WO2014075454A1 - 5016型射频同轴连接器 - Google Patents

5016型射频同轴连接器 Download PDF

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Publication number
WO2014075454A1
WO2014075454A1 PCT/CN2013/079085 CN2013079085W WO2014075454A1 WO 2014075454 A1 WO2014075454 A1 WO 2014075454A1 CN 2013079085 W CN2013079085 W CN 2013079085W WO 2014075454 A1 WO2014075454 A1 WO 2014075454A1
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WO
WIPO (PCT)
Prior art keywords
connector
outer conductor
pin
jack
diameter
Prior art date
Application number
PCT/CN2013/079085
Other languages
English (en)
French (fr)
Inventor
陈国华
马乃祉
张海亮
王晓春
Original Assignee
江苏吴通通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN 201220607095 external-priority patent/CN202940349U/zh
Priority claimed from CN201210462892.8A external-priority patent/CN103337725B/zh
Application filed by 江苏吴通通讯股份有限公司 filed Critical 江苏吴通通讯股份有限公司
Publication of WO2014075454A1 publication Critical patent/WO2014075454A1/zh

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46Bases; Cases
    • H01R13/52Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/5219Sealing means between coupling parts, e.g. interfacial seal
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/622Screw-ring or screw-casing
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/38Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts
    • H01R24/40Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency
    • H01R24/42Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency comprising impedance matching means or electrical components, e.g. filters or switches
    • H01R24/44Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency comprising impedance matching means or electrical components, e.g. filters or switches comprising impedance matching means

Definitions

  • the present invention relates to the field of communications, and more particularly to a 5016 type RF coaxial connector having the advantages of small size, light weight, shock vibration resistance, and quick installation (
  • the RF coaxial connector is a microwave component that can be used for connection or disconnection in a radio frequency electromagnetic wave transmission circuit.
  • the RF coaxial connector is between the functional modules of the wireless communication device, and the antenna and the receiver. Port components that are connected between transmitter modules and various RF coaxial cables.
  • the functions and performance specifications of the RF coaxial connector are: In addition to the connectable and disconnectable functions, the electrical, mechanical, and environmental resistance requirements of the connected state must be met. Specifically, the RF coaxial connector is required to efficiently transmit RF electromagnetic signals and energy, and its characteristic impedance must match the characteristic impedance of the connected RF system, and the reflection coefficient and insertion loss of the RF coaxial connector itself are small. At the same time, it must have good RF shielding efficiency and low intermodulation distortion.
  • the revised 7-16 RF coaxial connector is basically similar in structure and appearance to the previous version.
  • the RF coaxial connector produced according to this standard is called the 7-16 type in the industry, and is also called the L29 type in China.
  • the L29 type refers to the thread with the thread connection mechanism M29.
  • the outer diameter of the outer conductor is nominally 16 mm, and the outer diameter of the inner conductor is nominally 7 mm. Since the above dimensions of the inner and outer diameters are key elements, It has many advantages such as large power capacity, low reflection coefficient, low insertion loss and small intermodulation distortion, and has been widely used in communication transmission and RF test fields. But after
  • the existing 7-16 type RF coaxial connector shown in FIG. 1 includes a pin connector 3 and a jack connector 4; the existing pin connector 3 shown in FIGS. 1 and 2 has the following structure:
  • the outer circumference of the outer conductor 31 is provided with a threaded sleeve 33.
  • the inner thread 331 of the threaded sleeve 33 is M29 X I. 5; the outer conductor 31 is shown, and the mechanical electrical reference surface is disposed on the inner diameter 313 of the outer conductor and the radial direction.
  • the depth is 7mn!
  • the sealing ring mounting surface 314 is a smooth round surface; the end face of the pin 32 is set as a tapered surface 321; the axial length of the surface 322 contacting the socket is 1. 4mn! ⁇ 1. 6mm.
  • the existing jack connector 4 shown in FIG. 1 and FIG. 3 is configured such that the outer surface of the outer conductor 41 is provided with an external thread 411, and the external thread 411 is M29 X 1. 5; An annular deep groove 415 is disposed between the positioning faces 414; the outer conductor 41 The mechanical electrical reference surface is disposed at the end surface 412 of the outer diameter 413 of the outer conductor; the inner and outer sides of the aperture 42 of the illustrated socket 42 are both 45° chamfered 421.
  • the conventional 7-16 type RF connector requires an annular deep groove 415 to be machined on the end face of the outer conductor 41 in the receptacle connector 4, which results in an increase in the surface area of the outer conductor 41.
  • copper materials and plating materials are expensive, on the other hand, the processing difficulty and processing time are also multiplied; moreover, the existing 7-16 type RF coaxial connectors are M29 X 1.5 threaded connections, As a result, the opening width of the screw sleeve 33 is a minimum of 32 inches, so that the existing pin connector 3 and the jack connector 4 have a large volume and weight, and the resources are wasted, and the application space and occasions are also subject to some Restricted.
  • the port RF connector components need to be frequently inserted and removed, and the operation time is long, and the contact between the inner and outer conductors is fast.
  • the existing 7-16 type RF connector connection thread is M29 X 1. 5 single thread, generally need to screw the screw sleeve 33 6 to 10 times during the test tightening.
  • the inner and outer conductors can meet the requirements of the interface, and in particular, in the actual operation of the manufacturer, at least one of the electrical properties of the product must be 100% tested. Therefore, the test operation is very eager to solve the loading and unloading. Quickness; moreover, there are also the same at the end user construction site. Potential requirements.
  • the end surface of the pin 32 is set as the tapered surface 321 , and the inner and outer sides of the opening of the socket 42 are both 45 ° chamfered 421, that is, the contact surfaces of the needle and the hole are both There is an acute angle.
  • the outer conductor 31 of the pin connector 3 has no root groove formed on the intersection surface of the mechanical electrical reference surface 311 and the radial positioning surface 312, and the jack connector 4 ⁇ ,
  • the corner of the radial positioning surface 414 and the mechanical electrical reference surface 412 is not specified to be chamfered or rounded; however, in the actual part manufacturing conditions, the minimum sharp corner of the cutting edge is generally rounded R0.
  • the problem to be solved by the present invention is to overcome the deficiencies of the prior art technology, and provide a 5016 type RF coaxial connector having a characteristic impedance of 50 ⁇ and an outer conductor inner diameter of 16 mm, so the RF coaxial connector is called Type 5016.
  • the RF coaxial connector is called Type 5016.
  • it has the advantages of small size, light weight and quick installation, and also has higher coaxiality and contact pressure between the inner and outer conductor interfaces, and lower reflection coefficient. And insertion loss, lower intermodulation distortion, higher shock-resistant vibration characteristics, and a more reliable outer conductor contact interface seal.
