Novel built-in antenna

Abstract

The utility model discloses a novel built-in antenna, which comprises a coaxial cable, a connecting terminal arranged at one end of the coaxial cable, a radiation module arranged at the other end of the coaxial cable, and a shell coated outside the radiation module, the coaxial cable comprises an internal main feeder line and a grounding layer wrapping the periphery of the main feeder line part, the radiation module comprises a first metal piece and a second metal piece which are oppositely arranged left and right, the first metal piece is provided with a grounding pin, the second metal piece is provided with a feed pin, and the first metal piece and the second metal piece are oppositely arranged left and right. The grounding pin is electrically connected with the grounding layer, and the feed pin is electrically connected with the main feed line. The built-in antenna is simple in structure, low in production cost and good in waterproofness, and miniaturization and lightweight design of the built-in antenna are facilitated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to communication antenna technical field, especially, a kind of novel built-in antenna. BACKGROUND

[0002] With the development of science and technology, the current virtual reality (Virtual Reality, VR) glasses device gradually to miniaturization, portable development. The control antenna system of existing VR glasses needs to use built-in antenna, however, traditional built-in antenna will occupy VR glasses device internal large space, not conducive to the miniaturization development of VR glasses.

[0003] In the prior art, Chinese patent publication No. CN220569888U discloses a WIFI antenna applied to VR glasses, which includes a coaxial cable and a flexible circuit board. The flexible circuit board is an S-shaped circuit board, and the ground feed of the S-shaped circuit board is connected. The other end of the coaxial cable enters the first circuit board, the first gap and the second circuit board of the S-shaped circuit board in sequence from the top end of the S-shaped circuit board. The braided layer of the coaxial cable is connected to the first circuit board, and the core wire of the coaxial cable is connected to the second circuit board. The braided layer and the core wire are connected to each other through the flexible circuit board. In order to further reduce the size of the antenna, the flexible circuit board is made smaller and the circuit on the flexible circuit board is more complex and intricate, making the processing of the flexible circuit board very difficult and increasing the production cost. Moreover, the circuit board is flexible and prone to deformation, which will affect the circuit layout on the circuit board and make the antenna unable to receive and transmit signals, thereby affecting the normal use of the VR glasses.

[0004] Therefore, it is necessary to provide a novel built-in antenna to solve the above technical problems. CONTENT OF UTILITY MODEL

[0005] The main purpose of the utility model is to provide a novel built-in antenna with simple structure, which is beneficial to the miniaturization and lightweight design of the built-in antenna, has low production cost and good waterproofness.

[0006] The utility model achieves the above-mentioned purposes through the following technical solutions: a novel built-in antenna includes a coaxial cable, a connection terminal arranged at one end of the coaxial cable, a radiation module arranged at the other end of the coaxial cable, and a shell wrapped outside the radiation module. The coaxial cable includes an internal main feed line and a ground layer wrapped around the outer periphery of the main feed line. The radiation module includes a first metal piece and a second metal piece arranged opposite to each other. The first metal piece is provided with a ground pin, and the second metal piece is provided with a feed pin. The ground pin is electrically connected to the ground layer, and the feed pin is electrically connected to the main feed line.

[0007] Further, the first metal piece and the second metal piece are both in tubular structure.

[0008] Further, the first metal piece and the second metal piece are both copper tubes.

[0009] Further, the left end of the first metal piece is a first open end, and the right end is a first closed end; the left end of the second metal piece is a second closed end, and the right end is a second open end; the first closed end and the second closed end are arranged side by side, and a gap space is formed between the first closed end and the second closed end.

[0010] Further, a first profiled through hole cooperating with the ground layer is arranged on the first closed end, and a ground pin is arranged around the first profiled through hole; the ground layer is welded to the ground pin to realize fixed connection of the first metal piece and the coaxial cable.

[0011] A second profiled through hole cooperating with the main feeder is arranged on the second closed end, and a feeder pin is arranged around the second profiled through hole; the main feeder is welded to the feeder pin to realize fixed connection of the second metal piece and the coaxial cable.

