CN204376967U

CN204376967U - Mobile terminal

Info

Publication number: CN204376967U
Application number: CN201420766370.1U
Authority: CN
Inventors: 罗益州; 王新宝
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2014-12-05
Filing date: 2014-12-05
Publication date: 2015-06-03
Anticipated expiration: 2024-12-05

Abstract

The utility model is applicable to communication technical field, provides a kind of mobile terminal, by being embedded in fixed support by NFC antenna, is intended to solve how to arrange NFC antenna to meet the technical problem of thin design requirement under metallic housing environment.This mobile terminal comprises shell and cover assembly, and wherein, shell and cover assembly are oppositely arranged and jointly form accommodation space, are provided with in accommodation space: circuit board; Battery, is electrically connected with circuit board; Fixed support, is fixedly installed between cover assembly and battery; Near-field communication NFC antenna, is embedded in fixed support; Wherein, NFC antenna comprises: antenna body and transfer element, and wherein, antenna body is embedded in fixed support, transfer element respectively with antenna body and circuit board electric coupling.By this NFC antenna is embedded at this fixed support, to reduce the stacks as high between this NFC antenna and this fixed support, make this mobile terminal meet frivolous requirement, promote Consumer's Experience.

Description

Mobile terminal

Technical Field

The utility model belongs to the technical field of communication, especially, relate to a mobile terminal.

Background

An antenna is a device that receives and transmits signals using frequency characteristics. In recent years, with the development of wireless terminals and Communication technologies, Near Field Communication (NFC) antennas have been increasingly researched and applied. The NFC technology starts with a Radio frequency identification (Radio frequency identification) technology, in which an inductive card reader and an inductive card are combined on a single chip to implement a point-to-point data exchange function. The NFC chip is arranged on a mobile terminal such as a mobile phone and the like, functions such as electronic payment, intelligent identification, data transmission and the like can be realized, and wireless connection and data sharing among a plurality of devices such as the mobile phone, a palm computer, a computer and the like can be conveniently realized through the NFC function.

With the design trend of thinning mobile terminals such as mobile phones, the miniaturization of NFC is more and more emphasized. Designers have to implement the read/write function of NFC in smaller and smaller spaces, and meanwhile, due to the appearance of mobile terminals such as mobile phones, a metal housing (e.g., a metal battery cover) is a trend, but since the metal housing shields electromagnetic radiation, the NFC coil cannot communicate with the space outside the metal housing.

Set up the NFC antenna under the metal casing environment, the mode that usually adopts has: one is to arrange a ferrite layer between the NFC antenna and the circuit board and the battery to reduce the signal interference of the electronic element and the battery on the circuit board to the NFC antenna, so that the cost is increased due to the arrangement of the ferrite layer, and the arrangement of the NFC antenna is also limited; another is to make a hole in the metal housing to let the NFC antenna radiate the signal out through one side of the metal housing, which has some effect on the integrity of the metal housing.

Therefore, it is an urgent technical problem in the industry to provide an NFC antenna in a metal casing environment to meet the requirement of a thin design of a mobile terminal.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a mobile terminal, through inlay the NFC antenna and locate the fixed bolster in, how to set up the technical problem of NFC antenna in order to satisfy frivolous designing requirement under aiming at solving among the prior art metal casing environment.

In a first aspect, an embodiment of the present invention provides a mobile terminal, including:

shell and lid subassembly, wherein, this shell sets up and forms the accommodation space jointly with this lid subassembly relatively, is provided with in this accommodation space:

a circuit board;

a battery electrically connected to the circuit board;

the fixed bracket is fixedly arranged between the cover body assembly and the battery;

the Near Field Communication (NFC) antenna is embedded in the fixed bracket; wherein,

this NFC antenna includes: the antenna comprises an antenna body and a transmission element, wherein the antenna body is embedded in the fixed support, and the transmission element is electrically coupled with the antenna body and the circuit board respectively.

With reference to the first aspect, in a first possible implementation manner, the antenna body is integrally formed in the fixing bracket.

With reference to the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation manner, a receiving cavity for receiving the antenna body is disposed on the fixing bracket, and an opening is disposed on a side of the receiving cavity facing the cover assembly.

With reference to the first aspect or the first possible implementation manner of the first aspect, in a third possible implementation manner, a receiving cavity for receiving the antenna body is disposed on the fixing bracket, an opening is disposed on a side of the receiving cavity facing the battery, and a window for the antenna body to transmit signals is disposed at a bottom of the receiving cavity.

