CN113922100A - Split type antenna reflecting disc and satellite antenna - Google Patents
Split type antenna reflecting disc and satellite antenna Download PDFInfo
- Publication number
- CN113922100A CN113922100A CN202111208977.9A CN202111208977A CN113922100A CN 113922100 A CN113922100 A CN 113922100A CN 202111208977 A CN202111208977 A CN 202111208977A CN 113922100 A CN113922100 A CN 113922100A
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- Prior art keywords
- split
- antenna
- reflecting
- panels
- reflector
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- Legal status (The legal status 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 status listed.)
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- 230000005291 magnetic effect Effects 0.000 claims abstract description 42
- 230000005294 ferromagnetic effect Effects 0.000 claims description 28
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 5
- 238000009434 installation Methods 0.000 abstract description 10
- 230000005389 magnetism Effects 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 4
- 229920000049 Carbon (fiber) Polymers 0.000 description 3
- 239000004917 carbon fiber Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000007731 hot pressing Methods 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/14—Reflecting surfaces; Equivalent structures
- H01Q15/16—Reflecting surfaces; Equivalent structures curved in two dimensions, e.g. paraboloidal
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
- H01Q1/288—Satellite antennas
Abstract
The application relates to a split type antenna reflecting disc and satellite antenna, wherein split type antenna reflecting disc includes: the split-type spliced reflecting surface disc comprises a plurality of split reflecting panels, and the adjacent split reflecting panels are detachably connected; the split reflection panel is characterized in that the connecting parts of the split reflection panels are respectively provided with a plug connector for positioning and a magnetic part for locking, so that the split reflection panels are connected into an integral structure. The split spliced reflecting surface disc forms the main body structure of the antenna reflecting disc, and the antenna reflecting disc can be more easily disassembled and assembled through the split reflecting panels detachably connected, so that the portability of the satellite antenna is effectively ensured. Through the plug connector and the magnetism piece of inhaling that set up before polylith split reflection panel, guaranteed the installation accuracy of components of a whole that can function independently structure when connecting to can make connecting more firm between the split reflection panel.
Description
Technical Field
The application relates to the technical field of satellite antennas, in particular to a split type antenna reflecting disc and a satellite antenna.
Background
The portable satellite antenna is a parabolic antenna with an effective caliber less than or equal to 1.2M, and the antenna surface is made of carbon fiber and honeycomb materials through hot pressing.
The portable satellite antenna has the advantages of light weight, small volume, easy assembly, disassembly, transportation, deployment and the like, is often used as a mobile satellite substation in a VSAT system, can realize the opening of global data video service by matching with a satellite modem, a video conference terminal, a BUC and other equipment, and is also an important communication means for teleconferencing, telemedicine, emergency command and disaster recovery.
The portable satellite antennas applied to different scenes are split in order to ensure portability, and specific splitting is also divided into various forms, including structural forms such as offset feed six-splitting, offset feed four-splitting and positive feed eight-splitting.
To ensure quick assembly of the segments, various locking members are typically used to effect the connection between the segments.
The most forms such as hinges that adopt of retaining member that has now need parts such as screw to connect or dismantle at dismouting in-process, and operating time is longer, and the dismouting is inefficient, and the retaining member generally connects between two split structures, can not play good location, is difficult to guarantee the curved surface precision of post-assembly antenna face after connecting a plurality of split structures.
Disclosure of Invention
The utility model provides a split type antenna reflecting disc and satellite antenna, this split type antenna reflecting disc include the split type reflecting panel of the removable assecmbly of polylith components of a whole that can function independently concatenation, can quick assembly disassembly to can guarantee curved surface precision and joint strength after the equipment.
In order to achieve the above object, in a first aspect, the present invention provides a split antenna reflector plate, including: the split-type spliced reflecting surface disc comprises a plurality of split reflecting panels, and the adjacent split reflecting panels are detachably connected;
the split reflection panel is characterized in that the connecting parts of the split reflection panels are respectively provided with a plug connector for positioning and a magnetic part for locking, so that the split reflection panels are connected into an integral structure.
The split spliced reflecting surface disc forms the main body structure of the antenna reflecting disc, and the antenna reflecting disc can be more easily disassembled and assembled through the split reflecting panels detachably connected, so that the portability of the satellite antenna is effectively ensured.
