WO2009155873A1 - 螺钉装置和使用该螺钉装置的空腔滤波器 - Google Patents

螺钉装置和使用该螺钉装置的空腔滤波器 Download PDF

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Publication number
WO2009155873A1
WO2009155873A1 PCT/CN2009/072458 CN2009072458W WO2009155873A1 WO 2009155873 A1 WO2009155873 A1 WO 2009155873A1 CN 2009072458 W CN2009072458 W CN 2009072458W WO 2009155873 A1 WO2009155873 A1 WO 2009155873A1
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Prior art keywords
screw
screw device
threads
cavity
thread
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PCT/CN2009/072458
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English (en)
French (fr)
Inventor
韩宁森·优诺
多克森那·班特
夏奎思·派尔
阿尔·托比扬
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2009155873A1 publication Critical patent/WO2009155873A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B33/00—Features common to bolt and nut
    • F16B33/02—Shape of thread; Special thread-forms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P7/00—Resonators of the waveguide type
    • H01P7/04—Coaxial resonators
    • 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 a screw device, and more particularly to a screw device in a cavity filter and a cavity filter tuned using the screw device.
  • the radio frequency module of the wireless base station tends to be miniaturized.
  • a cavity filter is typically included in the RF module. Therefore, how to miniaturize the structure of the cavity filter has become one of the concerns.
  • the cavity filter typically includes a cover plate and a plurality of cavities. There are one or more resonant columns in each cavity. Each cavity is equivalent to an electromagnetic oscillating circuit.
  • the oscillating circuit can be represented as a parallel oscillating circuit comprising an inductive portion and a capacitive portion. The resonant frequency of the filter can be adjusted by adjusting the inductive or capacitive portion of the oscillator circuit.
  • the capacitance can be adjusted by adjusting the spacing between the resonant column and the cover, and the adjustment of the pitch can usually be achieved by a tuning screw that works in conjunction with the resonant column.
  • One method provided in the prior art is to be tuned by a screw and a nut, specifically: firstly, the nut and the screw are fixedly placed above the cavity of the cavity filter, and then the screw is screwed into the cavity to reach The role of tuning.
  • a technical problem to be solved by embodiments of the present invention is to provide a screw device and to provide a cavity filter tuned using the screw device.
  • the embodiment of the invention can realize self-locking directly by the screw, is convenient to use and can reduce the thickness of the filter.
  • a screw device comprising a screw and a conductive rigidity fixed relative to the screw At least a portion of the screw has a thread, and in at least one of the threaded portions of the screw, at least one pair of adjacent threads is substantially different from the adjacent threads and their adjacent threads.
  • a cavity filter comprising at least one cavity, the cavity being provided with a threaded hole that cooperates with the screw device described above, the screw device being adjustably fitted to the thread In the hole.
  • the embodiment of the present invention directly screws into the cavity of the filter, and the purpose of self-locking of the screw is achieved by changing the pitch of the thread, so that no nut is needed. And because the nut is not needed, the screw can be locked by itself while tuning in the cavity. The tuning screws do not exceed the cavity and do not increase the thickness of the filter.
  • Figure 1 is a perspective view of a screw device in a first embodiment of the screw device of the present invention
  • Figure 2 is a front elevational view of the screw device of Figure 1;
  • Figure 3 is a cross-sectional view of the screw device of Figure 2 taken along line A-A;
  • FIG. 4 is a schematic illustration of a cavity in a cavity filter of the present invention.
  • Embodiments of the present invention provide a screw device including a screw and a conductive rigid rod fixed opposite the screw; at least a portion of the screw having a thread, at least a portion of the screw having a threaded portion, at least The spacing of a pair of adjacent threads is different than the spacing of the adjacent pairs of threads and their adjacent threads.
  • the embodiment of the present invention further provides a cavity filter, the cavity filter includes at least one cavity, and the cavity is provided with a threaded hole that cooperates with the screw device, A screw device is adjustably fitted in the threaded hole.
  • the purpose of self-locking of the tuning screw is achieved by changing the pitch of the thread.
  • the screwing device for tuning does not exceed the cavity and does not increase the thickness of the filter.
  • the screw device of the present embodiment includes a metal rod 110, and may also be other conductive rigid rods, such as a conductive silicone rubber rod or the like, and a screw 100.