With reference to the second or third possible implementation manner of the first aspect, in a fourth possible implementation manner, a space is provided between the antenna body and the inner wall of the receiving cavity.

With reference to the fourth possible implementation manner, in a fifth possible implementation manner, the position of the window corresponds to the position of the antenna body on the lower surface of the fixing support.

With reference to any one of the third to fifth possible implementation manners of the first aspect, in a sixth possible implementation manner, the window includes a plurality of strip-shaped grids arranged at intervals, and the strip-shaped grids are arranged perpendicularly to a direction in which a long side or a wide side of the fixing support is located.

With reference to any one of the third to fifth possible implementation manners of the first aspect, in a seventh possible implementation manner, the window includes a plurality of strip-shaped grids that are arranged at intervals and correspond to the antenna body, and the strip-shaped grids are arranged in an inclined manner with respect to a direction in which the long side or the wide side of the fixing support is located.

With reference to any one possible implementation manner of the third to fifth possible implementation manners of the first aspect, in an eighth possible implementation manner, the window includes: the antenna comprises a hole and an open slot, wherein the position of the hole corresponds to the position of the antenna body, and the open slot is communicated with the hole and extends to one side edge of the fixed support in the direction away from the hole.

With reference to any one possible implementation manner of the third to fifth possible implementation manners of the first aspect, in a ninth possible implementation manner, the window includes a plurality of grids, and the plurality of grids form a grid array.

With reference to the first aspect or any one of the first to ninth possible implementation manners of the first aspect, in a tenth possible implementation manner, the antenna body is a metal layer disposed on a lower surface of the fixing support.

With reference to the first aspect or with reference to any one of the first to ninth possible implementation manners of the first aspect, in an eleventh possible implementation manner, the antenna body includes: a substrate attached to the upper surface of the fixing support and a metal layer disposed on the upper surface of the substrate.

With reference to the eleventh possible implementation manner, in a twelfth possible implementation manner, the substrate is made of an iron oxide material or a flexible material containing magnetic powder.

With reference to any one of the tenth to the twelfth possible implementation manners of the first aspect, in a thirteenth possible implementation manner, the metal layer is a loop coil and includes a first end point and a second end point;

the transmission element includes:

the first transmission element is electrically connected with the first end point and the circuit board respectively;

and the second transmission element is electrically connected with the second end point and the circuit board respectively.

With reference to the thirteenth possible implementation manner, in a fourteenth possible implementation manner, a first through hole corresponding to the first end point and a second through hole corresponding to the second end point are disposed on the fixing support, the first transmission element passes through the first through hole and is electrically connected to the first end point, and the second transmission element passes through the second through hole and is electrically connected to the second end point.

With reference to the first aspect or with reference to any one of the first to fourteenth possible implementation manners of the first aspect, in a fifteenth possible implementation manner, the enclosure includes:

the shell part is covered on one side of the battery, which is far away from the cover body assembly;

the side frame surrounds the shell and the cover assembly and forms the accommodating space together with the shell and the cover assembly.

With reference to the fifteenth possible implementation manner, in a sixteenth possible implementation manner, the housing portion and the side frame are integrally molded.

With reference to the fifteenth possible implementation manner, in a seventeenth possible implementation manner, the housing portion is fixedly connected to the side frame.

With reference to any one of the fifteenth possible implementation manner to the seventeenth possible implementation manner, in an eighteenth possible implementation manner, the fixing bracket is fixedly connected to the inner side of the side frame.

With reference to any one of the fifteenth possible implementation manner to the seventeenth possible implementation manner, in a nineteenth possible implementation manner, the fixing bracket is integrally formed with the side frame.

Based on above-mentioned technical scheme, according to the utility model discloses mobile terminal locates this fixed bolster through inlaying this NFC antenna to reduce the height of piling up between this NFC antenna and this fixed bolster, make this mobile terminal satisfy frivolous requirement, promote user experience.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention or the description of the prior art will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of another mobile terminal according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a housing and a fixing bracket according to an embodiment of the present invention;

fig. 4 is another schematic structural diagram of the housing and the fixing bracket according to the embodiment of the present invention;

fig. 5 is a schematic structural diagram of an NFC antenna provided in an embodiment of the present invention;

fig. 6 is a schematic structural diagram of an NFC antenna and a first window provided in an embodiment of the present invention;