  • a 5016 type RF coaxial connector having a characteristic impedance of 50 ⁇ and an outer conductor inner diameter of 16 mm.
  • the utility model comprises a pin connector as a male end and a jack connector as a female end, wherein the pin connector comprises: an outer conductor, an inner conductor pin, a screw sleeve provided on the outer conductor, the jack connector comprises an outer conductor, the inner connector a conductor socket and an external thread provided on an outer circumference of the outer conductor, wherein the threaded sleeve and the external thread are screwed by M22, and a mechanical electrical reference surface of the pin connector is disposed on an end surface of the outer conductor thereof,
  • the mechanical electrical reference surface of the jack connector is set deep on the outer conductor end face The degree is 5mn! ⁇ 7mm step surface, this step surface is composed of the outer conductor nominal inner diameter 16mm and the radial positioning 18mm reference hole.
  • the upper edge of the concave root groove is 135 ° ⁇ ⁇ ⁇ 150 °.
  • the 5016 RF connector of the present invention reverses and improves the mechanical electrical reference surface of the existing 7-16 type RF coaxial connector, that is, the radial positioning hole is changed from the original pin connector end to the jack. At the connector end, the radial positioning shaft is changed from the original jack connector end to the pin connector end.
  • the radial positioning hole at the end of the socket connector that is, the outer conductor 5mn! The width is 5mm, the width is 0. 5mn! ⁇ 2.
  • the upper annular groove of the concave annular groove is 135 ° ⁇ 150 °.
  • the positioning hole is changed to the reference hole, and from the actual machining precision assurance degree of the contemporary machining industry, the original maximum matching clearance is 0. 37mm, which is improved to be smaller than
  • the impedance continuity of the 5016 RF coaxial connector of the present invention and the coaxiality after the connection are improved, and the reflection coefficient is further improved to improve the product. Key quality.
  • the pin of the pin connector is formed by a spherical surface or a tapered surface and a rear cylindrical surface, and The end face of the pin is a spherical or tapered surface; the diameter of the rear cylindrical surface is 4. 80mn! 5mn!
  • the length of the axial direction is 1. 5mn! ⁇ 2. 2mm
  • the rear cylindrical surface is the contact section of the pin and the jack
  • the insertion aperture of the jack connector is a reverse composite hole
  • the axial length of the diameter is 0. 30mn! ⁇ 1 15mm
  • the outer arc surface is provided on the outer side of the radial opening, and the R of the curved surface is 0. 20mn! ⁇ 0.
  • the inner side of the opening is provided with an inner circular surface, and the arc of the curved surface is 0. lmn! ⁇ 0. 2mm.
  • the improved design is based on the following: During the insertion or removal of the pin spherical or tapered surface and the jack, the angle between the contact normal force and the jack opening force is rapidly increased with the axial insertion depth, and Change the inside and outside of the diameter of the jack from 45 ° chamfer to different R arc surface; make the pin and jack evenly smooth arc contact on both sides during insertion and removal; avoid sharp corner scraping The mechanical durability of the plugging machine is doubled.
  • the axial length of the diameter of the jack is reduced to 0.3 ⁇ to 1. 15 ⁇ , which improves the contact interface between the pin and the jack.
  • the pressure increases the contact pressure between the contact areas, which helps to improve the contact nonlinearity and greatly reduces the probability of crosstalk.
  • the outer diameter of the 18 mm shaft is provided with a reduced diameter annular groove, and the reduced diameter annular groove is provided with a 0 type sealing ring. It is to prevent the pin connector from falling freely before the pin connector is connected. It avoids the serious consequences of no seal caused by the loss of the type 0 seal.
  • a lock-proof elastic washer is disposed between the bottom of the threaded sleeve of the pin connector and the outer diameter of the outer conductor, and the axial end face of the anti-loose elastic washer is formed by 8 to 16 uniformly distributed peaks and troughs.
  • the peak and trough stack thickness is lmn! ⁇ 3mm.
  • the lock-proof elastic washer is made of an elastic metal material, which may be an elastic stainless steel. Can be effectively prevented In some cases of permanent connection, looseness may occur with the passage of time.
  • the 5016 type RF coaxial connector of the present invention firstly relies on the 18mm reference hole of the socket connector end and the 18mm small clearance of the pin connector to achieve precise radial positioning and axial positioning. Function; When the pin connector is inserted into the jack connector, it has the least friction. Tightening the above-mentioned nut sleeve, the above-mentioned anti-loose elastic gasket is compressed, and the above-mentioned 0-type sealing ring is also compressed at the same time; the mechanical electrical reference surface of the pin connector and the jack connector is completely gap-free. The inner conductor of the connector pair contacts the normal plane, and the contact normal surface of the outer conductor maintains sufficient pressure, and the outer conductor contact interface is also reliably sealed.
  • the threaded sleeve and the external thread are single or multi-threaded threads of the M22 X Ph (1 4 ) P1, the wrench has a working face of 25 mm, and the working face of the wrench has 26 sides.
  • Single-thread threads are generally used for long-term installations, and multi-thread threads are generally used for frequent loading and unloading.
  • the pin connector is an air medium and a non-air medium between the inside of the outer conductor and the outer part of the inner conductor, wherein the non-air medium is a non-metal insulating material, and the non-metal insulating medium is in front of the mechanical reference.
  • the end serves as an inner and outer conductor support.
  • An annular step structure for compensating for impedance continuity is disposed on the end surface of the dielectric material.
  • the maximum fit clearance between the radial positioning hole of the jack connector and the radial positioning axis is less than 0. 28
  • the inner diameter of the outer diameter of the outer diameter of the connector is 0.16 mm.
  • the jack connector has a radial positioning hole having a nominal diameter of 18 mm
  • the pin connector has a radial positioning axis having a nominal diameter of 18 mm
  • the radial positioning hole port and the radial positioning shaft end face are provided with an arc.
  • the arc R is 0. 30mn! ⁇ 0. 60mm.
  • the 5016 RF coaxial connector of the present invention has higher coaxiality and contact pressure of the inner and outer conductor interfaces than the existing 7-16 type radio frequency coaxial connector, Low reflection coefficient and insertion loss, lower intermodulation distortion, fast mounting and higher shock-resistant vibration characteristics, and reliability of the outer conductor contact interface seal; at the same time, reduced size and weight, greatly reducing resources Consumption.
  • Figure 1 Schematic diagram of the connection state of the existing 7-16 type pin RF coaxial connector and the jack RF coaxial connector;
  • Figure 2 is a schematic view of an existing 7-16 type pin RF coaxial connector
  • Figure 3 is a schematic diagram of an existing 7-16 type jack RF coaxial connector
  • Figure 4 is a schematic view showing the connection state of the 5016 type air medium radio frequency coaxial connector of the present invention.
