CN113437454A - Radio frequency coaxial switch - Google Patents
Radio frequency coaxial switch Download PDFInfo
- Publication number
- CN113437454A CN113437454A CN202110708984.9A CN202110708984A CN113437454A CN 113437454 A CN113437454 A CN 113437454A CN 202110708984 A CN202110708984 A CN 202110708984A CN 113437454 A CN113437454 A CN 113437454A
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- inner conductor
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- 239000004020 conductor Substances 0.000 claims abstract description 143
- 239000012212 insulator Substances 0.000 claims abstract description 36
- 230000013011 mating Effects 0.000 claims abstract description 4
- 230000033001 locomotion Effects 0.000 abstract description 9
- 238000012360 testing method Methods 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/10—Auxiliary devices for switching or interrupting
- H01P1/12—Auxiliary devices for switching or interrupting by mechanical chopper
- H01P1/125—Coaxial switches
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- Coupling Device And Connection With Printed Circuit (AREA)
Abstract
本发明公开了一种射频同轴开关，包括内导体、绝缘体、外导体、外螺纹套、内螺纹套；绝缘体设置于内导体和外导体之间，内螺纹套转动安装在外导体上，内螺纹套螺接在外螺纹套外侧，外螺纹套与内导体之间通过连接件连接，外导体上设置限制内导体和外螺纹套轴向转动的限位件；当内螺纹套绕外导体转动时，带动外螺纹套和内导体沿开关轴线方向来回滑动，从而实现内导体与互配端内导体之间的接通与断开两种状态。本发明通过巧妙地结构设计及将内螺纹套的旋转运动转化成了内导体沿开关轴线的直线运动，从而实现了本开关与其互配端内导体的接通、分离功能，大大简化了某些测试场景下射频单元频繁加载及卸载的切换操作，可在免拆卸的情况下实现该功能。
The invention discloses a radio frequency coaxial switch, comprising an inner conductor, an insulator, an outer conductor, an outer thread sleeve and an inner thread sleeve; the insulator is arranged between the inner conductor and the outer conductor, the inner thread sleeve is rotatably mounted on the outer conductor, and the inner thread The sleeve is screwed on the outer side of the outer threaded sleeve, the outer threaded sleeve and the inner conductor are connected by connecting pieces, and the outer conductor is provided with a limiter that restricts the axial rotation of the inner conductor and the outer threaded sleeve; when the inner threaded sleeve rotates around the outer conductor, The outer threaded sleeve and the inner conductor are driven to slide back and forth along the axis direction of the switch, so as to realize the on and off states between the inner conductor and the inner conductor of the mating end. The present invention realizes the connection and separation functions of the switch and the inner conductor of the matching end by ingenious structural design and transforms the rotary motion of the inner threaded sleeve into the linear motion of the inner conductor along the axis of the switch, and greatly simplifies certain functions. In the test scenario, the switching operation of frequent loading and unloading of the RF unit can realize this function without disassembly.
Description
Technical Field
The invention belongs to the technical field of radio frequency connectors, and particularly relates to a radio frequency coaxial switch.
Background
Radio frequency coaxial switches are often needed in some communication equipment test scenes, but the operation process of the existing radio frequency coaxial switches is often more complicated, so that the problem of inconvenient operation is brought when the loading and unloading states are frequently switched.
Disclosure of Invention
In order to overcome the problems in the related art, the invention provides a radio frequency coaxial switch applicable to a test scenario of communication equipment, which is particularly suitable for an occasion that a feed port of a radio frequency unit needs to be frequently switched between a loading state and an unloading state. The radio frequency coaxial switch provided by the invention can conveniently realize the switching of the states through the thread transmission mechanism without disassembling the connector body of the feed port, thereby greatly simplifying the operation and effectively improving the test efficiency. The invention is realized by the following technical scheme:
providing a radio frequency coaxial switch, wherein the switch comprises an inner conductor, an insulator, an outer conductor, an external thread sleeve and an internal thread sleeve;
the insulator is arranged between the inner conductor and the outer conductor, the internal thread sleeve is rotatably installed on the outer conductor, the internal thread sleeve is screwed outside the external thread sleeve, the external thread sleeve is connected with the inner conductor through a connecting piece, and the outer conductor is provided with a limiting piece for limiting the axial rotation of the inner conductor and the external thread sleeve;
when the internal thread sleeve rotates around the external conductor, the external thread sleeve and the internal conductor are driven to slide back and forth along the axis direction of the switch, so that the two states of connection and disconnection between the internal conductor and the internal conductor of the mutual matching end are realized.
