Horn device

Abstract

A loudspeaker device includes a loudspeaker body and an antenna. The loudspeaker body has a vibrating plate and a metal back plate opposite to the vibrating plate. The antenna has a radiating body and a ground conductor. The radiating body is spaced apart from the metal back plate by a distance, and the ground conductor is electrically connected to the metal back plate and the radiating body. In this way, the antenna is integrated in the loudspeaker device. The antenna is arranged on the back of the loudspeaker body, and the radiating body does not directly contact the metal back plate. This can reduce the occurrence of electromagnetic interference, thereby ensuring stable signal transmission.

Description

Technical Field

[0001] This utility model relates to a horn device, and more particularly to a horn device with an integrated antenna. Through structural improvements, the antenna body is integrated into the horn device, and electromagnetic interference can be avoided. Background Technology

[0002] In wireless speaker devices, a current flows through the coil, causing the air to vibrate and produce sound. To avoid electromagnetic interference, the antenna used for transmitting and receiving signals needs to be positioned away from the speaker device. Therefore, antennas are typically installed in a clearance area to prevent electromagnetic interference with the speaker coil. This configuration ensures that the antenna has good signal radiation characteristics, improving the stability and efficiency of wireless communication.

[0003] Taiwan Patent Publication No. M422838 discloses a horn module comprising a housing, a horn device, and an antenna. The horn device is housed within the housing, while the antenna is positioned away from the horn device and formed along the contour of the housing on its outer surface. This patent reduces electromagnetic interference by increasing the distance between the antenna and the horn device; however, this structural design requires a large housing to accommodate the antenna.

[0004] However, current electronic products are designed primarily to reduce size, resulting in limited internal space and constraints on their dimensions. Therefore, the old method of keeping antennas away from the speaker is no longer suitable for modern electronic products. When space is limited, antennas must be placed close to the speaker or other metal components. However, the electromagnetic field generated by the speaker can affect the antenna's signal transmission quality, causing electromagnetic interference. Furthermore, direct contact between the antenna and metal components can also reduce the antenna's radiation efficiency.

[0005] Therefore, the inventors considered how to provide a horn device that can integrate an antenna in a limited space, so that the antenna can effectively avoid electromagnetic interference with the horn device while meeting the transmission requirements of wireless signals. Utility Model Content

[0006] The technical problem to be solved by this utility model is that the existing horn devices still have many shortcomings. It provides a horn device with an antenna, improves the connection between the antenna body and the horn device, so that the entire horn device can accommodate the antenna body in a small volume, and avoids electromagnetic interference.

[0007] To achieve the above objectives, this utility model provides a loudspeaker device, comprising:

[0008] A loudspeaker body, having a diaphragm and a metal base plate, the metal base plate facing away from the diaphragm; and

[0009] An antenna has a radiating body and a grounding conductor. The radiating body faces the metal base plate with a gap between them, and the grounding conductor is electrically connected to the metal base plate and the radiating body.

[0010] In the aforementioned horn device, the grounding conductor and the radiating body are located on the same side of the metal base plate.

[0011] In the aforementioned horn device, the grounding conductor has a bent structure.

[0012] In the aforementioned horn device, the radiating body includes a feed arm and at least one radiating arm. The feed arm is electrically connected to the grounding conductor and then electrically connected to an antenna feed line. The at least one radiating arm is electrically connected to the feed arm. The antenna feed line is located between the feed arm and the metal base plate.

[0013] The aforementioned horn device includes a horn body comprising a metal housing and a metal base plate, the metal base plate being assembled to the metal housing, and the vibrating plate being located within the metal housing.

[0014] In the aforementioned horn device, the length and width of the radiating body are less than or equal to the length and width of the horn body.

[0015] The beneficial effects of this utility model are as follows:

[0016] The antenna of this invention is integrated into the horn device. The metal base plate of the horn body is electrically connected to the grounding conductor of the antenna, and then electrically connected to the radiating body through the grounding conductor. Because the antenna is only partially connected to the grounding conductor, the antenna appears suspended relative to the horn body. The antenna of this invention is set parallel to the horn body, eliminating the need for an additional clearance area around the horn body. Therefore, the horn device can be kept within a certain size. Furthermore, since the antenna is not directly attached to the metal base plate of the horn body, electromagnetic interference is reduced, allowing both the antenna and the horn body to operate normally.

[0017] The detailed structure, features, assembly, and usage of the horn device provided by this utility model will be described in the subsequent detailed description of the embodiments. However, those skilled in the art should understand that such detailed descriptions and the specific embodiments listed for implementing this utility model are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Attached Figure Description

[0018] Figure 1 This is a perspective view of an embodiment of the present invention, showing its application in an electronic device;

[0019] Figure 2 This is a perspective view of an embodiment of the present utility model;

[0020] Figure 3 This is a perspective view of an embodiment of the present invention, showing... Figure 2 Another perspective;

[0021] Figure 4 This is a side view of an embodiment of the present invention, illustrating the position of the spacing; and

[0022] Figure 5 This is a bottom view of an embodiment of the present invention, showing the structure of the antenna.

