CN115275556A

CN115275556A - Resonance rod and radio frequency filter

Info

Publication number: CN115275556A
Application number: CN202210988662.9A
Authority: CN
Inventors: 王威; 葛文; 孙兴华
Original assignee: Kunshan Luxshare RF Technology Co Ltd
Current assignee: Kunshan Luxshare RF Technology Co Ltd
Priority date: 2022-08-17
Filing date: 2022-08-17
Publication date: 2022-11-01
Also published as: TWI831476B; TW202410541A

Abstract

The invention relates to the technical field of communication filters, and particularly discloses a resonance rod and a radio frequency filter. The resonance rod comprises a cylinder body and a turnplate, wherein a cylinder body groove is formed in the top end of the cylinder body, and a communicating hole is communicated with the bottom of the cylinder body groove; the tilting tray is annularly connected to the top end of the barrel, the bottom end of the tilting tray is fixedly connected with the outer side wall of the barrel through reinforcing ribs, the reinforcing ribs are arranged in a plurality, and the plurality of reinforcing ribs are uniformly distributed at intervals at the edge of the barrel. This resonance rod can strengthen the intensity and the rigidity of resonance rod through the mode that sets up the strengthening rib under the prerequisite that does not influence the frequency, has reduced the askew risk of twisting the deformation of resonance rod to the reliability of work has been promoted.

Description

Resonance rod and radio frequency filter

Technical Field

The invention relates to the technical field of communication filters, in particular to a resonance rod and a radio frequency filter.

Background

The resonance rod is a necessary part used on the aerospace radio and television communication base station equipment, and is also named as a vibrator, a reflection rod, a harmonic oscillator, a resonance column and the like. The resonance rod comprises a cylinder body and a tilting disk fixedly connected with the cylinder body, and the tilting disk can achieve the effects of reducing frequency and improving power.

In the prior art, the traditional resonance rod is formed by adopting a stretching process, the diameter of the tilting disc is large, the material thickness is thin, and the resonance rod is easy to deform in the links of stretching forming, electroplating, transportation and the like, so that the frequency is influenced, the depth of the debugging screw rod is increased, the emptying is realized, and the batch production of the resonance rod is not facilitated.

Disclosure of Invention

The invention aims to provide a resonance rod and a radio frequency filter, so as to enhance the strength and rigidity of the resonance rod, reduce the risk of distortion of the resonance rod and improve the working reliability.

In order to achieve the purpose, the invention adopts the following technical scheme:

a resonance rod comprises a cylinder body and a turnover disc; a barrel groove is formed in the top end of the barrel, and a communicating hole penetrates through the bottom of the barrel groove; the tilting tray is annularly connected to the top end of the barrel, the bottom end of the tilting tray is fixedly connected with the outer side wall of the barrel through reinforcing ribs, and the reinforcing ribs are arranged in a plurality of and are uniformly distributed at intervals on the edge of the barrel.

As the preferred technical scheme of the resonance rod, the turnover plate is an annular plate, and the reinforcing ribs are fixedly connected to the lower plate surface of the turnover plate.

As the preferred technical scheme of resonance bar, the barrel groove is cylindrical, the whole thickness of barrel is unanimous, and is a plurality of the strengthening rib centers on the axis equipartition setting of barrel.

As the preferred technical scheme of the resonance rod, the reinforcing ribs form rib grooves which are communicated with the groove tops of the cylinder grooves.

As a preferable technical solution of the resonance rod, a groove depth of the rib groove gradually increases from an edge of the rib groove to a center of the rib groove.

As the preferred technical scheme of the resonance rod, the cylinder body and the turnplate are integrally formed.

As the preferable technical scheme of the resonance rod, three reinforcing ribs are arranged.

As the preferred technical scheme of the resonance rod, the edge ring of the turnover disc is provided with a bent edge, and the bent edge is bent downwards.

As the preferred technical scheme of resonance bar, the tank bottom of barrel groove is equipped with the bellying protrudingly, the bellying has formed protruding recess, protruding recess pass through the intercommunicating pore with the barrel groove intercommunication.

A radio frequency filter comprises a supporting seat, a bearing table and the resonance rod, wherein the supporting seat and the resonance rod are installed on the bearing table, and the supporting seat and the resonance rod are connected through a tapping sheet.

The invention has the beneficial effects that:

the resonance rod ensures the smooth work of the resonance rod by means of the arrangement of the cylinder body and the tilting disk; through the mode that sets up the strengthening rib, can be under the prerequisite that does not influence resonance bar frequency, the intensity and the rigidity of reinforcing resonance bar reduce the askew risk of twisting the deformation of resonance bar to promote the reliability of work, improved the product competitiveness of resonance bar.

