Assembly process method and structure of watch antenna and smart watch

Abstract

The present invention discloses an assembly process method, structure and smart watch of a watch antenna, which relates to the technical field of electronic equipment. The metal ornaments arranged on the watch housing are used as part of the antenna radiator, and the metal ornaments are welded to the welding part of the LDS antenna, so that the radiation range of the antenna radiator can be expanded through the metal ornaments, and the height and clearance of the metal ornaments relative to the watch housing can be increased, thereby improving the radiation performance of the antenna. At the same time, when the smart watch is worn, the metal ornaments as part of the antenna are farther from the user's arm height than the LDS antenna, reducing the influence of the human arm on the high-frequency performance of the antenna. By adopting this method, the various metal ornaments on the watch housing can be used as antenna radiators with different functions, which is conducive to integrating more antennas in other positions of the middle frame of the whole machine and enriching the functions of the watch.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic equipment, and in particular to an assembly process method and structure of a watch antenna and a smart watch. Background Art

[0002] As the functions of smart watches increase, the number of antennas required to be set up in smart watches corresponding to their functions also increases, such as integrated 2G / 3G / 4G communication antennas, 2G / 3G / 4G communication diversity antennas, dual-frequency GPS antennas, WiFi & Bluetooth antennas, etc.

[0003] In order to improve the user experience of various functions of smart watches, the screen size, camera and other hardware specifications of watches have also been increased accordingly. In addition, in order to improve the appearance and structural strength of watches, the number of appearance parts of watch products has also increased accordingly. Since some appearance parts of smart watches (such as camera decorations, power button, speaker sound hole decorations, etc.) are mostly made of metal materials, the antenna performance will be affected by the metal materials. Metal materials may even shield the antenna signal, making it impossible to set the antenna in the position corresponding to the appearance part in the smart watch, encroaching on the antenna clearance area, especially multi-band antennas, which have higher clearance requirements for antennas, which brings many restrictions to the setting of antennas in smart watches and increases the difficulty of structural design of watches.

[0004] In the field of children's phone watches, in order to prevent the watch from falling or bumping and damaging the antenna, a matching plastic material is generally used as the casing on the middle frame of the watch. In addition, considering the appearance, the antenna is generally covered with rubber for protection. This setting method will also deteriorate the performance of the antenna. Summary of the invention

[0005] One of the purposes of an embodiment of the present invention is to provide an assembly process method for a watch antenna, which uses the metal ornaments on the watch case as part of the antenna radiator to solve technical problems such as the weak performance of the smart watch antenna.

[0006] The second purpose of the embodiment of the present invention is to provide an assembly structure of a watch antenna, electrically connecting the metal ornaments with the LDS antenna, thereby solving the technical problem of weak antenna performance existing in the prior art.

[0007] The third purpose of the embodiment of the present invention is to provide a smart watch, which is conducive to integrating more antennas into the smart watch by adopting the above-mentioned assembly structure of the watch antenna.

[0008] To achieve one of the above purposes, the present invention adopts the following technical solutions:

[0009] In a first aspect, a method for assembling a watch antenna is provided, comprising the following steps:

[0010] S10, processing a packaging groove on the outer surface of the watch case, the packaging groove comprising a first receiving groove, the groove bottom of the first receiving groove forming a first preset position, and arranging the LDS antenna to at least partially expose the outer surface of the watch case from the first preset position, and the exposed portion of the LDS antenna forming a welding portion;

[0011] S20, the packaging groove further includes a second receiving groove, the second receiving groove is processed on the outer surface of the watch housing, the groove bottom of the second receiving groove forms a second preset position adjacent to the first preset position, and the depth of the first receiving groove is less than the depth of the second receiving groove;

[0012] S30, a welding ear is provided on the metal ornament, and the welding ear is placed at a second preset position so that the metal ornament is arranged close to the welding portion, and the welding surface of the welding ear located in the second receiving groove is flush with the surface of the welding portion located in the first receiving groove;

[0013] S40, applying solder paste between the metal decorative part and the welding part, and both the metal decorative part and the welding part are in contact with the solder paste;

[0014] S50, heating the solder paste to solidify it, so that the metal ornament is connected to the LDS antenna through the solder paste, so as to form an antenna radiator on the outer surface of the watch case.

[0015] As an optional implementation, in step S30, an adhesive layer is provided at the second preset position or on the metal ornament, and then the metal ornament is placed at the second preset position so that the metal ornament is bonded and fixed at the second preset position through the adhesive layer.