  • Figure 5 is a schematic view showing the connection state of the 5016 type non-air dielectric RF coaxial connector of the present invention.
  • Figure 6 is a schematic view of a 5016 type air dielectric pin RF coaxial connector of the present invention
  • Figure 7 is a schematic view of a 5016 type non-air dielectric pin RF coaxial connector of the present invention
  • Figure 8 Is a 5016 air and non-air dielectric pin RF coaxial connection of the present invention a partial enlarged view of the portion of the connector Mu ;
  • FIG 9 is a schematic view of 5016-type RF coaxial connector receptacle of the present invention.
  • FIG. 10 is a partial section 5016 M 12 RF coaxial jack type connector of the present invention is an enlarged view;
  • FIG. 13 is a partial section 5016 M-type RF coaxial connector receptacle of the present invention is an enlarged view;
  • FIG. 12 is a schematic view of a three-dimensional elastic lock washer 5016 RF coaxial connector of the present invention.
  • Figure 6 shows the air medium pin connector 1 of the present invention; the connector 1 includes an outer The conductor 11, the inner conductor pin 12, the nut 13, the 0-ring 14 and the lock-proof elastic washer 15.
  • the outer diameter 11 of the outer conductor 11 is 16 mm
  • the mechanical electrical reference surface is the end surface 111
  • the inner diameter 114 of the outer conductor 11 is not chamfered or rounded
  • the outer diameter shaft 13 is a small clearance fit shaft of 18 mm base hole. 2mn!
  • the outer port has a rounded corner 111a; at the same time, the outer diameter of the outer surface has a reduced-diameter annular groove 112, the groove depth 1 12a is 0. 2mn! ⁇ 0. 4 ⁇ , the type 0 sealing ring 14 is sleeved on the groove; since the connector is not connected yet, the 0-type sealing ring 14 is very easy to fall off easily; especially in the case of no detection The intrusion of harmful gas and moisture caused by the loss of the 0-type seal ring 14 is severely fatal to the microwave transmission; the partial enlargement of the concave annular groove portion is shown in Fig.
  • FIG. 8 shows a non-air dielectric pin RF connector 1a of the present invention; the connector includes the outer conductor 11, the inner conductor pin 12, the nut 13, the 0-ring 14 and the lock-proof elastic washer 15 as described above.
  • a non-air medium 16 is included; and an impedance continuity compensation design composed of an annular step 161 and 162 is provided on the end surface of the non-air medium 16.
  • the non-air dielectric RF connector la is designed to be more compact and simple in consideration of appropriate applications for practical applications.
  • the basic principle is the same as that of the 5016 air medium, which is only a difference in dielectric constant.
  • Figure 9 shows a receptacle connector 2 of the present invention
  • the connector includes an outer conductor 21 and an inner conductor receptacle 22.
  • the outer conductor has a nominal inner diameter 216 of 16 mm and its mechanical electrical reference surface is set at the outer conductor end face depth of 5 mn! ⁇ 7mm step surface, this step surface is the outer conductor positioning surface of the outer conductor nominal inner diameter 16mm and the radially positioned 18mm reference hole 212 213;
  • the inner conductor socket 22 port is a reverse composite hole, and a different R arc is disposed on the inner side 221a and the outer side 221b of the diameter hole 221, and a partial enlargement of the inner conductor socket M 13 portion is shown in FIG. 11; 5mn!
  • the outer conductor positioning surface width 214 is 0. 5mn!
  • the inner conductor positioning surface width 214 is 0. 5mn! ⁇ 2.
  • 0mm concave clear root groove, the upper edge angle 215 of the concave root clearing groove is 135 ° ⁇ 150 °, and is smoothly connected by the circular arc surfaces 213a and 215a at the intersection of each element, and the outer conductor positioning surface 213 root
  • FIG. Figure 12 shows the 5016 RF connector of the present invention mounted on the bottom of the nut 13 and the outer diameter of the outer conductor 11 of the pin connector.
  • the outer axial end face of the anti-loose elastic washer 15 is 8 ⁇ 16 uniformly distributed peaks and troughs are formed, and the peaks and troughs are superimposed with a thickness of lmn! ⁇ 3mm ; made of elastic metal material.
  • the 5016 type radio frequency coaxial connector of the invention is provided with two kinds of fine thread, one is a single thread which is suitable for outdoor occasions for long connection; the other is a multi-thread thread suitable for occasions requiring frequent loading and unloading;
  • the single-thread thread of the invention has a lead of l. Omm, which is smaller than the existing lead 1. 5mm ; and the added anti-loose elastic washer, so the self-locking property of the single-head thread, that is, the anti-loose property is certain It is superior to existing products; and the multi-head thread has the same anti-loosening performance as the existing products under the action of adding elastic washers.
  • the weight is reduced from the original 95 g (calculated as brass, the following is the same) to 56 g, and the surface area is reduced from the original 1.13 dm 2 to 0. 79 dm 2 6% ⁇ 30. 0% ⁇
  • the weight and surface area decreased by 31. 6% and 30.0%. Therefore, the 5016 RF connector of the present invention can reduce the consumption of brass by about 40 grams per pair of products; at the same time, it also reduces the cost of plating, and more importantly, contributes to the global low-carbon production.
  • the 5016 of the present invention The reduction in the maximum form factor of the RF connector also makes the installation space of the communication device more economical and the application is further expanded.
  • Figure 4 shows the state in which the air medium pin connector is connected to the jack connector
  • Figure 5 shows the state in which the non-air medium pin connector is connected to the jack connector
  • Figure 4. A non-air insulating medium 16 is added to the basic structure.
  • the outer diameter dimension 123 of the pin 12 of FIG. 5 mated with the non-air insulating medium 16, see FIG. 7, may be characterized by a characteristic impedance Z. , outer conductor inner diameter D, size 123 outer diameter d, relative to medium constant ⁇ (1)
  • the 5016 RF coaxial connector shown in Figures 4 and 5 operates in the same manner when connected; when connecting, first rely on the 18mm reference hole 212 in Figure 9.
  • the outer shaft 18mm with a small gap fit shaft 113 can provide precise radial positioning; when the pin connector is inserted into the jack connector, since the pin end face 121 is spherical or tapered, and The inner side 221a and the outer side 221b of the aperture opening 221 are provided with different R circular arc faces (see FIG.
  • the needle and the hole have the minimum frictional force during the insertion and removal process; especially in the case of frequent insertion and removal, the machine is made Durability is multiplied; on the other hand, from the wide application and manufacturing precision of contemporary CNC machine tools, the tolerance of the standard can be easily achieved, the tolerance of the 18mm reference hole 212 and the outer diameter of the 18mm small gap fit shaft 113, and the manufacturing tolerance of the outer diameter of the outer conductor
  • the belt has been improved; at the same time, the outer conductor of the existing 7-16 type RF coaxial connector has a nominal inner diameter of 313 and 413 (see Figure 2 and Figure 3).