As a further explanation of the present invention, the inner conductor includes a first inner conductor and a second inner conductor, the first inner conductor is used for realizing connection and disconnection with the inner conductor of the mutual matching end, and the first inner conductor is always mechanically and electrically connected with the second inner conductor when the first inner conductor slides back and forth along the direction of the switch axis.
As a further illustration of the present invention, an end of the first inner conductor away from the switch interface is configured as a slotted elastic jack structure, and an end of the second inner conductor is inserted into the slotted elastic jack structure, so as to form a mechanical and electrical connection with the second inner conductor.
As a further illustration of the present invention, the grooved resilient socket structure is provided with a flange extending inwardly of the hole.
As a further explanation of the present invention, the connecting member includes a first pin and a second pin, the external thread sleeve is sleeved outside the outer conductor, the external thread sleeve is provided with two side holes distributed along a radial direction of the external thread sleeve at 180 °, a through hole is arranged in a diameter direction of the first inner conductor, the first pin is inserted from the side hole at one end and then extends into the through hole, and the second pin is inserted from the side hole at the other end and then is screwed with the first pin, so that connection and fixation among the connecting member, the external thread sleeve and the first inner conductor are realized.
As a further explanation of the present invention, facets for positioning the first pin and the second pin are provided at both ends of the through hole.
As a further explanation of the present invention, the limiting member includes two sliding grooves disposed in the radial direction of the outer conductor and distributed at 180 °, and the first pin and the second pin are respectively inserted into the sliding grooves at both ends and can slide back and forth along the sliding grooves.
As a further explanation of the present invention, two position-limiting regions with reduced width are disposed on the inner surface of the sliding groove, and the width dimension of the position-limiting regions is smaller than the maximum outer diameters of the first pin and the second pin.
As a further description of the present invention, the insulator includes a first insulator and a second insulator, the first inner conductor and the first insulator are in clearance fit, the second inner conductor and the second insulator are in interference fit, and the outer sides of the first insulator and the second insulator are both limited at corresponding positions in the outer conductor.
As a further explanation of the present invention, the internal thread bushing is rotatably mounted on the outer conductor through a first bearing, a second bearing, a step on the outer conductor, and a nut at both ends.
Compared with the prior art, the invention has the following beneficial technical effects:
the switch realizes the switching-on and switching-off functions of the switch and the inner conductor of the matching end of the switch by skillfully designing the structure and converting the rotary motion of the inner thread sleeve into the linear motion of the inner conductor along the axis of the switch, greatly simplifies the switching operation of frequent loading and unloading of the radio frequency unit under certain test scenes, and can realize the functions under the condition of no disassembly.
Drawings
Fig. 1 is a schematic cross-sectional structure diagram of a radio frequency coaxial switch provided by the present invention;
fig. 2 is a schematic cross-sectional structure diagram of the on-state of the rf coaxial switch according to the present invention;
fig. 3 is a schematic cross-sectional view of the rf coaxial switch according to the present invention in an off state;
fig. 4 is an exploded view of the rf coaxial switch according to the present invention;
fig. 5 is a schematic perspective view of a first inner conductor of the rf coaxial switch according to the present invention;
fig. 6 is a schematic perspective view of an external thread sleeve and an internal thread sleeve of the rf coaxial switch provided by the present invention;
fig. 7 is a schematic perspective view of an outer conductor of the rf coaxial switch according to the present invention.
Description of the reference numerals
1-a first inner conductor; 1 a-a via; 1 b-a facet; 1 c-a slotted elastic jack structure; 1 d-flange; 2-a second inner conductor; 3-a first insulator; 4-a second insulator; 5-a first pin; 6-a second pin; 7-external thread sleeve; 7 a-side hole; 8-an internal thread sleeve; 9-a first bearing; 10-a second bearing; 11-a nut; 12-an outer conductor; 12 a-a chute; 12 b-a limit area; 12 c-step; 12 d-first spur; 12 e-second spur.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The technical solution of the present invention will be explained with reference to specific embodiments.
