WO2013189074A1 - 腔体滤波器及其制造方法 - Google Patents
腔体滤波器及其制造方法 Download PDFInfo
- Publication number
- WO2013189074A1 WO2013189074A1 PCT/CN2012/077340 CN2012077340W WO2013189074A1 WO 2013189074 A1 WO2013189074 A1 WO 2013189074A1 CN 2012077340 W CN2012077340 W CN 2012077340W WO 2013189074 A1 WO2013189074 A1 WO 2013189074A1
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- WIPO (PCT)
- Prior art keywords
- cavity
- hole
- tuning screw
- rod
- filter
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/207—Hollow waveguide filters
- H01P1/208—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P7/00—Resonators of the waveguide type
- H01P7/06—Cavity resonators
Definitions
- the present invention relates to the field of communication devices, and in particular, to a cavity filter and a method of fabricating the same. Background technique
- the cavity filter is widely used in the field of communications as a frequency selective device, especially in the field of radio frequency communication.
- a filter is used to select a communication signal to filter out clutter or interference signals outside the frequency of the communication signal.
- the cavity of the cavity filter of the prior art is realized by an machining or die casting process. Therefore, the weight of the existing cavity filter is too heavy, and the cost of manufacturing the cavity filter is high. Summary of the invention
- a technical problem to be solved by embodiments of the present invention is to provide a cavity filter and a method of fabricating the same to reduce the weight of the cavity filter and reduce the cost of the cavity filter.
- a cavity filter includes a lower cavity, an upper cavity covering the lower cavity, and a resonant rod, and at least one of the upper cavity and the lower cavity is formed by stamping or forging a plate,
- the upper cavity includes a first cavity
- the lower cavity includes a second cavity corresponding to the first cavity
- the second cavity forms a resonant cavity together with the corresponding first cavity to receive the resonant rod .
- a method of manufacturing a cavity filter comprising:
- the upper cavity includes a first cavity
- the upper cavity and the lower cavity are assembled to form the cavity filter, wherein the first cavity and the second cavity together form a resonant cavity to receive the resonant rod.
- the cavity filter of the present invention is assembled from the upper cavity and the lower cavity, and the first cavity and the second cavity together form the resonant cavity to receive the resonant rod .
- the upper cavity and the lower cavity are obtained by stamping or forging the plate material, so that the weight and manufacturing cost of the cavity filter formed are compared with the existing cavity formed by machining or die casting.
- the filter is significantly reduced.
- the structure of the cavity filter of the present invention also reduces the difficulty of stamping or forging the cavity of the cavity filter.
- FIG. 1 is an exploded perspective view of a cavity filter according to a first preferred embodiment of the present invention
- Figure 2 is a partial cross-sectional view showing a cavity filter according to a first preferred embodiment of the present invention
- Figure 3 is a partial cross-sectional view showing a cavity filter according to a second preferred embodiment of the present invention.
- FIG. 4 is a flow chart showing a method of manufacturing a cavity filter according to a first preferred embodiment of the present invention.
- Fig. 5 is a flow chart showing a method of manufacturing a cavity filter according to a second preferred embodiment of the present invention. detailed description
- a cavity filter 100 according to a first preferred embodiment of the present invention includes an upper cavity 10, a lower cavity 20, a plurality of resonant rods 30, and a plurality of tuning screws 40.
- the cavity filter 100 also includes other components such as a coupling structure, etc. Since other components such as coupling structures are prior art, they are not described in detail herein.
- the upper cavity 10 includes a plurality of first cavities 12, wherein each of the first cavities 12 corresponds to a tuning screw 40.
- the upper cavity 10 is formed by stamping on a sheet of material using a first die or by forging.
- the top of the first cavity 12 is formed with a hole (not shown) for mounting the resonant screw 40.
- the material of the plate material may be aluminum, copper, steel, iron, aluminum alloy or magnesium alloy.
- the first mold is developed in accordance with the structural characteristics of the upper chamber 10. In other embodiments, the upper cavity 10 may also be formed by drawing or sheet metal (forming).
- the lower cavity 20 includes a plurality of second cavities 22, wherein each of the second cavities 22 corresponds to a first cavity 12 and a resonant rod 30.
- the lower cavity 20 is formed by stamping on a sheet of material using a second mold or by forging.
- the material of the plate may be aluminum, copper, steel, iron, aluminum alloy or magnesium alloy. Kim et al.