[0023] Among them, the attached reference numerals

[0024] 10: Horn device

[0025] 20: Speaker body

[0026] 21: Metal casing

[0027] 22: Metal base plate

[0028] 23: Vibrating plate

[0029] 24: Speaker Module

[0030] 30: Antenna

[0031] 31: Radiation Body

[0032] 311: Feed arm

[0033] 312: Extending Arm

[0034] 313: First Radiation Arm

[0035] 314: Second Radiation Arm

[0036] 32: Grounding conductor

[0037] 321: Antenna connector

[0038] 322: Housing connection end

[0039] 60: Antenna feeder

[0040] 70: Casing

[0041] D: Spacing Detailed Implementation

[0042] The applicant first clarifies that in the embodiments and drawings described below, the same reference numerals denote the same or similar elements or their structural features. It should be noted that the elements and structures in the drawings are for illustrative purposes and are not drawn to scale or in quantity; features of different embodiments may be used interchangeably if feasible in practice. Secondly, when it is stated that an element is disposed on another element, it means that the aforementioned element is directly disposed on the other element, or indirectly disposed on the other element; that is, one or more other elements are disposed between the two elements. Conversely, when it is stated that an element is "directly" disposed on another element, it means that no other elements are disposed between the two elements.

[0043] Please see Figures 1 to 4 The speaker device 10 of this utility model mainly includes a speaker body 20 and an antenna 30. In actual use, the speaker device 10 is installed in the housing 70 of an electronic device, such as a smartphone, laptop, tablet computer or other smart wearable device, and the speaker device 10 is used to provide sound output.

[0044] The speaker body 20 includes a metal housing 21 and a metal base plate 22. The metal housing 21 and the metal base plate 22 can be made of, for example, aluminum alloy, titanium alloy, magnesium alloy, or stainless steel. The metal housing 21 has an opening that extends through the top and bottom surfaces of the metal housing 21, and a frame is provided at the opening of the metal housing 21. The frame can be made of, for example, rubber, foam, or silicone. A diaphragm 23 is then assembled onto the frame, and the diaphragm 23 is surrounded by the metal housing 21. The metal base plate 22 can be rectangular in shape, for example, serving as the back shell of the speaker body 20, and is positioned away from the diaphragm 23. The metal base plate 22 is assembled onto the bottom surface of the metal housing 21, and for example, it can have interlocking structures at both ends to snap onto the metal housing 21, and the metal base plate 22 and the metal housing 21 together form an accommodating space.

[0045] A speaker module 24 is disposed in the space between the metal housing 21 and the metal base plate 22. The speaker module 24 mainly includes a voice coil and a magnetic element. The voice coil is a coil wound with copper wire. When current passes through the voice coil, it generates an electromagnetic field. The fixed magnetic field of the magnetic element interacts with the electromagnetic field of the voice coil, which generates vibration to drive the diaphragm 23 to produce sound.

[0046] The antenna 30 has a radiating body 31 and a grounding conductor 32, both located on the same side of the metal base plate 22. The grounding conductor 32 is a bent metal plate. One end of the grounding conductor 32 is an antenna connection terminal 321, and the other end is a housing connection terminal 322. The grounding conductor 32 is electrically connected to the radiating body 31 through the antenna connection terminal 321, and then electrically connected to the metal base plate 22 of the horn body 20 through the housing connection terminal 322. The grounding conductor 32 utilizes the metal base plate 22 as the grounding part of the radiating body 31, allowing the antenna 30 to have a complete radiation loop, thus ensuring the resonant stability of the antenna 30. The location where the housing connection terminal 322 of the grounding conductor 32 is electrically connected to the metal base plate 22 can be part of any side of the metal base plate 22.

[0047] The radiating body 31 of the antenna 30 is locally connected to the antenna connection terminal 321 of the grounding conductor 32. In this way, the radiating body 31 is arranged parallel to the metal base plate 22 and electrically connected to the metal base plate 22 through the grounding conductor 32. A gap D is formed between the radiating body 31 and the metal base plate 22, causing the radiating body 31 to appear suspended relative to the metal base plate 22. Because there is a distance between the radiating body 31 and the metal base plate 22, the antenna 30 will not be affected by the metal housing 21 and the metal base plate 22 during signal transmission and reception, thus preventing radiation efficiency attenuation and interference with the operation of the speaker module 24.