[0016] As an optional implementation, in S40, before applying the solder paste, the soldering point positions and the soldering parts of the metal ornaments are subjected to a gold plating process.

[0017] As an optional implementation, the method further includes the steps of:

[0018] S60, providing a packaging layer on the welding point position and the welding part of the metal decorative part, so that the welding point position and the welding part of the metal decorative part are sealed by the packaging layer.

[0019] As an optional implementation, the encapsulation layer is formed by curing halogen-free glue.

[0020] In order to achieve the second of the above-mentioned objectives, the present invention adopts the following technical solutions:

[0021] In a second aspect, an assembly structure of a watch antenna is provided, comprising a watch case, wherein the outer surface of the watch case is provided with a first receiving groove and a second receiving groove, the depth of the first receiving groove is less than the depth of the second receiving groove, and the groove bottoms of the first receiving groove and the groove bottoms of the second receiving groove are respectively formed with adjacent first preset positions and second preset positions;

[0022] The LDS antenna is disposed at the first preset position and at least partially exposed from the outer surface of the watch housing to form a welding portion;

[0023] A metal ornament is arranged on the outer surface of the watch case, and a welding ear is provided on the metal ornament. The welding ear is arranged at the second preset position and is flush with the welding portion. The welding ear is arranged close to the welding portion and welded to the welding portion, so that the metal ornament is electrically connected to the LDS antenna to form an antenna radiator arranged on the outer surface of the watch case.

[0024] As an optional implementation, packaging glue is poured into the packaging groove, and the packaging glue completely covers the welding ear and the welding part, so that the packaging glue forms a packaging layer for sealing the welding ear and the welding part after curing.

[0025] As an optional implementation, the welding ear is bonded and fixed to the bottom of the packaging groove by an adhesive layer.

[0026] As an optional implementation, the depth of the first accommodating groove is smaller than the depth of the second accommodating groove.

[0027] As an optional implementation, the welding surface of the welding ear is flush with the surface of the welding portion.

[0028] In order to achieve the third of the above objectives, the present invention adopts the following technical solutions:

[0029] According to a third aspect, a smart watch is provided, comprising the assembly structure of the watch antenna as described above; the watch case has a built-in mainboard, and the mainboard is provided with an antenna matching circuit electrically connected to the LDS antenna; the watch case has a mounting hole extending therethrough; the metal ornament is provided with an avoidance hole, and when the metal ornament is arranged on the watch case, the avoidance hole is arranged opposite to the mounting hole; a camera is arranged in the watch case, and the lens of the camera is arranged facing the mounting hole and the avoidance hole.

[0030] The beneficial effects of the present invention are as follows: the assembly process method of the watch antenna utilizes the metal ornament arranged on the outer surface of the watch case as a part of the antenna radiator, and is welded with the LDS antenna exposed on the outer surface of the watch case. The metal ornament, as a decorative component of the smart watch, has a certain thickness and width, and generally part of the metal protrudes out of the surface of the watch case, so that the antenna utilization area is larger and the performance of the antenna is improved. Compared with the conventional LDS antenna arranged on the watch case, the height and clearance relative to the watch case are increased, thereby improving the radiation performance of the antenna;

[0031] At the same time, when the smart watch is worn, the metal trim as part of the antenna is farther away from the user's arm height than the LDS antenna, which reduces the impact of the human arm on the high-frequency performance of the antenna;

[0032] As a decorative part of smart watches, metal accessories do not need to consider the encapsulation material. Therefore, there is no problem of the encapsulation material affecting the antenna performance and losing the signal, which further improves the radiation range, stability and other performance of the antenna radiator.

[0033] By adopting this approach, the various metal ornaments on the watch case can be used as antenna radiators with different functions, which is conducive to integrating more antennas in other positions of the middle frame of the entire machine and enriching the functions of the watch. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The present invention is further described in detail below based on the accompanying drawings and embodiments.

