Bluetooth watch with FM receiving function

Abstract

The utility model provides a Bluetooth watch with an FM (Frequency Modulation) receiving function, which is characterized in that an FM receiving antenna and a metal connecting terminal are arranged in a watchband and are connected with an FM channel receiving chip in a watch body. Through the setting mode, people can still listen to the radio and know the current situation under the conditions of no WiFi or mobile data and poor outdoor activity network signals; and the Bluetooth watch is small and convenient, is convenient to carry and is suitable for listening to FM broadcast.

Description

Technical Field

[0001] The utility model relates to the technical field of Bluetooth watches, in particular to a Bluetooth watch with an FM receiving function. Background Art

[0002] At present, listening to FM radio with electronic products has gradually attracted the attention of consumers. The FM function does not rely on Internet connection. You can still listen to the radio without WiFi or mobile data. It is especially practical in places where the network signal is poor during outdoor activities. The FM function can keep you updated with current events, music, and talk shows, providing users with a richer user experience. There are two ways to implement the FM function on smartphones on the market: one is to use the APP to realize the radio function through networking or to obtain the broadcast through data traffic; the other is to receive FM signals through an external antenna (such as headphones). Electronic watches are small and convenient, easy to carry, and are the best products for listening to FM radio in the above scenarios. However, the FM radio frequency in my country is 88MHz~108MHz. According to the calculation of the antenna length based on 1 / 4 wavelength of free space, the length of the FM radio antenna is required to be 69-85cm. If the length is too long, the antenna cannot be set in the watch.

[0003] Therefore, there are two difficulties for smart watches when receiving FM signals: first, the Bluetooth version of the watch does not have an Internet connection function and cannot realize the radio function through E-SIM traffic. When the Bluetooth watch leaves the mobile phone hotspot or WiFi, it cannot receive real-time information; second, although Bluetooth headsets are easy to carry in scenarios such as sports, and current mainstream watch products support Bluetooth headsets but not wired headsets, Bluetooth headsets cannot meet the same antenna length as wired headsets and cannot be used as antennas to receive FM.

[0004] Therefore, it is urgent to invent a Bluetooth watch with FM receiving function to effectively solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a Bluetooth watch with FM receiving function, so that the radio can still be listened to through the Bluetooth watch without WiFi or mobile data.

[0006] To achieve the above object, the utility model provides a Bluetooth watch with FM receiving function, comprising: a watch body and a watch strap;

[0007] The watch body is provided with an FM channel receiving chip; the side wall of the watch body is provided with a connecting groove;

[0008] The watch strap comprises an FM receiving antenna, a connecting shaft and a metal connecting terminal, wherein the FM receiving antenna is arranged inside the watch strap, the metal connecting terminal is arranged on the connecting shaft, the connecting shaft is arranged on the watch strap, and the FM receiving antenna is connected to the metal connecting terminal;

[0009] When the watch strap is connected to the watch body via the connecting shaft, the metal connecting terminal is connected to the FM channel receiving chip signal via the connecting groove.

[0010] Furthermore, it is characterized in that the connecting groove comprises a first side wall, a second side wall and a third side wall which are sequentially connected end to end; the first side wall and the third side wall are arranged parallel to each other.

[0011] Furthermore, the first side wall and the third side wall are insulators, and the second side wall is a conductor.

[0012] Furthermore, the FM channel receiving chip is provided with a PCB with a spring, and the spring of the PCB is connected to the second side wall.

[0013] Furthermore, the FM receiving antenna is a multi-bending structure and is arranged in the watch strap.

[0014] Furthermore, the multiple bending structure may be a serpentine bending structure.

[0015] Furthermore, the width of the FM receiving antenna is in the range of 0.4-0.6 mm, and the spacing between the lines of the multi-bending structure follows the 3W principle.

[0016] Furthermore, the length of the FM receiving antenna is in the range of 60-80 cm.

