CN113644419A - Spring rubber-coated antenna and production method thereof - Google Patents
Spring rubber-coated antenna and production method thereof Download PDFInfo
- Publication number
- CN113644419A CN113644419A CN202111206831.0A CN202111206831A CN113644419A CN 113644419 A CN113644419 A CN 113644419A CN 202111206831 A CN202111206831 A CN 202111206831A CN 113644419 A CN113644419 A CN 113644419A
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- antenna
- spring
- plastic shell
- encapsulated
- plastic
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- 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
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/06—Details
Abstract
The invention discloses a spring encapsulated antenna and a production method thereof, wherein the spring encapsulated antenna comprises a spring antenna, a plastic shell and a PCB (printed circuit board), the spring antenna is embedded in the plastic shell, one end of the spring antenna extends out of the plastic shell to form a feed end, and a positioning column is fixedly connected to the plastic shell; the PCB board is provided with a positioning hole used for being matched with the positioning column, and the PCB board is further provided with a feed bonding pad used for being connected with the feed end. The spring antenna forms the antenna module with the casing of moulding plastics through moulding plastics to be provided with on the casing of moulding plastics with the reference column of PCB board location installation, make the assembly simple quick, improve the accuracy nature of assembly, the antenna module of the production of moulding plastics can be adjusted into the spring antenna of different suitable frequencies according to actual conditions in addition, thereby improves the commonality of antenna installation, reduces the research and development cost.
Description
Technical Field
The invention relates to the technical field of antenna devices, in particular to a spring rubber-coated antenna and a production method thereof.
Background
At present, traditional antenna adopts single spring antenna structure usually, through the handheld flatiron of manual work on welding the mainboard feed, perhaps adopts the structure that five metals shell fragment passes through plastic leg joint, then with the shell fragment hot melt to the support on, mainboard feed position is assembled to the repacking, the mode assembly through the contact of thimble at last.
However, the antenna adopts a single spring antenna structure, the manual handheld soldering iron is low in soldering efficiency, the spring antenna cannot be accurately positioned, and the deviation is large; the antenna adopts the structure that five metals shell fragment passes through plastic leg joint, and antenna space occupies great, is not suitable for to the model that the space is restricted.
Therefore, it is necessary to provide a spring-encapsulated antenna and a method for manufacturing the same to solve the above technical problems.
Disclosure of Invention
The invention mainly aims to provide a spring encapsulated antenna and a production method thereof, and aims to improve the accuracy and the universality of antenna assembly.
In order to achieve the purpose, the spring encapsulated antenna provided by the invention comprises a spring antenna, a plastic shell and a PCB (printed circuit board), wherein the spring antenna is embedded in the plastic shell, one end of the spring antenna extends out of the plastic shell to form a feeding end, a positioning column is fixedly connected to the plastic shell, and one end of the positioning column, which is far away from the plastic shell, is provided with a round angle; the PCB board is provided with a positioning hole used for being matched with the positioning column, the PCB board is provided with a guide inclined plane communicated with the positioning hole, and the PCB board is further provided with a feed bonding pad used for being connected with the feed end.
Optionally, the length of the positioning column is 0.79 mm-0.81 mm.
Optionally, the diameter of the spring antenna is 0.95 mm-1.05 mm.
Optionally, the length of the spring antenna is 1/4 wavelengths of the desired frequency.
Optionally, the feeding end extends out of the side surface of the plastic casing, and the feeding end is disposed near one end of the positioning column.
The invention also discloses a production method of the spring encapsulated antenna, which comprises the following steps:
s100: preparing an antenna and a PCB board with a feed pad;
s200: forming a plastic shell on the outer layer of the antenna by in-mold injection molding, wherein one end of the antenna extends out of the plastic shell to form a feed end, and the antenna and the plastic shell form an antenna module;
s300: mounting and fixing the antenna module and the PCB by a chip mounter;
s400: and fixing the feeding end and the feeding pad through reflow soldering.