  • the existing 7-16 type characteristic impedance error value is about 5. 1285 times higher than the 5016 type of the present invention.
  • Brass bolt preload force F. safety factor ⁇ X material yield limit ⁇ ⁇ ⁇ dangerous cross-sectional area of bolt
  • Brass bolt tightening torque ⁇ tightening torque factor ⁇ ⁇ preload force
  • F. X thread nominal diameter d 20. 28 N. n! ⁇ 25. 34 N. m
  • the tensile test of the threading mechanism of the patent of the present invention is tested according to the provisions of Articles 8.1 and 8.2 of GB3098.1 (equivalent to IS0898-1), which is better than 200% of the specified value;
  • ⁇ ⁇ the self-locking condition
  • the invention patent adds an elastic mechanical anti-loose measure, and its anti-loose reliability is further enhanced than the existing 7/16 type RF coaxial connector. See Fig. 4 or Fig.
  • the 5016 RF coaxial connector is guaranteed to have higher impedance continuity and near zero contact nonlinearity.

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Abstract

一种5016型射频同轴连接器,其特性阻抗为50Ω,外导体内径为16mm;其插针连接器(1)包括:外导体(11)、内导体插针(12)、外导体上设有螺套(13),其插孔连接器(2)包括外导体(21)、内导体插孔(22)以及外导体外圆上设有的外螺纹(211),该螺套与外螺纹采用M22螺纹连接。与现有的7-16型射频同轴连接器相比,该连接器对机械电气基准面作了反置,插针端面为球面或锥面(121),把O型密封圈(14)设置在环形槽(112)内,在螺套底部设有防松弹性垫圈(15)。该连接器减小了体积及重量,具有更高的同轴度和内外导体界面的解除压力,更低的反射系数和插入损耗,更低的交调失真,快速安装和更高的抗冲击振动的特性。

Description

5016型射频同轴连接器
技术领域 本发明涉及一种通信领域, 特别涉及具有体积小重量轻、抗冲击 振动、 安装快速等优点的 5016型射频同轴连接器 (
背景技术
射频同轴连接器是一种可以用于射频电磁波传输回路中,进行连 接或者分断作用的微波元件, 通常可以理解为, 射频同轴连接器就是 无线通信设备内部各功能模块之间、天线与收发射模块之间、各种射 频同轴电缆之间连接的端口元件。射频同轴连接器的功能及性能指标 要求是: 除了具备可连接和分断功能外, 还必须满足其连接状态下的 电气性能、 机械性能, 以及耐环境性能的要求。 具体地讲, 射频同轴 连接器要有效地传输射频电磁波信号和能量,其特性阻抗必须与所连 接的射频系统的特性阻抗相匹配,并且射频同轴连接器本身的反射系 数以及插入损耗要小,同时还必须有良好的射频屏蔽效率和低的交调 失真。
现有技术中的 7-16型射频同轴连接器, 1975年国际电工委员 会 IEC统一发布并实施了 " IEC60169-4: 1975 " 国际标准; 2008年 国际电工委员会重新修订了该标准为 " IEC 61169-4 : 2008"的国际标 准。修订后的 7-16型射频同轴连接器其结构及外型与旧版基本相似。 依照该标准生产出来的射频同轴连接器业内称为 7-16 型,国内也称 为 L29型, L29型是指其螺纹连接机构为 M29的螺纹。
现有的 7-16型射频连接器, 其外导体内径的标称值为 16mm, 其 内导体外径的标称值为 7mm。由于上述内径和外径的尺寸是关键要素, 保证了其功率容量较大, 反射系数低、插入损耗及交调失真较小等许 多优点, 在通信传输和射频测试领域都得到了广泛的应用。 但历经
37年的历史, 尤其是近几年来随着全求范围内通信事业的迅猛发展, 特别是来自移动通信领域和射频测试的仪器仪表领域,应用场合不断 地向特性化转变, 因此, 现有的 7-16型射频同轴连接器也越来越显 示出来一些不足这处; 主要表现在:
1 ) 外形体积大和重量重, 不能适应较小空间的安装, 以及铜材 和金银电镀等资源消耗高。
2 ) 在仪器仪表行业的测试中, 端口射频连接器元件需要频繁插 拔和装卸, 一方面是安装拧紧时间长, 二是内导体接触部分磨损快。
3 ) 由于插孔连接器机械结构相对复杂, 制造工艺性相对较差, 而且影响电连续性的关键工艺要素未作规定, 致使反射系数、插入损 耗及交调失真等电性能指标达标率受到影响。
4) 由于没有螺纹防松设置, 在一些永久性连接的场合随着使用 时间的推移, 松动的机率也随之增大, 存在松动的隐患。
如图 1所示现有的 7-16型射频同轴连接器包括插针连接器 3和 插孔连接器 4; 如图 1和图 2所示现有插针连接器 3的结构为: 其外 导体 31的外圆上设置有螺套 33,所述的螺套 33的内螺纹 331为 M29 X I. 5; 所示的外导体 31, 其机械电气基准面设置在外导体内径 313 与径向定位孔 312 的交界面上, 深度为 7mn!〜 8mm; 而密封圈安装面 314为光滑圆面; 所述的插针 32端面设置为锥面 321 ; 与插孔接触的 面 322轴向长度为 1. 4mn!〜 1. 6mm。
