Single-sided horn resonant cavity antenna structure and electronic equipment

Abstract

The utility model provides a single-face horn resonant cavity antenna structure and electronic equipment. A single-face horn resonant cavity antenna structure comprises a single-face horn, the single-face horn is provided with a horn cavity and a horn vibrating diaphragm, the single-face horn resonant cavity antenna structure further comprises a metal cavity, the metal cavity is formed in the peripheral surface of the horn cavity, and an avoiding opening is formed in the metal cavity so that the horn vibrating diaphragm can be exposed outside; and the antenna radiation branch knot is used for radiating signals outwards, and the antenna radiation branch knot is formed on the metal cavity. According to the invention, the antenna radiation branch knot is formed on the surface of the horn cavity of the single-sided horn, so that the human resource cost caused by film tearing, assembling and screwing in the current antenna assembling process is reduced; according to the single-sided horn resonant cavity antenna structure, the metal cavity is adopted, so that the system noise can be effectively shielded, and the radio frequency noise cost is reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of electronic equipment, and in particular to a single-sided horn resonant cavity antenna structure and electronic equipment. Background Art

[0002] At present, the antenna and speaker in the laptop are independent components separated from each other. Each component needs to be placed in a separate space when the whole machine is designed. Accordingly, for the all-metal body, a large window or T-shaped gap needs to be opened on the metal shell for antenna radiation, which affects the appearance of the laptop. Among them, since the antenna and speaker are independent components, the speaker and antenna need to be assembled separately during production and assembly, which has high labor costs.

[0003] However, as the design of laptops continues to iterate, the space left for antennas in laptop designs is getting smaller and smaller. In order to make better use of the space in laptops, people try to combine the speaker with the antenna, that is, to extend an additional part of the volume on the original speaker cavity, and use the extended part as the antenna bracket, so that the antenna is spliced ​​with the speaker through the bracket. However, this solution does not reduce the actual volume of the antenna and speaker. When designing the whole machine, a large space still needs to be reserved to place the antenna and speaker. Similarly, for a metal body, a large window still needs to be opened on the metal shell for antenna radiation, which affects the appearance of the shell. In addition, since the antenna does not have a noise shielding function, it is necessary to add a noise removal structure at the noise source or the propagation path from the noise source to the antenna to reduce the noise intensity.

[0004] Based on this, in order to better utilize the space of laptop computers and develop better products and break the design barriers, more innovative designs are needed to improve space utilization. Utility Model Content

[0005] The present disclosure provides a single-sided horn resonant cavity antenna structure and an electronic device to at least solve one of the technical problems existing in the prior art.

[0006] According to a first aspect of the present disclosure, a single-sided speaker resonant cavity antenna structure is provided, comprising a single-sided speaker having a speaker cavity and a speaker diaphragm, and further comprising:

[0007] A metal cavity, wherein the metal cavity is formed on the outer peripheral surface of the speaker cavity, and the metal cavity has an escape opening so that the speaker diaphragm is exposed to the outside;

[0008] The antenna radiation branch is used for radiating signals outwards, and the antenna radiation branch is formed on the metal cavity.

[0009] In one possible implementation manner, the metal cavity is a layer of metal coating formed on the outer peripheral surface of the speaker cavity.

[0010] In one possible implementation manner, the metal coating is formed on the outer peripheral surface of the speaker cavity by laser engraving or printing.

[0011] In one possible implementation, the metal cavity is a layer of flexible circuit board attached to the outer peripheral surface of the speaker cavity; wherein the flexible circuit board includes a metal foil, and the metal foil is attached to the outer peripheral surface of the speaker cavity.

[0012] In one possible implementation, the antenna radiation branch is integrally formed on the flexible circuit board, so that when the flexible circuit board is adhered to the outer peripheral surface of the speaker cavity, the antenna radiation branch can be integrally formed on the metal cavity.

[0013] In one possible implementation manner, a feeding point is further included, wherein the feeding point is arranged on the antenna radiation branch, and the feeding point is used to connect to the core of a cable so as to be connected to the network card through the cable.

[0014] In one possible implementation manner, a grounding point is further included, and the grounding point is arranged on the antenna radiation branch, and the grounding point is used to connect to the shielding layer of the cable.

[0015] In one possible implementation manner, it further includes a conductive foam, which is disposed on the surface of the metal cavity and avoids the antenna radiation branches.