- the second mold is developed in accordance with the structural characteristics of the lower chamber 20. In other embodiments, the lower cavity 20 may also be formed by drawing or sheet metal (forming).
- the resonant rod 30 is coupled to the lower cavity 20 and received in the corresponding second cavity 22.
- the resonant rod 30 is integrally formed with the lower cavity 20.
- the tuning screw 40 cooperates with a hole in the top of the first cavity 12 to be mounted on the top of the first cavity 12. Among them, one tuning screw 40 corresponds to one resonant rod 30.
- the tuning screw 40 When assembled, the tuning screw 40 is passed through a hole in the top of the first cavity 12, and a nut 50 is sleeved on the tuning screw 40 to lock with the tuning screw 40, thereby A tuning screw 40 is mounted to the upper cavity 10. At this time, one end of the tuning screw 40 projects into the corresponding first cavity 12. Other components, such as a coupling structure, are mounted within the lower cavity 20. The upper cavity 10 and the lower cavity 20 are assembled such that the upper cavity 10 covers the lower cavity 20. At this time, each of the first cavities 12 and the corresponding second cavities 22 form a resonant cavity 60. The resonant rod 30 is housed in the resonant cavity 60.
- the end of the tuning screw 40 extending into the first cavity 12 is maintained at a predetermined interval from the corresponding resonant rod 30.
- the spacing between one end of the tuning screw 40 extending into the first cavity 12 and the corresponding resonant rod 30 can be adjusted by screwing the tuning screw 40 to adjust the RF parameters of the cavity filter 100.
- the manner in which the upper cavity 10 and the lower cavity 20 are assembled includes a screw connection, a welding, and a riveting manner.
- the nut 50 is mounted to the upper cavity 10 by welding or riveting for locking with the tuning screw 40.
- the height ratio of the first cavity 22 to the second cavity 12 is 1:1.
- the hole is a through hole.
- the height ratio of the first cavity 12 to the second cavity 22 may be any ratio, that is, the first cavity 22 and the second cavity may be according to actual needs.
- the height ratio of 12 is adjusted.
- the hole at the top of the first cavity 12 may also be a screw hole.
- the screw hole can be engaged with the tuning screw 40, and the nut 50 is used to reinforce the locking of the tuning screw 40 with the upper cavity 10.
- the nut 50 may be omitted when it is not necessary to securely lock the tuning screw 40 with the screw hole of the upper cavity 10.
- the number of the first cavity 12, the second cavity 22, the resonant rod 30 and the tuning screw 40 can be adjusted according to actual conditions.
- a cavity filter 200 is similar to the cavity filter 100 of the first preferred embodiment, and the difference between the two is only in the second preferred implementation.
- the resonant rod 220 of the cavity filter 200 is formed by stamping or forging from a single sheet.
- the resonant rod 220 is coupled to the lower cavity 20 in a split coupling manner.
- the resonant rod 220 is attached by screwing, welding or riveting.
- the resonant rod may include a stem portion and a fold portion.
- the rod portion and the folded portion may be integrally formed and formed by stamping or forging a sheet of material.
- the stem portion and the folded portion may also be coupled separately.
- the folded portion is attached to the end of the stem by screwing, welding or riveting.
- the resonant rod may be integrally formed with the lower cavity 20.
- a method for manufacturing a cavity filter according to a first preferred embodiment of the present invention includes:
- Step 101 providing a sheet of material on which the upper cavity 10 is stamped or forged.
- the material of the plate material may be aluminum, copper, steel, iron, aluminum alloy or magnesium alloy.
- the 10 includes a plurality of first cavities 12, and a top portion of each of the first cavities 12 is formed with a hole for mounting the tuning screw 40.
- Step 102 providing a sheet of material on which the lower cavity is stamped or forged.
- the material of the plate material may be aluminum, copper, steel, iron, aluminum alloy or magnesium alloy.
- the lower cavity 20 includes a plurality of second cavities 22, and the second cavity 22 corresponds to the first cavity 12.
- a resonant rod 30 is housed in each of the second cavities 22.
- the resonant rod 30 is integrally formed with the lower cavity 20 and is formed by stamping or forging a sheet of material.
- the resonant rod 220 can be formed from a single sheet of stamping or forging.
- the resonant rod 220 is coupled to the lower chamber 20 in a split coupling manner.