[0012] Further, the shell comprises a first shell and a second shell, the first shell and the second shell are butt-jointed to form a receiving space, one end of the coaxial cable and the radiation module are accommodated in the receiving space.

[0013] Further, one end of the first shell is arranged as a third closed end, and the other end is arranged as a third open end; one end of the second shell is arranged as a fourth open end butt-jointed with the third open end, and the other end is arranged as a fourth closed end.

[0014] Further, the second metal piece is arranged inside the second shell, the second open end faces the fourth closed end, and the second closed end faces the fourth open end; a protective pad is arranged between the second open end and the fourth closed end.

[0015] Further, an annular flange is arranged outside the fourth open end of the first shell, an annular groove is formed between the outer wall of the annular flange and the outer wall of the second shell, the annular flange extends into the interior of the second shell when the first shell and the second shell are butt-jointed, and the inner wall of the second shell is in contact with the outer wall of the annular flange.

[0016] Further, the first shell is provided with a third profiled through hole for the coaxial cable to pass through, the first shell is provided with a positioning ring extending from the inner wall of the third closed end to the third open end, the positioning ring extends into the first metal piece and positions the first metal piece, the inside of the positioning ring is provided with a through hole for the coaxial cable to pass through, and the outer wall of the positioning ring is profiled with the inner wall of the first metal piece.

[0017] Compared with the prior art, the novel built-in antenna has the advantages that:

[0018] (1) The radiation module comprises first and second metal pieces oppositely arranged left and right, and the first and second metal pieces are both copper pipes, which have good electrical conductivity and good strength, and the tubular structure can not only ensure the connection strength but also reduce the overall weight of the built-in antenna, which is beneficial to the miniaturization and lightweight design of the built-in antenna, and compared with the circuit board in the prior art, the structure is simple and the production cost is low;

[0019] (2) The first and second metal pieces are both fixed on the coaxial cable by welding, and the first and second metal pieces are both copper pipes, which are hard materials, so that the first and second metal pieces will not be shifted when being welded on the coaxial cable, and the reliability of the connection can be ensured, so that the position shift between the first and second metal pieces and the coaxial cable can be avoided to affect the reception and transmission of signals;

[0020] (3) The first shell and the second shell are connected by ultrasonic process, which can realize the close covering between the first shell and the second shell, so as to prevent water, dust and the like from entering the accommodation space through the connection between the first shell and the second shell, and the waterproof performance is good, which effectively protects the coaxial cable and the radiation module and prevents the performance of the coaxial cable and the radiation module from being affected. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a three-dimensional structure schematic view of the novel built-in antenna of the embodiment of the utility model;

[0022] Figure 2 It is a sectional structure schematic view of the novel built-in antenna of the embodiment of the utility model;

[0023] Figure 3 It is an explosion structure schematic view of the novel built-in antenna of the embodiment of the utility model;

[0024] Figure 4 It is an explosion structure schematic view of the novel built-in antenna of the embodiment of the utility model;

[0025] Figures in the drawing represent:

[0026] 100 - novel built-in antenna;

[0027] 1-coaxial cable, 11-main feeder, 12-ground layer; 2-connection terminal;

[0028] 3-radiation module, 31-first metal piece, 311-first open end, 312-first closed end, 313-first profiled through hole, 32-second metal piece, 321-second closed end, 322-second open end, 323-second profiled through hole, 33-gap space;

[0029] 4-housing, 41-first housing, 411-third closed end, 412-third open end, 413-annular flange, 414-annular groove, 415-third profiled through hole, 416-positioning ring, 417-through hole, 42-second housing, 421-fourth open end, 422-fourth closed end, 43-accommodation space.