[0016] According to a second aspect of the present disclosure, an electronic device is provided, comprising a single-sided horn resonant cavity antenna structure as described in any one of the above.

[0017] In one possible implementation manner, a gap for antenna radiation is provided on the electronic device, and a sealing member for sealing the gap is also provided on the electronic device, and the sealing member is made of a non-metallic material.

[0018] Compared with the prior art, the advantages of the present application are: 1) Compared with the traditional antenna, the single-sided horn resonant cavity antenna structure of the present application needs to reserve an additional clearance area or open a T-shaped gap to affect the aesthetics of the casing of the electronic device. When the single-sided horn resonant cavity antenna structure of the present application is applied to the electronic device, only a small gap needs to be opened on the casing to achieve antenna radiation and maintain the aesthetics of the casing of the electronic device; 2) The antenna radiation branches of the present application are formed on the surface of the horn cavity, and no additional antenna position needs to be reserved during design, which leaves a larger installation space for the casing of the electronic device and improves the space utilization rate inside the casing; 3) The antenna radiation branches of the present application are formed on the surface of the horn cavity of the single-sided horn, reducing the human resource costs caused by film tearing, assembly, and screwing in the current antenna assembly process; 4) The single-sided horn resonant cavity antenna structure of the present application uses a metal cavity, which can effectively shield system noise and reduce the cost of reducing RF noise; 5) The single-sided horn resonant cavity antenna structure of the present application is less affected by the overall machine environment and can be used on multiple models. It does not require customized debugging for different models and is suitable for standardized production.

[0019] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood by reading the detailed description below with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present disclosure are shown in an exemplary and non-limiting manner, in which:

[0021] In the drawings, the same or corresponding reference numerals represent the same or corresponding parts.

[0022] Figure 1 A schematic diagram showing a single-sided horn resonant cavity antenna structure according to an embodiment of the present disclosure Figure 1 ;

[0023] Figure 2 A schematic diagram showing a single-sided horn resonant cavity antenna structure according to an embodiment of the present disclosure Figure 2 ;

[0024] Figure 3 An exploded view of a single-sided horn resonant cavity antenna structure according to an embodiment of the present disclosure is shown. Figure 1 ;

[0025] Figure 4 An exploded view of a single-sided horn resonant cavity antenna structure according to an embodiment of the present disclosure is shown. Figure 2 ;

[0026] Figure 5 A schematic diagram showing the structure of a metal cavity of a single-sided horn resonant cavity antenna structure according to an embodiment of the present disclosure Figure 1 ;

[0027] Figure 6 A schematic diagram showing the structure of a metal cavity of a single-sided horn resonant cavity antenna structure according to an embodiment of the present disclosure Figure 2 ;

[0028] Figure 7 A schematic diagram showing the expansion of a metal cavity of a single-sided horn resonant cavity antenna structure according to an embodiment of the present disclosure is shown;

[0029] Figure 8 A schematic structural diagram of a cable of a single-sided horn resonant cavity antenna structure according to an embodiment of the present disclosure is shown;

[0030] Fig. 9 A schematic structural diagram showing a single-sided horn resonant cavity antenna structure installed in a casing according to an embodiment of the present disclosure is shown.

[0031] Explanation of the numbers in the figure: 1-single-sided speaker, 11-speaker cavity, 12-speaker diaphragm, 13-speaker electronic wire, 2-metal cavity, 21-avoidance, 22-ear avoidance, 3-antenna radiation branch, 4-feeding point, 5-cable, 51-inner conductor, 52-insulator, 53-outer conductor, 54-sheath, 6-grounding point, 7-conductive foam, 8-casing, 81-gap, 9-flexible circuit board. DETAILED DESCRIPTION

[0032] In order to make the purpose, features, and advantages of the present disclosure more obvious and easy to understand, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present disclosure.

[0033] According to one embodiment of the present disclosure, Figure 1-3 As shown, the utility model provides a single-sided speaker resonant cavity antenna structure, including a single-sided speaker 1, the single-sided speaker 1 has a speaker cavity 11 and a speaker diaphragm 12, and also includes:

[0034] A metal cavity 2, which is formed on the outer peripheral surface of the speaker cavity 11, and has a relief opening 21 to expose the speaker diaphragm 12 to the outside;

[0035] The antenna radiation branch 3 is used to radiate signals outward, and the antenna radiation branch 3 is formed on the metal cavity 2 .