- the resonant rod 220 is attached to the lower chamber 20 by screwing, welding or riveting. (See Figure 3)
- the resonant rod may include a rod portion and a fold portion.
- the folded portion may be integrally formed with the rod portion, that is, the folded portion and the rod portion are formed by stamping or forging a piece of sheet material.
- the fold portion may also be coupled to the stem portion body. The folded portion is attached to the end of the stem by threading, welding or riveting.
- Step 103 assembling the upper cavity 10 and the lower cavity 20 to form the cavity filter
- a first cavity 12 corresponds to a second cavity 22 to collectively form the cavity 60 to accommodate a resonant rod 30.
- the manner in which the upper chamber 10 and the lower chamber 20 are assembled includes screwing, welding or riveting.
- a method for manufacturing a cavity filter according to a second preferred embodiment of the present invention includes: Step 201, providing a plate on which the upper cavity 10 is stamped or forged.
- the material of the plate material may be aluminum, copper, steel, iron, aluminum alloy, magnesium alloy or the like.
- the 10 includes a plurality of first cavities 12, and a top portion of each of the first cavities 12 is formed with a hole for mounting the tuning screw 40.
- Step 202 providing a sheet of material on which the lower cavity 20 is stamped or forged.
- the material of the plate material may be aluminum, copper, steel, iron, aluminum alloy, magnesium alloy or the like.
- the lower cavity 20 includes a plurality of second cavities 22, and the second cavity 22 corresponds to the first cavity 12.
- a resonant rod 30 is housed in each of the second cavities 22.
- the resonant rod 30 is integrally formed with the lower cavity 20 and is formed by stamping or forging a sheet of material.
- the resonant rod 220 can be formed by stamping or forging from a single sheet of material.
- the resonant rod 220 is coupled to the lower chamber 20 in a split coupling manner.
- the resonant rod 220 is attached to the lower chamber 20 by screwing, welding or riveting. (See Figure 3)
- the resonant rod may include a rod portion and a fold portion.
- the folded portion may be integrally formed with the rod portion, that is, the folded portion and the rod portion are formed by stamping or forging a piece of sheet material.
- the fold portion may also be coupled to the stem portion body.
- the folded portion is attached to the end of the stem portion 222 by threading, welding or riveting.
- Step 203 the upper cavity 10 and the lower cavity 20 are surface-treated.
- the surface treatment includes electroplating, surface oxidation, and the like.
- step 203 may be omitted.
- Step 204 assembling the components in the upper cavity 10 and the lower cavity 20.
- the component includes one or more of the tuning screw 40, the resonant rod 30, the coupling structure, and the like.
- the hole is a through hole.
- the tuning screw 40 passes through a hole in the top of the first cavity 12, and the nut 50 is sleeved on the tuning screw 40 to lock with the tuning screw 40 to install the tuning screw 40.
- the nut 50 is mounted to the upper cavity 10 by welding or riveting.
- the hole at the top of the first cavity 12 may also be a screw hole.
- the screw hole can be locked with the tuning screw 40, and the nut 50 is used to reinforce the locking between the tuning screw 40 and the screw hole.
- the nut 50 may be omitted.
- step S204 may be omitted.
- Step 205 assembling the upper cavity 10 and the lower cavity 20 to form the cavity filter.
- the order of the steps 201-205 can be adjusted according to actual needs.
- the cavity filter 100 of the present invention is assembled from the upper cavity 10 and the lower cavity 20, and the first cavity 12 and the second cavity 22 together form the resonant cavity 60.
- the resonant rod 30 is housed. Therefore, the weight and manufacturing cost of the resulting cavity filter are significantly reduced compared to the conventional cavity filtering formed by machining or die casting.
- the structure of the cavity filter 100 of the present invention (assembled by the upper cavity 10 and the lower cavity 20) also reduces the difficulty of stamping or forging the cavity of the cavity filter.
