CN113823908A - Low-cost 5G radome and its sealing method and preparation method - Google Patents
Low-cost 5G radome and its sealing method and preparation methodDownload PDFInfo
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- CN113823908A CN113823908ACN202110545629.4ACN202110545629ACN113823908ACN 113823908 ACN113823908 ACN 113823908ACN 202110545629 ACN202110545629 ACN 202110545629ACN 113823908 ACN113823908 ACN 113823908A
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- shaped nut
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
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Abstract
Translated fromChinese
Description
Technical Field
The invention relates to the field of communication, in particular to an antenna housing.
Background
At present, the construction of the world mobile network communication enters a new stage, and the arrangement and installation of the communication base station as an important component of the communication network are basic guarantees for realizing the 5G communication. The antenna housing is used as one of parts of a communication base station, plays a role in supporting and protecting core parts such as an antenna and the like, and the common antenna housing at present is integrally formed by using engineering plastics such as PC (polycarbonate), ABS (acrylonitrile butadiene styrene) and the like in a mode of injection molding and the like, so that the weight is large, and difficulty is caused in installation of the antenna housing, especially in certain special environments. With the application of the composite material, the material selection of the antenna housing is more flexible in the design process due to the designability of the composite material, so that the effects of reducing weight and facilitating installation are achieved.
According to the designability of the composite material, the wave-transmitting performance and the assembling performance of the antenna housing can be optimized, the antenna housing is designed into a wave-transmitting panel and a housing body, the wave-transmitting panel and the housing body are respectively molded, and then the two components are connected together. Traditional connected mode for example punches and connects, bonds etc. can lead to the fact harmful effects to the antenna house outward appearance, and the operation of punching can lead to the fact the not damage of the different degrees of wave-transparent panel, influences the holistic gas tightness of antenna house, and the operation of punching still can make the assembling process of whole antenna house more complicated in addition, and above these factors all can lead to the fact harmful effects to product appearance, product quality, cost, production efficiency to 5G antenna equipment convenient laying and installation have been restricted.
Disclosure of Invention
The invention aims to provide a low-cost 5G antenna housing sealing method to solve the technical problem.
The invention also aims to provide a low-cost 5G antenna housing which is sealed by adopting the sealing method.
The invention also aims to provide a preparation method of the low-cost 5G radome, which is used for preparing the low-cost 5G radome.
The technical problem solved by the invention can be realized by adopting the following technical scheme:
the low-cost 5G radome sealing method is characterized in that a special-shaped nut is pre-embedded in a wave-transmitting panel of a radome, a hole is formed in the position, corresponding to the special-shaped nut, of a radome body, and the wave-transmitting panel and the radome body are connected together in a mode that a screw penetrates through the hole to be connected with the special-shaped nut.
Has the advantages that: 1. the punching operation is not needed after the wave-transparent panel is formed, and the damage to the wave-transparent panel caused by the punching operation can be effectively reduced. 2. Compared with a bonding mode, the connection process is more convenient, and the connection effect is better. 3. The method provided by the invention has the advantages that the appearance and the internal structure of the wave-transparent panel are not damaged, the rate of finished products is high, the appearance of the product is smoother, the service life is longer, the signal stability is higher, meanwhile, the punching and gluing are not needed, and the assembly of the antenna housing is simplified.
Preferably, the special-shaped nut may be one of an oval shape, a square shape, a circular shape, a polygonal shape, or other irregular shapes.
Preferably, the wave-transparent panel is prepared by adopting a die pressing process. The wave-transmitting panel is prepared by adopting a mould pressing process, so that the wave-transmitting performance and the mechanical performance of the wave-transmitting panel are ensured, the special-shaped nut is more convenient to embed, and the production cost is lower.
Preferably, the wave-transmitting panel is of a skin sandwich structure and sequentially comprises an upper skin, a middle layer and a lower skin from top to bottom, the top end of the special-shaped nut props against the upper skin, the tail end of the special-shaped nut penetrates through the middle layer and the lower skin, and the port is flush with the outermost side of the lower skin or extends out of the outermost side of the lower skin. Thereby, the structure is firmer, and the smoothness of the outer side wall of the wave-transmitting panel is ensured.
