Integrated antenna for wireless earphone decoration structure

Abstract

The utility model discloses an integrated antenna for a wireless earphone decoration structure, which comprises an earphone shell, a metal decoration ring and a PCB (Printed Circuit Board), the earphone shell is made of an insulating material, the peripheral wall of the earphone shell is provided with a positioning groove, the metal decoration ring extends along the peripheral wall of the positioning groove and is clamped in the earphone shell, and the PCB is arranged in the positioning groove. The metal decorative ring is a metal antenna, the PCB is provided with a Bluetooth chip, and a radio frequency signal port of the Bluetooth chip is electrically connected with the metal decorative ring through at least one antenna feeding point. An opening is formed in a certain position of the metal decorative ring, so that the decorative ring is completely disconnected at the opening, the metal decorative sheet serves as a radiation antenna, antenna feeding points are designed at certain two positions of the metal decorative sheet, one feeding point is connected with a radio frequency signal port, the other feeding point is connected with a PCB ground plane, a loop antenna is formed, and a radio frequency signal is fed through the loop antenna. The radio-frequency signal is transmitted and received, and the metal decorative ring is prevented from influencing the design limitation of the antenna in the earphone.

Description

Technical Field

[0001] The utility model relates to the field of wireless earphones, in particular to an antenna integrated with a decorative structure for wireless earphones. Background Art

[0002] Bluetooth TWS headsets are widely popular in the consumer electronics market. In order to make the industrial ID of Bluetooth headsets more beautiful and attractive to consumers, many Bluetooth headsets use metal decorative rings to increase the effect. While metal decorative rings bring the benefits of texture, they also bring negative effects, greatly affecting the effect and layout of the antenna inside the headset, usually reducing the efficiency of the internal antenna. Utility Model Content

[0003] The main purpose of the utility model is to provide an antenna with an integrated decorative structure for wireless earphones, so as to make the design of Bluetooth earphones more flexible. It avoids the limitation of the design of the antenna inside the earphones affected by the metal decorative ring;

[0004] At the same time, the performance of the metal decorative ring as a loop antenna is enhanced, which greatly improves the signal quality of the Bluetooth headset.

[0005] To achieve the above-mentioned purpose, the utility model proposes an antenna integrated with a wireless headset decoration structure, comprising:

[0006] An earphone housing, wherein the earphone housing is made of insulating material and a positioning groove is provided on the outer peripheral wall of the earphone housing;

[0007] A metal decorative ring, which extends along the peripheral wall of the positioning groove and is clamped on the earphone housing, and the metal decorative ring is a metal antenna;

[0008] A PCB board is provided with a Bluetooth chip, and a radio frequency signal port of the Bluetooth chip is electrically connected to the metal decorative ring through at least one antenna feeding point.

[0009] In the actual design, an opening is set at a certain position of the metal decorative ring so that the decorative ring is completely disconnected at the opening, thereby making the metal decorative ring serve as a radiating antenna, and antenna feeding points are designed at two positions of the metal decorative ring, one feeding point is connected to the RF signal port, and the other feeding point is connected to the PCB ground plane to form a loop antenna, through which the RF signal is fed to complete the transmission and reception of the RF signal, thereby avoiding the influence of the metal decorative ring on the internal antenna design of the headset, and at the same time enhancing the performance of the metal decorative ring as a loop antenna, so that the signal quality of the Bluetooth headset is greatly improved.

[0010] The advantage of this design is that

[0011] 1. When a single antenna feed point is electrically connected to the metal decorative ring, it is a monopole antenna (a vertical antenna with a quarter wavelength is called a monopole antenna);

[0012] 2. When there are two antenna feeding points, it is a loop antenna. Loop antenna is usually composed of one or more conductor loops, which can be circular, elliptical or other shapes. The conductor loop is connected to the receiver or transmitter through a connector inside, and fixed to the desired position by a bracket or other fixing device outside. It has the characteristics of high sensitivity and strong directionality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the antenna installed on the earphone housing;

[0014] Figure 2 is a schematic diagram of a metal decorative ring;

[0015] Figure 3 Schematic diagram of loop antenna;

[0016] Figure 4 Schematic diagram of a monopole antenna.