Optionally, the antenna is a spring antenna.
Optionally, the plastic shell is made of PA66 plastic mixed with 30% glass fiber.
According to the technical scheme, the spring antenna is formed into the antenna module with the injection molding shell through injection molding, the positioning columns which are positioned and installed with the PCB are arranged on the injection molding shell, so that the assembly is simple and rapid, and the injection molded antenna module can be adjusted into spring antennas with different applicable frequencies according to actual conditions, so that the universality of antenna installation is improved, and the research and development cost is reduced; the antenna module arranged in this way has the advantages of small volume, light weight and the like, and can be suitable for installation positions with narrow corresponding spaces.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a spring-encapsulated antenna according to an embodiment of the present invention;
fig. 2 is an exploded view of the structure of a spring-encapsulated antenna in an embodiment of the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 3;
FIG. 4 is an enlarged view of portion B of FIG. 3;
FIG. 5 is a flow chart of a production process in an embodiment of the present invention.
The reference numbers illustrate:
1. a spring antenna; 11. a feed end; 2. a plastic shell; 21. a positioning column; 22. round corners; 3. a PCB board; 31. a feeding pad; 32. positioning holes; 33. a guide slope.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. 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 all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a spring rubber-coated antenna and a production method thereof, aiming at improving the accuracy and the universality of antenna assembly.
Referring to fig. 1 to 4, the spring encapsulated antenna disclosed by the invention comprises a spring antenna 1, a plastic housing 2 and a PCB 3, wherein the spring antenna 1 is embedded in the plastic housing 2, one end of the spring antenna 1 extends out of the plastic housing 2 to form a feed end 11, the plastic housing 2 is fixedly connected with a positioning column 21, and one end of the positioning column 21, which is far away from the plastic housing 2, is provided with a round corner 22; the PCB 3 is provided with a positioning hole 32 used for being matched with the positioning column 21, the PCB 3 is provided with a guide inclined plane 33 communicated with the positioning hole 32, and the PCB 3 is further provided with a feed pad 31 used for being connected with the feed end 11.
In this embodiment, the spring antenna 1 is formed by bending, specifically, the spring antenna 1 plated with nickel may be selected, the spring antenna 1 plated with gold may be selected, or the spring antenna 1 made of copper may be adopted, and the frequency required for installing the length of the spring antenna 1 is specifically required to be selected, the commonly used frequencies of the spring antenna 1 are 315MHz, 490MHz, 868MHz and 915MHz, and the length of the antenna is manufactured by installing 1/4 wavelengths of the selected frequency. The plastic housing 2 is formed by injection molding particles, and the positioning column 21 is formed by mixing PA66 plastic and 30% glass fiber. In other embodiments, the injection-molded particles can be made of PPA plastic and 30% glass fiber material. The PCB board is provided with a feeding pad 31 and a positioning hole 32 matching with the positioning post 21.
Specifically, spring antenna 1 inlays to be established in plastic casing 2, and through moulding plastics and plastic casing 2 integrated into one piece, the locating column 21 that sets up on the casing of moulding plastics matches the location with locating hole 32 on the PCB board 3. The number of the positioning holes 32 and the positioning posts 21 is not limited, and for convenience of installation, the number of the positioning holes 32 is two, and the number of the corresponding positioning posts 21 is also two. While the feeding terminal 11 on the PCB board is connected to the feeding pad 31. The spring rubber-coated antenna has the advantages of simple structure, small volume and convenience in installation.
In specific implementation, the spring antenna 1 is molded to form an antenna module with an injection molding shell, and the injection molding shell is provided with the positioning column 21 which is positioned and installed with the PCB 3, so that the assembly is simple and rapid, and the antenna module produced by injection molding can be adjusted to be the spring antenna 1 with different applicable frequencies according to actual conditions, thereby improving the universality of the installation of the spring encapsulated antenna and reducing the research and development cost; the antenna module arranged in this way has the advantages of small volume, light weight and the like, and can be suitable for installation positions with narrow corresponding spaces.