DETAILED DESCRIPTION

[0030] Please refer to Figures 1-4 The embodiment is a novel built-in antenna 100, which comprises a coaxial cable 1, a connection terminal 2 arranged at one end of the coaxial cable 1, a radiation module 3 arranged at the other end of the coaxial cable 1, and a housing 4 covering the outside of the radiation module 3. The coaxial cable 1 comprises a main feeder 11 inside and a ground layer 12 wrapped around the outer periphery of the main feeder 11. The radiation module 3 comprises a first metal piece 31 and a second metal piece 32 arranged opposite to each other. The first metal piece 31 is provided with a grounding pin, and the second metal piece 32 is provided with a feeding pin. The grounding pin is electrically connected to the ground layer 12, and the feeding pin is electrically connected to the main feeder 11.

[0031] In the embodiment, the first metal piece 31 and the second metal piece 32 are both in a tubular structure. The tubular structure can not only ensure the connection strength, but also reduce the overall weight of the built-in antenna, which is conducive to the miniaturization and lightweight design of the built-in antenna. In other embodiments, the first metal piece 31 and the second metal piece 32 can be other structures, which can be set according to actual conditions, and are not limited herein.

[0032] In the embodiment, the first metal piece 31 and the second metal piece 32 are both copper pipes. The copper pipe has good conductivity and strength. Compared with the circuit board in the prior art, the copper pipe not only has good conductivity, but also has a simple structure and low production cost. In other embodiments, the first metal piece 31 and the second metal piece 32 can be other conductive metal pipes, which are not limited herein.

[0033] The left end of the first metal piece 31 is a first open end 311, and the right end is a first closed end 312. The left end of the second metal piece 32 is a second closed end 321, and the right end is a second open end 322. The first closed end 312 and the second closed end 321 are arranged side by side. Since the ground layer 12 and the main feeder 11 are located at different positions of the coaxial cable 1, the first closed end 312 and the second closed end 321 are located at different positions of the coaxial cable 1. The first closed end 312 and the second closed end 321 are arranged side by side, and a gap space 33 is formed between the first closed end 312 and the second closed end 321. Therefore, the first metal piece 31 and the second metal piece 32 are located on the same horizontal line and are connected at different positions of the coaxial cable 1. The gap space 33 can ensure the waveform depth and radiation efficiency of the WIFI 6E frequency band, and can also resist the influence of poor assembly consistency caused by assembly errors to a certain extent.

[0034] The first closed end 312 is provided with a first profiled through hole 313 matched with the ground layer 12. The first profiled through hole 313 is provided with a grounding pin around it. The ground layer 12 is welded to the grounding pin. On the one hand, the first metal piece 31 is fixedly connected with the coaxial cable 1. On the other hand, the ground layer 12 is electrically connected with the grounding pin. The second closed end 321 is provided with a second profiled through hole 323 matched with the main feeder 11. The second profiled through hole 323 is provided with a feeder pin around it. The main feeder 11 is welded to the feeder pin. On the one hand, the second metal piece 32 is fixedly connected with the coaxial cable 1. On the other hand, the main feeder 11 is electrically connected with the feeder pin. The first metal piece 31 and the second metal piece 32 are fixed on the coaxial cable 1 by welding. Moreover, the first metal piece 31 and the second metal piece 32 are copper pipes, which are hard materials. When the first metal piece 31 and the second metal piece 32 are welded on the coaxial cable 1, there will be no position deviation. The position deviation between the first metal piece 31, the second metal piece 32 and the coaxial cable 1 can be avoided to affect the reception and transmission of signals.

[0035] The shell 4 includes a first shell 41 and a second shell 42. The first shell 41 and the second shell 42 are butt-jointed to form a receiving space 43. One end of the coaxial cable 1 and the radiation module 3 are accommodated in the receiving space 43. One end of the first shell 41 is provided as a third closed end 411, and the other end is provided as a third open end 412. One end of the second shell 42 is provided as a fourth open end 421 butt-jointed with the third open end 412, and the other end is provided as a fourth closed end 422.