Low-cost 5G antenna house, including passing ripples panel, the cover body, its characterized in that, pass and have buried special-shaped nut underground in the ripples panel, the position department trompil that the cover body corresponds with special-shaped nut passes the mode that special-shaped nut was connected to the trompil through the screw, will pass ripples panel and cover body link together.
Preferably, the wave-transmitting panel is of a skin sandwich structure and sequentially comprises an upper skin, a middle layer and a lower skin from top to bottom, the top end of the special-shaped nut props against the upper skin, the tail end of the special-shaped nut penetrates through the middle layer and the lower skin, and a port extends out of the outermost side of the lower skin and then enters the opening of the cover body. Thereby, the structure is firmer, and the smoothness of the outer side wall of the wave-transmitting panel is ensured.
The low-cost 5G antenna house still includes the base, be equipped with the opening on the base, the screw passes and inserts in the dysmorphism nut behind the opening on the base, the trompil on the cover body. Thereby connecting the wave-transmitting panel, the cover body and the base together.
The preparation method of the low-cost 5G antenna housing comprises the following steps: step one, manufacturing a wave-transparent panel and a cover body; step two, connecting the wave-transparent panel and the cover body together; it is characterized in that the preparation method is characterized in that,
in the first step, the manufacturing steps of the wave-transparent panel are as follows:
step (1), sequentially putting a raw material for manufacturing an upper skin, a special-shaped nut, a raw material for manufacturing an intermediate layer and a raw material for manufacturing a lower skin into a die;
step (2), closing the mould, heating and pressurizing;
step (3), cooling the mold and then demolding to obtain a wave-transmitting panel blank;
step (4), machining and spraying protective paint on the wave-transmitting panel blank to ensure that the panel is deburred, and the surface is smooth and clean to obtain a wave-transmitting panel;
a special-shaped nut is embedded in the wave-transparent panel obtained in the first step, and a hole is formed in the position, corresponding to the special-shaped nut, of the cover body obtained in the first step;
in the second step, the wave-transmitting panel and the cover body are connected together in a mode that a screw penetrates through the opening hole to be connected with the special-shaped nut.
Drawings
FIG. 1 is an exploded view of the structure of a wave-transparent panel;
fig. 2 is an exploded view of one configuration of a radome.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific drawings.
Referring to fig. 1 and 2, a method for sealing a low-cost 5G radome
According to the invention, the special-shapednut 2 is pre-embedded in the wave-transmitting panel 6 of the radome, a hole is formed in the position of theradome body 8 of the radome corresponding to the special-shapednut 2, the special-shapednut 2 is connected by ascrew 10 penetrating through the hole on the bottom plate 9, the wave-transmitting panel 6 and theradome body 8 are connected together, and thesealing ring 7 is embedded in theradome body 8. The invention replaces the existing sealing mode of punching and sticking by the mode of embedding the special-shaped nut.
Preferably, the wave-transparent panel 6 is prepared by adopting a die pressing process. The wave-transmitting panel 6 is prepared by adopting a mould pressing process, so that the wave-transmitting performance and the mechanical performance are ensured, the special-shapednut 2 is more conveniently arranged in the wave-transmitting panel, and the production cost is lower.