Through the plug connector and the magnetism piece of inhaling that set up before polylith split reflection panel, guaranteed the installation accuracy of components of a whole that can function independently structure when connecting to can make connecting more firm between the split reflection panel.
In an optional embodiment, the magnetic connector and the magnetic suction member are of an integral structure, and the magnetic suction member and the magnetic connector are arranged on the connecting end surface of the split reflection panel.
Through setting up plug connector and magnetism to the overall structure of same constitution, can make split reflection panel can realize the fastening connection in the location installation, greatly improve the installation effectiveness of antenna reflector dish, through with location and locking function integration together, retrench the component structure, guaranteed to connect the convenience.
In an optional implementation manner, the magnetic attraction piece comprises an anode strong magnet and a cathode strong magnet which are respectively arranged on the adjacent split reflection panel, and the plug connector comprises a convex strip and a slot which are respectively arranged on the anode strong magnet and the cathode strong magnet and can be matched with each other.
In an optional embodiment, the plug connector and the magnetic attraction piece are of a split structure, and the magnetic attraction piece is adhered to the plug connector.
Through setting up connector clip and magnetism to the components of a whole that can function independently structure of different constitutions, can realize the used repeatedly of same split reflection panel on different antenna reflecting dish, and can exchange the installation in different antenna reflecting dish combinations, effectively improved split reflection panel's reuse rate and use flexibility, given certain commonality.
In an optional embodiment, a protruding strip and a slot are respectively disposed on the connecting end surface of the adjacent split reflection panel, and the magnetic attraction member includes an anode strong magnet and a cathode strong magnet respectively adhered to the protruding strip and the slot side surface.
In an alternative embodiment, the anode ferromagnetic member and the cathode ferromagnetic member are both bar-shaped ferromagnetic members.
Through the form of the strip-shaped strong magnet, the disassembly and the assembly of the strong magnet on the connecting end surface of the split reflection panel are facilitated, especially under the working condition that the plug connectors and the magnetic suction pieces are of the same integral structure, the strip-shaped strong magnet can more easily process the plug-in connection part, and the assembly efficiency is improved.
In an optional implementation manner, the magnetic attraction piece is movably disposed in the plug connector, the plug connector includes a protruding strip and a slot which are respectively disposed adjacent to the hollow structure on the split reflection panel, and the magnetic attraction piece includes a strong magnet which is respectively disposed in the protruding strip and the internal cavity of the slot.
In an optional implementation manner, the ferromagnetic body is a columnar ferromagnetic body, and the columnar ferromagnetic body can freely rotate in the raised line and the cavity inside the slot, so that the heteropolarity of the ferromagnetic body is attracted.
The split reflection panel can be effectively locked automatically after being positioned and inserted through the freely rotating strong magnet.
In an optional embodiment, the magnetic member is made of a neodymium iron boron magnet, and the split reflective panel includes a bias-fed reflective panel and a positive-fed reflective panel.
The split reflection panel is combined with the plug connector and the magnetic suction piece which are arranged at the connecting part of the split reflection panel, so that the application range of the split antenna reflection disc can be effectively widened, the split reflection panel is not limited by specific shapes in the splicing process, and the practical application performance is enhanced.
In a second aspect, the present invention provides a satellite antenna comprising a split antenna reflector dish as described in any one of the preceding embodiments.
The satellite antenna can be assembled simply, and can be interchangeably installed on different satellite antennas through the split reflection panel which is detachably connected, so that the reuse rate is improved.
Additional features and advantages of the present application will be described in detail in the detailed description which follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a split antenna reflector provided in the present application;
FIG. 2 is a schematic view of the structure of the inserting member and the magnetic member in embodiment 1;
FIG. 3 is a schematic view of the structure of the inserting member and the magnetic member in embodiment 2;
FIG. 4 is a schematic view of the structure of the inserting member and the magnetic member in embodiment 3;
fig. 5 is a schematic structural diagram of a bias-fed six-split antenna reflector plate;
FIG. 6 is a schematic structural diagram of a reflection plate of a bias-fed four-lobe antenna;
fig. 7 is a schematic structural diagram of a positive feed octant antenna reflector dish.