[0048] In this embodiment, the radiating body 31 is connected to the antenna connection terminal 321 of the grounding conductor 32 only on one side. However, this invention does not limit the area where the radiating body 31 is electrically connected to the grounding conductor 32. It is also possible to connect the entire side of one side of the radiating body 31 to the grounding conductor 32, or to connect the two adjacent sides of the radiating body 31 to the grounding conductor 32. Both of these can constitute a partial connection between the radiating body 31 and the grounding conductor 32.

[0049] Please also refer to Figure 5 The radiating body 31 is rectangular with multiple cutouts, forming a feed arm 311 and at least one radiating arm. This embodiment includes multiple radiating arms, which are defined as an extension arm 312, a first radiating arm 313, and a second radiating arm 314. One end of the extension arm 312 is electrically connected to the antenna connection terminal 321 of the ground conductor 32. Extending from this end to both sides, it forms two branches, one of which extends along the side of the radiating body 31, and the other extends toward the feed arm 311 and is electrically connected to one end of the feed arm 311. Several bends are formed between this branch and the feed arm 311, giving the extension arm 312 a meandering shape.

[0050] The feed arm 311 is located near the center of the radiating body 31, serving as the part of the antenna 30 that receives or transmits wireless signals. The end of the feed arm 311 not connected to the extension arm 312 extends to both sides, forming two branches: one branch is the first radiating arm 313, and the other is the second radiating arm 314. Both the first radiating arm 313 and the second radiating arm 314 are perpendicular to the feed arm 311 and are located on the side of the radiating body 31 away from the extension arm 312. This invention does not limit the shape of the first radiating arm 313 and the second radiating arm 314; their shape can be determined according to the radiation mode and resonant frequency of the radiating body 31. In this embodiment, the length and width (e.g., the maximum circumferential outline) of the radiating body 31 are less than or equal to the length and width (e.g., the outer perimeter of the metal base plate) of the speaker body 20 to control the volume of the speaker device 10.

[0051] Antenna feed line 60 is connected to feed arm 311 of radiating body 31, serving as signal transmission channel for antenna 30. One end of antenna feed line 60 extends to the outside of horn device 10 to connect to the circuitry of electronic device, responsible for receiving signals from electronic device and transmitting them to feed arm 311 of antenna 30, or receiving signals from feed arm 311 of antenna 30 and transmitting them to electronic device.

[0052] In summary, the speaker device 10 provided by this utility model has at least the following advantages compared with the prior art:

[0053] 1. The grounding conductor 32 of the speaker device 10 of this utility model directly serves as the connecting element between the metal base plate 22 and the radiating body 31, which enables the antenna 30 to have a complete radiation circuit, and the antenna 30 does not need to be set too far away from the speaker body 20. Therefore, it does not need to occupy other space of the speaker device 10, so that the structure of the speaker device 10 can be controlled in a smaller volume to be suitable for various modern small-volume electronic devices.

[0054] 2. In this utility model, the radiating body 31 of the speaker device 10 is arranged parallel to the metal base plate 22, so that the antenna 30 can be configured in the speaker device 10 without the need for an additional clearance area. Furthermore, a gap D is formed between the radiating body 31 and the metal base plate 22, so that there will be no electromagnetic interference in the signal transmission and reception of the radiating body 31, and the speaker body 20 will not be interfered with by the radiating body 31 during operation, thus meeting the requirements for wireless signal transmission.

[0055] Finally, it must be stated again that the constituent elements disclosed in the foregoing embodiments of this utility model are merely illustrative examples and are not intended to limit the scope of this utility model. Substitutions or variations of other equivalent elements should also be covered by the protection scope of this utility model.

Claims

1. A loudspeaker device, characterized in that, include: A loudspeaker body has a diaphragm and a metal base plate, with the metal base plate facing away from the diaphragm. and An antenna has a radiating body and a grounding conductor. The radiating body faces the metal base plate with a gap between them, and the grounding conductor is electrically connected to the metal base plate and the radiating body.

2. The horn device as described in claim 1, characterized in that, The grounding conductor and the radiating body are located on the same side of the metal base plate.

3. The horn device as described in claim 2, characterized in that, The grounding conductor has a bent structure.

4. The horn device as claimed in claim 1, characterized in that, The radiating body includes a feed arm and at least one radiating arm. The feed arm is electrically connected to the grounding conductor and then electrically connected to an antenna feed line. The at least one radiating arm is electrically connected to the feed arm. The antenna feed line is located between the feed arm and the metal base plate.

5. The horn device as claimed in claim 1, characterized in that, The speaker body includes a metal housing and a metal base plate, the metal base plate being assembled to the metal housing, and the diaphragm being located in the metal housing.

6. The horn device as claimed in claim 1, characterized in that, The length and width of the radiating body are less than or equal to the length and width of the speaker body.

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