CN215818070U

CN215818070U - Annular low-insertion-loss acoustic surface filter

Info

Publication number: CN215818070U
Application number: CN202122146168.1U
Authority: CN
Inventors: 杨光
Original assignee: Shenzhen Fuyue Electronics Co ltd
Current assignee: Shenzhen Fuyue Electronics Co ltd
Priority date: 2021-09-07
Filing date: 2021-09-07
Publication date: 2022-02-11
Anticipated expiration: 2031-09-07

Abstract

The utility model discloses an annular low-insertion-loss sound meter filter, which comprises an emitting cover, a base and a connector lug, wherein a plurality of connector lugs are fixedly installed at the bottom of the base, a plurality of fixing blocks provided with through holes are fixedly installed on the bottom surface of the emitting cover, a plurality of fixing grooves are formed in the top surface of the base, and a clamping rod capable of axially moving is arranged in the base.

Description

Annular low-insertion-loss acoustic surface filter

Technical Field

The utility model relates to the technical field of acoustic surface filters, in particular to an annular acoustic surface filter with low insertion loss.

Background

The acoustic surface filter (usually abbreviated as SAW) mainly functions on the principle that an input signal of an electric wave is converted into mechanical energy by using the piezoelectric property of a piezoelectric material and an input and output Transducer (Transducer), and the mechanical energy is converted into an electric signal after being processed, so that the aims of filtering unnecessary signals and noises and improving the signal receiving quality are fulfilled;

an existing annular reflection grating-free low-insertion-loss acoustic surface filter with the publication number of CN111010142A is characterized in that a Y matrix based on an STW-COM model is a background consisting of two acoustic ports and an electric port, the Y3P module in ADS is called by using the idea that the Y matrix is equivalent to the propagation of acoustic waves, the Y matrix of 3 x 3 is assigned, and the designed annular acoustic surface filter limits a sound source to vibrate in a loop formed by IDTs of interdigital transducers, so that the energy loss is reduced, reflection gratings are omitted, the insertion loss effect lower than that of the conventional acoustic surface filter is achieved, but the existing acoustic surface filter is inconvenient to disassemble and maintain when internal elements are damaged.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides the annular low-insertion-loss acoustic surface filter which is convenient to disassemble and maintain.

In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides an acoustic meter wave filter of low insertion loss of annular, is including emitting lid, base and connector lug, a plurality of connector lugs of base bottom fixed mounting, emit a plurality of fixed blocks of seting up the through-hole of lid bottom surface fixed mounting, a plurality of fixed slots have been seted up to the base top surface, but the inside kelly that is equipped with axial displacement of base.

Preferably, a first groove is formed in one side of the inner wall of the fixing groove, a second groove is formed in the other side of the inner wall of the fixing groove, a spring is fixedly installed in the first groove, a clamping rod is fixedly installed at one end of the spring, a pull rod is fixedly installed at one end of the clamping rod, and one end of the pull rod penetrates through the base and is fixedly connected with the pull block.

Preferably, the connector lug surface is equipped with the protective sheath, protective sheath fixed connection mounting panel, a plurality of first mounting holes have been seted up on the mounting panel surface, a plurality of second mounting holes have been seted up to the base bottom surface.

Preferably, the outer surface of the base is provided with a movable hole matched with the pull rod, and the movable hole is communicated with the first groove.

Preferably, the sizes of the first groove, the second groove and the through hole are matched with the size of the clamping rod.

Preferably, the pull rod and the pull block are both made of insulating materials.

Compared with the prior art, the utility model can achieve the following beneficial effects:

1. according to the utility model, the fixing block, the through hole, the fixing groove, the first groove, the pull rod, the clamping rod, the spring, the pull block and the second groove are arranged, so that the cap and the base can be conveniently fixed and detached, and the damaged elements in the acoustic surface filter can be conveniently maintained;

2. according to the utility model, by arranging the protective sleeve, the mounting plate, the first mounting hole and the second mounting hole, the terminal can be protected and prevented from being damaged when the acoustic surface filter is not used, and the protective sleeve is convenient to mount and dismount.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the base, connector lug, pull block and second mounting hole of the present invention;

FIG. 3 is a schematic structural view of a cap, a fixing block and a through hole of the present invention;

FIG. 4 is a cross-sectional view of a base according to the present invention;

FIG. 5 is a schematic view of the protective sheath, mounting plate and first mounting hole of the present invention;

wherein: 1. a cap; 2. a base; 3. a connector lug; 4. a fixed block; 5. a through hole; 6. fixing grooves; 7. a first groove; 8. a pull rod; 9. a clamping rod; 10. a spring; 11. pulling the block; 12. a second groove; 13. a protective sleeve; 14. mounting a plate; 15. a first mounting hole; 16. and a second mounting hole.