Icon: 1-a reflector dish; 11-a split reflective panel;
2-plug connector; 21-convex strips; 22-slot; 23-a housing;
3-magnetic attraction pieces; 31-anodic strong magnet; 32-cathode strong magnet; 33-columnar ferromagnetic body.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
In the description of the present application, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when using, and are only used for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Referring to fig. 1, the split antenna reflector provided in the present invention includes: the split type reflection surface disc 1 is characterized in that the reflection surface disc 1 comprises a plurality of split reflection panels 11, and the adjacent split reflection panels 11 are detachably connected;
the connecting parts of the split reflection panels 11 are respectively provided with a plug connector 2 for positioning and a magnetic suction part 3 for locking, so that the split reflection panels 11 are connected into an integral structure.
The split reflecting plate is mainly applied to a portable satellite antenna, and the integral structure of the reflecting surface plate 1 can be formed by detachably splicing a plurality of split reflecting panels 11 together.
Through the plug connector 2 that is used for the location that sets up at split reflecting panel's 11 connection position, reliably improved and assembled efficiency to can lock between split reflecting panel 11 through magnetism subassembly 3, guarantee to assemble the structural strength of back whole reflecting surface dish 1.
The split reflection panel 11 of the present invention is made of carbon fiber and honeycomb material by hot pressing, the connector 2 and the magnetic element 3 can be connected or preset at the connection part between the split reflection panels 11 during the manufacturing process, the connector 2 and the magnetic element 3 have different forms, and the following description will be specifically provided in different embodiments.
Example 1
Referring to fig. 2, the plug connector 2 and the magnetic connector 3 in this embodiment are of an integral structure and are disposed on the connecting end surface of the split reflective panel 11.
Specifically, taking a pair of split reflective panels 11 disposed adjacently as an example, the magnetic element 3 includes an anode ferromagnetic member 31 and a cathode ferromagnetic member 32 disposed on the connecting end surfaces of the split reflective panels 11, respectively, and the plug element 2 includes a convex strip 21 and a concave groove formed on the anode ferromagnetic member 31 and the cathode ferromagnetic member 32, respectively.
The anode ferromagnetic body 31 and the cathode ferromagnetic body 32 are mounted in front of the connecting end face of the split reflection panel 11, and the connecting portions of the two ferromagnetic bodies are machined into the convex strips 21 and the slots 22 which are engaged with each other. In the manufacturing process of the split reflection panel 11 by hot pressing, the structured anode strong magnet 31 and the structured cathode strong magnet 32 are respectively arranged at the edges of the carbon fiber plates and are fixed on the connecting end surfaces of the split reflection panel 11, so that the convex strips 21 and the slots 22 can be opposite to each other, and positioning, mounting, locking and fixing can be simultaneously carried out.
Through the plug connector 2 and the magnetic attraction piece 3 in the embodiment, the installation efficiency of the antenna reflection disc can be improved to the maximum extent, and meanwhile, the installation rapidity and the connection stability are guaranteed.
Example 2
Referring to fig. 3, the plug connector 2 and the magnetic element 3 in this embodiment are separate structures disposed on the connection end surface of the split reflective panel 11, and the magnetic element 3 is adhered to the plug connector 2, specifically, to the outer side of the plug connector 2.
Specifically, taking a pair of split reflective panels 11 disposed adjacent to each other as an example, the connector 2 includes a protruding strip 21 and a slot 22 respectively disposed on the connecting end surfaces of the split reflective panels 11, and both the protruding strip 21 and the slot 22 are of a non-metal structure that does not affect the antenna receiving function, preferably, a polyvinyl chloride plate.
The magnetic part 3 comprises an anode strong magnet 31 and a cathode strong magnet 32 which are respectively adhered on the outer side surfaces of the convex strip 21 and the slot 22, the convex strip 21 and the slot 22 are formed by machining and molding a polyvinyl chloride plate, and the anode strong magnet 31 and the cathode strong magnet 32 are further respectively adhered on the outer side surfaces of the convex strip 21 and the slot 22, so that the butt joint installation convenience of the split reflection panel 11 can be effectively improved on the premise of ensuring the normal function of the antenna reflection disc.