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Abstract
提供了一种腔体滤波器,包括下腔体、封盖所述下腔体的上腔体、谐振杆及调谐螺钉,所述上腔体及所述下腔体中至少一个由板材冲压或锻造形成,所述上腔体包括第一空腔,所述下腔体包括与所述第一空腔对应的第二空腔,第二空腔与对应的第一空腔共同形成谐振腔来收容所述谐振杆。还提供了一种腔体滤波器的制造方法。该技术方案实现了降低所述腔体滤波器的重量及制造成本的目的。
Description
腔体滤波器及其制造方法 技术领域
本发明涉及通信设备领域, 尤其涉及一种腔体滤波器及其制造方法。 背景技术
腔体滤波器作为一种频率选择装置被广泛应用于通信领域, 尤其是射频通 信领域。 在基站中, 滤波器用于选择通信信号, 滤除通信信号频率外的杂波或 干扰信号。 现有技术中腔体滤波器的腔体是采用机加或压铸工艺实现的。 故, 现有的腔体滤波器的重量偏重、 制造腔体滤波器的成本偏高。 发明内容
本发明实施例所要解决的技术问题在于, 提供一种腔体滤波器及其制造方 法, 以减轻腔体滤波器的重量, 降低腔体滤波器的成本。
一种腔体滤波器, 包括下腔体、 封盖所述下腔体的上腔体以及谐振杆, 所 述上腔体及所述下腔体中至少一个由板材沖压或锻造形成, 所述上腔体包括第 一空腔, 所述下腔体包括与所述第一空腔对应的第二空腔, 第二空腔与对应的 第一空腔共同形成谐振腔来收容所述谐振杆。
一种腔体滤波器的制造方法, 包括:
提供一板材, 在所述板材上沖压或锻造出上腔体, 其中所述上腔体包括第 一空腔;
提供一板材, 在所述板材上沖压或锻造出下腔体, 其中所述下腔体包括第 二空腔, 所述下腔体内结合有谐振杆; 及
将所述上腔体与所述下腔体进行装配形成所述腔体滤波器, 其中, 所述第 一空腔与所述第二空腔共同形成谐振腔来收容所述谐振杆。
本发明腔体滤波器是由所述上腔体及所述下腔体装配而成, 并使得所述第 一空腔与所述第二空腔共同形成所述谐振腔来收容所述谐振杆。 所述上腔体及 所述下腔体均是通过对板材进行沖压或锻造得到, 故, 形成的腔体滤波器的重 量及制造成本相较于现有的通过机加或压铸形成的腔体滤波器明显降低。 且, 本发明腔体滤波器的结构也降低了沖压或锻造所述腔体滤波器的腔体的难度。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面将对实施 例或现有技术描述中所需要使用的附图作筒单地介绍, 显而易见地, 下面描述 中的附图仅仅是本发明的一些实施例, 对于本领域普通技术人员来讲, 在不付 出创造性劳动性的前提下, 还可以根据这些附图获得其他的附图。
图 1是本发明第一较佳实施例提供的腔体滤波器的分解示意图;
图 2是本发明第一较佳实施例提供的腔体滤波器的部分截面图;
图 3是本发明第二较佳实施例提供的腔体滤波器的部分截面图;
图 4是本发明第一较佳实施方式的腔体滤波器的制造方法的流程图。
图 5是本发明第二较佳实施方式的腔体滤波器的制造方法的流程图。 具体实施方式
下面将结合本发明实施例中的附图, 对本发明实施例中的技术方案进行清 楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明一部分实施例, 而不是 全部的实施例。 基于本发明中的实施例, 本领域普通技术人员在没有作出创造 性劳动前提下所获得的所有其他实施例, 都属于本发明保护的范围。
请参阅图 1及图 2,本发明第一较佳实施方式提供的一种腔体滤波器 100包 括一上腔体 10、 一下腔体 20、 若干谐振杆 30及若干调谐螺釘 40。 所述腔体滤 波器 100还包括其他组件如耦合结构等, 由于其他组件如耦合结构为现有技术, 故在此不进行详细描述。