如图 1和图 3所示现有的插孔连接器 4结构为: 其外导体 41外 表面设置有外螺纹 411, 所述的外螺纹 411 为 M29 X 1. 5 ; 在外螺纹 411与径向定位面 414之间设置有一个环形深槽 415 ; 所述外导体 41 的机械电气基准面设置在外导体内径 413 的端面 412 ; 所示插孔 42 的孔径口内外侧均为 45 ° 倒角 421。
综上所述,具体地进一歩说明现有的 7-16型射频同轴连接器存在 的主要缺陷:
1 ) 外形体积大和重量重, 不能适应较小空间的安装, 以及铜材 和金银电镀等资源消耗高。从本产品的现实和未来使用工况考虑, 从 理念和实践均证明采用 M29 X 1. 5的连接强度是超级富于的; 因为, 该产品如果应用到室外馈缆上最为严酷的环境下, 依据行业标准 "YD/T1967-2009中第 4. 8. 5条表 8 ",最大的连接器夹紧装置抗电缆 拉伸的能力为 850 N, 当电缆在大于 850 N的拉力作用下, 则电缆本 身将出现失效; 而在设备上应用时该产品所承载的拉力几乎接近零。 如图 1和图 3所示, 现有的 7-16型射频连接器在插孔连接器 4中的 外导体 41端面需要加工一个环形深槽 415, 又导致了该外导体 41的 表面积增大, 这样做一方面铜材料和电镀材料消耗大, 另一方面加工 难度和加工工时也成倍增加; 而且, 现有的 7-16型射频同轴连接器 为 M29 X 1. 5的螺纹连接, 导致螺套 33搬手开口宽最小为 32匪, 所 以, 致使现有的插针连接器 3和插孔连接器 4外形体积及重量较大, 资源造成浪费, 其应用空间及场合也会受到一些制约。
2 )在仪器仪表行业的测试中, 端口射频连接器元件需要频繁插拔 和装卸, 一方面是操作时间长, 二是内外导体接触部分磨损快。如图 1和图 2及图 3所示,现有的 7-16型射频连接器连接螺纹为 M29 X 1. 5 单线螺纹, 在进行测试拧紧时一般需要对螺套 33拧 6〜 10圈, 方可 使内外导体接触界面达到吻合的要求,而特别是在制造商的实际操作 中一件产品至少要对 2〜3项电气性能作 100%的检测, 所以, 测试操 作非常渴望能解决装卸的快捷性; 况且, 在终端用户施工现场也有同 样的潜在要求。 另外, 进一歩分析内导体在接触时的状态过程可见: 插针 32的端面设置为锥面 321,而插孔 42的孔径口内外侧均为 45 ° 倒角 421, 即针与孔的接触表面均存在锐角。 当针与孔在插拔过程中 发生相对移动时, 由于接触压力的作用, 其产生的摩擦力是严重的, 因而导致这种磨损会急剧增加。
3 ) 由于机械结构相对复杂, 制造工艺性相对较差, 而且对影响电 连续性的关键工艺要素未有规定, 故反射系数、插入损耗及交调失真 等电性能指标达标率受到影响。 因为, 射频同轴连接器本身最基本的 技术要求之一, 是电气性能。如图 1和图 2及图 3所示, 插针连接器 3中的外导体 31其中的机械电气基准面 311与径向定位面 312相交 面上未设置清根槽,而且在插孔连接器 4中的径向定位面 414与机械 电气基准面 412相交面上又未规定倒角或倒圆;然而在实际零件制造 工况中, 切削车刀刃最小尖角一般为圆角 R0. 2mm, 再加之加工过程 的磨损量等因素, 其切削车刀刃尖角随机变成圆角 R0. 5mm的机率是 经常发生的, 况且, 插针连接器 3和插孔连接器 4是不同制造商的产 品; 所以, 插针连接器 3和插孔连接器 4的机械电气基准面是否完全 吻合存在问题;如果所述的这两个基准面不能在任何随机状态吻合并 保持压力, 则连接器对的电气性能将受到严重影响, 同时, 对整个传 输系统造成影响; 而且实践充分证明, 在现场则很难找到此项失效原 因。 另一方面, 径向定位面 414被螺纹面 411所遮挡住, 所以径向定 位面 414加工难度加大;而且其径向定位孔 312与径向定位轴之间的 最大配合间隙设置为 0. 37mm; 这些综合不利因素均会严重影响射频 同轴连接器的同轴度精度的下降;至而影响产品及系统的电气性能下 降; 同理, 在现场则很难找到此项失效原因; 这些潜在的失效模式造 成了无数次的严重后果。 4)由于没有螺纹防松设置, 在一些永久性连接的场合随着使用时 间的推移, 松动的机率也随之增大, 存在松动的隐患。 如图 1和图 2 及图 3所示, 插针连接器 3和插孔连接器 4的连接是依靠螺套 33和 插孔连接器 4的外螺纹 411拧紧后连接的, 其机构中没有防松设置, 仅靠 M29 X 1. 5的螺纹在安装时的预紧力作为长久的防松; 而在现场 安装时即便是应用扭矩搬手操作, 准确达到预紧力要求, 由于安装在 室外的射频馈缆受冲击及振动是不可避免的; 所以, 特别是在一些永 久性连接的场合随着使用时间的推移, 松动的机率也随之增大。 发明内容
本发明所要解决的问题是克服现有产品技术的不足之处,提供一 种 5016型射频同轴连接器,其特性阻抗为 50 Ω,外导体内径为 16mm, 所以该射频同轴连接器称为 5016型。其与现有的 7-16型射频同轴连 接器相比, 具有体积小重量轻、 安装快捷的优点, 而且还具有更高的 同轴度和内外导体界面的接触压力, 更低的反射系数和插入损耗, 更 低的交调失真, 更高的抗冲击振动的特性, 以及更可靠的外导体接触 界面密封性。
本发明的发明目的是通过如下技术方案实现的:一种 5016型射频 同轴连接器, 其特性阻抗为 50 Ω , 外导体内径为 16mm。 包括作为公 端的插针连接器和作为母端的插孔连接器, 其中插针连接器包括: 外 导体、 内导体插针、 外导体上设有的螺套, 插孔连接器包括外导体、 内导体插孔以及外导体外圆上设有的外螺纹,所述的螺套与外螺纹采 用 M22螺纹连接,所述插针连接器的机械电气基准面设置在其外导体 的端面上,所述插孔连接器的机械电气基准面设置在其外导体端面深 度为 5mn!〜 7mm的台阶面上,此台阶面由外导体标称内径 16mm与径向 定位的 18mm基准孔复合而成。
所述插孔连接器的外导体标称内径 16mm与径向定位 18mm基准孔复 合而交界的径向面上设置有一凹面清根槽, 其深度为 0. 5匪〜 1匪,宽 度为 0. 5ΙΜ!〜 2. 0mm, 该凹面清根槽的上边斜角为 135 ° ^ α ^ 150 ° 。