[0017] Furthermore, the watch strap includes a first watch strap and a second watch strap, the first watch strap is provided with the FM receiving antenna; the second watch strap is provided with an antenna auxiliary line.

[0018] Furthermore, the antenna auxiliary line is a multiple-bending structure, the width of the antenna auxiliary line is in the range of 0.4-0.6 mm, and the spacing between the lines of the multiple-bending structure follows the 3W principle.

[0019] Furthermore, the FM channel receiving chip is an independent FM chip or a BT / WiFi / FM integrated chip.

[0020] Compared with the prior art, the beneficial effects of the utility model are mainly reflected in: providing a Bluetooth watch with FM receiving function, setting an FM receiving antenna and a metal connecting terminal in the watch strap, and connecting with the FM channel receiving chip in the watch body. Through this setting method, people can still listen to the radio and learn about current affairs without WiFi or mobile data, and when the network signal is poor during outdoor activities; and the Bluetooth watch is small, convenient and easy to carry, and is the preferred product for listening to FM radio. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the disassembled structure of a Bluetooth watch with FM receiving function in one embodiment of the utility model;

[0022] Figure 2 This is a schematic diagram of the overall structure of a Bluetooth watch with FM receiving function according to an embodiment of the present utility model;

[0023] Figure 3 This is a schematic diagram of the connection between the metal connecting terminal and the metal groove in one embodiment of the utility model;

[0024] Figure 4 This is a schematic diagram of an FM receiving antenna and an antenna auxiliary line installed in a watch strap in one embodiment of the utility model.

[0025] In the figure, 1. watch body; 11. connecting groove; 111. first side wall; 112. second side wall; 113. third side wall; 2. watch strap; 21. first watch strap; 211. FM receiving antenna; 212. metal connecting terminal; 213. connecting shaft; 22. second watch strap; 221. antenna auxiliary line. DETAILED DESCRIPTION

[0026] The following is a more detailed description of the Bluetooth watch with FM receiving function of the utility model in conjunction with the accompanying drawings, which shows the preferred embodiment of the utility model. It should be understood that those skilled in the art can modify the utility model described herein and still achieve the beneficial effects of the utility model. Therefore, the following description should be understood as being widely known to those skilled in the art and not as a limitation to the utility model.

[0027] The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the accompanying drawings are in very simplified form and in non-precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0028] like Figure 1 and Figure 2As shown, in this embodiment, a Bluetooth watch with FM receiving function is provided, including: a watch body 1 and a watch strap 2.

[0029] Specifically, the watch body 1 is provided with an FM channel receiving chip for receiving and adjusting the FM signal to be received; the side wall of the watch body 1 is provided with a connecting groove 11 for connecting with the watch strap 2; the watch strap 2 includes an FM receiving antenna 211, a connecting shaft 213 and a metal connecting terminal 212, the FM receiving antenna 211 is arranged inside the watch strap 2, the metal connecting terminal 212 is arranged on the connecting shaft 213, the connecting shaft 213 is arranged on the watch strap 2, and the FM receiving antenna 211 is connected to the metal connecting terminal 212; when the watch strap 2 is connected to the watch body 1 through the connecting shaft 213, the metal connecting terminal 212 is connected to the FM channel receiving chip signal through the connecting groove 11, and the FM channel receiving chip has a receiving module, which can perform frequency tuning on the received FM signal.

[0030] The watch proposed by the utility model not only has the conventional Bluetooth connection function, but also has the FM reception function, so that the user can listen to the radio at any time. It has a built-in antenna to ensure stable and clear signal reception. The watch structure is cleverly designed, and the connection between the strap 2 and the watch body can ensure efficient communication between the antenna and the receiving chip. In addition, the versatility of the watch not only improves the user experience, but also reduces the dependence on mobile phones through wireless connection. It is particularly suitable for users who like outdoor activities or need to obtain information at any time.

[0031] Specifically, considering the requirements of flexibility and insulation, the material of the strap 2 can be silicone.