fig. 7 is a schematic structural diagram of an NFC antenna and a second window according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of an NFC antenna and a third window provided in the embodiment of the present invention;

fig. 9 is a schematic structural diagram of an NFC antenna and a fourth window provided in the embodiment of the present invention;

fig. 10 is a schematic structural diagram of an NFC antenna and a fifth window according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of an NFC antenna and a sixth window provided in the embodiment of the present invention;

fig. 12 is a schematic structural diagram of an NFC antenna and a fixing bracket according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 and fig. 2, a mobile terminal according to an embodiment of the present invention includes: a housing 10 and a cover assembly 20, wherein the housing 10 and the cover assembly 20 are disposed opposite to each other and together form an accommodating space 200, and the accommodating space 20 has: a circuit board (not shown); a battery 50 electrically connected to the circuit board; a fixing bracket 30 fixedly disposed between the cover assembly 20 and the battery 50; a near field communication NFC antenna 40 embedded in the fixing bracket 30; the NFC antenna 40 includes an antenna body 42 and a transmission element 44, the antenna body 42 is embedded in the fixing bracket 30, and the transmission element 44 is electrically coupled to the antenna body 42 and the circuit board respectively. .

According to the utility model discloses mobile terminal locates this fixed bolster 30 through inlaying this NFC antenna 40 to reduce the height of piling up between this NFC antenna 40 and this fixed bolster 30, make this mobile terminal satisfy frivolous requirement, promote user experience.

The embodiment of the present invention provides a mobile terminal, which can be a portable electronic device or a communication device, for example, a smart phone, a Personal Digital Assistant (PDA), a tablet computer, a notebook, a POS machine, or even a vehicle-mounted computer, and is not limited thereto. The mobile terminal can not only communicate, take pictures, listen to music and play games, but also realize the functions of positioning, information processing, fingerprint scanning, identity card scanning, bar code scanning, RFID scanning, IC card scanning, alcohol content detection and the like.

In this embodiment, the circuit board and the battery 50 are disposed in the accommodating space 200 side by side, or the circuit board is disposed in the accommodating space 200 and between the fixing bracket 30 and the battery 50, and the disposing manner of the circuit board is not limited thereto.

In this embodiment, the cover assembly 20 is a touch display module or a touch panel assembly, and at least includes a display module, a touch sensing unit, and a protective glass, wherein the protective glass is located at an outermost layer. In other embodiments, the cover assembly 20 is a display screen structure of the mobile terminal, and at least includes a display module and a cover glass, wherein the cover glass is located at an outermost layer.

In this embodiment, the housing 10 may be used to protect the internal components of the mobile terminal from physical damage, and in addition, the housing 10 may provide electromagnetic interference shielding for the mobile terminal and its internal components. It will be appreciated that the housing 10 may be formed or constructed of any suitable material, such as plastic, metal, or composite materials. Preferably, the housing 10 is made of an all-metal material, and when the NFC antenna 40 is embedded in the fixing bracket 30, a radiation signal of the NFC antenna 40 is output along one side of the cover assembly 20, and the radiation signal is not affected by the all-metal housing 10.

In this embodiment, the NFC is an abbreviation of Near Field Communication, that is, a Near Field Communication technology, which is a non-contact identification and interconnection technology, and can perform short-range wireless Communication between a mobile device, a consumer electronic product, a PC, and an intelligent control tool, so that a consumer can exchange information, access content, and service easily and intuitively. NFC includes an NFC module and an NFC antenna 40, where the NFC module generally includes a high-speed single chip, a radio frequency chip, and a matching circuit.

Referring to fig. 1 to 5, in the mobile terminal provided by the embodiment of the present invention, the NFC antenna 40 is embedded in the fixing bracket 30, so as to avoid the NFC antenna 40 being disposed on one side of the housing 10 and requiring an additional ferrite layer to increase the overall thickness of the mobile terminal, so that the mobile terminal meets the light and thin design requirement. According to the electromagnetic principle, the magnetic field generated by the antenna body 42 of the NFC antenna 40 passes through the cover assembly 20 and radiates to the space above the cover assembly 20; of course, in the case that the housing 10 is made of a non-metal material, the magnetic field generated by the antenna body 42 of the NFC antenna 40 also passes through the housing 10 and radiates to the space outside the housing 10, so as to achieve the functions of information exchange and data transmission.