[0017] In the figure, 1 is the earphone housing, 11 is the positioning groove,

[0018] 2 is a metal decorative ring, 20 is an opening,

[0019] 3 is the PCB board, 31 is the Bluetooth chip,

[0020] 41 is the antenna feeding point, and 42 is the antenna spring connector. DETAILED DESCRIPTION

[0021] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0023] In addition, if there are descriptions involving "first" or "second" etc. in the embodiments of the utility model, the descriptions of "first" or "second" etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0024] like Figures 1 to 4 As shown, an antenna integrated with a wireless headset decoration structure includes:

[0025] An earphone housing 1, wherein the earphone housing 1 is made of insulating material, and a positioning groove 11 is provided on the outer peripheral wall of the earphone housing 1;

[0026] A metal decorative ring 2, which extends along the peripheral wall of the positioning groove 11 and is clamped on the earphone housing 1, and the metal decorative ring 2 is a metal antenna;

[0027] The PCB board 3 is provided with a Bluetooth chip 31 , and a radio frequency signal port of the Bluetooth chip 31 is electrically connected to the metal decorative ring 2 through at least one antenna feeding point 41 .

[0028] In the actual design, an opening 20 is set somewhere on the metal decorative ring 2, so that the decorative ring is completely disconnected at the opening 20, so that the metal decorative ring serves as a radiating antenna, and an antenna feeding point 41 is designed at 2 places on the metal decorative ring, one feeding point is connected to the RF signal port, and the other feeding point is connected to the PCB ground plane to form a loop antenna, through which the RF signal is fed to complete the transmission and reception of the RF signal, thereby avoiding the influence of the metal decorative ring 2 on the internal antenna design of the headset, and at the same time enhancing the performance of the metal decorative ring 2 as a loop antenna, so that the signal quality of the Bluetooth headset is greatly improved.

[0029] The advantages of this design are: 1. When a single antenna feeding point 41 is electrically connected to the metal decorative ring 2, it is a monopole antenna (a vertical antenna with a quarter wavelength is called a monopole antenna);

[0030] 2. When there are two antenna feeding points 41, it is a loop antenna. The loop antenna is usually composed of one or more conductor loops, which can be circular, elliptical or other shapes. The conductor loop is connected to the receiver or transmitter through a connector inside, and is fixed to the desired position by a bracket or other fixing device outside. It has the characteristics of high sensitivity and strong directionality.

[0031] Specifically, the metal decorative ring 2 is provided with an opening 20, the antenna feed point 41 is provided at one end of the opening 20, the other end of the opening 20 is provided with an antenna shrapnel connector 42, and the antenna shrapnel connector 42 is welded on the PCB board 3. The antenna feed point 41 refers to the process of transferring the radio frequency energy emitted from the transmitter to the antenna. In radio communication, the antenna feed point 41 is a very important link, and its correctness and stability have a vital impact on the communication quality.

[0032] Generally, the process of the antenna feed point 41 can be divided into two links: the signal energy is transmitted from the transmitter output end to the feeder, and then from the feeder output end to the antenna. Among them, the transmitter end is directly connected to the coaxial cable, and the antenna end is connected to the antenna itself. In the feeder, the signal reaches the antenna end after multiple transmissions, reflections, etc., thus forming a radio frequency field.

[0033] The opening 20 can fix the RF energy output direction of the antenna, thereby reducing the generation of interference signals.