所述上腔体 10包括若干第一空腔 12, 其中每一第一空腔 12对应一调谐螺 釘 40。所述上腔体 10是利用一第一模具在一块板材上沖压形成或通过锻造形成。 所述第一空腔 12的顶部形成有孔(未示出), 用于安装所述谐振螺釘 40。 所述 板材的材质可以为铝、 铜、 钢、 铁、 铝合金或镁合金等。 所述第一模具是根据 所述上腔体 10的结构特点进行开发的。 在其他实施方式中, 所述上腔体 10也 可以通过拉深或钣金(成型)等方式形成。
所述下腔体 20包括若干第二空腔 22, 其中每一第二空腔 22对应一个第一 空腔 12及一个谐振杆 30。 所述下腔体 20是利用一第二模具在一块板材上沖压 形成或通过锻造形成。 所述板材的材质可以为铝、 铜、 钢、 铁、 铝合金或镁合
金等。 所述第二模具是根据所述下腔体 20的结构特点进行开发的。 在其他实施 方式中, 所述下腔体 20也可以通过拉深或钣金(成型)等方式形成。
所述谐振杆 30与所述下腔体 20结合, 并收容于相应的第二空腔 22内。 所 述谐振杆 30与所述下腔体 20—体成型。
所述调谐螺釘 40与所述第一空腔 12顶部的孔配合从而安装于所述第一空 腔 12的顶部。 其中, 一个调谐螺釘 40对应一个谐振杆 30。
组装时, 将所述调谐螺釘 40穿过所述第一空腔 12顶部的孔, 并将一螺母 50套设于所述调谐螺釘 40上来与所述调谐螺釘 40进行锁合, 从而将所述调谐 螺釘 40安装于所述上腔体 10上。 此时, 所述调谐螺釘 40的一端伸入相应的第 一空腔 12内。 将耦合结构等其他组件安装于所述下腔体 20内。 将所述上腔体 10与所述下腔体 20进行装配使所述上腔体 10封盖所述下腔体 20。 此时, 每一 第一空腔 12与相应的第二空腔 22共同形成谐振腔 60。所述谐振杆 30收容于所 述谐振腔 60内。 所述调谐螺釘 40伸入所述第一空腔 12内的一端与相应的谐振 杆 30之间保持一预设间隔。 通过旋拧所述调谐螺釘 40可调节所述调谐螺釘 40 伸入所述第一空腔 12内的一端与相应的谐振杆 30之间的间距, 从而调节所述 腔体滤波器 100的射频参数。 其中, 所述上腔体 10与所述下腔体 20进行装配 的方式包括螺纹连接、 焊接及铆接方式。 在其他实施方式中, 所述螺母 50是通 过焊接或铆接的方式安装于所述上腔体 10上以与所述调谐螺釘 40进行锁合。
在本实施方式中, 所述第一空腔 22与所述第二空腔 12的高度比例为 1:1。 所述孔为通孔。 在其他实施方式中, 所述第一空腔 12与所述第二空腔 22的高 度比例可为任意配比, 即可以根据实际需要对所述第一空腔 22与所述第二空腔 12的高度比例进行调整。 所述第一空腔 12顶部的孔也可以为螺孔。 所述螺孔可 以与所述调谐螺釘 40进行锁合, 则所述螺母 50用于加固所述调谐螺釘 40与所 述上腔体 10的锁合。 当无需对所述调谐螺釘 40与所述上腔体 10的螺孔进行加 固锁合时, 所述螺母 50可以省略。 所述第一空腔 12、 所述第二空腔 22、 所述 谐振杆 30及所述调谐螺釘 40的数量可以根据实际情况进行调整。
请参考图 3 ,本发明第二较佳实施方式提供的一种腔体滤波器 200与第一较 佳实施方式的腔体滤波器 100相似, 两者的区别仅在于: 在第二较佳实施方式 中, 所述腔体滤波器 200的谐振杆 220是单独的由一块板材沖压或锻造形成。 所述谐振杆 220采用分体联接方式与所述下腔体 20结合在一起。所述谐振杆 220
通过螺纹连接、 焊接或者铆接的方式安装于所述下腔体 20。
在其他实施方式中, 谐振杆可以包括一杆部及一翻折部。 所述杆部与所述 翻折部可以一体成型, 由一块板材沖压或锻造形成。 所述杆部与所述翻折部也 可以分体联接。 所述翻折部通过螺纹连接、 焊接或者铆接方式安装于所述杆部 的端部。 所述谐振杆可以与所述下腔体 20一体成型。
请参考图 4, 本发明第一较佳实施方式提供的一种腔体滤波器的制造方法, 包括:
步骤 101 , 提供一块板材, 在所述板材上沖压或锻造出所述上腔体 10。 所述板材的材质可以为铝、 铜、 钢、 铁、 铝合金或镁合金等。 所述上腔体
10包括若干第一空腔 12, 且每一第一空腔 12的顶部形成有孔, 用于安装调谐 螺釘 40。
步骤 102, 提供一块板材, 在所述板材上沖压或锻造出所述下腔体。
所述板材的材质可以为铝、 铜、 钢、 铁、 铝合金或镁合金等。 所述下腔体 20包括若干第二空腔 22, 且所述第二空腔 22对应所述第一空腔 12。 每一第二 空腔 22内收容有一谐振杆 30。 在本实施方式中, 所述谐振杆 30与所述下腔体 20—体成型, 是由一块板材沖压或锻造形成。 在其他实施方式中, 所述谐振杆 220可以是单独的由一块板材沖压或锻造形成。所述谐振杆 220采用分体联接方 式与所述下腔体 20结合在一起。 所述谐振杆 220通过螺纹连接、 焊接或者铆接 方式安装于所述下腔体 20。 (参见图 3 )
所述谐振杆可以包括一杆部及一翻折部。 所述翻折部可以与所述杆部一体 成型, 即所述翻折部与所述杆部是由一块板材沖压或锻造形成。 所述翻折部也 可以与所述杆部分体联接。 所述翻折部通过螺纹连接、 焊接或者铆接的方式安 装于所述杆部的端部。
步骤 103,将所述上腔体 10与所述下腔体 20进行装配形成所述腔体滤波器
100。
在所述腔体滤波器 100中, 一个第一空腔 12对应一个第二空腔 22来共同 形成所述谐振腔 60以收容一个谐振杆 30。将所述上腔体 10与所述下腔体 20装 配的方式包括螺纹连接、 焊接或者铆接方式。
请参考图 5, 本发明第二较佳实施方式提供的一种腔体滤波器的制造方法, 包括:
步骤 201 , 提供一块板材, 在所述板材上沖压或锻造出所述上腔体 10。 所述板材的材质可以为铝、 铜、 钢、 铁、 铝合金及镁合金等。 所述上腔体
10包括若干第一空腔 12, 且每一第一空腔 12的顶部形成有孔, 用于安装调谐 螺釘 40。
步骤 202, 提供一块板材, 在所述板材上沖压或锻造出所述下腔体 20。 所述板材的材质可以为铝、 铜、 钢、 铁、 铝合金及镁合金等。 所述下腔体 20包括若干第二空腔 22, 且所述第二空腔 22对应所述第一空腔 12。 每一第二 空腔 22内收容有一谐振杆 30。 在本实施方式中, 所述谐振杆 30与所述下腔体 20—体成型, 是由一块板材沖压或锻造形成。 在其他实施方式中, 所述谐振杆 220可以是独立地由一块板材沖压或锻造形成。所述谐振杆 220采用分体联接方 式与所述下腔体 20结合在一起。 所述谐振杆 220通过螺纹连接、 焊接或者铆接 方式安装于所述下腔体 20。 (参见图 3 )
所述谐振杆可以包括一杆部及一翻折部。 所述翻折部可以与所述杆部一体 成型, 即所述翻折部与所述杆部是由一块板材沖压或锻造形成。 所述翻折部也 可以与所述杆部分体联接。 所述翻折部通过螺纹连接、 焊接或者铆接的方式安 装于所述杆部 222的端部。
步骤 203 , 将所述上腔体 10及所述下腔体 20进行表面处理。
所述表面处理包括电镀及表面氧化等。当无需对所述上腔体 10及下腔体 20 进行表面处理时, 步骤 203可以省略。
步骤 204, 将所述上腔体 10及所述下腔体 20内的零组件进行装配。
所述零组件包括所述调谐螺釘 40、所述谐振杆 30及所述耦合结构等或者其 中的一个或多个。 在本实施方式中, 所述孔为通孔。 所述调谐螺釘 40穿过所述 第一空腔 12顶部的孔, 并将所述螺母 50套设于所述调谐螺釘 40上来与所述调 谐螺釘 40进行锁合从而将所述调谐螺釘 40安装于所述上腔体 10上。 在其他实 施方式中, 所述螺母 50通过焊接或者铆接方式安装于所述上腔体 10上。 所述 第一空腔 12顶部的孔也可以为螺孔。 所述螺孔可以与所述调谐螺釘 40进行锁 合, 则所述螺母 50用于加固所述调谐螺釘 40与所述螺孔之间的锁合。 当无需 对所述调谐螺釘 40与所述上腔体 10进行加固锁合时, 所述螺母 50可以省略。 当无需对将所述零组件装配于所述上腔体 10及所述下腔体 20内时, 步骤 S204 可以省略。