[0035] Figure 1 It is a cross-sectional view of the assembly structure of the watch antenna according to an embodiment of the present invention;

[0036] Figure 2 for Figure 1 A magnified view of part A;

[0037] Figure 3 This is a schematic diagram of the structure of the metal ornament according to an embodiment of the present invention;

[0038] Figure 4 1) is a schematic diagram of the assembly structure process of the watch antenna according to the embodiment of the present invention;

[0039] Figure 5 It is a schematic diagram of the assembly structure process 2) of the watch antenna according to the embodiment of the present invention;

[0040] Figure 6 It is a schematic diagram of the assembly structure process 3)-4) of the watch antenna according to the embodiment of the present invention;

[0041] Figure 7 This is a schematic diagram of the assembly structure process 5) of the watch antenna according to an embodiment of the present invention.

[0042] In the figure: 10, watch case; 11, mounting boss; 111, mounting hole; 20, welding part; 30, metal ornament; 31, welding ear; 32, avoidance hole; 40, packaging groove; 41, first accommodating groove; 411, first preset position; 42, second accommodating groove; 421, second preset position; 43, adhesive layer; 44, packaging layer; 45, solder paste. DETAILED DESCRIPTION

[0043] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention are further described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0044] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0046] In order to improve the antenna performance of smart watches, this embodiment provides an assembly process method for a watch antenna, by utilizing a metal decorative component arranged on the outer surface of the watch case 10 as a part of the antenna radiator, thereby achieving the purpose of increasing the antenna utilization area to improve antenna performance, increase the antenna radiation range, and reduce antenna loss interference.

[0047] The smart watch described in this embodiment has, in addition to the time indication function of a general watch, one or more functions such as reminders (incoming call reminders, memo reminders, etc.), navigation, calibration, monitoring, and interaction. It is generally provided with a screen to display the operation interaction interface of the smart watch, and the screen generally adopts a capacitive touch screen, which is convenient for touch operation of the smart watch through the capacitive touch screen. The display mode of the display screen includes pointers, numbers, images, etc.

[0048] like Figure 1-Figure 2 , Figure 4-Figure 7 As shown, the assembly process of the watch antenna includes the following steps:

[0049] S10 , processing a first preset position 411 on the outer surface of the watch case 10 , setting the LDS antenna to at least partially expose the outer surface of the watch case 10 from the first preset position 411 , and the exposed portion of the LDS antenna forms a welding portion 20 .

[0050] The first preset surface here can be a surface that is integrally formed with the watch case 10 during the injection molding process of the watch case 10, or a surface that matches the shape of the LDS antenna can be processed on the surface of the watch case 10 through milling, grinding and other processes after the watch case 10 is formed. The surface can be a flat surface, a curved surface, a wavy surface, etc. The surface of the first preset position 411 of this embodiment adopts a flat surface, so that when the LDS antenna is attached to the surface of the first preset position 411, it can form a flat state that matches the surface of the first preset position 411.

[0051] It should be noted that the watch case 10 described here can be the middle frame part of the watch. After the watch case 10 is completely processed and assembled, corresponding decorative components are arranged on the outside of the middle frame to cover the exposed parts of electronic components such as antenna components. It can also be the shell of a smart watch, by directly setting decorative components on the shell to cover the wires and electronic components exposed in the shell.

[0052] LDS antennas are different from traditional circuit structure antennas. Ordinary electronic device antennas are generally installed on the device motherboard. The LDS antenna technology is laser direct structuring technology (Laser-Direct-structur-ing). It uses a computer to control the movement of the laser according to the trajectory of the conductive pattern, and projects the laser onto the molded three-dimensional plastic device (watch case 10) to activate the circuit pattern. Simply put (for the design and production of smart watch antennas), on the molded plastic shell, laser laser technology is used to directly plate the shell to form a metal antenna pattern. The LDS antenna is a circuit pattern activated on the outer surface of the watch case 10 using laser direct structuring technology, and the antenna feed point of the LDS antenna is electrically connected to the motherboard inside the smart watch. This type of antenna has low cost, good production consistency, high performance stability and is easy to integrate with the smart watch structure.

[0053] S20 , processing a second preset position 421 adjacent to the first preset position 411 on the outer surface of the watch case 10 .

[0054] Preferably, the second preset position 421 is also arranged in a planar structure, which is parallel to the first preset position 411, but can be arranged to be in a state not in the same horizontal plane. The purpose is to match the thickness of the metal ornament 30 and the LDS antenna, and to improve the subsequent welding strength of the metal ornament 30 and the LDS antenna and the compactness of the smart watch as a whole.

[0055] S30 , placing at least a portion of the metal decorative part 30 at the second preset position 421 , so that a portion of the metal decorative part 30 is disposed close to the welding portion 20 .