  • the metal rod 110 and the screw 100 are combined to form an integral body.
  • the screw 100 can be divided into three segments: from top to bottom, the upper screw 130, the middle screw 120, also referred to as a self-locking screw, and the lower screw 140.
  • Self-locking screw 120 It can be made of a plastic material.
  • one end of the metal rod 110 includes a screw head 1101.
  • a screwdriver receiving groove 1102 is formed in the nail head 1101.
  • the upper thread 130 and the lower stage screw 140 are formed with the same threads 1301 and 1401.
  • the pitch of the threads 1301 and 1401 can both be 0.75 mm.
  • Engagement slots 1205, 1206 extend along the axial direction of the self-locking screw 120.
  • the two engagement slots 1205, 1206 are located on one side of the central axis of the self-locking screw 120.
  • the threads on the self-locking screw 120 are divided into three different pitch threads 1201 (which may have a pitch of 0.75 mm), a thread 1202 (which may have a pitch of 0.65), and a thread 1203 (which may have a pitch of 0.85 mm).
  • the order of the three threads is the threads 1201, 1202 and 1203.
  • the pitch may also be other values as long as the pitch of one thread is greater than the pitch of one reference thread (such as a thread of 0.75 mm pitch) and the pitch of the other thread is less than the pitch of the reference thread.
  • the thread on the mid-section screw 120 can be an elastic thread for enhancing the axial force to enhance the self-locking performance of the screw.
  • a receiving groove 1103 which is screwed by a screwdriver can also be formed.
  • the receiving slots 1102, 1103 of the two ends of the metal rod 110 can also be replaced by a receiving table that is screwed with a sleeve or a wrench.
  • the distance between two adjacent threads of the same type of thread is the pitch
  • the distance between the two threads of different types but adjacent positions is the spacing.
  • the pitch of each type of thread has not changed.
  • the pitches of the above three threads (1201, 1202, 1203) are different, the pitch of different types of threads is always changing, that is, the spacing between different types of threads is sometimes changed. Big, sometimes it gets smaller.
  • the threaded hole that works with the thread has only one threaded hole, and its pitch can be 0.75mm. It can only accommodate threads with a pitch of 0.75mm.
  • the thread of 0.65 mm pitch and the thread of 0.85 mm pitch are subjected to axially different. The action of the force, and the direction of each force is opposite, so that the screw does not easily move in the threaded hole. This achieves the purpose of self-locking the screw.
  • the pitch of the above thread can also be other values, as long as the pitch of the three threads is different, and the pitch of one type of thread can be matched with the pitch of the threaded hole, and the pitch of other types of threads is larger or smaller than the pitch of the thread. Can achieve self-locking.
  • the pitch of the threaded hole in which the screw cooperates may also be the same as the pitch of the upper screw 130 and the lower screw 140 of the screw.
  • the metal rod 110-end screwdriver receiving groove 1102 can be used to screw the screw device into the cavity; and the other end of the metal rod 110 can receive the slot 1103 on the cover of the cavity filter. The position of the screw is then adjusted to adjust the capacitance of the cavity filter and thereby adjust the resonant frequency of the cavity filter.
  • the screw can be self-locking, so it is very convenient to use. Moreover, since the nut fixing screw is not required, when the structure of the filter is designed, the volume occupied by the nut does not need to be considered, so it can be further reduced.
  • the size of the filter furthermore, since the embodiment of the present invention mainly manufactures the screw by the plastic material, the thread is subjected to different forces in the axial direction due to the different pitches of the threads, and the directions of the forces are opposite, so that the screw It is not easy to move in the threaded hole and achieves the purpose of self-locking.
  • the self-locking function is not realized by a metal rod which is tuned, but is realized by a screw fixed to the metal rod, and therefore the metal material for manufacturing the screw device in the embodiment of the present invention is not subjected to Must have a flexible limit.
  • the plastic processing process is simple with respect to metal, it is only necessary to form a screw by injection molding, so that it can be manufactured at low cost. And because there is no nut, tuning is very convenient and the cost of the tuned filter is reduced.
  • the screw is made of a plastic material having rigidity and elasticity.