Drawings

Fig. 1 is a schematic structural diagram of a resonant rod according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of a resonant bar according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a radio frequency filter according to an embodiment of the present invention;

fig. 4 is a cross-sectional view of a resonant bar according to a second embodiment of the present invention;

fig. 5 is a cross-sectional view of a resonant bar according to a third embodiment of the present invention.

In the figure:

100. a resonant rod; 101. a barrel groove; 102. a communicating hole; 110. a barrel; 111. a boss portion; 112. a raised groove; 120. turning over the tray; 121. a rib groove; 122. bending the edge;

210. a connector; 220. a supporting base; 230. a seal ring; 240. a first tap piece; 250. a second tap piece; 260. a bearing platform; 261. a receiving cavity.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

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 technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

Example one

As shown in fig. 1 and 2, the present embodiment provides a resonant bar 100 including a cylinder 110 and a tilting disk 120; a cylinder groove 101 is formed at the top end of the cylinder 110, and a communicating hole 102 penetrates through the bottom of the cylinder groove 101; the tilting disk 120 is connected to the top end of the cylinder 110 in an annular manner, the bottom end of the tilting disk 120 is fixedly connected to the outer side wall of the cylinder 110 through a plurality of reinforcing ribs, and the plurality of reinforcing ribs are uniformly distributed at intervals on the edge of the cylinder 110.

The resonant rod 100 ensures the smooth work of the resonant rod 100 by virtue of the arrangement of the cylinder body 110 and the tilting disk 120; through the mode that sets up the strengthening rib, can be under the prerequisite that does not influence resonance bar 100 frequency, reinforcing resonance bar 100's intensity and rigidity reduce the askew risk of twisting the deformation of resonance bar 100 to promote the reliability of work, improved resonance bar 100's product competitiveness.

In the present embodiment, the turn-over plate 120 is an annular plate, and the reinforcing rib is fixedly connected to the lower plate surface of the turn-over plate 120. The structure is improved simply and reliably, the structure of the tilting tray 120 is simplified, the layout of the cylinder body 110 and the tilting tray 120 is optimized, the occupied space of the resonance rod 100 is reduced, and the processing difficulty of the resonance rod 100 is reduced.

Preferably, the barrel groove 101 is cylindrical, the thickness of the barrel 110 is uniform, the thickness of the barrel 110 is the same everywhere, and a plurality of reinforcing ribs are uniformly distributed around the axis of the barrel 110. The design is simple and reliable, the smooth work of the resonance rod 100 is guaranteed, and the uniform distribution of the reinforcing ribs can be guaranteed.

The integral thickness of the cylinder 110 is consistent, and the tilting disk 120 is designed to be an annular plate, so that the problem of uneven stress caused by the thickness difference of walls at various positions on the resonant rod 100 is solved, and the risk of distortion and deformation of the resonant rod 100 is further reduced.

In this embodiment, the reinforcing ribs form rib grooves 121, and the rib grooves 121 communicate with the groove tops of the cylinder grooves 101.

Further, the groove depth of the rib groove 121 gradually increases from the edge of the rib groove 121 to the center of the rib groove 121. Specifically, the thickness of the reinforcing bead is equal everywhere.

The setting of muscle recess 121 can make things convenient for the stretch forming of strengthening rib under the prerequisite that does not influence resonance bar 100 frequency, reduces the processing degree of difficulty of strengthening rib, ensures that the thickness of resonance bar 100 each department is even.

In the present embodiment, the cylinder 110 and the tray 120 are integrally formed. The integrally formed design greatly simplifies the production process of the resonant rod 100, improves the processing efficiency and reduces the production cost.

In this embodiment, through the design of adjusting at the mold for processing resonant rod 100, the structure corresponding to the reinforcing rib is added at the stretching position of the mold, so that not only can resonant rod 100 be directly stretch-formed through the stretching process, but also the reinforcing rib on resonant rod 100 can be ensured to be smoothly formed.

In particular, the present embodiment can be applied to the processing of a sheet material with a thickness of 0.6 mm, and optionally, the sheet material required for the processing of a metal material may be thinner, and the specific thickness is determined by a manufacturer. The processing mode can save the using amount of the plate molding material of the resonance rod 100 on the premise of not increasing the part material, thereby reducing the weight of the resonance rod 100.

Preferably, there are three ribs. In other embodiments of this embodiment, two, four, five, six, 8230are provided for the reinforcing ribs, the specific number is determined by the manufacturer, and the selection manner is common knowledge in the art, and is well known by those skilled in the art, which will not be described herein.