In this embodiment, the NFC antenna 40 is embedded in the fixing bracket 30, so that the upper surface of the NFC antenna 40 is flush with the outer surface of the fixing bracket 30 or even lower than the outer surface of the fixing bracket 30, which effectively reduces the stacking height of the NFC antenna 40 and the fixing bracket 30. In other embodiments, the NFC antenna 40 may be arranged in other manners.

In this embodiment, the fixing bracket 30 is disposed in the housing 10 to provide a certain supporting function, so as to prevent the cover assembly 20 and the battery 50 from being squeezed. On the other hand, the fixing bracket 30 also plays a certain role in isolation, so that the cover assembly 20, the battery 50 and the circuit board are separately disposed in two independent spaces of the accommodating space 200, thereby preventing the mutual interference of electronic components.

Referring to fig. 1, the antenna body 42 is further integrally formed in the fixing bracket 30. It is understood that the antenna body 42 is a part of the fixing bracket 30 and is formed directly on the fixing bracket 30. The antenna body 42 may be integrally formed with the fixing bracket 30.

Referring to fig. 1 to 5, in the embodiment, the housing 10 is made of an all-metal material, and the magnetic field generated by the antenna body 42 of the NFC antenna 40 cannot be radiated from one side of the housing 10 due to the all-metal housing 10, so that the magnetic field generated by the NFC antenna 40 is radiated from one side of the cover assembly 20 by forming the NFC antenna 40 on the fixing bracket 30, thereby preventing the NFC antenna 40 from being shielded from signals due to the metal housing 10. One way is to dispose the antenna body 42 at a side of the fixing bracket 30 close to the cover assembly 20, so that the magnetic field generated by the NFC antenna 40 is radiated from the side of the cover assembly 20, as shown in fig. 1 and 3. Alternatively, the antenna body 42 is formed on the side of the fixing bracket 30 facing the battery 50, so that the magnetic field generated by the antenna body 42 is radiated from the side of the cover assembly 20, as shown in fig. 2 and 4.

Referring to fig. 1 to 5, preferably, the housing 10 is made of an all-metal material, the fixing bracket 30 is also made of an all-metal material, and the magnetic field generated by the antenna body 42 of the NFC antenna 40 cannot be radiated from one side of the housing 10 due to the existence of the all-metal material, so that the NFC antenna 40 is embedded in the housing to radiate the magnetic field generated by the NFC antenna 40 from one side of the cover assembly 20, and the radiation direction of the NFC antenna 40 is unidirectional and can strongly ensure the strength of the radiation signal. One way is to dispose the antenna body 42 at a side of the fixing bracket 30 close to the cover assembly 20, so that the magnetic field generated by the NFC antenna 40 is radiated from the side of the cover assembly 20, as shown in fig. 1 and 3. Alternatively, the antenna body 42 is formed on the side of the fixing bracket 30 facing the battery 50, and a window 32 is disposed in a region of the fixing bracket 30 corresponding to the antenna body 42, so that the magnetic field generated by the antenna body 42 is radiated from the side of the cover assembly 20 along the window 32, as shown in fig. 2 and 4.

By using the arrangement mode of the NFC antenna 40, the NFC antenna 40 is a strong magnetic field point located in front of the mobile terminal, which is more suitable for the use habit of the user and convenient for use. The front here refers to the display side of the mobile terminal.

Referring to fig. 1 and fig. 3, a receiving cavity 34 for receiving the antenna body 42 is further disposed on the fixing bracket 30, and an opening is disposed on a side of the receiving cavity 34 facing the cover assembly 20. By disposing the antenna body 42 in the receiving cavity 34, the upper surface of the antenna body 42 is flush with the upper surface of the fixing bracket 30 or slightly lower than the upper surface of the fixing bracket 30, so that the thickness of the mobile terminal is reduced as a whole, and the design of light weight and thin weight is satisfied. The opening of the receiving cavity 34 faces one side of the cover assembly 20, so that the magnetic field generated by the NFC antenna 40 is directly radiated out through the one side of the cover assembly 20, and the use habit of the user is better met.

