CN210956995U

CN210956995U - Intelligent terminal

Info

Publication number: CN210956995U
Application number: CN201922452675.0U
Authority: CN
Inventors: 张建国; 赵培杰
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-07-07
Anticipated expiration: 2029-12-30

Abstract

The utility model discloses an intelligent terminal, its shell includes: a metal frame portion; the metal frame is provided with at least two grounding points along the circumferential direction, a feeding point is arranged between two adjacent grounding points, so that the metal frame between the two grounding points forms a loop antenna, the circuit board of the intelligent terminal comprises at least one antenna signal circuit, and each loop antenna is connected with one antenna signal circuit through the grounding points at two ends and the feeding point in the middle. The design scheme simplifies the manufacturing process of the antenna, keeps the shell of the intelligent terminal complete, does not affect the appearance and the strength of the intelligent terminal, and saves the slotting and cutting process and the nano injection molding process for splicing the split metal shell again compared with the intelligent terminal for manufacturing the antenna by slotting or cutting the metal shell in the prior art, thereby saving the cost.

Description

Intelligent terminal

Technical Field

The utility model relates to an intelligent terminal.

Background

The intelligent terminal such as current intelligent watch, bracelet, cell-phone uses metal material more and more to ask better shell effect and longer life. Meanwhile, the intelligent terminals need to be provided with antennas to realize a convenient information exchange function based on communication and data transmission requirements.

However, in the existing smart terminal, the antenna is not sufficiently installed, if the metal housing is cut (or cut), the strength and the appearance of the metal housing of the smart terminal are affected, and if the independent ceramic antenna is installed inside the metal housing, the metal housing is limited, and the antenna signal receiving and transmitting directivity is affected.

SUMMERY OF THE UTILITY MODEL

In view of the problem that there is not enough in prior art intelligent terminal's antenna design, proposed the utility model discloses an intelligent terminal to overcome above-mentioned problem.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an intelligent terminal, the housing of the intelligent terminal comprising: a metal frame portion;

the metal frame is provided with at least two grounding points along the circumferential direction, a feeding point is arranged between two adjacent grounding points, so that the metal frame between the two grounding points forms a loop antenna, the circuit board of the intelligent terminal comprises at least one antenna signal circuit, and each loop antenna is connected with one antenna signal circuit through the grounding points at two ends and the feeding point in the middle.

Optionally, the length of the metal frame between the two grounding points is determined according to the working frequency band of the loop antenna.

Optionally, at the grounding point and/or the feeding point location, the metal frame is provided with a connection contact.

Optionally, the connection contact is a protruding platform arranged inside the metal frame.

Optionally, the circuit board is provided with an elastic connection element corresponding to the positions of the grounding point and the feeding point, and the antenna signal circuit is connected with the corresponding grounding point and the feeding point through the elastic connection element.

Optionally, two adjacent loop antennas share the same ground point.

Optionally, for one loop antenna, at least one of two ends of the loop antenna is provided with a plurality of grounding points to realize multipoint grounding, and the size of each grounding point of the multipoint grounding is smaller than the first threshold.

Optionally, for one loop antenna, at least one of the two ends of the loop antenna is provided with a grounding point, and the size of the grounding point is larger than the second threshold.

Optionally, the feed point position of the loop antenna is determined according to the return loss of the loop antenna.

Optionally, the position of the feed point of the loop antenna enables the return loss of the loop antenna to resonate on the working frequency band of the loop antenna.

To sum up, the beneficial effects of the utility model are that:

the antenna is formed by the metal frame part of the intelligent terminal shell, and on the basis of keeping the metal frame complete, one end length is intercepted on the metal frame, and the grounding points at two ends and the middle feed point are arranged to form the loop antenna. The design scheme of the antenna simplifies the manufacturing process, keeps the shell of the intelligent terminal complete, does not affect the appearance and the strength of the intelligent terminal, and saves the slotting and cutting process and the nano injection molding process for splicing the split metal shell again compared with the intelligent terminal for manufacturing the antenna by slotting or cutting the metal shell in the prior art, thereby saving the cost.