In this embodiment, the positioning post 21 is provided with a round corner 22, which has guiding and guiding effects, so that the positioning post 21 can be easily inserted into the positioning hole 32 after the round corner 22 contacts the positioning hole 32 during installation.
In this embodiment, the guide inclined plane 33 is formed on the PCB 3 to facilitate the positioning post 21 to be matched with the positioning hole 32, and has an effect of guiding the positioning post 21 to be matched with the positioning hole 32.
Furthermore, the length of the positioning column 21 is 0.79 mm-0.81 mm. In the present embodiment, the positioning hole 32 is a through hole, and the length of the positioning column 21 is slightly smaller than the depth of the positioning hole 32. So that the plastic housing 2 and the PCB board 3 can be in close contact.
Further, the diameter of the spring antenna 1 is 0.95 mm-1.05 mm. In this embodiment, the diameter of the spring antenna 1 is controlled to be between 0.95mm and 1.05mm, so that the bending processing is facilitated, and meanwhile, the diameter is relatively small, so that the total weight of the spring antenna 1 is reduced, the spring encapsulated antenna has the advantages of small size, light weight and the like, and the spring encapsulated antenna can also be suitable for the installation position with a narrow corresponding space.
Further, the length of the spring antenna 1 is 1/4 wavelengths of the desired frequency. In this embodiment, when the length of the spring antenna 1 is set to 1/4 wavelengths of the required frequency, the performance of the spring-encapsulated antenna is better, so that the spring antenna 1 has a better standing-wave ratio.
Furthermore, the feeding end 11 extends out of the side surface of the plastic housing 2, and the feeding end 11 is disposed near one end of the positioning column 21. In the present embodiment, when the feeding terminal 11 is disposed near the side of the positioning pillar 21, the feeding terminal 11 is conveniently connected to the feeding pad 31.
Referring to fig. 5, the method for producing a spring-encapsulated antenna provided by the invention comprises the following steps:
s100: preparing an antenna and a PCB board with a feed pad;
s200: forming a plastic shell on the outer layer of the antenna by in-mold injection molding, wherein one end of the antenna extends out of the plastic shell to form a feed end, and the antenna and the plastic shell form an antenna module;
s300: mounting and fixing the antenna module and the PCB by a chip mounter;
s400: and fixing the feeding end and the feeding pad through reflow soldering.
In the present embodiment, for step S100, an antenna and a PCB board with a feeding pad are prepared.
In step S200, the antenna is placed in a mold for injection molding, and then plastic particles are injected to perform injection molding in the mold. Specifically, after the spring antenna is placed, injection molding is performed through injection molding particles, the injection molding particles form an injection molding shell, the spring antenna is embedded in the injection molding shell, and one end of the spring antenna extends out of the injection molding shell to form a feed end. When setting up like this, can realize standard modularization according to WIFI, BT antenna, can select the antenna module of corresponding matching size performance to different model environment, reduce research and development debugging input to it has advantages such as small to set up like this, light in weight. And meanwhile, a positioning column is formed on the injection molding shell to be subjected to injection molding and is used for being matched and positioned with a positioning hole in the PCB, so that modularization is formed, the installation efficiency is improved, the productivity is improved, and the manual operation cost is reduced.
Aiming at the step S300, the manufactured and molded antenna module is usually placed on a transmission carrier tape for transportation, the antenna module on the transmission carrier tape is taken out by a chip mounter and then assembled with a PCB, and specifically, a positioning column on the antenna module is matched with a positioning hole on the PCB for installation, so that the convenience of block installation is improved, the 3D three-dimensional layout positioning is realized, and the performance of the antenna is enhanced. And meanwhile, a spring antenna on the antenna module is connected with the feed bonding pad, and the antenna module and the PCB are pasted by a chip mounter, so that the PCB and the antenna module are fixed firmly.