  • the components of the plastic material used to manufacture the screw may include polyetherimide (PEI for short) and polytetrafluoroethylene (PTFE), wherein the ratio of the above components may be: PEI 90%, PTFE It is 10%. ⁇ The above ratio is considered to consider the dielectric constant of the material and the plastic rigid temperature stability of the thread to ensure the self-locking function and reliability of the screw.
  • the screw may also be formed from other resilient materials such as rubber or the like.
  • the portion of the metal rod fixed to the screw has at least one protrusion so that the metal rod and the screw are better fixed and are less likely to loosen.
  • the different types of threads described above may also be two or four different pitch threads or the like.
  • at least two different types of threads can change the spacing between adjacent threads to achieve the objectives of the present invention.
  • the purpose of the self-locking of the present invention is achieved by changing the thickness of the thread to change the spacing between adjacent threads so that the spacing between adjacent threads is different. It is of course also possible to achieve the object of the invention by varying the spacing between adjacent threads by other means.
  • the present invention also provides an embodiment of a cavity filter using the screw device described above.
  • the cavity filter comprises at least one cavity.
  • the cavity is covered by a cover plate 510 having a resonant column 520 and a resonant cap 530 therein, and the resonant post 520 and the resonant cap 530 are fixed in position to each other.
  • a screw device 540 is mounted in the space in the resonant cap 530 and the resonant column 520, and a threaded hole is formed in the cavity to cooperate with the thread of the self-locking screw, and the screw device 540 is adjustably fitted in the threaded hole. .