In addition, through with magnetism piece 3 and plug connector 2 fixed connection on split reflection panel 11, can realize the used repeatedly of same split reflection panel 11 on different antenna reflecting discs, for example produce split reflection panel 11 for the standard panel of batch time, set up the strong magnet of the same polarity or different polarity on two connection terminal surfaces of every split reflection panel 11, conveniently assemble on the scene, can exchange the installation in different antenna reflecting disc combinations simultaneously, greatly made things convenient for portable satellite antenna's fast assembly.
In addition, in the present embodiment and embodiment 1, the anode ferromagnetic body 31 and the cathode ferromagnetic body 32 are both strip-shaped ferromagnetic bodies, which can facilitate the mechanical processing of the structural shape thereof, and can ensure the bonding area of the heteropolar magnet, thereby improving the locking effect.
Example 3
Referring to fig. 4, the plug connector 2 and the magnetic element 3 in the embodiment are both separate structures, but different from the structure in embodiment 2, the plug connector 2 in the embodiment fits closely, and the magnetic element 3 is movably disposed in the plug connector 2 and can attract each other by the opposite poles of the plug connector 2.
Specifically, take a pair of split reflecting panel 11 that sets up adjacently as an example, plug connector 2 includes sand grip 21 and slot 22 of setting respectively on split reflecting panel 11 connection end face, and sand grip 21 and slot 22 are specifically for having the hollow structure of casing 23, can carry out the joint through the appearance is mutually supported, have the certain activity space of magnetism piece 3 of inhaling in the inside of its casing 23, can guarantee that the heteropolar magnet attracts mutually.
The ferromagnetic body comprises a columnar ferromagnetic body 33 respectively arranged in the raised strip 21 and the slot 22, and the columnar ferromagnetic body 33 can freely rotate in the inner cavities of the raised strip 21 and the slot 22 so as to enable the columnar ferromagnetic body 33 to be adsorbed at different poles at intervals of the side walls of the raised strip 21 and the slot 22.
The embedded part is a freely rotating cylindrical strong magnet 33, so that N, S polarities do not need to be distinguished specially, and the embedded part can be arranged in any direction.
The magnetic attraction piece 3 of the invention is made of neodymium iron boron magnet with the chemical formula of Nd2Fe14B is an artificial permanent magnet having the strongest magnetic force so far. The split reflection panel 11 can be effectively locked through the neodymium iron boron magnet, and the overall structural strength of the antenna reflection disc after connection is guaranteed.
The magnetic element 3 and the plug element 2 can be applied to various types of reflector antennas, such as the offset-fed or feed-forward antenna reflector dish in fig. 5-7.
Besides the shown offset feed six-split, offset feed four-split and forward feed eight-split antenna reflecting discs, the invention can also be applied to forward feed and offset feed antenna reflecting discs with other numbers of lobes, and is not described again here.
By reasonably decomposing the antenna surface, the interface is a normal set of the inner surface of the circular focus parabolic antenna. The mold simplification, interchangeability, arbitrariness and universality of the side flaps are ensured. When all the side lobes are completely spliced, the fan-shaped curved surfaces and the curves form an integrally symmetrical paraboloid and a circle under the mutual attraction of the magnets, and curved surface tension is formed on the inner surface, the outer surface and the outer circle of the paraboloid antenna.
The invention also provides a satellite antenna comprising the split antenna reflecting disc, the assembly of the satellite antenna can be simplified, the interchangeable installation on different satellite antennas can be realized through the split reflecting panel 11 which is detachably connected, and the reuse rate is improved.
It should be noted that the features of the embodiments in the present application may be combined with each other without conflict.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A split antenna reflector dish, comprising: the split-type spliced reflecting surface disc comprises a plurality of split reflecting panels, and the adjacent split reflecting panels are detachably connected;
the split reflection panel is characterized in that the connecting parts of the split reflection panels are respectively provided with a plug connector for positioning and a magnetic part for locking, so that the split reflection panels are connected into an integral structure.
2. The split antenna reflector dish of claim 1, wherein the connector and the magnetic element are integrally formed, and the magnetic element and the connector are disposed on the connecting end surface of the split reflector panel.