[0036] The second metal piece 32 is arranged inside the second shell 42, and the second open end 322 faces the fourth closed end 422, and the second closed end 321 faces the fourth open end 421. Since the second open end 322 faces the fourth closed end 422, in order to prevent the problem of collision between the second open end 322 and the fourth closed end 422, a protective pad (not shown in the figure) is arranged between the second open end 322 and the fourth closed end 422. The protective pad (not shown in the figure) can prevent the second metal piece 32 from contacting the inner wall of the second shell 42; and the protective pad (not shown in the figure) can buffer external force on the second shell 42, weakening the influence of the external force on the second metal piece 32. The protective pad (not shown in the figure) can be a foam layer, or other flexible materials, which are not limited here.

[0037] The fourth open end 412 of the first shell 41 is outwardly provided with an annular flange 413, the height of the annular flange 413 is lower than the height of the outer wall of the second shell 42, so that an annular groove 414 is formed between the outer wall of the annular flange 413 and the outer wall of the second shell 42. When the first shell 41 and the second shell 42 are butt-jointed, the third open end 412 and the fourth open end 421 are butt-jointed left and right, the annular flange 413 extends into the inside of the fourth open end 421 of the second shell 42, the shell wall of the second shell 42 is conformally fitted with the annular groove 414, the inner wall of the second shell 42 is in contact with the outer wall of the annular flange 413, and the outer wall of the second shell 42 is flush with the outer wall of the first shell 41. The contact sealing between the inner wall of the second shell 42 and the outer wall of the annular flange 413 can prevent moisture, dust and the like from entering the accommodation space 43 through the position where the inner wall of the second shell 42 and the outer wall of the annular flange 413 are in contact, effectively protecting the coaxial cable 1 and the radiation module 3, and preventing the performance of the coaxial cable 1 and the radiation module 3 from being affected; the outer wall of the first shell 41 is flush with the outer wall of the second shell 42, which can ensure the consistency of the height of the shell 4 and the aesthetics of the built-in antenna. After the first shell 41 and the second shell 42 are butt-jointed, ultrasonic welding is used to connect the first shell 41 and the second shell 42, realizing the fixed connection of the first shell 41 and the second shell 42. The use of ultrasonic technology to connect the first shell 41 and the second shell 42 eliminates the need for buckle structures or screw fixing columns, further reducing the volume and weight, which is conducive to the miniaturization and lightweight design of the built-in antenna, and also reduces the influence of metal screws and other components on the performance of the built-in antenna; and the structure of ultrasonic connection is combined tightly, which can realize the tight covering between the first shell 41 and the second shell 42, thereby preventing moisture, dust and the like from entering the accommodation space 43 through the connection between the first shell 41 and the second shell 42, effectively protecting the coaxial cable 1 and the radiation module 3, and preventing the performance of the coaxial cable 1 and the radiation module 3 from being affected.

[0038] The first shell 41 is provided with a third profiled through hole 415 for the coaxial cable 1 to pass through, the coaxial cable 1 is profiled matched with the third profiled through hole 415, the first shell 41 is provided with a positioning ring 416 extending from the inner wall of the third closed end 411 to the third opening end 412, the positioning ring 416 extends into the interior of the first metal piece 31 and positions the first metal piece 31, the interior of the positioning ring 416 is provided with a through hole 417 for the coaxial cable 1 to pass through, the outer wall of the positioning ring 416 is profiled matched with the inner wall of the first metal piece 31, the first metal piece 31 is arranged on the coaxial cable 1, when the first metal piece 31 is arranged in place, the first opening end 311 abuts against the inner wall of the third closed end 411, and the positioning ring 416 extends into the interior of the first metal piece 31, so that the positioning ring 416 positions the first metal piece 31 and prevents the first metal piece 31 from moving in the radial direction.

[0039] When the built-in antenna is assembled, one end of the coaxial cable 1 is mounted with the connecting terminal 2, the other end of the coaxial cable 1 passes through the third opening end 412 from the third closed end 411 of the first shell 41 through the first profiled through hole 415, the other end of the coaxial cable 1 extends out of the third opening end 412, the first metal piece 31 is arranged on the coaxial cable 1, when the first metal piece 31 is arranged in place, the first opening end 311 abuts against the inner wall of the third closed end 411, the positioning ring 416 extends into the interior of the first metal piece 31, meanwhile, the grounding pin on the first profiled through hole 313 is in contact with the grounding layer 12, the grounding layer 12 is welded to the grounding pin, then the second metal piece 32 is arranged on the coaxial cable 1, when the second metal piece 32 is arranged in place, the feeding pin of the second profiled through hole 323 is in contact with the main feeding line 11, the main feeding line 11 is welded to the feeding pin, then the second shell 42 is butted and buckled on the first shell 41, the first shell 41 and the second shell 42 are connected by ultrasonic welding, so that the first shell 41 and the second shell 42 are fixedly connected, and the assembly of the built-in antenna is completed.