Referring to fig. 2 and 4, further, the fixing bracket 30 is provided with a receiving cavity 34 for receiving the antenna body 42, the receiving cavity 34 is provided with an opening at a side facing the battery 50, and a window 32 for the antenna body 42 to transmit an antenna signal is provided at a bottom of the receiving cavity 34. It can be understood that the window 32 is disposed at the bottom of the receiving cavity 34, and the antenna body 42 is disposed in the receiving cavity 34 such that the upper surface of the antenna body 42 is flush with the lower surface of the fixing bracket 30 or slightly lower than the lower surface of the fixing bracket 30, thereby reducing the thickness of the mobile terminal as a whole and satisfying the design of light weight and thin weight. The opening of the receiving cavity 34 faces one side of the cover assembly 20, and a window 32 is disposed at the bottom of the receiving cavity, so that the magnetic field generated by the NFC antenna 40 is directly radiated from one side of the cover assembly 20 along the window 32, and the use habit of the user is better met.

Referring to fig. 1 to 5 and fig. 12, further, a gap 60 is formed between the antenna body 42 and the inner wall of the receiving cavity 34. Preferably, a space 60 is provided between each side of the antenna body 42 and the inner wall of the receiving cavity 34, and the distance of the space 60 is greater than 1 mm but significantly smaller than the size of the antenna body 42. The spacing 60 is provided to better radiate the magnetic field of the antenna body 42.

Referring to fig. 2 and 6, preferably, the position of the window 32 corresponds to the position of the antenna body 42 on the lower surface of the fixing bracket 30. It will be appreciated that the window 32 corresponds to the area of the antenna body 42. The size of the area where the window 32 is located is adapted to the size of the antenna body 42, and the window 32 is opposite to the antenna body 42, so that the radiation signal generated by the NFC antenna 40 is radiated from the window 32 along one side of the cover assembly 20.

Referring to fig. 2, 7 and 8, preferably, the window 32 includes a plurality of strip-shaped grids 322 disposed at intervals, and each strip-shaped grid 322 is disposed perpendicular to the direction of the long side or the wide side of the fixing bracket 30. The strip-shaped grids 322 correspond to the antenna body 42, and the arrangement direction of each strip-shaped grid 322 is perpendicular to the direction of the long side or the wide side of the fixing bracket 30, i.e. the arrangement direction of the strip-shaped grids 322 is perpendicular to the direction of the long side or the wide side of the cover assembly 20 (e.g. a display screen). The electromagnetic waves of the NFC antenna 40 are radiated out through the strip-shaped grid 322 which is arranged at intervals. Preferably, the distance between the bar-shaped grids 322 is the same, and the bar-shaped grids 322 are parallel to each other.

In other embodiments, a portion of the strip-shaped grills 322 is perpendicular to the long side direction of the fixing bracket 30, and a portion of the strip-shaped grills 322 is perpendicular to the wide side direction of the fixing bracket 30, so as to form a grillwork intersection.

Referring to fig. 2 and 9, preferably, the window 32 includes a plurality of strip-shaped grids 322 disposed at intervals and corresponding to the antenna body 42, and each strip-shaped grid 322 is disposed obliquely to the direction of the long side or the wide side of the fixing bracket 30. Preferably, the distance between the bar-shaped grids 322 is the same, and the bar-shaped grids 322 are parallel to each other. The arrangement direction of each strip-shaped grid 322 is inclined to the direction of the long side or the wide side of the fixing bracket 30, that is, the arrangement direction of the strip-shaped grid 322 forms a certain angle with the length direction or the width direction of the cover assembly 20 (for example, a display screen), and the angle is any angle except 0 degree, 90 degrees and 180 degrees from 0 degree to 180 degrees. The electromagnetic waves of the NFC antenna 40 are radiated out through the strip-shaped grid 322 which is arranged at intervals.

In other embodiments, a portion of the bar-shaped grids 322 is disposed obliquely to the long side direction of the fixing bracket 30, and a portion of the bar-shaped grids 322 is perpendicular to the bar-shaped grids 322 or forms a certain oblique angle to form grid intersection.

The shape of the wire grids 322 in the above embodiments is not necessarily rectangular, but may be any shape designed according to actual conditions, and the size of the wire grids 322 may be designed to be the same size or different sizes according to actual needs.

Referring to fig. 2 and 10, preferably, the window 32 includes a hole 324 and an open slot 326, the position of the hole 324 corresponds to the position of the antenna body 42, and the open slot 326 is communicated with the hole 324 and extends to a side of the fixing bracket 30 in a direction away from the hole 324. The fixing bracket 30 is provided with a hole 324 and an open slot 326, so that the magnetic field generated by the antenna body 42 is radiated to the space above the cover assembly 20 through the hole 324 and the open slot 326. The holes 324 are not necessarily rectangular, but may be circular or any other shape designed according to actual conditions, and the size of the holes 324 may be designed to be the same size or different sizes according to actual requirements.