[0036] In the present application, the single-sided speaker includes a speaker body, and the speaker body includes a speaker electronic wire 13, a speaker cavity 11 and a speaker diaphragm 12. The single-sided speaker adopts an existing well-known structure, and the speaker cavity 11 of the single-sided speaker is made of non-metallic material, and an antenna radiation branch 3 is designed in the non-metallic area on the side of the speaker cavity 11. In the present application, a metal cavity 2 is formed on the outer peripheral surface of the speaker cavity 11, and a single-sided speaker resonant cavity antenna structure is designed by superimposing the electromagnetic wave radiation of the antenna radiation branch 3 and the electromagnetic wave resonating in the metal cavity and radiating outward, and the volume of the single-sided speaker is not increased.

[0037] The working principle of the single-sided speaker resonant cavity antenna structure of the present application is that the excitation signal frequency matches the speaker cavity, and the electromagnetic wave is repeatedly reflected in the metal cavity to produce a resonance phenomenon, thereby radiating the signal outward. Therefore, the single-sided speaker resonant cavity antenna structure of the present application satisfies the function of the antenna and improves the antenna performance, and can also meet the function of the single-sided speaker at the same time.

[0038] The single-sided speaker resonant cavity antenna structure of the present application can be used in electronic devices, such as laptops. Compared with laptops with traditional antennas that require additional clearance areas or T-shaped gaps to affect the appearance, the laptop with the single-sided speaker resonant cavity antenna structure of the present application only needs to open a gap with a maximum width of 2-3mm on its casing. Since the antenna radiation branches are formed on the metal cavity, and the metal cavity is formed on the outer peripheral surface of the speaker cavity, there is no need to reserve additional antenna positions in the laptop, thereby improving the space utilization rate in the laptop. In addition, since the antenna radiation branches are assembled with the single-sided speaker, the human resource costs such as film tearing, assembly, and screwing in the traditional independent assembly of antennas can be reduced.

[0039] The single-sided horn resonant cavity antenna structure of the present application adopts a metal cavity and forms antenna radiation branches on the metal cavity. Therefore, the single-sided horn resonant cavity antenna structure of the present application is provided with a metal cavity. The metal cavity can reflect a part of the electromagnetic wave noise (radio frequency related noise refers to electromagnetic wave noise), reduce the propagation of radio frequency noise, so that the structure of the present application can effectively shield the system noise, thereby reducing the cost of reducing radio frequency noise.

[0040] In one embodiment, the metal cavity 2 can be implemented in any of the following ways:

[0041] The first type is that the metal cavity 2 is a layer of metal coating formed on the outer peripheral surface of the speaker cavity 11. For example, the antenna radiation branches are painted on a non-metallic area on one side of the speaker cavity 11 by laser engraving or printing in accordance with a pre-set pattern, and then a metal coating is also formed on the other outer peripheral surfaces of the speaker cavity 11 by laser engraving or printing, so that a metal cavity with antenna radiation branches is formed on the entire outer peripheral surface of the speaker cavity 11.

[0042] The second type, such as Figure 3-7 As shown, the metal cavity 2 is a layer of flexible circuit board 9 attached to the outer peripheral surface of the speaker cavity 11; wherein the flexible circuit board 9 includes a metal foil and a back adhesive provided on one side of the metal foil, and the metal foil is attached to the outer peripheral surface of the speaker cavity 11 through the back adhesive. wherein the metal foil can be copper foil. The speaker cavity is made of non-metallic material.

[0043] For example, the antenna radiation branch 3 is integrally formed on the flexible circuit board 9 , so that when the flexible circuit board is adhered to the outer peripheral surface of the speaker cavity 11 , the antenna radiation branch 3 can be integrally formed on the metal cavity 2 .