Detailed Description

The present invention will be further described with reference to specific embodiments for the purpose of facilitating an understanding of technical means, characteristics of creation, objectives and functions realized by the present invention, but the following embodiments are only preferred embodiments of the present invention, and are not intended to be exhaustive. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents and the like used in the following examples are commercially available unless otherwise specified.

Example (b):

as shown in figures 1-5, the utility model provides an annular low-insertion-loss sound meter filter, which comprises an emitting cover 1, a base 2 and connector lugs 3, wherein a plurality of connector lugs 3 are fixedly installed at the bottom of the base 2, a plurality of fixing blocks 4 provided with through holes 5 are fixedly installed at the bottom surface of the emitting cover 1, a plurality of fixing grooves 6 are formed in the top surface of the base 2, a first groove 7 is formed in one side of the inner wall of each fixing groove 6, a second groove 12 is formed in the other side of the inner wall of each fixing groove 6, a spring 10 is fixedly installed in each first groove 7, a clamping rod 9 is fixedly installed at one end of each spring 10, a pull rod 8 is fixedly installed at one end of each clamping rod 9, a movable hole matched with the pull rod 8 is formed in the outer surface of the base 2, the pull rod 8 can move in the movable hole conveniently and is communicated with the first groove 7, one end of the pull rod 8 penetrates through the base 2 and is fixedly connected with a pull block 11, the pull block 11 is pulled to conveniently drive the pull rod 8 to move, the first groove 7, The sizes of the second groove 12 and the through hole 5 are matched with the size of the clamping rod 9, and the pull rod 8 and the pull block 11 are made of insulating materials;

when elements in the acoustic watch filter are damaged, the pull block 11 is pulled to drive the pull rod 8 to move, the pull rod 8 drives the clamping rod 9 to move close to the movable hole, the clamping rod 9 drives the spring 10 to compress, so that the clamping rod 9 moves out of the second groove 12 and completely enters the first groove 7 through the through hole 5, the fixed block 4 is conveniently taken out of the fixed groove 6, the cap 1 and the base 2 are conveniently separated, and the damaged elements on the base 2 are conveniently maintained;

after the maintenance finishes, equally, pull earlier and draw piece 11, finally make kelly 9 enter into first recess 7 completely, insert fixed block 4 in fixed slot 6, through-hole 5 and first recess 7 and second recess 12 all communicate this moment, loosen and draw piece 11, spring 10 resets and rebounds, drive kelly 9 one end activity and go out first recess 7, get into in second recess 12 through-hole 5, thereby fix fixed block 4 in fixed slot 6, thereby accomplished the refastening to emitting lid 1 and base 2.

As shown in fig. 1 and 5, this embodiment also discloses that the outer surface of the connector lug 3 is provided with a protective sheath 13 for protection, the protective sheath 13 is fixedly connected to the mounting plate 14, the surface of the mounting plate 14 is provided with a plurality of first mounting holes 15, the bottom surface of the base 2 is provided with a plurality of second mounting holes 16, and the mounting plate 14 can be conveniently fixed and detached by using screws to pass through the first mounting holes 15 and the second mounting holes 16, so that the protective sheath 13 can be conveniently taken and placed at any time.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an acoustic meter wave filter of low insertion loss of annular, is including emitting lid (1), base (2) and connector lug (3), a plurality of connector lugs (3) of base (2) bottom fixed mounting, its characterized in that: a plurality of fixed blocks (4) provided with through holes (5) are fixedly mounted on the bottom surface of the cap (1), a plurality of fixed grooves (6) are formed in the top surface of the base (2), and clamping rods (9) capable of axially displacing are arranged inside the base (2).

2. The annular low-insertion-loss acoustic surface filter according to claim 1, wherein: first recess (7) have been seted up to fixed slot (6) inner wall one side, second recess (12) have been seted up to fixed slot (6) inner wall opposite side, fixed mounting spring (10) in first recess (7), spring (10) one end fixed mounting kelly (9), kelly (9) one end fixed mounting pull rod (8), base (2) fixed connection is passed to pull rod (8) one end draws piece (11).

3. The annular low-insertion-loss acoustic surface filter according to claim 1, wherein: the outer surface of the connector lug (3) is provided with a protective sleeve (13), the protective sleeve (13) is fixedly connected with a mounting plate (14), the surface of the mounting plate (14) is provided with a plurality of first mounting holes (15), and the bottom surface of the base (2) is provided with a plurality of second mounting holes (16).

4. The annular low-insertion-loss acoustic surface filter according to claim 2, wherein: the outer surface of the base (2) is provided with a movable hole matched with the pull rod (8), and the movable hole is communicated with the first groove (7).

5. The annular low-insertion-loss acoustic surface filter according to claim 2, wherein: the size of the first groove (7), the size of the second groove (12) and the size of the through hole (5) are matched with the size of the clamping rod (9).

6. The annular low-insertion-loss acoustic surface filter according to claim 2, wherein: the pull rod (8) and the pull block (11) are made of insulating materials.