As shown in fig. 1-7, a radio frequency coaxial switch is provided, the switch comprising an inner conductor, an insulator, an outer conductor 12, an externally threaded sleeve 7, an internally threaded sleeve 8;
the insulator 14 is arranged between the inner conductor and the outer conductor 12, the internal thread sleeve 8 is rotatably mounted on the outer conductor 12, the internal thread sleeve 8 is screwed outside the external thread sleeve 7, the external thread sleeve 7 is connected with the inner conductor through a connecting piece, and the outer conductor 12 is provided with a limiting piece for limiting the axial rotation of the inner conductor and the external thread sleeve 7;
when the internal thread sleeve 8 rotates around the external conductor 12, the external thread sleeve 7 and the internal conductor are driven to slide back and forth along the axis direction of the switch, so that the two states of connection and disconnection between the internal conductor and the internal conductor of the matched end are realized.
According to the invention, the rotary motion of the internal thread sleeve 8 is converted into the linear motion of the inner conductor along the axis of the switch through the design, so that the connection and separation functions of the switch and the inner conductor at the matched end of the switch are realized.
In an achievable manner, the internally threaded sleeve 8 is rotatably mounted on the outer conductor 12 by means of a first bearing 9, a second bearing 10 at both ends, a step 12c on the outer conductor 12 and a nut 11.
The internal thread sleeve 8 and the external thread sleeve 7 are meshed with each other to form a pair of thread pairs, standard trapezoidal transmission threads are preferably selected between the internal thread sleeve 8 and the external thread sleeve 7, and threads with other tooth forms can also be selected.
In an implementable manner, the internally threaded sleeve 8 and the externally threaded sleeve 7 are preferably left-handed threads, in order to facilitate the operating habit of locking (i.e. the on state of the present switch) by rotating clockwise (i.e. the off state of the present switch) and unlocking (i.e. the off state of the present switch) next to the usual thread pair (the object of rotation is the internally threaded sleeve 8, the normal of the plane of rotation being directed from the switch tail to the switch interface end). Of course, the right-hand thread is selected without affecting the function.
In a realisable manner, the internally threaded sleeve 8 and the externally threaded sleeve 7 can be designed as single-or multiple-lead threads. The purpose of the multi-start thread is to provide a greater sliding travel of the inner conductor with a smaller number of turns of the internally threaded sleeve 8. For example, a double start thread with a thread pitch of 2 and a lead of 4 is used.
In an implementation mode, the internal thread sleeve 8 is preferably made of a good metal conductor, so that the radio frequency leakage of the switch can be effectively reduced, and the radio frequency interference resistance of the switch is improved; the external thread sleeve 7 is preferably made of an electric insulating material, so that the intermodulation power of the switch can be effectively reduced.
In an realizable manner, the inner conductor comprises a first inner conductor 1 and a second inner conductor 2, the first inner conductor 1 is used for realizing connection and disconnection with the inner conductor of the mutual end, and the first inner conductor 1 is always in mechanical and electrical connection with the second inner conductor 2 when the first inner conductor 1 slides back and forth along the direction of the switch axis.
Specifically, one end of the first inner conductor 1, which is far away from the switch interface, is provided with a slotted elastic jack structure 1c, and one end of the second inner conductor 2 is inserted into the slotted elastic jack structure 1c, so as to form mechanical and electrical connection with the second inner conductor 2.
Further, the slotted elastic jack structure 1c is provided with a flange 1d extending inwards, and the flange 1d is used for improving the stability of the electrical connection between the first inner conductor 1 and the second inner conductor 2.
In a realizable mode, the connecting piece includes first pin 5 and second pin 6, 7 covers of external screw thread cover are established the outer conductor 12 outside, be provided with on the external screw thread cover 7 along its radial two side openings 7a that are 180 distributions, be provided with through-hole 1a on the 1 diameter direction of first inner conductor, first pin 5 is from one end side opening 7a inserts the back and stretches into through-hole 1a, second pin 6 is from the other end side opening 7a insert the back with 5 spiro unions of first pin, thereby realize connecting piece, external screw thread cover 7 and connect between the first inner conductor 1 fixedly.