[0032] In this embodiment, if Figure 3As shown, the connection groove 11 includes a first side wall 111, a second side wall 112 and a third side wall 113 connected end to end in sequence; the first side wall 111 and the third side wall 113 are arranged parallel to each other. The first side wall 111 and the third side wall 113 are insulators, and the material can be plastic; the second side wall 112 is a conductor, and can be a metal material. The third wall 113 can be directly electrically connected to the metal connection terminal 212 by plugging, thereby realizing the transmission of the FM signal from the FM receiving antenna 211 to the metal connection terminal 212, then to the third wall 113, and finally to the FM channel receiving chip. The use of this structure not only simplifies the internal structure of the watch, but also improves the stability of the connection. The first side wall 111 and the third side wall 113 made of insulating material ensure the safety of the circuit and avoid short circuit and interference. The second side wall 112 uses a conductive material, such as metal, to ensure the efficiency and reliability of signal transmission. Through this ingenious structural design, the FM signal can be quickly and losslessly transmitted to the receiving chip, greatly improving the performance of the watch. In addition, this plug-in method also facilitates repair and replacement, making the maintenance of the watch more convenient. The overall design not only takes into account functionality, but also durability and user convenience.

[0033] Specifically, in order to make the connection between the watch strap 2 and the watch body 1 more firmly, snap buckles are provided on both ends of the side edges of the connection between the connecting shaft 2 and the watch body 1, and corresponding snap grooves are also provided on both ends of the side edges of the connection between the watch body 1 and the connecting shaft 2. By adding snap buckle designs on both ends of the side edges of the connecting shaft 2, a tighter and firmer connection between the watch strap and the watch body is ensured. These snap buckles can perfectly fit with the snap grooves on the watch body 1, providing additional fixing force to prevent loosening during exercise or daily use. The combination of snap buckles and snap grooves not only enhances the stability of the overall structure of the watch, but also facilitates users to install and remove the watch strap, improving the user experience of the watch.

[0034] In a specific example, the FM channel receiving chip is further provided with a PCB with a spring, and the spring of the PCB is connected to the second side wall 112 to achieve electrical transmission of the FM signal.

[0035] Specifically, Figure 1 and Figure 4 As shown, the FM receiving antenna 211 is a multi-bending structure and is arranged in the watch strap 2. More specifically, the FM receiving antenna 211 is arranged in the watch strap 2 in a serpentine manner. The preferred width H1 of the FM receiving antenna 211 arranged in the watch strap 2 is 1.6 cm, and the preferred length H2 is 7 cm. The serpentine design enables the FM receiving antenna 211 to achieve a longer effective length within the limited watch strap space, thereby improving the sensitivity and stability of signal reception.

[0036] Specifically, the line width of the FM receiving antenna 211 is 0.4-0.6mm, preferably, 0.5mm or 0.55mm, and the spacing between the lines of the serpentine routing follows the 3W principle: in order to reduce crosstalk between lines in PCB design, the line spacing should be large enough. When the line center spacing is not less than 3 times the line width, most of the electric fields can be kept from interfering with each other, thereby ensuring the purity and stability of the received signal; the overall length of the FM receiving antenna 211 is in the range of 60-80cm, and this length can further optimize the signal reception effect, so that the antenna can efficiently capture FM signals.

[0037] Specifically, the FM receiving antenna 211 is preferably made of rolled copper, and may also be made of polymer composite materials such as carbon nanotubes. The bendable material enables the FM receiving antenna to achieve a longer effective length within a limited strap space, thereby improving the sensitivity and stability of signal reception.