3. The split antenna reflector of claim 2, wherein the magnetic element comprises a strong anode magnet and a strong cathode magnet respectively disposed adjacent to the split reflector panel, and the plug element comprises a protruding strip and a slot respectively disposed on the strong anode magnet and the strong cathode magnet and capable of engaging with each other.
4. The split antenna reflector dish of claim 1, wherein the connector and the magnetic element are separate pieces, and the magnetic element is adhered to the connector.
5. The split antenna reflector as claimed in claim 4, wherein the connecting end surfaces of the adjacent split reflecting panels are respectively provided with a protruding strip and a slot, and the magnetic attraction member comprises an anode strong magnet and a cathode strong magnet respectively adhered to the side surfaces of the protruding strip and the slot.
6. The split antenna reflector dish of claim 3 or 5, wherein the anode ferromagnetic body and the cathode ferromagnetic body are both bar-shaped ferromagnetic bodies.
7. The split antenna reflector of claim 1, wherein the magnetic element is movably disposed in the connector, the connector comprises a protrusion and a slot respectively disposed adjacent to the hollow structure of the split reflector, and the magnetic element comprises a strong magnet respectively disposed in the protrusion and the inner cavity of the slot.
8. The split antenna reflector as claimed in claim 7, wherein the ferromagnetic member is a cylindrical ferromagnetic member, and the cylindrical ferromagnetic member can freely rotate in the protruding strip and the cavity inside the slot.
9. The reflector dish of claim 1, wherein the magnetic element is made of neodymium-iron-boron magnet, and the split reflector panel comprises a bias-fed reflector panel and a positive-fed reflector panel.
10. A satellite antenna comprising the split antenna dish of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111208977.9A CN113922100A (en) | 2021-10-18 | 2021-10-18 | Split type antenna reflecting disc and satellite antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111208977.9A CN113922100A (en) | 2021-10-18 | 2021-10-18 | Split type antenna reflecting disc and satellite antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113922100A true CN113922100A (en) | 2022-01-11 |
Family
ID=79241191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111208977.9A Pending CN113922100A (en) | 2021-10-18 | 2021-10-18 | Split type antenna reflecting disc and satellite antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113922100A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103816674A (en) * | 2014-03-17 | 2014-05-28 | 魏正鹏 | Multi-face magnetic attraction building block structure |
| CN205159517U (en) * | 2015-12-04 | 2016-04-13 | 南京中网卫星通信股份有限公司 | Assemble hidden locking device of carbon fiber parabolic antenna |
| EP3089176A1 (en) * | 2016-03-04 | 2016-11-02 | Premo, S.L. | Elongated flexible inductor and elongated flexible low frequency antenna |
| CN110957977A (en) * | 2019-11-06 | 2020-04-03 | 佛山综合能源有限公司 | Novel photovoltaic module of connection is inhaled to magnetism |
| CN213217557U (en) * | 2020-04-16 | 2021-05-18 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | Split guide plate for spinal surgery |
| CN112826178A (en) * | 2017-12-07 | 2021-05-25 | 明门瑞士股份有限公司 | Magnetic fastener and female fastener |
-
2021
- 2021-10-18 CN CN202111208977.9A patent/CN113922100A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103816674A (en) * | 2014-03-17 | 2014-05-28 | 魏正鹏 | Multi-face magnetic attraction building block structure |
| CN205159517U (en) * | 2015-12-04 | 2016-04-13 | 南京中网卫星通信股份有限公司 | Assemble hidden locking device of carbon fiber parabolic antenna |
| EP3089176A1 (en) * | 2016-03-04 | 2016-11-02 | Premo, S.L. | Elongated flexible inductor and elongated flexible low frequency antenna |
| CN112826178A (en) * | 2017-12-07 | 2021-05-25 | 明门瑞士股份有限公司 | Magnetic fastener and female fastener |
| CN110957977A (en) * | 2019-11-06 | 2020-04-03 | 佛山综合能源有限公司 | Novel photovoltaic module of connection is inhaled to magnetism |
| CN213217557U (en) * | 2020-04-16 | 2021-05-18 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | Split guide plate for spinal surgery |
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Application publication date: 20220111 |