  • the screw means for tuning in the cavity filter may have the structure described in the screw device embodiment of the invention.
  • the upper portion of the resonant cap may be provided with an opening corresponding to the screw head to facilitate screwing the resonant cap into the cavity of the cavity.
  • the position of the screw can be adjusted after the cover of the cavity filter is covered, thereby adjusting the capacitance of the cavity filter. And then adjust the effect of the resonant frequency of the cavity filter.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Description

螺钉装置和使用该螺钉装置的空腔滤波器
本申请要求于 2008 年 06 月 27 日提交中国专利局、 申请号为 200810127540.0、 发明名称为 "螺钉装置和使用该螺钉装置的空腔滤波器" 的 中国专利申请的优先权， 其全部内容通过引用结合在本申请中。
技术领域
本发明涉及螺钉装置，尤其涉及空腔滤波器中的螺钉装置和使用该螺钉装 置调谐的空腔滤波器。
背景技术
由于产品运输、站点获取和站点租金等多方面涉及的成本原因， 导致无线 基站的射频模块呈小型化的趋势。 在射频模块中通常包括空腔滤波器。 因此， 如何对空腔滤波器的结构进行小型化设计也成为被关注的问题之一。
空腔滤波器通常包括盖板和多个腔体。 每个腔体中具有一个或多个谐振 柱。每个腔体都相当于一个电磁振荡电路。 当滤波器被调谐到所接收信号的四 分之一波长时， 该振荡电路可表示为包括电感部分和电容部分的并联振荡电 路。通过调整该振荡电路的电感部分或电容部分， 即可以对滤波器的谐振频率 进行调整。
可以通过调整谐振柱到盖板之间的间距来对电容进行调整，而对间距的调 整通常可以通过与谐振柱配合工作的调谐螺钉来实现。
现有技术中提供的一种方法是通过螺杆和螺母来调谐， 具体为： 先把螺母 和螺杆固定放置在空腔滤波器的腔体的上方， 然后通过拧动螺杆， 深入腔体， 可以达到调谐的作用。
发明内容
发明人在实践中发现现有技术由于需要螺母固定，使用不方便。并且调谐 用的螺杆会伸出腔体外， 甚至超过螺母的厚度， 从而增加了滤波器的厚度。 本 发明实施例要解决的技术问题是提供螺钉装置，并提供使用该螺钉装置调谐的 空腔滤波器。本发明实施例能够直接通过螺杆实现自锁，使用方便且可以降低 滤波器的厚度。
本发明的实施例提供以下技术方案：
一种螺钉装置， 所述螺钉装置包括螺杆和与该螺杆相对固定的导电刚性 杆； 至少部分所述螺杆具有螺紋， 在所述螺杆的具有螺紋部分的至少一段中， 至少有一对相邻螺紋的间 巨不同于该对相邻螺紋及其相邻螺紋的间 巨。
一种空腔滤波器， 所述空腔滤波器包括至少一个空腔， 所述空腔设有与上 述的螺钉装置配合工作的螺紋孔，所述的螺钉装置可调节地被装配在所述螺紋 孔中。
从以上技术方案可以看出， 本发明实施例直接通过螺钉拧入滤波器的腔 体， 通过螺紋间距的改变， 实现螺钉自锁的目的， 因此无需使用螺母。 且由于 不需要螺母， 螺钉在腔体内调谐的同时能自行锁定。调谐用的螺钉不会超过腔 体， 也不会增加滤波器的厚度。
附图说明
图 1是本发明螺钉装置实施例一中螺钉装置的立体图；
图 2是图 1所示螺钉装置的主视图；
图 3是图 2所示螺钉装置沿 A-A线的剖视图；
图 4是本发明空腔滤波器中一个空腔的示意图。
具体实施方式
本发明实施例提供了一种螺钉装置，所述螺钉装置包括螺杆和与该螺杆相 对固定的导电刚性杆； 至少部分所述螺杆具有螺紋，在所述螺杆的具有螺紋部 分的至少一段中，至少有一对相邻螺紋的间距不同于该对相邻螺紋及其相邻螺 紋的间距。 以及相应的， 本发明实施例还提供了一种空腔滤波器， 所述空腔滤 波器包括至少一个空腔， 所述空腔设有与所述的螺钉装置配合工作的螺紋孔， 所述的螺钉装置可调节地被装配在所述螺紋孔中。通过螺紋间距的改变， 实现 调谐螺钉自锁的目的，调谐用的螺钉装置不会超过腔体， 也不会增加滤波器的 厚度。