[0056] The metal ornament 30 body and the watch case 10 can be set with a clearance fit or an interference fit, so that the metal ornament 30 can be detachably or non-detachably set on the watch case 10. When the metal ornament 30 is placed on the watch case 10, part of the metal ornament 30 is close to the welding part 20 to facilitate the subsequent welding of the metal ornament 30 and the LDS antenna, thereby reducing the amount of solder paste 45 used and improving the electrical connection stability between the metal ornament 30 and the LDS antenna.

[0057] S40 , applying solder paste 45 between the metal decoration 30 and the soldering portion 20 , and both the metal decoration 30 and the soldering portion 20 are in contact with the solder paste 45 .

[0058] S50 , heating the solder paste 45 to solidify it, so that the metal ornament 30 is connected to the LDS antenna through the solder paste 45 , so as to form an antenna radiator on the outer surface of the watch case 10 .

[0059] The LDS antenna and metal ornament 30 described in the present process method may be optionally made of copper. Of course, conductive metal materials such as aluminum, iron, and gold may also be used. Copper is a cost-effective metal used in electronic devices. It has good conductivity and low signal attenuation. Therefore, copper is preferably used. Of course, in order to meet the appearance requirements of smart watches, the metal ornament 30 may also be made of other metals, and its surface may be electroplated to improve the appearance.

[0060] When the metal trim 30 is used as an antenna radiator, it can be used for a 2G / 3G / 4G communication antenna, a 2G / 3G / 4G DIV antenna, a GPS-L1 antenna (1.57542GHz) or a GPS-L5 antenna (1.17645GHz). It can also be a WIFI / BT antenna, or a multi-band antenna. In actual production, the application type can be set according to actual needs.

[0061] By implementing the above process method, each metal ornament 30 on the watch case 10 can be used as an antenna radiator with different functions, which is conducive to integrating more antennas in other positions of the entire middle frame and enriching the watch functions. The metal ornament 30 arranged on the outer surface of the watch case 10 is used as a part of the antenna radiator and welded with the LDS antenna exposed on the outer surface of the watch case 10. The metal ornament 30 as a decorative component of the smart watch has a certain thickness and width. Generally, part of the metal protrudes from the surface of the watch case 10, so that the antenna utilization area is larger and the antenna performance is improved. Compared with the conventional LDS antenna arranged on the watch case 10, since the LDS antenna and the metal ornament 30 as a part of the antenna are omnidirectional antennas, sufficient space needs to be left so that the antenna can perform normal signal transmission and reception. Compared with the LDS antenna, the height and clearance of the metal ornament 30 on the watch case 10 are increased, and the clearance area is increased. The influence of the metal parts and electronic devices inside the smart watch on it will be reduced accordingly, and the radiation performance of the antenna will be improved accordingly.

[0062] At the same time, when the smart watch is worn, the metal ornament 30, which is part of the antenna, is farther away from the user's arm height than the LDS antenna, thereby reducing the influence of the human arm on the high-frequency performance of the antenna.

[0063] As a decorative component of a smart watch, the metal ornament 30 does not need to consider the influence of the encapsulating material on its signal. Therefore, there is no problem of the encapsulating material affecting the antenna performance and causing signal loss, which further improves the radiation range, stability and other performance of the antenna radiator.

[0064] The following is a further explanation of the assembly process method of the above-mentioned watch antenna. In order to improve the stability of the metal ornament 30 and the watch case 10, so that the metal ornament 30 is not only stabilized on the watch case 10 by relying on the fixed structure between it and the watch case 10 or welding with the LDS antenna, in step S30, the metal ornament 30 is installed on the watch case 10 and the metal ornament 30 is at least partially placed between the second preset position 421, and an adhesive layer 43 is first set at the second preset position 421 or on the metal ornament 30, and then the metal ornament 30 is placed at the second preset position 421, so that the metal ornament 30 is bonded and fixed to the second preset position 421 through the adhesive layer 43.

[0065] The adhesive layer 43 described here can be formed by curing an adhesive, or can be formed by sticking double-sided tape on the surface of the second preset position 421 or on the part of the metal ornament 30 placed on the second preset position 421. It only needs to be a sticky material that can stick and fix the metal ornament 30 to the surface of the second preset position 421. In this embodiment, AB glue is used as the adhesive layer 43 of the metal ornament 30. After the AB glue and the hardener are successively poured or coated on the surface of the second preset position 421, the metal ornament 30 is partially placed on the second preset position 421. After the AB glue is cured to form the adhesive layer 43, the subsequent process steps can be continued.