The special-shapednut 2 can be one of an oval shape, a square shape, a round shape, a polygonal shape or other irregular shapes. The wave-transmitting panel 6 is preferably of a skin sandwich structure and sequentially comprises anupper skin 1, a middle layer and alower skin 5 from top to bottom, the middle layer is composed of a core layer 4 and aseal edge 3 surrounding the core layer 4, the top end of the special-shapednut 2 props against theupper skin 1, the tail end of the special-shaped nut penetrates through theseal edge 3, and a port is flush with the outermost side of thelower skin 5 or extends out of the outermost side of thelower skin 5. The invention limits the top end position of the special-shapednut 2 to be positioned between theupper skin 1 and the middle layer, so that the structure is firmer and the smoothness of the outer side wall of the wave-transmitting panel 6 is ensured. Preferably, the top end of theprofile nut 2 is a sealed top end. Therefore, the mountingscrew 10 is prevented from being pressed against theupper skin 1 after penetrating through the special-shapednut 2, and theupper skin 1 is prevented from being deformed. Preferably, the top end of the special-shapednut 2 is provided with an outward flange. The contact area between the special-shapednut 2 and theupper skin 1 and the sealingedge 3 is increased through the flanging, so that the special-shapednut 2 is prevented from being separated, and meanwhile, the special-shapednut 2 is favorably placed in the process of a die, the process of placing other raw materials and the process of hot press forming, and the stability of the special-shapednut 2 is kept. The flanging is preferably provided with at least four first strip-shaped grooves extending along the radial direction, and the first strip-shaped grooves are arranged at equal included angles and form a ring shape by taking the central axis of the special-shapednut 2 as the center. The setting of bar recess can effectively avoid the relative rotation between special-shapednut 2 and wave-transparent panel 6, and then slows down the condition that the clearance appears between the two. The two sides of the turned edge are both provided with strip-shaped grooves, and one side of the turned edge is only provided with the strip-shaped grooves. Preferably, however, the first strip-shaped groove is provided only on the side of the cuff close to the intermediate layer, and the surface of the cuff close to the side of theupper skin 1 is smooth. Therefore, on one hand, the middle layer material is easier to deform and fill the first strip-shaped groove in the hot pressing process, and on the other hand, theupper skin 2 can be prevented from wrinkling in the hot pressing process, so that the outer surface of the wave-transmitting panel 6 is smoother and more complete. And a second strip-shaped groove extending along the axial direction is preferably arranged on the inner side wall of the special-shapednut 2. The inner side wall of the special-shaped nut 2 is also provided with threads, and the second strip-shaped groove penetrates through the threads. The second strip-shaped groove can lead out gas in the special-shaped nut 2 in the process of inserting thescrew 10, so that the insertion of thescrew 10 is smoother and labor-saving. In this case, it is preferable that the second strip groove has one groove. The inner side wall of the special-shapednut 2 can also be unthreaded, at least two second strip-shaped grooves are preferably arranged at equal intervals, and the strip-shaped grooves are encircled into a ring shape by taking the central axis of the special-shapednut 2 as the center. The second strip-shaped groove is connected with the rubber connecting piece in a clamping mode. The rubber connecting piece is preferably cylindrical. The internal diameter of rubber connecting piece is crescent to the end from the top, be equipped with the internal thread on the inside wall of rubber connecting piece, the lateral wall is equipped with the bar arch in the position of the correspondence of second bar groove, the protruding card of bar is gone into in the second bar groove, the top of rubber connecting piece is decided on the inside wall on the top of special-shapednut 2. Therefore, the inner diameter of the rubber part is changed to adapt to thescrews 10 with different sizes, and the requirement on the size of thescrews 10 is reduced. Meanwhile, the rubber piece can slow down the hard contact between thescrew 10 and the special-shapednut 2, and the situation that thescrew 10 is rusted and cannot be screwed out is avoided.
Low-cost 5G antenna housing
Low-cost 5G antenna house, including passing through ripples panel 6, thecover body 8, in the sealingwasher 7 embeddingcover body 8, pass through and bury special-shapednut 2 in theripples panel 5, thecover body 8 is at the position department trompil that special-shapednut 2 corresponds, passes the trompil on the bottom plate 9 throughscrew 10, will pass through ripples panel 6 and coverbody 8 and link together. The low-cost 5G antenna house can also include base 9, be equipped with the opening on the base 9, screw 10 inserts in special-shapednut 2 after passing opening on base 9, the trompil on thecover body 8. Thereby connecting the wave-transparent panel 6, thecover 8 and the base 9 together.