As shown in fig. 3, the embodiment further provides a radio frequency filter, which includes a supporting base 220, a carrying platform 260 and the resonant rod 100, wherein the supporting base 220 and the resonant rod 100 are both mounted on the carrying platform 260, and the supporting base 220 is connected to the resonant rod 100 through a tap piece.

The radio frequency filter has the advantages of simple and reliable structure, stable work and low production cost, and can smoothly complete the filtering operation of radio signals.

In this embodiment, an accommodating cavity 261 is formed at the top end of the bearing table 260, the supporting seat 220 is inserted into the accommodating cavity 261, a sealing ring 230 is clamped between the supporting seat 220 and the bearing table 260, a connector 210 is fixedly connected to the supporting seat 220, and the supporting seat 220 is connected to an external component through the connector 210; the tap pieces comprise a first tap piece 240 and a second tap piece 250, the first tap piece 240 is connected to the supporting base 220, the second tap piece 250 is connected to the resonant rod 100, and the first tap piece 240 is connected to the second tap piece 250.

Specifically, the material of the carrier 260 is metal or plastic.

Preferably, the carrier 260 is coupled to the communication hole 102 of the resonant bar 100. Specifically, the communication hole 102 is located in the middle of the bottom of the cylinder tank 101. The above design ensures a stable positioning of the resonant bar 100 on the carrier table 260.

The design is not only suitable for the radio frequency filter, but also can be applied to a duplexer, a combiner or a tower amplifier.

Example two

As shown in fig. 4, the resonant rod 100 of the second embodiment is substantially the same as the first embodiment, except that the edge of the flap 120 is annularly provided with a bent edge 122, and the bent edge 122 is bent downward.

The structural improvement can adjust the working effect of the resonant rod 100 on the premise of not influencing the frequency of the resonant rod 100, so that the resonant rod 100 can be applied to a specific working environment.

The embodiment also provides a radio frequency filter, including supporting seat, plummer and foretell resonance rod, supporting seat and resonance rod are all installed on the plummer, and the supporting seat is connected through taking a percentage the piece with the resonance rod.

EXAMPLE III

As shown in fig. 5, the resonant rod 100 of the third embodiment is substantially the same as the second embodiment, except that a projection 111 is protruded from the bottom of the cylindrical groove 101, the projection 111 forms a projection groove 112, and the projection groove 112 communicates with the cylindrical groove 101 through the communication hole 102.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A resonant bar, comprising:

the cylinder body (110) is provided with a cylinder body groove (101) at the top end, and a communicating hole (102) penetrates through the bottom of the cylinder body groove (101);

the tilting tray (120) is connected to the top end of the barrel (110) in a ring mode, the bottom end of the tilting tray (120) is fixedly connected with the outer side wall of the barrel (110) through reinforcing ribs, the reinforcing ribs are arranged in a plurality of and are uniformly distributed at intervals on the edge of the barrel (110).

2. The resonant bar according to claim 1, characterized in that the turn-over plate (120) is an annular plate, and the reinforcing rib is fixedly connected to the lower plate surface of the turn-over plate (120).

3. The resonance bar according to claim 1, wherein the cylinder groove (101) is cylindrical, the entire thickness of the cylinder (110) is uniform, and a plurality of the reinforcing ribs are uniformly arranged around the axis of the cylinder (110).

4. The resonance bar according to claim 1, wherein the reinforcing ribs form rib grooves (121), the rib grooves (121) communicating with the groove tops of the barrel grooves (101).

5. The resonance bar according to claim 4, wherein the groove depth of the rib groove (121) is gradually increased from the edge of the rib groove (121) to the center of the rib groove (121).

6. The resonant bar according to claim 1, characterized in that the cylinder (110) and the turn-up plate (120) are integrally formed.

7. The resonant bar of claim 1, wherein there are three reinforcing ribs.

8. The resonance bar according to any one of claims 1 to 7, wherein the edge of the flap (120) is surrounded by a bent edge (122), and the bent edge (122) is bent downward.

9. The resonance bar according to claim 8, wherein a groove bottom of the cylinder groove (101) is convexly provided with a convex portion (111), the convex portion (111) forms a convex groove (112), and the convex groove (112) communicates with the cylinder groove (101) through the communication hole (102).

10. A radio frequency filter comprising a support base (220), a carrier (260) and a resonant rod according to any of claims 1-9, wherein the support base (220) and the resonant rod are mounted on the carrier (260), and the support base (220) and the resonant rod are connected by a tap piece.