步骤 205,将所述上腔体 10与所述下腔体 20进行装配形成所述腔体滤波器
100。
在其他实施方式中, 所述步骤 201-205的顺序可以根据实际需要进行调整。 本发明腔体滤波器 100是由所述上腔体 10及所述下腔体 20装配而成, 并 使得所述第一空腔 12与所述第二空腔 22共同形成所述谐振腔 60来收容所述谐 振杆 30。 故, 形成的腔体滤波器的重量及制造成本相较于现有的通过机加或压 铸形成的腔体滤波明显降低。 且, 本发明腔体滤波器 100 的结构 (由所述上腔 体 10及所述下腔体 20装配而成)也降低了沖压或锻造所述腔体滤波器的腔体 的难度。
最后应说明的是: 以上实施例仅用以说明本发明的技术方案, 而非对其限 制; 尽管参照前述实施例对本发明进行了详细的说明, 本领域的普通技术人员 应当理解: 其依然可以对前述各实施例所记载的技术方案进行修改, 或者对其 中部分技术特征进行等同替换; 而这些修改或者替换, 并不使相应技术方案的 本质脱离本发明各实施例技术方案的精神和范围。
Claims
1. 一种腔体滤波器, 包括下腔体、 封盖所述下腔体的上腔体以及谐振杆, 所述上腔体及所述下腔体中至少一个由板材沖压或锻造形成, 所述上腔体包括 第一空腔, 所述下腔体包括与所述第一空腔对应的第二空腔, 所述第二空腔与 对应的所述第一空腔共同形成谐振腔来收容所述谐振杆。
2. 如权利要求 1所述的腔体滤波器, 其特征在于, 所述谐振杆与所述下腔 体一体成型, 是由一块板材沖压或锻造形成。
3. 如权利要求 1所述的腔体滤波器, 其特征在于, 所述谐振杆是采用分体 联接方式与所述下腔体结合, 所述谐振杆的底部设置于所述第二空腔的底部。
4. 如权利要求 1所述的腔体滤波器, 其特征在于, 所述谐振杆包括杆部及 翻折部, 所述翻折部通过螺纹连接、 焊接或者铆接的方式安装于所述杆部邻近 所述第一空腔的端部。
5. 如权利要求 1所述的腔体滤波器, 其特征在于, 所述腔体滤波器还包括 调谐螺釘, 所述第一空腔的顶部形成有孔来安装所述调谐螺釘。
6. 如权利要求 5所述的腔体滤波器, 其特征在于, 所述孔为通孔, 所述调 谐螺釘上套设有螺母, 以与所述调谐螺釘进行锁合从而将所述调谐螺釘安装于 所述上腔体。
7. 如权利要求 6所述的腔体滤波器, 其特征在于, 所述螺母通过焊接或者 铆接的方式安装于所述上腔体上。
8. 如权利要求 5所述的腔体滤波器, 其特征在于, 所述孔为螺孔, 所述螺 孔与所述调谐螺釘锁合从而将所述调谐螺釘安装于所述上腔体。
9.一种腔体滤波器的制造方法, 包括:
提供一板材, 在所述板材上沖压或锻造出上腔体, 其中所述上腔体包括第 一空腔;
提供一板材, 在所述板材上沖压或锻造出下腔体, 其中所述下腔体包括第 二空腔, 所述下腔体内结合有谐振杆; 及
将所述上腔体与所述下腔体进行装配形成所述腔体滤波器, 其中, 所述第 一空腔与所述第二空腔共同形成谐振腔来收容所述谐振杆。
10. 如权利要求 9所述的制造方法, 其特征在于, 所述第一空腔的顶部形成 有孔以安装调谐螺釘。
11. 如权利要求 10所述的制造方法, 其特征在于, 所述孔为通孔, 所述制 造方法还包括:
将一螺母通过焊接或者铆接的方式安装于所述上腔体以与所述调谐螺釘进 行锁合从而将所述调谐螺釘安装于所述上腔体。
12. 如权利要求 10所述的制造方法, 其特征在于, 所述孔为螺孔, 所述螺 孔所述调谐螺釘进行锁合从而将所述调谐螺釘安装于所述上腔体。
13. 如权利要求 9所述的制造方法, 其特征在于, 所述谐振杆包括一杆部及 一翻折部, 所述翻折部通过螺纹连接、 焊接或者铆接的方式安装于所述杆部的 端部。
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