Referring to fig. 2 and 11, preferably, the window 32 includes a plurality of grids 328, and the grids 328 form a grid array. The grid 328 may be square, circular or any other shape, and its size may be designed to be the same size or different sizes according to actual needs. The grids 328 are disposed on the fixing bracket 30 in rows and columns, the position of the grid 328 corresponds to the antenna body 42, and the magnetic field generated by the antenna body 42 is radiated to the space above the cover assembly 20 through the grid 328.

Referring to fig. 1, 2 and 5, the antenna body 42 is a metal layer 420 disposed on the upper surface of the fixing support 30, and specifically, the metal layer 420 is formed on the lower surface of the fixing support 30 by winding, printing or etching. The near field generated by the NFC antenna 40 module is coupled through the metal layer 420, so as to implement functions of information exchange and data transmission. As for the antenna manufactured by the printing process, specifically, the antenna manufactured by the printing process is manufactured by directly printing conductive ink (carbon paste, silver paste, copper paste, or other materials) on an insulating substrate through a screen printing plate, and curing the conductive ink at a suitable temperature to form a conductive circuit of the antenna, that is, to form the antenna body 42. For the etching process, specifically, a polyester film is used as an insulating substrate, a resin adhesive special for a flexible printed circuit board is used to press an aluminum foil (copper foil) and the polyester film together to form a conductive substrate with a metal layer 420, a photosensitive dry film or a screen printing photosensitive ink is pasted as an anti-etching layer, a pattern circuit is manufactured by adopting the processes of exposure, development, etching and film removal, and circuit connection of two circuits is realized by riveting, so that the antenna body 42 is formed.

In other embodiments, the antenna body 42 may also be implemented by using a flexible printed circuit board process, specifically, the antenna body 42 of the NFC antenna 40 is manufactured by mainly using a polyimide double-sided copper-clad substrate and a silk-screen ink solder resist or polyimide PI film material, conductive lines are manufactured through engineering design, cutting, drilling, electrolytic copper deposition, film exposure, DES lines, and other processes, insulation performance and weldability of a product are ensured through a solder resist or ink printing process and surface treatment, and the consistency of performance of each batch of the product is ensured by using LCR resistance testing, while a testing jig may be separately designed to simulate testing of antenna induction distance, thereby ensuring reliability of product performance and realization of product application function.

The metal layer 420 is disposed on the fixing bracket 30 as a radiation main body of the antenna body 42 to form a resonant current path and cause electromagnetic wave radiation. The metal layer 420 makes the NFC antenna 40 flexible in design, can fully utilize the entire surface of the fixing support 30, and is suitable for the external surface to be a flat surface or any three-dimensional surface.

Referring to fig. 1, 2 and 5, preferably, the antenna body 42 includes a substrate 425 attached to the upper surface of the fixing bracket 30 and a metal layer 420 formed on the surface of the substrate 425. Preferably, the substrate 425 is made of an iron oxide material or a flexible material containing magnetic powder. It is understood that the substrate 425 is a magnetic substrate 425, and the substrate 425 is located right under the metal layer 420 for shielding the metal fixing bracket 30, the circuit board, the battery 50, and the like under the metal layer 420. The metal layer 420 is disposed on the substrate 425 as a radiation body of the antenna body 42 to form a resonant current path and cause electromagnetic wave radiation. The substrate 425 is provided to enhance the magnetic field of the NFC antenna 40, thereby increasing the communication distance.

Referring to fig. 1, 2 and 5, preferably, the metal layer 420 is a loop coil and includes a first terminal 422 and a second terminal 424, and the transmission element 44 includes a first transmission element (not shown) and a second transmission element (not shown), the first transmission element is electrically connected to the first terminal 422 and the circuit board, respectively, and the second transmission element is electrically connected to the second terminal 424 and the circuit board, respectively. The first transmission element can electrically couple the first terminal 422 to the feeding terminal on the circuit board, and the second transmission element can electrically couple the second terminal 424 to the ground terminal on the circuit board; similarly, the first transmission element can electrically couple the first terminal 422 to a ground terminal on the circuit board, and the second transmission element can electrically couple the second terminal 424 to a feed-in terminal on the circuit board.