本发明的 5016射频连接器将现有的 7-16型射频同轴连接器的机 械电气基准面作了反置和改进设计,即将径向定位孔由原来的插针连 接器端改为了插孔连接器端,径向定位轴由原来的插孔连接器端改为 了插针连接器端。另一方面,从当代机械行业加工刀刃具现实结构(最 小刀尖角一般为 0. 2mm) 和加工刀尖的磨损考虑, 在所述的插孔连接 器端的径向定位孔,即外导体标称内径 16mm与径向定位 18mm基准孔 复合而交界的径向面上,设置有深度为 5mm,宽度为 0. 5mn!〜 2. 0mm 的凹面环形槽, 所述凹面环形槽的上边斜角为 135 ° α 150 ° 。 同时, 将定位的孔改为了基准孔, 并从当代机械加工行业现实加工精 度保证程度考虑, 由原来的最大配合间隙 0. 37mm, 改进为小于
0. 28mm。 上述的改进, 一是使插孔连接器外径尺寸减小了 7mm; 二是 使射频连接器的机械电气基准面无论是何家制造商的产品互换对接, 均完全避免了干涉的机率; 三是使连接后的同轴度提高了
(0. 37mm-0. 28匪) =0. 09匪以上,提高了本发明的 5016射频同轴连接 器的阻抗连续性及连接后的同轴度,进一歩降低了反射系数提高了产 品的关键品质。
所述插针连接器的插针由球面或锥面与后段圆柱面相贯而成, 其 插针端面为球面或锥面; 该后段圆柱面的直径为 4. 80mn!〜 4. 86m, 轴 向长度为 1. 5mn!〜 2. 2mm, 该后段圆柱面即为插针与插孔的接触段, 所述插孔连接器的插孔径口为反向的复合孔,所述的径口的轴向长度 为 0. 30mn!〜 1. 15mm, 在该径口的外侧设置有外侧圆弧面, 其弧面的 R 为 0. 20mn!〜 0. 35mm, 在该径口的内侧设置有内侧圆弧面, 其弧面的 R 为 0. lmn!〜 0. 2mm。 如此改进设计其依据是: 插针球面或锥面与插孔 插拔过程中,其接触法向力与插孔涨开力之间的夹角是随轴向插入深 度迅速变大的, 而且, 将插孔的径口内侧和外侧由 45 ° 倒角改为不 同的 R圆弧面; 使插针与插孔在插拔过程中两侧匀为光滑圆弧接触; 避免了锐角刮削现象, 使插拔机械耐久性成倍提高。 另一方面, 从射 频电连续性和趋肤原理考虑, 将所述插孔的径口其轴向长度减短为 0. 3匪〜 1. 15匪, 提高了插针与插孔接触界面上的压强, 从而增强了 接触区域间的接触压力, 有利于改善接触非线性的产生, 极大地降低 了交调失真的机率。
在插针连接器的外导体外径 18mm轴根部设置有一个的缩径环形 槽, 在所述的缩径环形槽内套有 0型密封圈。是为了防止插针连接器 在尚未连接前的状态下 0型密封圈自由脱落的机率;避免了由于 0型 密封圈脱落而缺失所造成没有密封的严重后果。
在所述的插针连接器的螺套底部与其外导体外圆径部之间设置有 一个防松弹性垫圈,该防松弹性垫圈轴向端面为 8〜 16个均布的波峰 及波谷形成, 所述的波峰及波谷叠加厚度为 lmn!〜 3mm。 防松弹性垫 圈由弹性金属材料制成, 该弹性材料可以为弹性不锈钢。可以有效防 止在一些永久性连接的场合随着使用时间的推移可能出现松动的隐
本发明的 5016型射频同轴连接器在连接时,首先依靠插孔连接器 端的 18mm基准孔与插针连接器外圆 18mm小间隙配合的轴,起到精确 的径向定位和轴向定位的作用; 当插针连接器与插孔连接器插合时, 具有最小的摩擦力。 拧紧上述的螺套, 上述防松弹性垫圈被压缩, 上 述的 0型密封圈同时随之也被压缩;其插针连接器与插孔连接器的机 械电气基准面则完全无间隙吻合, 此时, 连接器对的内导体接触法向 面, 以及外导体的接触法向面均保持着足够的压力, 其外导体接触界 面也被可靠的密封。
所述的螺套与外螺纹为 M22 X Ph ( 1 4 ) P1的单线或多线螺纹, 该螺套的扳手工作面为 25mm, 该扳手工作面外形为 2 6边。 单线螺 纹一般应用于长久安装的场合, 多线螺纹一般应用于经常装卸的场 合。 所述的插针连接器在外导体内部和内导体外部之间为空气介质和 非空气介质两种绝缘介质, 其中非空气介质为非金属绝缘材料介质, 该非金属绝缘材料介质在靠近机械基准面前端起到内外导体支撑作 用。
在所述的绝缘材料介质的端面上设置有一个起到阻抗连续性补偿 作用的环形台阶结构。
插孔连接器的径向定位孔与径向定位轴之间的最大配合间隙小于 0. 28 所述的插孔连接器和插针连接器的外导体内径都为 16mm, 其公差 值为 0. 06匪。
所述插孔连接器径向定位孔公称直径为 18mm, 所述插针连接器径 向定位轴公称直径为 18mm, 所述的径向定位孔端口和径向定位轴端 面上均设置有圆弧, 该圆弧 R为 0. 30mn!〜 0. 60mm。
本发明的有益效果是:本发明所述的 5016射频同轴连接器与现有 的 7-16型射频同轴连接器相比, 具有更高的同轴度和内外导体界面 的接触压力, 更低的反射系数和插入损耗, 更低的交调失真, 快速安 装和更高的抗冲击振动的特性, 以及外导体接触界面密封的可靠性; 同时, 减小了体积及重量, 大大降低了资源消耗。 附图说明
图 1.是现有 7-16型插针射频同轴连接器与插孔射频同轴连接器 连接状态的示意图;
图 2.是现有 7-16型插针射频同轴连接器的示意图;
图 3.是现有 7-16型插孔射频同轴连接器的示意图;
图 4.是本发明的 5016型空气介质射频同轴连接器连接状态的示 意图;
图 5.是本发明的 5016型非空气介质射频同轴连接器连接状态的 示意图;
图 6.是本发明的 5016型空气介质插针射频同轴连接器的示意图; 图 7.是本发明的 5016型非空气介质插针射频同轴连接器的示意 图;
图 8.是本发明的 5016型空气和非空气两种介质插针射频同轴连 接器 Mu部分的局部放大图;
图 9.是本发明的 5016型插孔射频同轴连接器的示意图; 图 10.是本发明的 5016型插孔射频同轴连接器 M12部分的局部放大 图;