[0044] Specifically, a flexible circuit board 9 adapted to the volume and shape of the speaker cavity 11 can be prepared first, and then the antenna radiation branch 3 can be engraved on a complete flexible circuit board 9, so that the antenna radiation branch 3 and the flexible circuit board 9 are an integrated structure, such as Figure 7 As shown, a avoidance opening 21 and a lug avoidance opening 22 are opened on the flexible circuit board 9, and then the flexible circuit board 9 is adhered to the outer peripheral surface of the speaker cavity 11 by using adhesive, avoiding the speaker diaphragm 12 and the lug position, thereby forming a layer of metal cavity 2 on the outer peripheral surface of the speaker cavity 11, and then forming an antenna radiation branch 3 on the metal cavity 2 at a side position of the speaker cavity 11. Among them, the metal cavity 2 is respectively provided with a lug avoidance opening 22 at the lug position of the single-sided speaker, so as to expose the lug on the single-sided speaker to the outside. In addition, the metal cavity 2 is also provided with a small opening at the position of the speaker electronic wire 13, so that the speaker electronic wire 13 is exposed to the outside ( Figure 6-7 For example, the size of the formed metal cavity is 60*30.4*9.10 mm in length, width and height.

[0045] In one embodiment, Figure 3-6 As shown, the single-sided horn resonant cavity antenna structure of the present application also includes a feeding point 4 and a grounding point 6. The feeding point 4 is arranged on the antenna radiation branch 3, and the feeding point 4 is used to connect to the core of the cable 5 so as to be connected to the network card through the cable 5 for transmitting electrical signals; the grounding point 6 is arranged on the antenna radiation branch 3, and the grounding point 6 is used to connect to the shielding layer of the cable 5.

[0046] For example, Figure 8As shown, the cable 5 includes an inner conductor 51, an insulator 52, an outer conductor 53 and a sheath 54, wherein the inner conductor 51 serves as the core of the cable 5, the inner conductor 51 is made of silver-plated copper-clad steel wire, the insulator 52 is wrapped around the inner conductor 51, the insulator material is polytetrafluoroethylene (PTFE), the outer conductor 53 is coated on the outside of the insulator 52, the outer conductor 53 material is tin-dipped copper wire braiding, the outer conductor 53 serves as a shielding layer, the sheath 54 is coated on the outside of the outer conductor 53, and the sheath 54 material is polytetrafluoroethylene (FEP). Therefore, the feeding point 4 is used to connect to the inner conductor 51 of the cable 5, so as to connect to the network card through the cable, and to transmit electrical signals. The grounding point 6 is used to connect to the outer conductor 53 of the cable 5.

[0047] Among them, the network card, namely the Wlan module (wireless LAN module), is connected to the antenna through a cable. When the wireless LAN module and the structure of the present application are integrated and applied to electronic devices, such as laptop computers, for the speaker, we consider the frequency to be applied, which is also the audio range that can be heard by the human ear in the range of 20-20KHz, and the frequency of the wireless LAN module is above 2.4GHz, which is far away from the application frequency of the speaker and will not cause interference.

[0048] In one embodiment, Figure 2-3 As shown, the single-sided horn resonant cavity antenna structure of the present application further includes a conductive foam 7, and a plurality of conductive foams 7 are provided. The plurality of conductive foams 7 are respectively arranged on the surface of the metal cavity 2 and are arranged to avoid the antenna radiation branches 3.

[0049] In order to make the single-sided horn resonant cavity antenna structure of the present application contact well with the metal casing of the electronic device, it is necessary to apply conductive foam on the metal cavity. The function of the conductive foam is to make the single-sided horn resonant cavity antenna structure of the present application contact well with the metal casing, thereby improving the performance and stability of the single-sided horn resonant cavity antenna structure. Fig. 9 As shown, the conductive foam is in contact with the periphery of the gap opened in the metal casing, so that the metal cavity is connected to the metal casing and grounded through the conductive foam.

[0050] According to an embodiment of the present disclosure, the present application also provides an electronic device, comprising a single-sided horn resonant cavity antenna structure in any one of the above embodiments.

[0051] The electronic device with a single-sided speaker resonant cavity antenna structure can simultaneously meet the functions of the speaker and the antenna, and because the antenna radiation branch is designed together with the single-sided speaker, it can reduce the human resource costs of film tearing, assembly, screw fixing, etc. in the current traditional antenna assembly process. It also saves the antenna installation space in the current electronic device and improves the space utilization inside the housing of the electronic device.

[0052] The single-sided horn resonant cavity antenna structure of the present application is applied to electronic devices. Since the structure of the present application is less affected by the environment of the entire machine, after the structure of the present application is debugged, it can be applied to multiple models without customized debugging for different models.