[0034] In the embodiment of the utility model, the ground end of the PCB board 3 is connected to the antenna spring connector 42, and the metal decorative ring 2 forms a loop antenna. The benefit of grounding is that in PCB design, the ground plane is a very important part, which can play the role of electromagnetic shielding and safe grounding. The ground plane should cover the entire PCB board 3 as much as possible and be closely connected to the ground wire, which can effectively reduce interference in the circuit and improve the stability and reliability of the entire circuit.

[0035] Specifically, the earphone housing 1 is provided with a through hole, and the antenna feeding point 41 is an electric wire, which passes through the through hole and is welded to the metal decorative ring 2 .

[0036] In the embodiment of the utility model, the metal decorative ring is in a strip-shaped or sheet-like structure.

[0037] Specifically, the metal decorative ring 2 is provided with a first bending portion and a second bending portion (not shown) at both ends of the opening 20, and the housing is provided with a through hole for the first bending portion and the second bending portion to extend into, and the first bending portion and the second bending portion are respectively extended into the through hole and then welded to the PCB board 3. This reduces the use of wires, and at the same time, the metal decorative ring 2 is integrated with the earphone housing 1, making the appearance and the installation structure simpler and more stable.

[0038] In the embodiment of the utility model, the metal decorative ring 2 is combined with the earphone housing 1 by snapping or gluing.

[0039] Specifically, the electric wire is a 50-ohm impedance transmission line, and the electric wire is connected to a filter, which is used to filter out-of-band noise in the radio frequency signal.

[0040] In the embodiment of the utility model, the metal decorative ring 2 is symmetrically arranged with the opening 20 as the center line, and the metal decorative ring 2 is in a ring shape or a circle shape, thereby ensuring that the signal strength at each position is consistent.

[0041] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. An antenna integrated with a wireless headset decorative structure, characterized in that: include: An earphone housing, wherein the earphone housing is made of insulating material and a positioning groove is provided on the outer peripheral wall of the earphone housing; A metal decorative ring, which extends along the peripheral wall of the positioning groove and is clamped on the earphone housing, and the metal decorative ring is a metal antenna; A PCB board is provided with a Bluetooth chip, and a radio frequency signal port of the Bluetooth chip is electrically connected to the metal decorative ring through at least one antenna feeding point.

2. The antenna integrated with the wireless headset decoration structure as claimed in claim 1, characterized in that: The metal decorative ring is provided with an opening, the antenna feeding point is provided at one end of the opening, and the other end of the opening is provided with an antenna shrapnel connector, and the antenna shrapnel connector is welded on the PCB board.

3. The antenna integrated with the wireless headset decoration structure as claimed in claim 1, characterized in that: The grounding terminal of the PCB board is connected to the antenna spring connector, and the metal decorative ring forms a loop antenna.

4. The antenna integrated with the wireless headset decoration structure as claimed in claim 1, characterized in that: The earphone housing is provided with a through hole, and the antenna feeding point is an electric wire, which passes through the through hole and is welded to the metal decorative ring.

5. The antenna integrated with the wireless headset decoration structure as claimed in claim 1, characterized in that: The metal decorative ring is in a strip shape or a sheet structure.

6. The antenna integrated with the wireless headset decoration structure as claimed in claim 1, characterized in that: The metal decorative ring is provided with a first bending portion and a second bending portion at both ends of the opening, and the shell is provided with a through hole for the first bending portion and the second bending portion to extend into. The first bending portion and the second bending portion are respectively extended into the through holes and then welded to the PCB board.

7. The antenna integrated with the wireless headset decoration structure as claimed in claim 1, characterized in that: The metal decorative ring is combined with the earphone housing by means of snap-fitting and gluing.

8. The antenna integrated with the wireless headset decoration structure as claimed in claim 4, characterized in that: The electric wire is a 50-ohm impedance transmission line, and a filter is connected to the electric wire.

9. The antenna integrated with the wireless headset decoration structure as claimed in claim 4, characterized in that: The metal decorative ring is symmetrically arranged with the opening as the center line, and the metal decorative ring is in a ring shape or a circle shape.

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