图 11.是本发明的 5016型插孔射频同轴连接器 M13部分的局部放大 图; 图 12.是本发明的 5016型射频同轴连接器的防松弹性垫圈的三维 示意图。 其中: 1、 5016型空气介质插针连接器, la、 5016型非空气介质 插针射频连接器, 11、 外导体, 111、 端面, l l la、 倒圆, 112、 缩径 环形槽, 112a、 槽深, 113、 轴, 114、 内径, 12、 内导体插针, 121、 球面或锥面, 122、 后段圆柱面, 13、 螺套, 131、 内螺纹, 132、 搬 手工作面, 14、 0型密封圈, 15、 防松弹性垫圈, 16、 非空气绝缘介 质, 161及 162、 环形台阶, 2、 5016型插孔连接器, 21、 外导体, 22、 内导体插孔, 211外螺纹、, 212、 18mm基准孔, 212a、 孔口倒 R 圆弧, 213、 外导体轴向定位面, 213a、 孔根圆弧面, 214、 外导体定 位面宽度, 215、 凹面环形槽的上边斜角, 215a、 圆弧面, 216、 外导 体内径, 22、 内导体插孔, 221、 径口, 221a、 内侧, 221b、 外侧。
具体实施例
下面结合附图对本发明的 5016 型射频同轴连接器的具体实施方 式作进一歩的描述。 图 6示出了本发明的空气介质插针连接器 1 ; 该连接器 1包括外 导体 11、 内导体插针 12、 螺套 13、 0型密封圈 14和防松弹性垫圈 15。外导体 11的标称内径 114为 16mm,其机械电气基准面为端面 111, 外导体 11的内径 114端口无倒角或倒圆,外径轴 1 13为 18mm基孔制 小间隙配合的轴, 外端口有倒圆 111a; 同时, 在外圆面的根部有一 个缩径环形槽 112, 槽深 1 12a为 0. 2mn!〜 0. 4匪, 在所述槽上套有 0 型密封圈 14; 由于连接器在尚未连接前的状态下, 此 0型密封圈 14 非常容易自由脱落; 特别是在不查觉的情况下, 0型密封圈 14脱落 而缺失所带来的有害气体和湿气的侵入,其后果对微波传输是非常严 重致命的; 其凹面环形槽部分的局部放大见图 8; 在外导体 11 的外 圆上设置有螺套 13 ; 螺套 13的底部和外导体径部之间设置有防松弹 性垫圈 15, 内导体插针 12由球面或锥面 121与后段圆柱面 122相贯 而成。 图 7示出了本发明的非空气介质插针射频连接器 la; 该连接器除 包括上述的外导体 11、 内导体插针 12、 螺套 13、 0型密封圈 14和防 松弹性垫圈 15外, 还包括有非空气介质 16; 并在非空气介质 16的 端面设置有一个环形台阶 161和 162构成的阻抗连续性补偿设计。本 非空气介质射频连接器 la, 是充分考虑到实际应用的适当场合使设 计更加紧凑性及简捷性, 其基本原理与 5016空气介质相同, 仅是相 对介质常数的区别。
图 9示出了本发明的插孔连接器 2 ; 该连接器包括外导体 21和内 导体插孔 22。外导体的标称内径 216为 16mm,其机械电气基准面设置 在外导体端面深度为 5mn!〜 7mm的台阶面上, 此台阶面为外导体标称 内径 16mm与径向定位的 18mm基准孔 212复合而成的外导体定位面 213; 内导体插孔 22端口为反向的复合孔, 并在径口 221 内侧 221a 和外侧 221b设置有不同的 R圆弧, 内导体插孔 M13部分的局部放大见 图 11 ; 在外导体标称内径 16mm与径向定位 18mm基准孔 212复合而 交界的径向面上的外导体定位面 213, 设置有深度为 0. 5mm, 外导 体定位面宽度 214为 0. 5mn!〜 2. 0mm的凹面清根槽, 所述凹面清根槽 的上边斜角 215 为 135 ° ^ 150 ° ,并在各要素交接处用圆弧面 213a和 215a光滑连接,外导体定位面 213根部的凹面环形槽 M12部分 的局部放大见图 10。 图 12示出了本发明的 5016射频连接器安装在螺套 13底部,和插 针连接器外导体 11外径部的防松弹性垫圈 15 ; 防松弹性垫圈 15的 外轴向端面为 8〜16个均布的波峰及波谷形成,所述的波峰及波谷叠 加厚度为 lmn!〜 3mm; 由弹性金属材料制成。
本发明的 5016型射频同轴连接器设置有两种细牙螺纹,一种是适 应于长久连接的室外场合的单线螺纹;另一种是适用于需要经常装卸 的场合的多线螺纹; 由于本发明产品的单线螺纹时导程为 l. Omm, 小 于现有的导程 1. 5mm; 再加上所增设的防松弹性垫圈, 所以, 其单头 螺纹的自锁性, 即防松性能一定优于现有产品; 而多头螺纹在增设弹 性垫圈的作用下, 其防松性能也不亚于现有产品。 另外, 由于连接部 分尺寸和体积的减小, 使重量由原来的 95克 (按黄铜计算, 以下均 同), 降低为 56克, 表面积由原来的 1. 13dm2,降低为 0. 79dm2,重量和 表面积分别下降了 31. 6%和 30. 0%。 因此, 本发明的 5016射频连接器 每对产品可降低黄铜消耗约 40克; 同时也降低电镀费用, 更重要的 意义是可为全球低碳生产作出了一方面的贡献。 另外本发明的 5016 射频连接器最大外形尺寸的减小也使通信设备的安装空间可以更加 节约, 应用场合也进一歩扩大。
图 4示出了空气介质插针连接器与插孔连接器连接的状态, 图 5 示出了非空气介质插针连接器与插孔连接器连接的状态; 图 5.中在 图 4.的基本结构上增设了非空气绝缘介质 16,图 5中的插针 12与非 空气绝缘介质 16相配合的外径尺寸 123, 见图 7, 可以由特性阻抗 Z。、 外导体内径 D、 尺寸 123外径 d、 相对介质常数 ε的关系式 (1 )
Figure imgf000015_0001
所以,图 4和图 5所示出的 5016射频同轴连接器在连接时其操作 方式是相同的; 连接时, 首先依靠插孔连接器图 9.中的 18mm基准孔 212与图 6或图 7中的外圆 18mm小间隙配合的轴 113,可以起到精确 的径向定位作用; 当插针连接器与插孔连接器插合时, 由于插针端面 121为球面或锥面, 并且插孔径口 221的内侧 221a和外侧 221b设置 为不同的 R圆弧面 (详见图 11 ), 使针与孔在插拔过程中具有最小的 摩擦力; 特别是在经常插拔的场合, 使机械耐久性成倍增加; 另一方 面,从当代数控机床广泛应用及制造精度可轻松达标的考虑,对 18mm 基准孔 212和外圆 18mm小间隙配合的轴 113, 以及外导体标称内径 的制造公差带进行了改进; 同时, 将现有的 7-16型射频同轴连接器 的外导体标称内径 313和 413 (详见图 2和图 3 )的 0. 40mm的粗级公
〔进为 5016型射频同轴连接器标称内径 114和 216的 (详见图