[0038] In addition, the strap 2 includes a first strap 21 and a second strap 22. The first strap 21 is provided with an FM receiving antenna 211 for receiving FM signals. The second strap 22 is provided with an antenna auxiliary line 221. The length of the antenna auxiliary line 221 needs to be longer than or equal to the FM receiving antenna 211. The purpose of providing the antenna auxiliary line 221 is: based on the principle of symmetrical dipole antenna, the antenna has two radiating arms. Combined with the deformation of the product, one radiating arm is used as the antenna radiator, and the other radiating arm is used as the auxiliary line. To improve the signal reception performance, the auxiliary line needs to be greater than or equal to the antenna, that is, the auxiliary line is the other end of the antenna. The routing form of the auxiliary line is not limited, and the length of the auxiliary line can be extended and the area of ​​the auxiliary line can be increased.

[0039] Furthermore, it is characterized in that the antenna auxiliary line is a multiple-bending structure, and the multiple-bending structure can be a serpentine routing structure; the width range of the antenna auxiliary line width is 0.4-0.6mm, and the spacing between the lines of the multiple-bending structure follows the 3W principle: in order to reduce crosstalk between lines in PCB design, the line spacing should be large enough. When the line center spacing is not less than 3 times the line width, most of the electric fields can be kept from interfering with each other, thereby ensuring the purity and stability of the received signal; bypass the hole position when passing through the perforated position of the strap 2.

[0040] In a specific example, the FM channel receiving chip is an independent FM chip or a BT / WiFi / FM integrated chip.

[0041] In summary, the Bluetooth watch with FM receiving function proposed in this embodiment is provided with an FM receiving antenna and a metal connecting terminal in the watch strap, and connected with the FM channel receiving chip in the watch body. This setting method enables people to listen to the radio and learn about current events even when there is no WiFi or mobile data, or when the network signal is poor during outdoor activities; and the Bluetooth watch is small, convenient and easy to carry, and is the preferred product for listening to FM radio.

[0042] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A Bluetooth watch with FM receiving function, characterized in that: include: Watch body and watch strap; The watch body is provided with an FM channel receiving chip; the side wall of the watch body is provided with a connecting groove; The watch strap comprises an FM receiving antenna, a connecting shaft and a metal connecting terminal, wherein the FM receiving antenna is arranged inside the watch strap, the metal connecting terminal is arranged on the connecting shaft, the connecting shaft is arranged on the watch strap, and the FM receiving antenna is connected to the metal connecting terminal; When the watch strap is connected to the watch body via the connecting shaft, the metal connecting terminal is connected to the FM channel receiving chip signal via the connecting groove.

2. The Bluetooth watch with FM receiving function according to claim 1, characterized in that: The connecting groove comprises a first side wall, a second side wall and a third side wall which are sequentially connected end to end; the first side wall and the third side wall are arranged parallel to each other.

3. The Bluetooth watch with FM receiving function according to claim 2, characterized in that: The first side wall and the third side wall are insulators, and the second side wall is a conductor.

4. The Bluetooth watch with FM receiving function according to claim 3, characterized in that: The FM channel receiving chip is provided with a PCB with a spring sheet, and the spring sheet of the PCB is connected to the second side wall.

5. The Bluetooth watch with FM receiving function according to claim 1, characterized in that: The FM receiving antenna is a multi-bending structure and is arranged in the watch strap.

6. The Bluetooth watch with FM receiving function according to claim 5, characterized in that: The line width of the FM receiving antenna ranges from 0.4 to 0.6 mm.

7. The Bluetooth watch with FM receiving function according to claim 6, characterized in that: The length of the FM receiving antenna is in the range of 60-80 cm.

8. The Bluetooth watch with FM receiving function according to claim 1, characterized in that: The watch strap includes a first watch strap and a second watch strap, wherein the FM receiving antenna is arranged in the first watch strap, and an antenna auxiliary line is arranged in the second watch strap.

9. The Bluetooth watch with FM receiving function according to claim 8, characterized in that: The antenna auxiliary line is a multi-bending structure, and the width of the antenna auxiliary line ranges from 0.4 to 0.6 mm.

10. The Bluetooth watch with FM receiving function according to claim 1, characterized in that: The FM channel receiving chip is an independent FM chip or a BT / WiFi / FM integrated chip.

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