The shapednut 2 is preferably a hexagonal nut such that the hexagonal shape of the hexagonal nut is used to limit relative rotation between theshaped nut 2 and the wave-transparent panel 6. The special-shaped nuts preferably have 8, 4 of which are respectively located at four corners of the wave-transparent panel 5, and the remaining 4 of which are respectively located at the centers of four sides of the wave-transparent panel 5. The invention limits the position of the top end of the special-shaped nut, so that the connection between the wave-transmitting panel 6 and thecover body 8 is firmer. The wave-transmitting panel 6 can be of a skin sandwich structure and sequentially comprises anupper skin 1, a middle layer and alower skin 5 from top to bottom, the top end of the special-shapedscrew 2 props against theupper skin 1, the tail end of the special-shaped screw penetrates through the sealingedge 3, and a port of the special-shaped screw extends out of the outermost side of thelower skin 5 and then enters the opening of thecover body 8. Thereby, the structure is firmer, and simultaneously, the smoothness of the outer side wall of the wave-transparent panel 5 is ensured. The opening of thecover 8 is preferably divided into upper and lower portions, and the inner diameter of the upper portion is larger than that of the lower portion. So that the profile nut is accommodated with the larger inner diameter located above. The gap between thecover 8 and the base 9 is reduced by a smaller inner diameter at the bottom. Thecover body 8 is preferably square annular, the upper end face and the lower end face of thecover body 8 are preferably provided with annular grooves, annular sealing rings are arranged in the annular grooves, and the opening is preferably located on the outer sides of the annular grooves. Thereby, the connection between the cover body 6 and the wave-transmittingpanel 5 and the bottom plate is more closed by the seal ring. The base 9 is preferably plate-shaped. The opening in the base 9 is preferably divided into upper and lower portions, the upper portion having a smaller inner diameter than the lower portion. Thereby accommodating the head ofscrew 10 with a larger inner diameter at the bottom. Avoiding the head of thescrew 10 from leaking out. The portion of the opening with the larger inner diameter has a height value not lower than the height value of the head of thescrew 10. An end cap may be provided at the opening in the base 9 to close the opening after thescrew 10 is installed.
Preparation method of low-cost 5G antenna housing
The preparation method of the low-cost 5G antenna housing comprises the following steps: firstly, manufacturing a wave-transparent panel 5 and acover body 8; and step two, connecting the wave-transparent panel 6 and thecover body 8 together.
In the first step, the manufacturing steps of the wave-transparent panel 6 are as follows: step (1), sequentially putting a raw material for manufacturing anupper skin 1, a special-shaped nut, a raw material for manufacturing a middle layer and a raw material for manufacturing alower skin 5 into a die; step (2), closing the mould, heating and pressurizing; step (3), cooling the mold and then demolding to obtain a wave-transmitting panel blank; and (4) machining the blank of the wave-transmitting panel and spraying protective paint to ensure that the panel is free of flash, the surface is smooth and clean, the wave-transmitting panel is obtained, and the special-shaped nut is embedded in the wave-transmitting panel obtained in the first step.
Before the step (1), the raw material for the upper skin, the raw material for manufacturing the intermediate layer and the raw material for manufacturing thelower skin 1 can be cut according to the design requirements of the radome to obtain the required size and quantity. The raw material of theupper skin 1 and the raw material of thelower skin 5 both preferably comprise glass fiber cloth or quartz fiber cloth. Before use, the glass fiber cloth or the quartz fiber cloth is soaked in a low-dielectric epoxy resin system to obtain the glass fiber cloth or the quartz fiber cloth prepreg. The raw material of the core layer 4 is preferably microfoamed PMI. The number of layers of prepreg in the skin is preferably 2-8. Thelower skin 5 preferably comprises 2-8 pieces of fiberglass cloth or quartz fiber cloth in a complete square shape. Theupper skin 1 preferably comprises 2-8 pieces of glass fiber cloth or quartz fiber cloth, the glass fiber cloth or the quartz fiber cloth is provided with openings at positions corresponding to the special-shaped nuts, the glass fiber cloth or the quartz fiber cloth positioned at the outermost side is only provided with openings, and the rest of the glass fiber cloth or the quartz fiber cloth is provided with a gap for communicating the openings with the outer side besides the openings. Preferably, the gaps of two adjacent layers of glass fiber cloth or quartz fiber cloth are not opposite. Thereby avoiding a situation where somewhere is too low. But allows and preferably the gap portions to face each other to facilitate the flow of the low dielectric epoxy between the cloths, making