[0066] In step S40, the low-temperature solder paste is evenly and smoothly applied to the welding part 20 and the metal decoration part 30, and the low-temperature solder paste is cured by laser to make the above two parts conductive. The melting point of the low-temperature solder paste is lower than that of the ordinary solder paste 45. Since the LDS antenna cannot withstand temperatures of 200°C and above for welding, the use of low-temperature solder paste for the welding process of the LDS and the metal decoration part 30 plays a role in protecting the LDS antenna and avoiding structural damage of the LDS antenna during the welding process, which may result in the metal decoration part 30 being unable to conduct electricity with the smart watch motherboard through the LDS antenna.

[0067] In S40 , before applying the solder paste 45 , the soldering point position of the metal decorative part 30 and the soldering portion 20 are subjected to a gold plating process, so as to improve the soldering strength between the metal decorative part 30 and the LDS antenna while ensuring the processing cost.

[0068] In step S50, the solder paste 45 is heated and cured by laser welding. Laser welding is an efficient and precise welding method that uses a high-energy-density laser beam as a heat source. It has a wide temperature control range and can adapt to welding bodies and solder paste 45 of different materials. That is, laser radiation heats the solder paste 45, so that the solder paste 45 can melt to weld the LDS antenna and the metal trim 30. After cooling, the LDS antenna and the metal trim 30 are conductive.

[0069] Furthermore, since the LDS antenna is laser formed on the watch case 10 using LDS technology, the LDS antenna is very thin and has low strength, and is not suitable for general welding processes. Therefore, the solder paste 45 uses low-temperature solder paste as the welding material between the LDS antenna and the metal ornament 30. The temperature range of laser welding can also be controlled within a temperature range suitable for the LDS antenna and low-temperature solder paste welding, so that the connection between the LDS antenna and the metal ornament 30 is more accurate and more stable.

[0070] This embodiment further includes step S60, in which, after the metal trim 30 is welded to the LDS antenna, a packaging layer 44 is provided on the welding point position of the metal trim 30 and the welding portion 20, so that the welding point position of the metal trim 30 and the welding portion 20 are sealed by the packaging layer 44.

[0071] The encapsulation layer 44 can be formed by curing the encapsulation glue. In the present embodiment, in order to enhance the protection of the encapsulation layer 44 on the solder joint position of the metal trim 30 and the LDS antenna and isolate the contact between the air and the metal trim 30 and the LDS antenna, the encapsulation layer 44 adopts halogen-free glue. The halogen-free glue has excellent flame retardancy and insulation properties and can well encapsulate the welding portion 20 at the first preset position 411 and the second position and the solder joint portion of the metal trim 30, thereby protecting the solder joint position.

[0072] This embodiment also provides an assembly structure of a watch antenna, and the technical problem to be solved is the same as the assembly process method of the watch antenna.

[0073] like Figure 3As shown, the assembly structure of the watch antenna includes a watch case 10 and an LDS antenna disposed on the watch case 10 , wherein the LDS antenna is at least partially exposed from an outer surface of the watch case 10 to form the above-mentioned welding portion 20 . The metal ornament 30 is arranged on the outer surface of the watch case 10. In order to facilitate the welding of the metal ornament 30 and the LDS antenna welding part 20 and improve the stability between the metal ornament 30 and the LDS antenna, a welding ear 31 is provided on the metal ornament 30. In order to improve the connection strength between the welding ear 31 and the welding part 20, the welding ear 31 and the welding part 20 need to be gold-plated. The welding ear 31 of this embodiment is a plate-like strip structure, so that the welding ear 31 can match the surface of the second preset position 421 of the planar structure, so that the welding ear 31 can be stably adhered to the surface of the second preset position 421. One end of the welding ear 31 is connected to the metal ornament 30, and the other end of the welding ear 31 extends in a direction close to the welding part 20 and is welded to the welding part 20. In this embodiment, the structure of the second preset position 421 matches the welding ear 31, and the structure of the first preset position 411 matches the welding part 20, so as to improve the integrity of the appearance of the smart watch. The metal ornament 30 is electrically connected to the LDS antenna to form an antenna radiator arranged on the outer surface of the watch case 10.