Drawings

Fig. 1 is a schematic view illustrating an antenna structure of an intelligent terminal according to an embodiment of the present invention;

fig. 2 is a schematic view illustrating an antenna structure of an intelligent terminal according to another embodiment of the present invention;

fig. 3 is a schematic diagram illustrating an antenna structure of an intelligent terminal according to another embodiment of the present invention;

in the figure: metal frame 100, ground point 110, feed point 120, circuit board 200.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The technical conception of the utility model is that: the utility model discloses the metal frame part that utilizes the intelligent terminal shell forms the antenna, on keeping the complete basis of metal frame, through intercepting one end length on the metal frame, sets up both ends ground point and middle feed point and constitutes the loop antenna. The design scheme of the antenna simplifies the manufacturing process, the shell integrity of the intelligent terminal is also kept, the appearance and the strength of the intelligent terminal are not influenced, compared with the intelligent terminal for manufacturing the antenna through slotting or cutting the metal shell in the prior art, the slotting and cutting process is omitted, the nano injection molding process for splicing the split metal shell again is also omitted, the cost is saved, meanwhile, compared with the technical scheme that the ceramic antenna is arranged in the metal shell in the prior art, the limitation of the metal shell to ceramic antenna signals is also avoided, and the signal direction performance of the antenna is improved.

Fig. 1 is a schematic diagram of an embodiment of the present invention provides an antenna configuration of an intelligent terminal, as shown in fig. 1, an intelligent terminal, the intelligent terminal includes a housing and a circuit board 200 disposed in the housing, the housing includes: a metal frame portion.

The metal frame 100 is provided with at least two grounding points 110 along the circumferential direction, and a feeding point 120 is arranged between two adjacent grounding points 110, so that the metal frame 100 between the two grounding points 110 forms a loop antenna, the circuit board 200 of the intelligent terminal comprises at least one antenna signal circuit, and each loop antenna is connected with one antenna signal circuit through the grounding points 110 at two ends and the feeding point 120 in the middle. In the embodiment shown in fig. 1, two grounding points 110 above and below the left side intercept one loop antenna and feed through the feeding point 120 on the left side, and two grounding points 110 above and below the right side intercept another loop antenna and feed through the feeding point 120 on the right side.

Therefore, by arranging the two grounding points 110 and the middle feeding point 120, a part of the metal frame 100 is intercepted and used as a loop antenna, and since slotting and cutting are not needed, the manufacturing process of the antenna is simple, and one loop antenna can be determined only through three points, so that the design of the antenna is flexible, and the layout setting is convenient.

In one embodiment of the present application, the length of the metal frame 100 between the two grounding points 110 is determined according to the operating frequency band of the loop antenna. The two grounding points 110 serve as a starting point and a cut-off point of the loop antenna, and determine the length of the loop antenna. The loop antenna length is 1/2 wavelengths of the operating band, and is about 60mm in the case of a 2.4GHz antenna.

In one embodiment of the present application, the metal frame 100 is provided with a connection contact at the position of the ground point 110 and/or the feeding point 120, and the connection contact is used for contacting and connecting with the signal end of the antenna signal circuit of the circuit board 200, so that the loop antenna and the antenna signal circuit are connected together.

In a preferred embodiment of the present application, the connection contact is a protruding platform disposed inside the metal frame 100, and the protruding platform can be well connected and contacted with the signal terminal of the antenna signal circuit of the circuit board 200, so as to implement transmission and reception of the antenna signal.

In one embodiment of the present application, the circuit board 200 is provided with an elastic connection element corresponding to the positions of the grounding point 110 and the feeding point 120, and the antenna signal circuit is connected to the corresponding grounding point 110 and the feeding point 120 through the elastic connection element.

The elastic connecting element is, for example, a metal dome or pogo pin, and the protruding platform is disposed at the positions of the grounding point 110 and the feeding point 120 of the metal frame 100, so that the metal dome or pogo pin of the circuit board 200 can be well and reliably contacted with the protruding platform of the metal frame 100 during assembly, thereby ensuring effective stability of the antenna signal circuit.

In one embodiment of the present application, two adjacent loop antennas may share the same ground point 110 therebetween. As shown in fig. 2, the two loop antennas at the left and right share one grounding point 110 at the lower part, so that the number of grounding points 110 is reduced, and the limited space inside the intelligent terminal is better adapted. The intelligent terminal can be a mobile phone, an intelligent watch or a bracelet and the like.