Referring to fig. 1, 2 and 5, preferably, a first through hole (not shown) corresponding to the first end 422 and a second through hole (not shown) corresponding to the second end 424 are formed in the fixing bracket 30, the first conveying element passes through the first through hole and is electrically connected to the first end 422, and similarly, the second conveying element passes through the second through hole and is electrically connected to the second end 424.

Referring to fig. 3 and 4, the housing 10 further includes a housing portion 12 and a side frame 14, the housing portion 12 covers a side of the battery 50 away from the cover assembly 20, and the side frame 14 surrounds the housing portion 12 and the cover assembly 20 and forms the accommodating space 200 together with the housing portion 12 and the cover assembly 14. It can be understood that the housing portion 12, the side frame 14 and the cover assembly 20 together form the accommodating space 200, so as to accommodate the internal components of the mobile terminal in the accommodating space 200 and provide a certain physical protection for the internal components.

Referring to fig. 3 and 4, the housing portion 12 is preferably integrally formed with the side frame 14. It is understood that the side frame 14 is a case 12 with a periphery extending toward a side of the cover assembly 20, and the case 12 and the side frame 14 are made of the same material, such as metal, plastic or composite material. In this embodiment, the housing portion 12 and the side frame 14 are both metal, shielding the radiated signal of the NFC antenna 40. In other embodiments, the housing portion 12 and the side frame 14 are made of different materials, such as metal for the housing portion 12 and plastic for the side frame 14, which are not listed here.

Referring to fig. 3 and 4, the housing portion 12 is preferably fixedly connected to the side frame 14. It will be appreciated that the housing portion 12 is fixedly attached to the side frame 14 by a snap-fit connection, or by screws. The housing portion 12 and the side frame 14 are made of the same material, such as metal, plastic or composite material. In this embodiment, the housing portion 12 and the side frame 14 are both metal, shielding the radiated signal of the NFC antenna 40. In other embodiments, the housing portion 12 and the side frame 14 are made of different materials, such as metal for the housing portion 12 and plastic for the side frame 14, which are not listed here.

Referring to fig. 3 and 4, preferably, the fixing bracket 30 is fixedly connected to the inner side of the side frame 14. It can be understood that the fixing bracket 30 is fixed to the inner side of the side frame 14 by a snap connection or a screw connection, the accommodating space 200 is divided into two independent spaces by the fixing bracket 30, and particularly, the battery 50 and the circuit board are accommodated in the space formed between the fixing bracket 30 and the housing 10, so that when the fixing bracket 30 and the housing 10 are both made of metal, the interference of electronic components on the circuit board to communication signals can be shielded.

Referring to fig. 3 and 4, the fixing bracket 30 is preferably integrally formed with the side frame 14. It can be understood that, in the case that the housing portion 12 and the side frame 14 are separately provided in two parts, the fixing bracket 30 and the side frame 14 are integrally formed, and similarly, the accommodating space 200 is divided into two independent spaces by the fixing bracket 30, and particularly, the battery 50 and the circuit board are accommodated in the space formed between the fixing bracket 30 and the housing 10, so that when the fixing bracket 30 and the housing 10 are both made of metal, the interference effect of the electronic components on the circuit board on the communication signal can be shielded.

In this embodiment, the antenna body 42 of the NFC antenna 40 may be located at the middle position, the left side, the right side, the upper portion or the lower portion of the fixing bracket 30, or may be disposed at any position of the fixing bracket 30, where the definition of the position is used for the side facing the cover assembly 20 (e.g., a display screen) when the mobile terminal is used as a reference.

The mobile terminal provided by each embodiment of the present invention reduces the stacking height between the NFC antenna 40 and the fixing bracket 30 by embedding the NFC antenna 40 in the fixing bracket 30, so that the mobile terminal meets the light and thin requirement, and the radiation signal of the NFC antenna 40 is radiated from the front of the mobile terminal, which is convenient for use and better conforms to the use habit of the user; in addition, the shielding of the metal shell 10 to the radiation signal of the NFC antenna 40 is also overcome, and the efficiency of the antenna is improved.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A mobile terminal, comprising:

shell and lid subassembly, wherein, the shell with lid subassembly sets up relatively and forms the accommodation space jointly, be provided with in the accommodation space:

a circuit board;

a battery electrically connected with the circuit board;

the NFC antenna includes: the antenna comprises an antenna body and a transmission element, wherein the antenna body is embedded in the fixed support, and the transmission element is electrically coupled with the antenna body and the circuit board respectively.