[0074] By setting a welding ear 31 on the metal ornament 30, the welding ear 31 is welded to the welding part 20 exposed on the outer surface of the watch case 10, so that the metal ornament 30 is connected to the LDS antenna, so that the metal ornament 30 can be used as a part of the antenna radiator. As a decorative component of the smart watch, the metal ornament 30 has a certain thickness and width, and generally part of the metal protrudes from the surface of the watch case 10, so that the antenna utilization area is larger and the performance of the antenna is improved. Compared with the conventional LDS antenna set on the watch case 10, its height and clearance relative to the watch case 10 are increased, thereby improving the radiation performance of the antenna and achieving the same technical effect as the above-mentioned process method.

[0075] In order to further improve the welding strength and connection stability between the welding ear 31 and the welding part 20, a packaging groove 40 is opened on the watch case 10, and the welding ear 31 and the welding part 20 are both arranged in the packaging groove 40. The packaging groove 40 can facilitate the filling of the packaging glue, and allow the welding ear 31 to be accommodated in the packaging groove 40 to prevent the welding ear 31 from protruding from the surface of the watch case 10. After the packaging is completed, the integrity of the appearance of the smart watch is ensured.

[0076] As mentioned above, packaging glue is poured into the packaging groove 40, and the packaging glue completely covers the welding ear 31 and the welding part 20, so that after the packaging glue is cured, a packaging layer 44 for sealing the welding ear 31 and the welding part 20 is formed. The packaging process is the same as step S60 in the above-mentioned assembly process method of the watch antenna.

[0077] Before the metal ornament 30 is placed on the watch case 10, the packaging groove 40 is used to accommodate the portion of the welding ear 31 or a bonding layer is required to be provided on the welding ear 31. The bonding layer can be formed by curing an adhesive or by pasting with a double-sided tape. Other methods of pasting and fixing the welding ear 31 in the packaging groove 40 can also be used as an alternative. The welding ear 31 is bonded and fixed to the bottom of the packaging groove 40 by an adhesive layer 43, thereby improving the stability of the welding ear 31 in the packaging groove 40.

[0078] Here, the packaging groove 40 includes a first accommodating groove 41 and a second accommodating groove 42. The bottom of the first accommodating groove 41 forms a first preset position 411, and the bottom of the second accommodating groove 42 forms a second preset position 421. Openings that communicate with the outside of the watch case 10 are formed at the upper parts of the first accommodating groove 41 and the second accommodating groove 42, so that the welding ear 31, the adhesive layer, and the packaging layer 44 can enter the packaging groove 40 from the opening.

[0079] The welding portion 20 is arranged at the bottom of the first accommodating groove 41, the second accommodating groove 42 is arranged adjacent to the first accommodating groove 41, and the welding ear 31 is arranged at the bottom of the second accommodating groove 42. In order to allow the welding surface of the welding ear 31 to be as close to the welding portion 20 as possible when the welding ear 31 is placed in the second accommodating groove 42, the depth of the first accommodating groove 41 is less than the depth of the second accommodating groove 42, giving the welding ear 31 a certain sinking space, and trying to ensure that when the welding ear 31 is placed in the second accommodating groove 42, its upper surface as the welding point position is as flush with the welding portion 20 as possible, so as to avoid the low-temperature solder paste from forming a stepped structure when being coated on the welding ear 31 and the welding portion 20, affecting the welding strength and electrical connection stability between the two.

[0080] Preferably, the depth of the second receiving groove 42 is equal to the thickness of the adhesive layer and the welding ear 31, so that the welding ear 31 is attached to the second preset position 421 through the adhesive layer, and the surface level of the welding ear 31 is flush with the level of the welding portion 20. It should be noted here that since the thickness of the LDS antenna formed on the surface of the watch case 10 is very small, the thickness of the LDS is not included in the depth consideration range of the second receiving groove 42. Even if the thickness of the LDS is not included in the calculation range of the second receiving groove 42, when the welding ear 31 is placed in the second receiving groove 42, the upper surface of the welding ear 31 is basically flush with the surface of the welding portion 20.

[0081] The same as the assembly process of the above-mentioned watch antenna, the welding ear 31 and the welding part 20 are connected by low-temperature solder paste welding.

