CN207426106U - A kind of Coaxial resonator - Google Patents

Abstract

The utility model discloses a kind of Coaxial resonator, include the cavity of a closing, and resonant column within the cavity and frequency tune spiral shell, the bottom of resonant column is fixed on the bottom wall of cavity, top is provided with tuned window top-down and in resonant column, it is provided on the roof of cavity for the tune screw hole of Mounting frequency tune spiral shell, it is fixed at the top of frequency tune spiral shell in the tune screw hole, bottom is extend into tuned window, tuned window is with adjusting screw hole that can be machined in the same process, reduce manufacturing procedure, reduce processing cost, and tuned window designs in resonant column, reduce resonance column volume.

Description

A kind of Coaxial resonator

Technical field

The utility model is related to a kind of Coaxial resonators, can reduce manufacturing procedure more particularly, to one kind, reduce volume Coaxial resonator.

Background technology

Coaxial resonator is the elementary cell for forming coaxial cavity filter and combiner, is widely used in wireless communication In system.With the continuous development of the communication technology, the volume small of communication equipment.Existing Coaxial resonator is universal Volume is larger, and structure design is not compact enough.

In addition, it is disclosed in China Patent Publication No. is CN107210505A a kind of with the inductance and electricity that mutually compensate for Hold the U-shaped notching construction of the wave filter, in that patent resonant column of the series connection of coupling, the volume of resonant column can be made to become larger while whole The volume of a product will become larger, because the die sinking of the structure of resonant column, washing knife and the manufacturing processes such as processing to it, it is necessary to U-shaped The thickness of two side there are certain requirements, if too thin be easily broken in process, while complex procedures, processing cost Greatly.

Therefore, it is necessary to study a kind of novel coaxial chamber resonator structure, deposited with the U-shaped notching construction for solving above-mentioned resonant column Volume it is big, manufacturing procedure is complicated, processing cost is big the shortcomings of.

Utility model content

The purpose of the utility model is to overcome the defects of the prior art, provide a kind of reduction volume and manufacturing process, drop The Coaxial resonator of low processing cost.

To achieve the above object, the utility model proposes following technical solutions：A kind of Coaxial resonator, including a closing Cavity and resonant column within the cavity and frequency tune spiral shell, the resonant column include bottom and top, the bottom of the resonant column Portion is fixed on the bottom wall of cavity, and tuned window top-down and in resonant column, institute are provided at the top of the resonant column The tune screw hole being provided on the roof of cavity for Mounting frequency tune spiral shell is stated, the tune spiral shell is fixed at the top of the frequency tune spiral shell In hole.

Preferably, the roof and bottom wall of the resonant column and cavity are integrally formed.

Preferably, the top outer diameter of the resonant column or width are more than the bottom outer diameter or width of resonant column.

Preferably, the frequency tune spiral shell includes the top threaded portion of one and threaded shank, the top threaded portion are fixed on It adjusts in screw hole, the threaded shank is extend into tuned window.

Preferably, the diameter of the top threaded portion is more than the diameter of threaded shank.

Preferably, the deflector hole with tuned window perforation is additionally provided on a side of the resonant column.

Preferably, the bottom of the deflector hole and tuned window is run through.

Preferably, the tuned window with adjust screw hole aperture is identical and one-pass molding.

Preferably, the diameter of the deflector hole is less than or equal to the internal diameter of tuned window.

Preferably, the frequency tune spiral shell is self-locking tune spiral shell.

The beneficial effects of the utility model are：

1st, tuned window is arranged in resonant column by the utility model, compared to existing U-shaped notching construction, the utility model tune The outer ring in humorous hole is an entirety, and the defects of easily snapping off also is not present in process, therefore is meeting the premise of performance Under, the narrowed width of resonant column, volume can be become smaller, then the volume of entire product will reduce.

2nd, resonant column and cavity are integrally formed, the tune screw hole of tuned window and cavity on resonant column can one-pass molding, save Process, and then reduce processing cost.

3rd, the deflector hole being conducted with tuned window is provided on resonant column, when resonant column needs plating, electroplate liquid can be with It is flowed out from deflector hole, improves electroplating efficiency.

Description of the drawings

Fig. 1 is the schematic cross-sectional view of the utility model Coaxial resonator；

Fig. 2 is the dimensional structure diagram of the utility model.

Reference numeral：

1st, metal cavity, 11, roof, 12, bottom wall, 13, side wall, 2, resonant column, 21, bottom, 22, top, 3, self-locking tune Spiral shell, 31, top threaded portion, 32, threaded shank, 4, adjust screw hole, 5, tuned window, 6, deflector hole.

Specific embodiment

Below in conjunction with the attached drawing of the utility model, the technical solution of the utility model embodiment is carried out clear, complete Description.

A kind of revealed Coaxial resonator of the utility model by changing the structure of resonant column, reduces volume, reduces Manufacturing procedure, and processing cost is reduced, it is applicable to coaxial cavity filter and combiner.

With reference to shown in Fig. 1 and Fig. 2, the revealed a kind of Coaxial resonator of the utility model embodiment, including a closing Metal cavity 1, resonant column 2 and self-locking tune spiral shell 3, whole metal cavity 1 can be cylinder or rectangular parallelepiped structure, include integral Molding outer frame body and front and rear cover plate (not shown), the outer frame body include roof 11, bottom wall 12 and connection roof 11, bottom wall 12 Two side 13, one is formed on the roof 11 of metal cavity for installing the tune screw hole 4 of self-locking tune spiral shell 3.Resonant column 2 and self-locking tune Spiral shell 3 is placed in the metal cavity 1, it is preferable that resonant column 2 and the outline border body by integral forming of metal cavity 1 reduce processing work Sequence.