2. The mobile terminal of claim 1, wherein the antenna body is integrally formed within the fixed support.

3. The mobile terminal according to claim 1 or 2, wherein the fixing bracket is provided with a receiving cavity for receiving the antenna body, and the receiving cavity is provided with an opening at a side facing the cover assembly.

4. The mobile terminal of claim 3, wherein the antenna body is spaced from an inner wall of the receiving cavity.

5. The mobile terminal according to claim 1 or 2, wherein the fixing bracket is provided with a receiving cavity for receiving the antenna body, the receiving cavity is provided with an opening at a side facing the battery, and a window for the antenna body to transmit signals is provided at a bottom of the receiving cavity.

6. The mobile terminal of claim 5, wherein the window comprises a plurality of strip-shaped grids arranged at intervals, and the strip-shaped grids are arranged perpendicularly relative to the direction of the long side or the wide side of the fixed support.

7. The mobile terminal of claim 5, wherein the window comprises a plurality of strip-shaped grids which are arranged at intervals and correspond to the antenna body, and the strip-shaped grids are arranged obliquely relative to the direction of the long side or the wide side of the fixed support.

8. The mobile terminal of claim 5, wherein the window comprises: the antenna comprises a hole and an open slot, wherein the position of the hole corresponds to the position of the antenna body, and the open slot is communicated with the hole and extends to one side of the fixed support in the direction away from the hole.

9. The mobile terminal of claim 5, wherein the window comprises a plurality of grids, the plurality of grids comprising a grid array.

10. The mobile terminal of claim 5, wherein the antenna body is spaced from an inner wall of the receiving cavity.

11. The mobile terminal of claim 10, wherein the window is located at a position corresponding to a position of the antenna body on the lower surface of the fixing bracket.

12. The mobile terminal of claim 11, wherein the window comprises a plurality of strip-shaped grids arranged at intervals, and the strip-shaped grids are arranged perpendicularly relative to the direction of the long side or the wide side of the fixed support.

13. The mobile terminal of claim 11, wherein the window comprises a plurality of strip-shaped grids spaced apart from each other and corresponding to the antenna body, and the strip-shaped grids are disposed to be inclined with respect to a direction in which the long side or the wide side of the fixing bracket is located.

14. The mobile terminal of claim 11, wherein the window comprises: the antenna comprises a hole and an open slot, wherein the position of the hole corresponds to the position of the antenna body, and the open slot is communicated with the hole and extends to one side of the fixed support in the direction away from the hole.

15. The mobile terminal of claim 11, wherein the window comprises a plurality of grids, the plurality of grids comprising a grid array.

16. The mobile terminal of claim 1 or 2, wherein the antenna body is a metal layer disposed on a lower surface of the fixing support.

17. The mobile terminal of claim 16, wherein the metal layer is a toroidal coil and includes a first end and a second end;

the transmission element includes:

18. The mobile terminal of claim 17, wherein the fixing bracket has a first through hole corresponding to the first end and a second through hole corresponding to the second end, the first transmission element passes through the first through hole and is electrically connected to the first end, and the second transmission element passes through the second through hole and is electrically connected to the second end.

19. The mobile terminal of any of claims 16, wherein the housing comprises:

and the side frame surrounds the shell part and the cover body assembly and forms the accommodating space together with the shell part and the cover body assembly.

20. The mobile terminal of claim 19, wherein the housing portion is integrally molded with the side frame.

21. The mobile terminal of claim 19, wherein the housing portion is fixedly coupled to the side frame.

22. The mobile terminal of claim 1 or 2, wherein the antenna body comprises: the fixing support comprises a substrate attached to the upper surface of the fixing support and a metal layer arranged on the upper surface of the substrate.

23. The mobile terminal of claim 22, wherein the substrate is made of an iron oxide material or a flexible material containing magnetic powder.

24. The mobile terminal of claim 22, wherein the metal layer is a toroidal coil and includes a first end and a second end;

the transmission element includes:

25. The mobile terminal of claim 24, wherein the fixing bracket has a first through hole corresponding to the first end and a second through hole corresponding to the second end, the first transmission element passes through the first through hole and is electrically connected to the first end, and the second transmission element passes through the second through hole and is electrically connected to the second end.

26. The mobile terminal of claim 22, wherein the housing comprises:

27. The mobile terminal of claim 26, wherein the housing portion is integrally molded with the side frame.

28. The mobile terminal of claim 26, wherein the housing portion is fixedly coupled to the side frame.