[0082] The following is a specific assembly process of the assembly structure of the watch antenna. Before assembly, the packaging groove 40 has been processed on the surface of the watch case 10, and the LDS antenna has been processed on the watch case 10. The welding part 20 is exposed from the first preset position 411 of the first receiving groove 41, and the welding ear 31 and the welding part 20 have been gold-plated. The specific process is as follows:

[0083] 1) If Figure 4 As shown, AB glue is poured into the first receiving groove 41 of the watch case 10 in sequence;

[0084] 2) If Figure 5 As shown, the metal ornament 30 is arranged on the watch case 10, and the welding ear 31 is placed in the second receiving groove 42 to contact with the uncured AB glue, and the upper surface of the welding ear 31 is made flush with the welding part 20 as much as possible, and the AB glue cannot cover the surface of the welding ear 31;

[0085] 3) If Figure 6 As shown, after the AB glue is cured to form an adhesive layer, a low-temperature solder paste is applied between the soldering ear 31 and the soldering portion 20, so that both the soldering ear 31 and the soldering portion 20 are in contact with the low-temperature solder paste;

[0086] 4) The welding ear 31 is fixed to the welding patch by laser curing the low-temperature solder paste, so that the metal decoration 30 and the LDS antenna are connected to form an antenna radiator;

[0087] 5) If Figure 7 As shown, halogen-free glue is poured into the packaging groove 40 to cover the welding ear 31, the welding part 20 and the low-temperature solder paste, and the halogen-free glue is prevented from overflowing from the edge of the packaging groove 40. Finally, the entire assembly process is completed after the halogen-free glue is cured.

[0088] The smart watch described in this embodiment includes the above-mentioned assembly structure of the watch antenna. The watch housing 10 has a built-in mainboard. The mainboard is provided with an antenna matching circuit electrically connected to the LDS antenna. The antenna matching circuit is used for antenna impedance tuning.

[0089] The smartwatch of this embodiment may include a touch screen / display screen for realizing touch and display functions, a battery for powering the mainboard, the touch screen / display screen, a camera for realizing shooting functions, a communication device for realizing communication functions (such as a wireless communication device, a Bluetooth communication device, an infrared communication device, etc.), a sensor for realizing detection functions (such as a gravity sensor, an acceleration sensor, a distance sensor, an air pressure sensor, an ultraviolet detector, a water play detection and identification module), a heart rate detector for realizing the heart rate detection of the user, a timer for realizing the timing function, an element for recognizing the identity of the user, such as a fingerprint module, a facial recognition module, and a microphone and a speaker for realizing audio input and / or output. It should be known that the above-mentioned components and functional modules are all arranged inside the watch housing 10 and are electrically connected to the mainboard, and the control of these components and functional modules is realized through the mainboard, thereby controlling them to realize the corresponding functions.

[0090] A mounting boss 11 is protruded from the watch case 10, and a mounting hole 111 passes through the mounting boss 11. An avoidance hole 32 is opened on the metal ornament 30. The metal ornament 30 is sleeved on the outside of the mounting boss 11. When the metal ornament 30 is set on the watch case 10, the avoidance hole 32 is set opposite to the mounting hole 111. A camera is set in the mounting boss 11, and the lens of the camera is set facing the mounting hole 111 and the avoidance hole 32.

[0091] Specifically, the watch case 10 of the present embodiment is provided with packaging grooves 40 on the opposite sides of the mounting boss 11, and the welding parts 20 of the LDS antenna are exposed in the first accommodating grooves 41 of the two opposite packaging grooves 40. Correspondingly, welding ears 31 are provided on the opposite sides of the metal ornament 30, which are respectively used for welding with the two opposite welding parts 20, and packaging glue is poured into the two packaging grooves 40 after welding.

[0092] It should be specially noted here that, in the present embodiment, the metal ornament 30 is a decorative component for decorating the camera provided on the smart watch, but the present embodiment should not be understood as limiting the functional use of the metal ornament 30. In addition to being used to decorate the camera, the metal ornament 30 can also be a decorative component for functional components such as decorative buttons or speaker sound holes.

[0093] In the description herein, it should be understood that the terms "upper", "lower", "left", "right", etc., and other directions or positional relationships are only for the convenience of description and simplification of operation, and 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, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0094] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. 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 invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0095] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0096] The technical principle of the present invention is described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without paying creative labor, and these methods will fall within the scope of protection of the present invention.