6和图 9 ) 0. 06mm的中级公差; 这是由于插针连接器和插孔连接器: 多数情况下是由不同制造商生产的, 现有的实践经验已充分证明: 定 位精度及对接后的同轴度偏差过大,其射频连接器本身的反射系数等 电气性能将极度变差;电气性能质量的优劣与特性阻抗的匹配密切相 关, 而 50 Ω射频连接器的特性阻抗误差 ΔΖ、 与不同轴度 e、 和外导 体内径 D之间的电性能关系可以从 (2 ) 式得出。
Figure imgf000016_0001
将现有的 7-16型射频同轴连接器与本发明的 5016型射频同轴连 接器的不同轴度 e误差所造成的特性阻抗误差 ΔΖ值分别代入 (2)式 比较如下:
7 - 16型
5016型
Figure imgf000016_0002
(0. 4 + 0. 37)2
296
162 0. 6855
5. 1285
(0. 06 + 0. 28)2 - 0. 1337
296
162
由此可见: 现有的 7-16型特性阻抗误差 值要高出本发明的 5016型约 5. 1285倍。
螺纹联接强度及自锁能力的试验及验证如下:
螺纹连接机构的预紧力 F。;
黄铜螺栓预紧力 F。=安全系数 μ X材料屈服极限 σ δ Χ螺栓的危险截 面积
Figure imgf000016_0003
黄铜螺栓拧紧力矩 Τ;
黄铜螺栓拧紧力矩 Τ=拧紧力矩系数 Κ Χ预紧力 F。X螺纹公称直径 d=20. 28 N. n!〜 25. 34 N. m 本发明专利的螺纹机构拉力试验,按 GB3098.1(等同于 IS0898-1) 第 8.1和 8.2条的规定进行了试验, 优于规定值的 200%;
本发明专利的螺纹机构扭矩试验, 按 GB3098.6 (等同于 IS03506-1) 第 7.2条的规定进行了试验, 优于规定值的 200%;
本发明专利的螺纹机构螺母保证载荷试验, 按 GB3098.2 (等同于 IS0898-2) 第 8章的规定进行了试验, 优于规定值的 200%;
本发明专利螺纹机构的单线或四线螺纹升角 Ψ=0.85° 〜3.4Γ , 远远小于螺旋副的当量摩擦角 Ψν 6.8° ; 因此, 本发明专利螺纹副 无论是单线还是四线都能优于满足自锁条件(Ψ<< Ψν)。 另外, 本 发明专利又增加了弹性机械防松措施,其防松可靠性比现有的的 7/16 型射频同轴连接器进一歩得到了加强。 见图 4或图 5; 拧紧螺套 13, 防松弹性垫圈 15被压缩; 其插针连 接器机械电气基准面 111, 与插孔连接器的机械电气基准面 213则被 轴向精确定位, 并完全无间隙吻合; 此时, 连接器对的内导体接触法 向面, 以及外导体的接触法向面均保持着足够的压力, 同时, 外导体 标称内径达到了较精密的同轴度。 因此, 保证了 5016射频同轴连接 器具有更高的阻抗连续性, 和接近零的接触非线性。

Claims

权 利 要 求
1、 一种 5016型射频同轴连接器, 包括作为公端的插针连接器和 作为母端的插孔连接器,其中插针连接器包括:外导体、内导体插针、 外导体上设有的螺套, 插孔连接器包括外导体、 内导体插孔以及外导 体外圆上设有的外螺纹,其特征是所述的螺套与外螺纹采用 M22螺纹 连接, 所述插针连接器的机械电气基准面设置在其外导体的端面上, 所述插孔连接器的机械电气基准面设置在其外导体端面深度为 5mn!〜 7mm的台阶面上,此台阶面由外导体标称内径 16mm与径向定位的 18mm 基准孔复合而成。
2、 如权利要求 1所述的 5016型射频同轴连接器, 其特征是在所 述的螺套与外螺纹为 M22 X Ph ( 1〜4 ) P1的单线或多线螺纹, 该螺套 的扳手工作面为 25匪, 该扳手工作面外形为 2〜6边。
3、 如权利要求 1所述的 5016型射频同轴连接器, 其特征是所述 插针连接器的插针端面为球面或锥面,插针连接器的插针由球面或锥 面与后段圆柱面相贯而成, 该后段圆柱面的直径为 4. 80mn!〜 4. 86mm, 轴向长度为 1. 5mn!〜 2. 2mm, 该后段圆柱面即为插针与插孔的接触段, 所述插孔连接器的插孔径口为反向的复合孔,所述的径口的轴向长度 为 0. 30mn!〜 1. 15mm, 在该径口的外侧设置有外侧圆弧面, 其弧面的 R 为 0. 20mn!〜 0. 35mm, 在该径口的内侧设置有内侧圆弧面, 其弧面的 R 为 0. lmm〜0. 2mmo
4、 如权利要求 1所述的 5016型射频同轴连接器, 其特征是在所 述的插针连接器的外导体外径 18mm轴根部设置有一个的缩径环形 槽, 在所述的缩径环形槽内套有 0型密封圈。
5、 如权利要求 1所述的 5016型射频同轴连接器, 其特征是所述 插孔连接器径向定位孔与所述插孔连接器径向定位轴之间的最大配 合间隙小于 0. 28mm; 所述的插孔连接器和插针连接器的外导体内径 都为 16mm, 其公差值为 0. 06mm。
6、 如权利要求 1所述的 5016型射频同轴连接器, 其特征是所述 插孔连接器的外导体标称内径 16mm与径向定位 18mm基准孔复合而交 界的径向面上设置有一凹面清根槽, 其深度为 0. 5匪〜 1匪, 宽度为 0. 5mn!〜 2. 0mm, 该凹面清根槽的上边斜角为 135 ° α 150 ° 。
7、 如权利要求 1所述的 5016型射频同轴连接器, 其特征是在所 述的插针连接器在外导体内部和内导体外部之间为空气介质和非空 气介质两种绝缘介质, 其中非空气介质为非金属绝缘材料介质, 该非 金属绝缘材料介质在靠近机械基准面前端起到内外导体支撑作用。
8、 如权利要求 7所述的 5016型射频同轴连接器, 其特征是在所 述的非金属绝缘材料介质的端面上设置有一个起到阻抗连续性补偿 作用的环形台阶结构。
9、 如权利要求 1所述的 5016型射频同轴连接器, 其特征是在所 述的插针连接器的螺套底部与其外导体外圆径部之间设置有一个防 松弹性垫圈,该防松弹性垫圈轴向端面为 8〜 16个均布的波峰及波谷 形成, 所述的波峰及波谷叠加厚度为 lmn!〜 3匪。
10、如权利要求 1至 9任一项所述的 5016型射频同轴连接器, 其 特征是所述插孔连接器径向定位孔公称直径为 18mm, 所述插针连接 器径向定位轴公称直径为 18mm, 所述的径向定位孔端口和径向定位 轴端面上均设置有圆弧, 该圆弧 R为 0. 30匪〜 0. 60匪。
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