[0040] When the novel built-in antenna 100 provided by the scheme is applied, the connecting terminal 2 is buckled on the mainboard, connected with the matching bit through the microstrip line, and the radiation module 3 serves as an antenna radiator and can receive or emit signals.

[0041] The above only describes some embodiments of the present application. Those skilled in the art can make some modifications and improvements without departing from the inventive concept, and these all belong to the protection scope of the present application.

Claims

1. A novel built-in antenna, characterized in that: It includes a coaxial cable, a connection terminal at one end of the coaxial cable, a radiating module at the other end of the coaxial cable, and a housing covering the outside of the radiating module. The coaxial cable includes an internal main feed line and a grounding layer surrounding the main feed line. The radiating module includes a first metal part and a second metal part arranged opposite to each other. The first metal part is provided with a grounding pin, and the second metal part is provided with a power supply pin. The grounding pin is electrically connected to the grounding layer, and the power supply pin is electrically connected to the main feed line.

2. The novel built-in antenna as described in claim 1, characterized in that: Both the first metal component and the second metal component are tubular structures.

3. The novel built-in antenna as described in claim 1, characterized in that: Both the first metal component and the second metal component are copper tubes.

4. The novel built-in antenna as described in claim 1, characterized in that: The left end of the first metal part is a first open end and the right end is a first closed end. The left end of the second metal part is a second closed end and the right end is a second open end. The first closed end and the second closed end are arranged adjacent to each other and a gap space is formed between the first closed end and the second closed end.

5. A novel built-in antenna as described in claim 4, characterized in that: The first closed end is provided with a first contoured through hole that mates with the grounding layer. Grounding pins are provided around the first contoured through hole. The grounding layer is soldered to the grounding pins to achieve a fixed connection between the first metal part and the coaxial cable. The second closed end is provided with a second contoured through hole that mates with the main feed line. Power supply pins are provided around the second contoured through hole. The main feed line is soldered to the power supply pins to achieve a fixed connection between the second metal part and the coaxial cable.

6. A novel built-in antenna as described in claim 4, characterized in that: The housing includes a first housing and a second housing, which are mated and fastened together to form a receiving space. One end of the coaxial cable and the radiation module are housed in the receiving space.

7. A novel built-in antenna as described in claim 6, characterized in that: The first housing has a third closed end at one end and a third open end at the other end. The second housing has a fourth open end at one end that is connected and fastened to the third open end, and a fourth closed end at the other end.

8. A novel built-in antenna as described in claim 7, characterized in that: The second metal part is disposed inside the second housing, with the second open end facing the fourth closed end and the second closed end facing the fourth open end, and a protective pad is provided between the second open end and the fourth closed end.

9. A novel built-in antenna as described in claim 7, characterized in that: An annular flange extends outward from the fourth opening end of the first housing. An annular groove is formed between the outer wall of the annular flange and the outer wall of the second housing. When the first housing and the second housing are mated and fastened, the annular flange extends into the interior of the second housing, and the inner wall of the second housing contacts and seals with the outer wall of the annular flange.

10. A novel built-in antenna as described in claim 7, characterized in that: The first housing is provided with a third contoured through hole for the coaxial cable to pass through. The first housing extends from the inner wall of the third closed end to the third open end and is provided with a positioning ring that extends into the first metal part and positions the first metal part. The positioning ring is provided with a through hole for the coaxial cable to pass through. The outer wall of the positioning ring is contoured to the inner wall of the first metal part.

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