Claims

1. A watch antenna assembly process, characterized in that: The following steps are involved: S10, processing a packaging groove (40) on the outer surface of the watch case (10), the packaging groove (40) comprising a first receiving groove (41), the groove bottom of the first receiving groove (41) forming a first preset position (411), and arranging the LDS antenna to at least partially expose the outer surface of the watch case (10) from the first preset position (411), the exposed portion of the LDS antenna forming a welding portion (20); S20, the packaging groove (40) further includes a second receiving groove (42), the second receiving groove (42) is processed on the outer surface of the watch case (10), the groove bottom of the second receiving groove (42) forms a second preset position (421) adjacent to the first preset position (411), and the depth of the first receiving groove (41) is less than the depth of the second receiving groove (42); S30, a welding ear (31) is provided on the metal decorative part (30), and the welding ear (31) is placed at a second preset position (421), so that the metal decorative part (30) is arranged close to the welding portion (20), and the welding surface of the welding ear (31) located in the second receiving groove (42) is flush with the surface of the welding portion (20) located in the first receiving groove (41); S40, applying solder paste (45) between the metal decorative part (30) and the welding part (20), and both the metal decorative part (30) and the welding part (20) are in contact with the solder paste (45); S50, heating the solder paste (45) to solidify it, so that the metal ornament (30) is connected to the LDS antenna through the solder paste (45), so as to form an antenna radiator on the outer surface of the watch case (10).

2. The assembly process of the watch antenna according to claim 1, characterized in that: In step S30, an adhesive layer (43) is provided at the second preset position (421) or on the metal decorative part (30), and then the metal decorative part (30) is placed at the second preset position (421), so that the metal decorative part (30) is bonded and fixed to the second preset position (421) through the adhesive layer (43).

3. The assembly process of the watch antenna according to claim 1, characterized in that: In S40, before applying the solder paste (45), the soldering point position of the metal decorative part (30) and the soldering part (20) are subjected to a gold plating process.

4. The assembly process of the watch antenna according to claim 1, characterized in that: Also includes the steps: S60, a packaging layer (44) is provided on the welding point position of the metal decorative part (30) and the welding part (20), so that the welding point position of the metal decorative part (30) and the welding part (20) are sealed by the packaging layer (44).

5. The assembly process of the watch antenna according to claim 4, characterized in that: The encapsulation layer (44) is formed by curing halogen-free glue.

6. An assembly structure of a watch antenna, characterized in that: include: A watch case (10), wherein a packaging groove (40) is processed on the outer surface of the watch case (10), wherein the packaging groove comprises a first receiving groove (41) and a second receiving groove (42), wherein the depth of the first receiving groove (41) is less than the depth of the second receiving groove (42), and the bottom of the first receiving groove (41) and the bottom of the second receiving groove (42) are respectively formed with adjacent first preset positions (411) and second preset positions (421); An LDS antenna is arranged at the first preset position (411) and is at least partially exposed from an outer surface of the watch housing (10) to form a welding portion (20); A metal ornament (30) is arranged on the outer surface of the watch case (10), and a welding ear (31) is provided on the metal ornament (30). The welding ear (31) is arranged at the second preset position (421) and the welding surface of the welding ear (31) is flush with the surface of the welding portion (20). The welding ear (31) is arranged close to the welding portion (20) and welded to the welding portion (20), so that the metal ornament (30) is electrically connected to the LDS antenna to form an antenna radiator arranged on the outer surface of the watch case (10).

7. The assembly structure of the watch antenna according to claim 6, characterized in that: The packaging groove (40) is filled with packaging glue, and the packaging glue completely covers the welding ear (31) and the welding part (20), so that after the packaging glue is cured, a packaging layer (44) for sealing the welding ear (31) and the welding part (20) is formed.

8. The assembly structure of the watch antenna according to claim 6, characterized in that: The welding ear (31) is bonded and fixed to the bottom of the packaging groove (40) via an adhesive layer (43).

9. A smart watch, characterized in that: include: The assembly structure of a watch antenna as claimed in any one of claims 6 to 8; The watch housing (10) has a built-in mainboard, and the mainboard is provided with an antenna matching circuit electrically connected to the LDS antenna; The watch housing (10) is provided with a mounting hole (111); The metal ornament (30) is provided with an avoidance hole (32); when the metal ornament (30) is arranged on the watch housing (10), the avoidance hole (32) is arranged opposite to the mounting hole (111); A camera is arranged in the watch housing (10), and the lens of the camera is arranged toward the mounting hole (111) and the avoidance hole (32).

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