下面结合附图，对本发明实施例提供的螺钉装置和使用该螺钉装置的空腔 滤波器的实施例进行详细描述。
本发明螺钉装置实施例一； 参考图 1至图 3 , 本实施例的螺钉装置包括金 属杆 110, 也可以为其它导电刚性杆， 如导电硅橡胶杆等， 和螺杆 100。 金属 杆 110和螺杆 100结合形成一体。 螺杆 100可以分为三段： 从上到下依次为上 段螺杆 130、 中段螺杆 120 , 也称为自锁螺杆， 和下段螺杆 140。 自锁螺杆 120 可以由塑性材料制成。其中，金属杆 110的一端包含螺钉头 1101。在钉头 1101 上制有螺丝刀接纳槽 1102。 上段螺杆 130和下段螺杆 140上制有相同的螺紋 1301和 1401。 螺紋 1301和 1401的螺距可以都为 0.75mm。 沿自锁螺杆 120 的轴向延伸有衔接槽 1205、 1206。这两个衔接槽 1205、 1206位于自锁螺杆 120 中心轴线的一侧。在自锁螺杆 120上的螺紋分为三种不同螺距的螺紋 1201 (其 螺距可以为 0.75mm )、 螺紋 1202 (其螺距可以为 0.65 )和螺紋 1203 (其螺距 可以为 0.85mm )。 三种螺紋的顺序为螺紋 1201、 1202和 1203。 上述螺距也可 以为其它的数值， 只要一个螺紋的螺距大于一个基准螺紋 (如 0.75mm的螺距 的螺紋）的螺距、 另一个螺紋的螺距小于基准螺紋的螺距即可。 中段螺杆 120 上的螺紋可以为弹性螺紋， 用于增强沿轴向的作用力，从而增强螺钉的自锁性 能。 在该螺钉装置的金属杆 110的另一端也可以制有用螺丝刀拧动的接纳槽 1103。 在更多的实施例中， 该金属杆 110的两端的接纳槽 1102、 1103也可以 改为用套筒或扳手拧的接纳台。
在本发明实施例中涉及一些概念， 其中： 同一种类型的螺紋的相邻两道螺 紋之间的距离为螺距，不同种类型的螺紋但是位置相邻的两道螺紋之间的距离 为间距。 每种类型螺紋的螺距是一直没有变的。 在本发明实施例中， 由于上述 三种螺紋（ 1201 , 1202, 1203 )的螺距都不一样， 所以不同种类型螺紋的间距 一直在变化，即有的时候不同类型的螺紋之间的间距在变大，有的时候在变小。
而与螺紋配合工作的螺紋孔只有一种螺紋孔， 其螺距可以为 0.75mm, 只 能容纳螺距为 0.75mm的螺紋。 这样， 在上述螺钉和螺紋孔之间配合工作的时 候， 由于三种类型的螺紋到衔接槽 1205、 1206处断开， 0.65mm螺距的螺紋和 0.85mm螺距的螺紋就会受到沿轴向上不同作用力的作用， 且各力的方向是相 反的， 使螺钉在螺紋孔中不容易移动。 这样就达到螺钉自锁的目的了。
上述螺紋的螺距也可以为其它的数值， 只要三种螺紋的螺距不同，且有一 种类型螺紋的螺距与螺紋孔的螺距相同能够与之配合，其它类型的螺紋的螺距 大于或小于该螺紋的螺距都可以实现自锁。其中与螺钉配合工作的螺紋孔的螺 距也可以与螺杆的上段螺杆 130和下段螺杆 140的螺距相同。
金属杆 110—端的螺丝刀接纳槽 1102可以用来将螺钉装置拧入腔体； 而 金属杆 110另一端的螺丝刀接纳槽 1103则可以在空腔滤波器的盖板被盖上之 后对螺钉的位置进行调整，从而起到调整空腔滤波器的电容、进而调整空腔滤 波器的谐振频率的作用。
在本发明实施例中， 螺钉可以实现自锁， 因此使用非常方便； 而且， 由于 不需要螺母固定螺钉，在对滤波器的结构进行设计时， 不需要考虑螺母占用的 体积， 因此可以进一步减小滤波器的尺寸； 再者， 由于本发明实施例主要通过 塑性材料制成螺杆， 由于通过螺紋的间距不同，使螺紋受到沿轴向上不同作用 力的作用， 且各力的方向相反， 使螺杆在螺紋孔中不容易移动， 达到了自锁的 目的。
此外， 本发明实施例中自锁功能不是由起调谐作用的金属杆实现， 而是由 与金属杆相固定的螺杆实现，因此本发明实施例中用于制造螺钉装置的金属材 料并不会受到必须具有弹性作用的限制。 另外， 由于相对于金属而言， 塑料加 工工艺简单， 只需要注塑就能形成螺杆， 所以可以以低成本生产制造。 并且由 于没有螺母， 调谐非常方便， 还降低了调谐滤波器的成本。
在本发明螺钉装置各实施例中，所述螺杆由具有刚性和弹性的塑性材料制 成。 用于制造螺杆的塑性材料的组分可以包括聚醚酰亚胺（简称 PEI )和 聚 四氟乙烯（简称 PTFE ), 其中， 上述各组分的配比可以分别是： PEI为 90%、 PTFE为 10%。 釆用以上配比考虑了材料的介电常数、 螺紋的塑性刚性温度稳 定性， 保证了螺杆的自锁功能及可靠性。