the filling of the gap more complete. The arrangement of the notch can more conveniently sleeve the cloth on the special-shaped nut. When the notch can cut the hole, the notch is caused unintentionally for the convenience of cutting, for example, only a cutting line for the convenience of entering the scissors. Or may be intentionally cut out. No matter how the gap exists, the effect of the gap is not influenced. In the step (1), the antenna can be embedded in theupper skin 1. Thereby forming an integral structure of the antenna and the wave-transparent panel. In this case, the shaped bolt is preferably attached to the antenna. On the one hand, the mutual stability of multiplicable, antenna, the offset of special-shaped bolt when further reducing hot briquetting, on the other hand, special-shaped bolt has prolonged length, the direction of antenna, and signal reception is more stable, more sensitive. In the step (2), preferably, the whole mold is placed into a molding press and pressurized, the pressure is 0.5-1MPa, the temperature is raised, when the temperature reaches 100-120 ℃, the gas is exhausted for 3-5 times, then the temperature is raised continuously, when the temperature reaches 130-150 ℃, the pressure is raised to 4-6MPa, and the heat preservation and pressure maintaining are carried out for 1-2 h; and taking out the mold after the heat preservation and pressure maintaining time is up. Step (3) preferably, the mold is placed in a cooling chamber and cooled to room temperature. Compare in the cooling under the natural environment, the temperature in the cooling chamber is controllable, and then can effectively guarantee the cooling time of product, avoids appearing the condition of fracture, especially under the condition of prefabricated antenna on the wave-transparent panel. The base and the cover body can be manufactured by a conventional manufacturing method, so detailed description is omitted. And (4) forming a hole at the position corresponding to the special-shaped nut on the cover body obtained in the step one. In the first step, a base is manufactured, and the base obtained in the first step is provided with an opening at a position corresponding to the special-shaped nut. In the second step, the screw sequentially penetrates through the opening on the base and the opening on the cover body and then is inserted into the special-shaped nut, so that the wave-transmitting panel, the cover body and the base are connected together. In the step (4), the upper skin and thelower skin 1 are preferably 0.1-0.5mm thick, and the thickness of the spray paint is 20-100 μm.
Testing the antenna housing obtained by the patent:
testing one: the safety torque test of the antenna housing prepared by the method and the punching method has the following test results:
and (2) testing: the drawing force of the antenna housing prepared by the method and the punching method is tested, and the test results are as follows:
the invention has the following advantages:
this scheme need not punch on wave-transparent panel or the cover body, can not bring the damage to wave-transparent panel's outward appearance and inside.
This scheme need not punch on wave-transparent panel or the cover body, compare in punching and the scheme of using screw connection to the antenna house panel, waterproof dustproof effect is more excellent, can reach IP67 rank.
The process of punching at wave-transparent panel or the cover body is saved to this scheme, compares in the scheme of punching the connection on wave-transparent panel, and the assembly time of every product is saved about 10% on average.
The anti-torsion and anti-damage capability of the screw connection is stronger, and compared with a connection scheme of punching on the wave-transparent panel, the safe torque of the screw connection is improved by about 60% on average.
The ability that this scheme screw connection anti vertical panel pulled out the destruction is stronger, compares in the connection scheme who punches on wave-transparent panel, and screw connection's drawing force improves about 50% on average.
The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The low-cost 5G radome sealing method is characterized in that a special-shaped nut is pre-embedded in a wave-transmitting panel of a radome, a hole is formed in the position, corresponding to the special-shaped nut, of a radome body, and the wave-transmitting panel and the radome body are connected together in a mode that a screw penetrates through the hole to be connected with the special-shaped nut.
2. The low-cost 5G radome sealing method of claim 1, wherein: the cross section of the special-shaped nut is oval, square, round or polygonal.
3. The low-cost 5G radome sealing method of claim 1, wherein: the wave-transmitting panel is of a skin sandwich structure and sequentially comprises an upper skin, a middle layer and a lower skin from top to bottom, the top end of the special-shaped nut props against the upper skin, the tail end of the special-shaped nut penetrates through the middle layer and the lower skin, and a port is flush with the outermost side of the lower skin or extends out of the outermost side of the lower skin.