The first pin 5 and the second pin 6 are preferably formed by processing using an electrically insulating material.
Further, the through hole 1a is provided with small planes 1b for positioning the first pin 5 and the second pin 6 at two ends thereof, so as to facilitate the installation and positioning of the first pin 5 and the second pin 6.
In an achievable mode, the limiting member includes two sliding grooves 12a disposed at 180 ° in the radial direction of the outer conductor 12, and the first pin 5 and the second pin 6 are respectively inserted into the sliding grooves 12a at both ends and can slide back and forth along the sliding grooves 12 a; the chute 12a has three functions: firstly, a space is reserved for the first pin 5 and the second pin 6, so that the first pin and the second pin can be connected with the external thread sleeve 7; secondly, the first inner conductor 1 and the external thread sleeve 7 are limited to rotate around the axis of the switch; thirdly, the sliding range of the first inner conductor 1 along the switch axis is limited.
Furthermore, two position-limiting areas 12b with reduced width are arranged on the inner surface of the sliding groove 12a, and the width dimension of the position-limiting areas 12b is smaller than the maximum outer diameters of the first pin 5 and the second pin 6; the design enables an operator to determine the positions of the first pin 5 and the second pin 6 in the sliding groove 12a by sensing the resistance change when the first pin 5 and the second pin 6 slide in the sliding groove 12a, so as to judge whether the first inner conductor 1 and the inner conductor of the mating end are in the insertion state or the disconnection state.
In an implementable manner, the insulator comprises a first insulator 3 and a second insulator 4, the first inner conductor 1 and the first insulator 3 are in clearance fit, the second inner conductor 2 and the second insulator 4 are in interference fit, and the outer sides of the first insulator 3 and the second insulator 4 are limited at corresponding positions in the outer conductor 12.
The clearance fit between the outer surface of the first inner conductor 1 and the inner bore surface of the first insulator 3 as described above should ensure that the first inner conductor 1 is substantially coaxial with the outer conductor 12 and does not interfere with the sliding movement of the first inner conductor 1 along the switch axis.
The interference fit between the second inner conductor 2 and the second insulator 4 should ensure that the second inner conductor 2 and the outer conductor 12 are substantially coaxial.
In addition, the second inner conductor 2 can be fixed with the outer conductor 12 in the axial direction through a cable welded at the tail of the switch (suitable for the case that the switch needs to be connected with the cable), or can be fixed through arranging barbs or other structures between the matching surfaces of the second inner conductor 2 and the second insulator 4 (suitable for the case that the switch does not need to be connected with the cable).
The first insulator 3 and the outer conductor 12 are fixed by a first spur 12d on the surface of the inner hole of the outer conductor 12; the second insulator 4 and the outer conductor 12 are fixed by a second protrusion 12e on the inner surface of the outer conductor 12.
In summary, the switch and the inner conductor of the mating end of the switch are connected (see fig. 2) and separated (see fig. 3) by skillfully designing the structure and converting the rotary motion of the internal thread sleeve 8 into the linear motion of the first inner conductor 1 along the switch axis, so that the frequent loading and unloading switching operation of the radio frequency unit in certain test scenes is greatly simplified.
The embodiments given above are preferable examples for implementing the present invention, and the present invention is not limited to the above-described embodiments. Any non-essential addition and replacement made by the technical characteristics of the technical scheme of the invention by a person skilled in the art belong to the protection scope of the invention.
Claims (10)
1. A radio frequency coaxial switch is characterized in that the switch comprises an inner conductor, an insulator, an outer conductor, an external thread sleeve and an internal thread sleeve;
the insulator is arranged between the inner conductor and the outer conductor, the internal thread sleeve is rotatably installed on the outer conductor, the internal thread sleeve is screwed outside the external thread sleeve, the external thread sleeve is connected with the inner conductor through a connecting piece, and the outer conductor is provided with a limiting piece for limiting the axial rotation of the inner conductor and the external thread sleeve;
when the internal thread sleeve rotates around the external conductor, the external thread sleeve and the internal conductor are driven to slide back and forth along the axis direction of the switch, so that the two states of connection and disconnection between the internal conductor and the internal conductor of the mutual matching end are realized.