And step S400, after the antenna module and the PCB are fixedly mounted, the feed end and the welding disc are fixed through the reflow oven, and the performance of the antenna is improved.
By the method, the spring antenna is formed into the antenna module with the injection molding shell through injection molding, the positioning column which is positioned and installed with the PCB is arranged on the antenna module, so that the assembly is simple and rapid, and the antenna module produced through injection molding can be adjusted into spring antennas with different applicable frequencies according to actual conditions, so that the universality of antenna installation is improved, and the research and development cost is reduced; the antenna module arranged in this way has the advantages of small volume, light weight and the like, and can be suitable for installation positions with narrow corresponding spaces. Meanwhile, automatic processing is completed through the surface mounting device and carrier tape transmission, and the manual operation cost is favorably reduced.
Further, the antenna is a spring antenna.
In this embodiment, when the antenna adopts the spring antenna, the cost of the spring antenna is lower than that of other antennas, and the spring antenna has a small size, is easy to install, has good standing-wave ratio performance, and has good anti-vibration and anti-aging capabilities.
Furthermore, the plastic shell is made by mixing PA66 plastic and 30% glass fiber. In other embodiments, the plastic housing may be made of PPA plastic and 30% fiberglass. Specifically, the mixed material formed by adding 30% of glass fiber into the PA66 plastic raw material has the advantages of high strength, special thermal stability and hydrolysis resistance. The mixed material formed by PPA plastic and 30% glass fiber also has the advantages of high strength, special thermal stability and hydrolysis resistance.
In another embodiment, an optical automatic detector for detecting the mounted spring-encapsulated antenna can be further arranged between the chip mounter and the reflow oven, and is used for detecting the performance of the spring-encapsulated antenna.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. A spring-encapsulated antenna, comprising:
a spring antenna;
the spring antenna is embedded in the plastic shell, one end of the spring antenna extends out of the plastic shell to form a feed end, a positioning column is fixedly connected to the plastic shell, and one end of the positioning column, which is far away from the plastic shell, is provided with a round corner;
the PCB board is provided with a positioning hole used for being matched with the positioning column, a guide inclined plane communicated with the positioning hole is formed in the PCB board, and the PCB board is further provided with a feed bonding pad used for being connected with the feed end.
2. The spring-encapsulated antenna as recited in claim 1, wherein the length of the positioning post is 0.79mm to 0.81 mm.
3. The spring-encapsulated antenna of claim 1, wherein the spring antenna has a diameter of 0.95mm to 1.05 mm.
4. The spring-encapsulated antenna of claim 1, wherein the length of said spring-encapsulated antenna is 1/4 wavelengths of a desired frequency.
5. The spring-encapsulated antenna of claim 1, wherein said feed end extends from a side of said plastic housing, said feed end being disposed proximate an end of said positioning post.
6. A production method of a spring encapsulated antenna is characterized by comprising the following steps:
s100: preparing an antenna and a PCB board with a feed pad;
s200: forming a plastic shell on the outer layer of the antenna by in-mold injection molding, wherein one end of the antenna extends out of the plastic shell to form a feed end, and the antenna and the plastic shell form an antenna module;
s300: mounting and fixing the antenna module and the PCB by a chip mounter;
s400: and fixing the feeding end and the feeding pad through reflow soldering.
7. The method of claim 6, wherein the antenna is a spring-loaded antenna.
8. The method of claim 6, wherein the plastic housing is made of PA66 plastic mixed with 30% glass fiber.
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CN202111206831.0A CN113644419B (en) | 2021-10-18 | 2021-10-18 | Production method of spring rubber-coated antenna |
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CN202111206831.0A CN113644419B (en) | 2021-10-18 | 2021-10-18 | Production method of spring rubber-coated antenna |
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CN113644419B CN113644419B (en) | 2022-01-21 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115966880A (en) * | 2023-03-16 | 2023-04-14 | 瑞纳智能设备股份有限公司 | Temperature control panel with built-in antenna |
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