4. Low-cost 5G antenna house, including passing ripples panel, the cover body, its characterized in that, pass and have buried special-shaped nut underground in the ripples panel, the position department trompil that the cover body corresponds with special-shaped nut passes the mode that special-shaped nut was connected to the trompil through the screw, will pass ripples panel and cover body link together.
5. The low-cost 5G radome of claim 4 wherein: the wave-transmitting panel is of a skin sandwich structure and sequentially comprises an upper skin, a middle layer and a lower skin from top to bottom, the top end of the special-shaped nut props against the upper skin, the tail end of the special-shaped nut penetrates through the middle layer and the lower skin, and a port extends out of the outermost side of the lower skin and then enters the opening of the cover body.
6. The low-cost 5G radome of claim 4 wherein: the wave-transmitting panel is characterized by further comprising a base, wherein an opening is formed in the base, and the screw sequentially penetrates through the opening in the base and the opening in the cover body and then is inserted into the special-shaped nut, so that the wave-transmitting panel, the cover body and the base are connected together.
7. The preparation method of the low-cost 5G antenna housing comprises the following steps: step one, manufacturing a wave-transparent panel and a cover body; step two, connecting the wave-transparent panel and the cover body together; it is characterized in that the preparation method is characterized in that,
in the first step, the manufacturing steps of the wave-transparent panel are as follows:
step (1), sequentially putting a raw material for manufacturing an upper skin, a special-shaped nut, a raw material for manufacturing an intermediate layer and a raw material for manufacturing a lower skin into a die;
step (2), closing the mould, heating and pressurizing;
step (3), cooling the mold and then demolding to obtain a wave-transmitting panel blank;
step (4), machining and spraying protective paint on the wave-transmitting panel blank to ensure that the panel is deburred, and the surface is smooth and clean to obtain a wave-transmitting panel;
a special-shaped nut is embedded in the wave-transparent panel obtained in the first step, and a hole is formed in the position, corresponding to the special-shaped nut, of the cover body obtained in the first step;
in the second step, the wave-transmitting panel and the cover body are connected together in a mode that a screw penetrates through the opening hole to be connected with the special-shaped nut.
8. The method for preparing a low-cost 5G radome of claim 7, wherein: the first step also comprises the step of manufacturing a base, wherein an opening is formed in the position, corresponding to the special-shaped nut, of the base obtained in the first step;
in the second step, the screw sequentially penetrates through the opening on the base and the opening on the cover body and then is inserted into the special-shaped nut, so that the wave-transmitting panel, the cover body and the base are connected together.
9. The method for preparing a low-cost 5G radome of claim 7, wherein: in the step (2), the whole mould is placed into a mould pressing machine and pressurized, the pressure is 0.5-1MPa, the temperature is raised, when the temperature reaches 120 ℃ of 100-; and taking out the mold after the heat preservation and pressure maintaining time is up.
10. The method for preparing a low-cost 5G radome of claim 7, wherein: the upper skin and the lower skin are both 0.1-0.5mm in thickness, and the thickness of the spray paint is 20-100 mu m.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110545629.4ACN113823908B (en) | 2021-05-19 | 2021-05-19 | Low-cost 5G antenna housing and sealing method and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110545629.4ACN113823908B (en) | 2021-05-19 | 2021-05-19 | Low-cost 5G antenna housing and sealing method and preparation method thereof |
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| CN113823908B CN113823908B (en) | 2024-07-05 |
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- 2021
- 2021-05-19CNCN202110545629.4Apatent/CN113823908B/enactiveActive
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| CN203521607U (en)* | 2013-09-24 | 2014-04-02 | 上海之合玻璃钢有限公司 | Assembled radome |
| CN205429161U (en)* | 2015-12-22 | 2016-08-03 | 中国航空工业集团公司济南特种结构研究所 | Radome sandwich structure |
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| CN113823908B (en) | 2024-07-05 |
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