在本发明更多实施例中， 螺杆也可以用其他具有弹性的材料 (如橡胶等） 制成。 所述金属杆上与螺杆相固定的部分具有至少一个突起部， 以便于所述的 金属杆与螺杆更好的固定， 不容易松动。
在本发明更多的实施例中， 上述不同种类型的螺紋也可以为二种、 四种不 同螺距的螺紋等。 总之， 至少为两种不同种的螺紋都可以改变相邻螺紋之间的 间距， 以实现本发明的目的。 另外通过改变螺紋的厚度来改变相邻螺紋之间的 间距， 使相邻螺紋之间的间距不同， 来实现本发明自锁的目的。 当然也可以通 过其他方式改变相邻螺紋之间的间距， 来实现本发明的目的。
本发明还提供使用上述螺钉装置的空腔滤波器的实施例。在本发明实施例 中， 空腔滤波器包括至少一个空腔。 如图 4所示， 空腔由盖板 510覆盖， 空腔 内具有谐振柱 520和谐振帽 530, 谐振柱 520和谐振帽 530彼此位置相固定。 谐振帽 530和谐振柱 520中的空间内装配有螺钉装置 540 , 并且在空腔内制有 与上述自锁螺钉的螺紋相配合的螺紋孔，螺钉装置 540可调节地装配在所述螺 紋孔中。
在本发明实施例中， 空腔滤波器中所述用于调谐的螺钉装置可以具有本 发明螺钉装置实施例所述的结构。
另外， 当螺钉装置上金属杆的一端包含螺丝刀接纳槽或接纳台时， 谐振 帽的上部可以设有与该螺钉头相应的开口，以方便将谐振帽拧入到空腔的腔体 上。
当螺钉装置上金属杆的另一端也包含螺丝刀接纳槽或接纳台时， 则可以 在空腔滤波器的盖板被盖上之后对螺钉的位置进行调整，从而起到调整空腔滤 波器的电容， 进而调整空腔滤波器的谐振频率的作用。
以上对本发明实施例所提供的螺钉装置和使用该螺钉装置的空腔滤波器 述， 以上实施例的说明只是用于帮助理解本发明的方法及其思想； 同时， 对于 本领域的一般技术人员，依据本发明的思想，在具体实施方式及应用范围上均 会有改变之处， 综上所述， 本说明书内容不应理解为对本发明的限制。

Claims

权 利 要 求
1、 一种螺钉装置， 其特征在于， 所述螺钉装置包括螺杆和与该螺杆相对 固定的导电刚性杆； 至少部分所述螺杆具有螺紋， 在所述螺杆的具有螺紋部分 的至少一段中，至少有一对相邻螺紋的间距不同于该对相邻螺紋及其相邻螺紋 的间距。
2、 如权利要求 1所述的螺钉装置， 其特征在于， 在所述螺杆的具有螺紋 部分的至少一段中， 至少有两种类型不同螺距的螺紋。
3、 如权利要求 1所述的螺钉装置， 其特征在于， 在所述螺杆的具有螺紋 部分的至少一段中， 至少有两种类型不同厚度的螺紋。
4、 如权利要求 2所述的螺钉装置， 其特征在于， 在所述螺杆的具有螺紋 部分的至少一段中， 至少有三种类型不同螺距的螺紋， 其中第一类型的螺紋螺 距大于第二类型的螺紋螺距， 第一类型的螺紋螺距小于第三类型的螺紋螺距， 三种类型的螺紋按照第一、 第二、 第三的顺序出现在螺杆上。
5、 如权利要求 1 - 4任一项所述的螺钉装置， 其特征在于： 所述螺钉为用 于滤波器调谐的调谐螺钉。
6、 如权利要求 1 - 5任一项所述的螺钉装置， 其特征在于： 所述螺紋为弹 性材料制成。
7、 如权利要求 1 - 6任一项所述的螺钉装置， 其特征在于， 所述螺杆由塑 性材料制成。
8、 如权利要求 1 - 7任一项所述的螺钉装置， 其特征在于， 所述螺钉装置 的至少一端制有螺丝刀接纳槽或接纳台。
9、 如权利要求 1 - 7任一项所述的螺钉装置， 其特征在于， 所述螺钉装置 的两端制有螺丝刀接纳槽或接纳台。
10、 如权利要求 1 - 9任一项所述的螺钉装置， 其特征在于， 在具有间距 不相等的相邻螺紋的螺杆中， 形成至少一个沿轴向的^奸接槽。
11、 如权利要求 7所述的螺钉装置， 其特征在于， 所述塑性材料的组份包 括聚醚酰亚胺 PEI、 聚四氟乙烯 PTFE, 以使所述的塑性材料具有刚性和弹性。
12、 如权利要求 11所述的螺钉装置， 其特征在于， 所述 PEI、 PTFE的组 分依次为： 90%、 10%。
13、 如权利要求 1 - 12任意项所述的螺钉装置， 其特征在于， 所 述导电刚性杆上与所述螺杆相固定的部分具有至少一个突起部。
14、 一种空腔滤波器， 其特征在于， 所述空腔滤波器包括至少一 个空腔， 所述空腔设有与权利要求 1~13任一项所述的螺钉装置配合 工作的螺紋孔， 所述的螺钉装置可调节地被装配在所述螺紋孔中。
替换页（细则第 26条)
PCT/CN2009/072458 2008-06-27 2009-06-26 螺钉装置和使用该螺钉装置的空腔滤波器 WO2009155873A1 (zh)

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