Wherein, resonant column 2 includes the bottom 21 of one and metal cavity is fixed in top 22, the bottom 21 of resonant column vertically Bottom wall 12 on, at centre that is general but being not limited to be fixed on the bottom wall 12 of metal cavity.The top 22 of resonant column and gold The roof 11 for belonging to cavity does not contact, and there is tuning gap between the two.The top 22 of resonant column sets a tuned window 5, the tuning (i.e. top-down) extends to form straight down for the upper surface at the top 21 of 5 self-resonance column of hole, and tuned window 21 is located at resonant column 2 Interior, i.e., the aperture of tuned window 5 is less than the outer diameter of resonant column 2.Whole resonant column 2 can be the structures such as cylinder or cuboid, tune Hole 5 is generally cylindrical structure.Preferably, the top outer diameter of resonant column 2 is more than the bottom outer diameter of resonant column 2.

This tuned window 4 is arranged at the structure in resonant column 2, compared to existing U-shaped notching construction, the utility model tuning The outer ring in hole 5 is an entirety, and the defects of easily snapping off also is not present in process, therefore is meeting the premise of performance Under, the narrowed width of resonant column 2, volume can be become smaller, then the volume of entire product will reduce.

Self-locking tune spiral shell 3 coordinates with the tuned window 5 on resonant column 2, is tuned.Specifically, in the present embodiment, self-locking tune spiral shell 3 include the top threaded portion 31 of one and threaded shank 32, and the diameter of top threaded portion 31 is more than the diameter of threaded shank 32.Its In, top threaded portion 31 is fixed in the tune screw hole 4 on metal cavity roof, and the lower end of threaded shank 32 is extend into tuned window 5, According to the depth adjustment frequency stretched into.Self-locking tune spiral shell 3 can be replaced with general frequency tune spiral shell, as long as tuber function can be realized i.e. It can.

Preferably, tuned window 5 is identical with adjusting the aperture of screw hole 4 so that the two can machine in the same process, reduce Manufacturing procedure, and then reduce processing cost.

Further, the deflector hole 6 penetrated through with tuned window 5 is additionally provided on the lateral surface of resonant column 2, when resonant column 2 When needing plating, electroplate liquid can be flowed out from deflector hole 6, improve electroplating efficiency.In the present embodiment, 6 self-resonance column 2 of deflector hole Just extended to form towards 5 direction of tuned window, also can extend to and tune from the arbitrary one side in addition to front of resonant column 2 Hole 5 turns on, and deflector hole 6 and the bottom of tuned window 5 are run through, and electroplate liquid is so contributed to all to flow out.Deflector hole 6 is according to need It sets, that is to say, that deflector hole 6 can not also be set on resonant column 2.Preferably, the diameter of deflector hole 6, which is less than or equal to, adjusts The internal diameter in humorous hole 6.

The technology contents and technical characteristic of the utility model have revealed that as above, however those skilled in the art still may be used Teaching and announcement that can be based on the utility model and make a variety of replacements and modification without departing substantially from the utility model spirit, therefore, this Utility model protection scope should be not limited to the revealed content of embodiment, and should include the various replacements without departing substantially from the utility model And modification, and covered by present patent application claim.

Claims (10)

1. a kind of Coaxial resonator, cavity and resonant column within the cavity and frequency tune spiral shell including a closing are described humorous The column that shakes includes bottom and top, and the bottom of the resonant column is fixed on the bottom wall of cavity, it is characterised in that：The resonant column Top is provided with tuned window top-down and in resonant column, is provided on the roof of the cavity for Mounting frequency tune The tune screw hole of spiral shell is fixed at the top of the frequency tune spiral shell in the tune screw hole, and bottom is extend into the tuned window.

2. Coaxial resonator according to claim 1, which is characterized in that the roof and bottom wall of the resonant column and cavity It is integrally formed.

3. Coaxial resonator according to claim 1, which is characterized in that the top outer diameter or width of the resonant column are big In the bottom outer diameter or width of resonant column.

4. Coaxial resonator according to claim 1, which is characterized in that the frequency tune spiral shell includes the top spiral shell of one Line portion and threaded shank, the top threaded portion, which is fixed on, adjusts in screw hole, and the threaded shank is extend into tuned window.

5. Coaxial resonator according to claim 4, which is characterized in that the diameter of the top threaded portion is more than screw rod The diameter in portion.

6. Coaxial resonator according to claim 1, which is characterized in that also set up on a side of the resonant column There is the deflector hole with tuned window perforation.

7. Coaxial resonator according to claim 6, which is characterized in that the bottom of the deflector hole and tuned window is passed through It wears.

8. Coaxial resonator according to claim 1, which is characterized in that the tuned window is identical with adjusting the aperture of screw hole And one-pass molding.

9. Coaxial resonator according to claim 6, which is characterized in that the diameter of the deflector hole, which is less than or equal to, to be adjusted The internal diameter in humorous hole.

10. Coaxial resonator according to claim 1, which is characterized in that the frequency tune spiral shell is self-locking tune spiral shell.