2. The rf coaxial switch of claim 1, wherein the inner conductor comprises a first inner conductor and a second inner conductor, the first inner conductor is configured to be connected to and disconnected from the inner conductor of the mating terminal, and the first inner conductor is always in mechanical and electrical connection with the second inner conductor when the first inner conductor slides back and forth along the switch axis.
3. The rf coaxial switch of claim 2, wherein an end of the first inner conductor remote from the switch interface is configured as a slotted resilient receptacle structure, and an end of the second inner conductor is inserted into the slotted resilient receptacle structure to form a mechanical and electrical connection with the second inner conductor.
4. The rf coaxial switch of claim 3, wherein the slotted elastomeric receptacle structure is provided with a flange extending inwardly of the bore.
5. The radio frequency coaxial switch according to claim 2, wherein the connecting member comprises a first pin and a second pin, the external thread sleeve is sleeved on the outer side of the outer conductor, two side holes distributed along the radial direction of the external thread sleeve are arranged on the external thread sleeve, a through hole is arranged in the diameter direction of the first inner conductor, the first pin is inserted into the through hole from one end of the side hole, and the second pin is screwed with the first pin after being inserted into the side hole from the other end of the side hole, so that the connecting member, the external thread sleeve and the first inner conductor are fixedly connected.
6. The radio frequency coaxial switch according to claim 5, wherein facets for positioning the first pin and the second pin are provided at both ends of the through hole.
7. The rf coaxial switch according to claim 5, wherein the stopper includes two sliding grooves disposed at 180 ° in a radial direction of the outer conductor, and the first pin and the second pin are respectively inserted into the sliding grooves at two ends and can slide back and forth along the sliding grooves.
8. The radio frequency coaxial switch according to claim 7, wherein two position-limiting regions with reduced width are disposed on the inner surface of the sliding groove, and the width of the position-limiting regions is smaller than the maximum outer diameters of the first pin and the second pin.
9. The rf coaxial switch of claim 2, wherein the insulator comprises a first insulator and a second insulator, the first inner conductor and the first insulator are in a clearance fit, the second inner conductor and the second insulator are in an interference fit, and the outer sides of the first insulator and the second insulator are each limited at a corresponding position in the outer conductor.
10. The rf coaxial switch of claim 1, wherein the internally threaded sleeve is rotatably mounted to the outer conductor by a first bearing, a second bearing, a step on the outer conductor, and a nut at both ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110708984.9A CN113437454A (en) | 2021-06-25 | 2021-06-25 | Radio frequency coaxial switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110708984.9A CN113437454A (en) | 2021-06-25 | 2021-06-25 | Radio frequency coaxial switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113437454A true CN113437454A (en) | 2021-09-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110708984.9A Pending CN113437454A (en) | 2021-06-25 | 2021-06-25 | Radio frequency coaxial switch |
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| Country | Link |
|---|---|
| CN (1) | CN113437454A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201699271U (en) * | 2010-03-25 | 2011-01-05 | 上海航天科工电器研究院有限公司 | Radio-frequency coaxial connector with adjustable phase |
| CN204045890U (en) * | 2014-08-28 | 2014-12-24 | 北京无线电计量测试研究所 | A kind of phase place adjustable radio frequency cable connector |
| CN207868362U (en) * | 2017-12-27 | 2018-09-14 | 南京安崇电子有限公司 | A kind of New-type radio-frequency open circuit device |
| CN215644917U (en) * | 2021-06-25 | 2022-01-25 | 中航富士达科技股份有限公司 | Radio frequency coaxial switch |
-
2021
- 2021-06-25 CN CN202110708984.9A patent/CN113437454A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201699271U (en) * | 2010-03-25 | 2011-01-05 | 上海航天科工电器研究院有限公司 | Radio-frequency coaxial connector with adjustable phase |
| CN204045890U (en) * | 2014-08-28 | 2014-12-24 | 北京无线电计量测试研究所 | A kind of phase place adjustable radio frequency cable connector |
| CN207868362U (en) * | 2017-12-27 | 2018-09-14 | 南京安崇电子有限公司 | A kind of New-type radio-frequency open circuit device |
| CN215644917U (en) * | 2021-06-25 | 2022-01-25 | 中航富士达科技股份有限公司 | Radio frequency coaxial switch |
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