[0053] In one embodiment, Fig. 9 As shown, the electronic device of the present application is provided with a gap 81 for antenna radiation, and the electronic device is also provided with a sealing member for sealing the gap 81, and the material of the sealing member is a non-metallic material.

[0054] For example, Fig. 9 As shown, the electronic device includes a casing 8 made of metal material, and a conductive foam 7 is provided on the single-sided speaker resonant cavity antenna structure. There are multiple conductive foams 7, and the multiple conductive foams 7 are respectively arranged on the surface of the metal cavity and are arranged to avoid antenna radiation branches. The single-sided speaker resonant cavity antenna structure is in contact with the casing 8 made of metal material through the conductive foam 7.

[0055] For example, the electronic device of the present application includes but is not limited to a laptop computer. Taking a laptop computer as an example, a gap 81 of no more than 1 mm is provided in the housing 8 of the laptop computer for antenna radiation, and a sealing member is provided on the gap to seal the gap.

[0056] For example, the gap on the laptop can be closed by any of the following methods:

[0057] The first one is that a plastic film is pasted on the gap 81 of the shell 8 of the notebook computer. The model of the plastic film is KLX FRPC-1860. The plastic film is made of the same material as the plastic film pasted on the gap of the speaker on the existing notebook computer.

[0058] The second method is to bond the metal casing to the plastic to seal the gap 81 in the casing.

[0059] The third method is to combine the metal housing with plastic by insert molding to seal the gap 81 at the housing 8. Of course, other non-metallic auxiliary materials that meet safety requirements can also be used to seal the gap 81.

[0060] It should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present disclosure, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0061] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside",

[0062] The directions or positional relationships indicated by "clockwise", "counterclockwise", etc. are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present application and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present application.

[0063] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0064] Furthermore, those skilled in the art may combine and associate different embodiments or examples and features of different embodiments or examples described in this specification without mutual contradiction.

[0065] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A single-sided speaker resonant cavity antenna structure, comprising a single-sided speaker, wherein the single-sided speaker has a speaker cavity and a speaker diaphragm, characterized in that: Also includes, A metal cavity, wherein the metal cavity is formed on the outer peripheral surface of the speaker cavity, and the metal cavity has an escape opening so that the speaker diaphragm is exposed to the outside; The antenna radiation branch is used for radiating signals outwards, and the antenna radiation branch is formed on the metal cavity.

2. The single-sided horn resonant cavity antenna structure according to claim 1, characterized in that: The metal cavity is a layer of metal coating formed on the outer peripheral surface of the speaker cavity.

3. The single-sided horn resonant cavity antenna structure according to claim 2, characterized in that: The metal coating is formed on the outer peripheral surface of the speaker cavity by laser engraving or printing.

4. The single-sided horn resonant cavity antenna structure according to claim 1, characterized in that: The metal cavity is a layer of flexible circuit board attached to the outer peripheral surface of the speaker cavity; wherein the flexible circuit board includes metal foil, and the metal foil is attached to the outer peripheral surface of the speaker cavity.

5. The single-sided horn resonant cavity antenna structure according to claim 4, characterized in that: The antenna radiation branch is formed integrally on the flexible circuit board, so that when the flexible circuit board is adhered to the outer peripheral surface of the speaker cavity, the antenna radiation branch can be formed integrally on the metal cavity.

6. A single-sided horn resonant cavity antenna structure according to any one of claims 1 to 5, characterized in that: It also includes a feeding point, which is arranged on the antenna radiation branch and is used to connect with the core of the cable so as to be connected with the network card through the cable.

7. The single-sided horn resonant cavity antenna structure according to claim 6, characterized in that: It also includes a grounding point, which is arranged on the antenna radiation branch and is used to connect to the shielding layer of the cable.

8. A single-sided horn resonant cavity antenna structure according to any one of claims 1 to 5, characterized in that: It also includes conductive foam, which is arranged on the surface of the metal cavity and avoids the antenna radiation branches.

9. An electronic device, characterized in that: A single-sided horn resonant cavity antenna structure comprising any one of claims 1-8.

10. The electronic device according to claim 9, characterized in that: The electronic device is provided with a gap for antenna radiation, and the electronic device is also provided with a sealing member for sealing the gap, and the sealing member is made of non-metallic material.

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