In an embodiment of the present application, referring to the embodiment shown in fig. 3, for a loop antenna, at least one of two ends of the loop antenna is provided with a plurality of grounding points 110 to implement multipoint grounding, and the size of each grounding point 110 of the multipoint grounding is smaller than the first threshold. Alternatively, for a loop antenna, the size of the ground point 110 disposed at least one of the two ends is larger than the second threshold. The first threshold and the second threshold may be set according to actual conditions such as circuit board wiring, loop antenna size and efficiency. In the embodiment shown in fig. 3, the upper and lower grounding points 110 are shared by the left and right loop antennas. The grounding points 110 at the upper end include a plurality of separately arranged grounding points to realize multi-point grounding, and the grounding points 110 at the lower end realize integral grounding by using a flaky continuous connection mode. The two grounding modes can enlarge the grounding area, so that the signal basis of the antenna is more stable, and the signal quality of the loop antenna is improved.

In one embodiment of the present application, the location of the feed point 120 of the loop antenna is determined according to the return loss of the loop antenna.

Specifically, the position of the feed point 120 of the loop antenna enables the return loss of the loop antenna to resonate in the working frequency band of the loop antenna, and the distance between the feed point 120 and one of the grounding points 110 is adjusted, so that the return loss of the loop antenna is the best. The specific parameters are different because the two grounding points 110 and the distance between the grounding point 110 and the feeding point 120 are influenced by the thickness and width of the metal frame 100.

In summary, according to the intelligent terminal disclosed by the application, the loop antenna is formed by using the metal frame of the housing, and a groove does not need to be formed or the metal frame part of the intelligent terminal housing does not need to be cut off, so that the integrity of the intelligent terminal housing is ensured, and the intelligent terminal is more flexible and convenient in appearance design; meanwhile, the manufacturing process is simplified, the initial position and the stop position of the grounding point of the loop antenna can be selected at any part of the whole metal frame, so that the loop antenna is more flexible in design, the position with small antenna clearance can be avoided, and the transmitting and receiving effects of the loop antenna are better; the loop antenna is formed by the metal frame part of the shell, corresponding grounding points and feeding points are reserved in advance in the metal frame manufacturing process, one loop antenna can be realized only by three points, the structure is simple, compared with an intelligent terminal for manufacturing the antenna by slotting or cutting a metal shell in the prior art, the slotting and cutting process is omitted, the nano injection molding process for splicing the split metal shell is omitted, the cost is saved, meanwhile, compared with the technical scheme that the ceramic antenna is arranged in the metal shell in the prior art, the limitation of the metal shell on ceramic antenna signals is avoided, and the signal direction performance of the antenna is improved.

In view of the above, it is only the specific embodiments of the present invention that other modifications and variations can be made by those skilled in the art based on the above-described embodiments in light of the above teachings. It should be understood by those skilled in the art that the foregoing detailed description is for the purpose of better explaining the present invention, and the scope of the present invention should be determined by the scope of the claims.

Claims

1. The utility model provides an intelligent terminal, its characterized in that, this intelligent terminal's shell includes: a metal frame portion;

the intelligent terminal comprises a metal frame and an intelligent terminal, wherein the metal frame is provided with at least two grounding points along the circumferential direction, a feeding point is arranged between two adjacent grounding points, so that the metal frame between the two grounding points forms a loop antenna, a circuit board of the intelligent terminal comprises at least one antenna signal circuit, and each loop antenna is connected with one antenna signal circuit through the grounding points at two ends and the feeding point in the middle.

2. The intelligent terminal according to claim 1, wherein the length of the metal frame between the two grounding points is determined according to an operating frequency band of the loop antenna.

3. The intelligent terminal according to claim 1, characterized in that the metal frame is provided with connection contacts at the grounding point and/or the feeding point location.

4. The intelligent terminal according to claim 3, wherein the connection contact is a protruding platform disposed inside the metal frame.

5. The intelligent terminal according to claim 1, wherein the circuit board is provided with an elastic connection element corresponding to the positions of the grounding point and the feeding point, and the antenna signal circuit is connected to the corresponding grounding point and the feeding point through the elastic connection element.

6. The intelligent terminal of claim 1, wherein two adjacent loop antennas share the same ground point.

7. The intelligent terminal according to claim 1, wherein for one loop antenna, at least one of two ends of the loop antenna is provided with a plurality of grounding points to realize multipoint grounding, and the size of each grounding point of the multipoint grounding is smaller than the first threshold.

8. The intelligent terminal according to claim 1, wherein for one loop antenna, at least one of the two ends of the loop antenna is provided with a grounding point with a size larger than a second threshold.

9. The intelligent terminal of claim 1, wherein the location of the feed point of the loop antenna is determined according to the return loss of the loop antenna.

10. The intelligent terminal of claim 9, wherein the feed point of the loop antenna is positioned such that the return loss of the loop antenna resonates at an operating frequency band of the loop antenna.