in the groove 16 at the lower end of the pulling rod 1003 automatically pops out and is clamped in the groove 16, so that the pulling rod 1003 is fixed without continuous pulling and is more convenient to use.

The resonance mechanism 13 includes resonance tube 1301, and resonance tube 1301 lower terminal surface is fixed to be provided with the circular telegram piece 1302, because conducting block 1001 is located resonance mechanism 13 lower extreme, and conducting block 1001 and circular telegram piece 1302 are connected this moment, and when conducting block 1001 and circular telegram piece 1302 separation, make resonance tube 1301 of upper end no longer work to accomplish the intercommunication of different resonance tubes 1301, and then realize that the cavity filter works under the signal environment of different frequencies, reinforcing suitability practices thrift equipment cost.

The clamping mechanism 15 comprises a clamping rod 1504, a pulling ring 1503 is fixedly arranged at the upper end of the clamping rod 1504, a clamping block 1502 is fixedly arranged on the lower end face of the clamping rod 1504, a clamping spring 1501 is fixedly sleeved on the upper end face of the clamping block 1502 and located on the outer side of the clamping rod 1504, the pulling rod 1003 moves towards the concave point of the clamping groove 11, when a groove 16 in the lower end of the pulling rod 1003 is arranged at the upper end of the clamping groove 11, the clamping spring 1501 at the upper end of the clamping block 1502 is not stressed and extruded, at the moment, the clamping spring 1501 reversely pushes the clamping block 1502, clamping block 1502 is clamped into the concave point of the clamping groove 11 to complete clamping limiting fixation, at the moment, manual continuous pulling fixation is not needed, two hands are liberated, and the clamping mechanism is more convenient to use.

Working principle: firstly, the protective box 4 is clamped at a mounting point through a fixing mechanism 3 at the lower end, at the moment, a filter body is arranged in the protective box 4, a plurality of resonance tubes 1301 with power-on sheets 1302 are sleeved outside a fixed column 14, a pull ring 1503 at the upper end of a pull rod 1003 is pulled to drive a clamping rod 1504 to move upwards, a clamping block 1502 at the lower end moves upwards to be separated from a concave part of a clamping groove 11, so that the limitation of a conductive block 1001 is relieved, the conductive block 1001 is reset under the action of a pull spring 1002, the conductive block 1001 is caused to be communicated with the power-on sheets 1302, meanwhile, the communication between the conductive block 1001 and the power-on sheets 1302 is selected according to requirements, so that the internal communication points are controlled, the applicable frequency of the filter is regulated, and the cavity filter works in signal environments with different frequencies;

at this time, the cover 5 in the upper end of the housing 12 is covered by a plurality of screws, and the adjusting screw 7 is twisted as required to drive the resonance disk 8 in the lower end to rise or fall, so that the distance between the resonance disk 8 and the resonance tube 1301 is changed, and thus, the frequency adjustment of the filter can be completed, and the protective top cover 1 in the upper end is sealed to form a relatively sealed space, thereby reducing signal leakage caused by gaps.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims (7)

1. A filter easy to adjust the frequency, comprising a protection box (4), characterized in that: the two sides of the upper end face of the protection box (4) are provided with sliding grooves, sliding blocks (2) are arranged in the sliding grooves in a sliding manner, the upper end faces of the two sliding blocks (2) are fixedly provided with protection top covers (1), the two sides of the lower end face of the protection box (4) are fixedly provided with fixing mechanisms (3), the two sides of the inner bottom end face of the protection box (4) are provided with clamping grooves (11), and a shell (12) is fixedly arranged at the midpoint of the inner bottom end face of the protection box (4);

the utility model discloses a portable electronic device, including casing (12), sliding groove (9) are all offered to casing (12), casing (12) up end is provided with closing cap (5) through a plurality of bolt fastening, closing cap (5) up end midpoint department is fixed to be provided with screw thread piece (6), screw thread piece (6) up end midpoint department screw thread has cup jointed adjusting screw (7), adjusting screw (7) lower terminal surface is fixed to be provided with resonance dish (8), casing (12) both sides are provided with movable conductive mechanism (10) by lower extreme department embedding, two movable conductive mechanism (10) up end one side is provided with joint mechanism (15) in the embedding, sliding groove (9) have all been offered by upper end department to casing (12) inner wall both sides, casing (12) inside bottom face both sides are provided with fixed column (14) in the embedding, a plurality of fixed column (14) outside all movable sleeve is equipped with resonance mechanism (13).

2. A filter for facilitating frequency adjustment according to claim 1, wherein: the resonance disc (8) is positioned at the lower end of the sealing cover (5), and the resonance disc (8) is arranged in the sliding grooves (9) on two sides of the inner wall of the shell (12) in a sliding mode.

3. A filter for facilitating frequency adjustment according to claim 1, wherein: the fixing mechanism (3) comprises a fixing plate (301), a plurality of fixing springs (302) are fixedly arranged on one side of the fixing plate (301), and the other ends of the fixing springs (302) are connected with the protective box (4).

4. A filter for facilitating frequency adjustment according to claim 1, wherein: the movable conductive mechanism (10) comprises a conductive block (1001), a pulling rod (1003) is fixedly arranged on one side of the conductive block (1001), and a pulling spring (1002) is fixedly sleeved on the rod body on the outer side of the pulling rod (1003).

5. A filter for facilitating frequency adjustment according to claim 4, wherein: the conductive block (1001) is located at the lower end of the resonance mechanism (13), the pulling rod (1003) is L-shaped, one shorter end of the pulling rod is slidably arranged in the clamping groove (11), and a groove (16) is formed in the lower end face of the pulling rod (1003) located in the clamping groove (11).

6. A filter for facilitating frequency adjustment according to claim 1, wherein: the resonance mechanism (13) comprises a resonance tube (1301), and an energizing sheet (1302) is fixedly arranged on the lower end face of the resonance tube (1301).

7. A filter for facilitating frequency adjustment according to claim 1, wherein: the clamping mechanism (15) comprises a clamping rod (1504), a pull ring (1503) is fixedly arranged at the upper end of the clamping rod (1504), a clamping block (1502) is fixedly arranged on the lower end face of the clamping rod (1504), and a clamping spring (1501) is fixedly sleeved on the upper end face of the clamping block (1502) outside the clamping rod (1504).