CN216850297U - Middle frame antenna assembly and electronic equipment - Google Patents

Abstract

The utility model provides a center antenna module and electronic equipment. The utility model discloses center antenna module, include: a middle frame; the plastic part is annularly arranged on the peripheral surface of the middle frame and is provided with a rear cover side; the antenna is arranged in the plastic part and comprises a main body part and an extension part, and the extension part is connected with the main body part and extends towards the rear cover side. Therefore, according to the utility model discloses a center antenna module has the advantage of being convenient for strengthen the antenna radiation performance.

Description

Middle frame antenna assembly and electronic equipment

Technical Field

The utility model relates to an electronic equipment technical field, concretely relates to center antenna subassembly and electronic equipment.

Background

With the increasing thinness of electronic equipment products such as mobile phones, the design of the waist line of plastic parts of the mobile phones is narrower and narrower due to the fact that the glass of the mobile phones and the rear cover are both of 3D curved surfaces, and the radiation performance of the mobile phone antenna is affected by the radiation area. In the related art, the plastic part antenna completely covers the powder in the plastic frame, and the radiation area (cross-sectional area) of the plastic part antenna (MDA plastic part) of the in-mold injection molding process is small, which results in poor radiation performance of the mobile phone antenna.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent. To this end, the embodiment of the utility model provides a center antenna module and electronic equipment.

The utility model discloses center antenna module, include:

a middle frame;

the plastic part is arranged on the outer peripheral surface of the middle frame in a surrounding mode and is provided with a rear cover side;

the antenna is arranged in the plastic part and comprises a main body part and an extension part, and the extension part is connected with the main body part and extends towards the rear cover side.

Therefore, according to the utility model discloses the center antenna module has the advantage of being convenient for strengthen the antenna radiation performance.

In some embodiments, the plastic part has an inner side facing the middle frame and an outer side facing away from the middle frame, the extending part is located on the inner side of the main body part, and a part of the extending part is connected with the inner side of the main body part in the thickness direction of the plastic part.

In some embodiments, the rear cover side of the plastic part is provided with an adhesive surface, the extension part extends into the adhesive surface, and the rear surface of the extension part is arranged in a coplanar manner with the adhesive surface.

In some embodiments, the adhesive surface includes a first wall surface, a bottom wall surface, and a second wall surface arranged in this order, the first wall surface is located inside the second wall surface in the inside-outside direction of the plastic part, and the rear surface of the extension portion is arranged in a coplanar manner with the first wall surface.

In some embodiments, the rear surface of the extension portion is provided with a plurality of grooves, the grooves penetrate through the extension portion along the inner and outer directions of the plastic part, and the grooves are suitable for being embedded into a part of the plastic part.

In some embodiments, the body portion has a rear end surface facing the rear cover side, and a distance between the rear end surface of the body portion and the bottom wall surface is not less than 0.4 mm.

In some embodiments, the inner side surface of the main body portion is a stepped surface.

In some embodiments, the step surface includes a first surface and a second surface, the first surface is located inside the second surface, the first surface is located between the second surface and the extension portion, the plastic part has a screen side disposed opposite to the rear cover side, the screen side is provided with a screen groove, and a projection of the first surface in a thickness direction of the plastic part is located outside the screen groove.

In some embodiments, the plastic member includes a long side, and the extension portion is disposed on the long side of the plastic member.

In some embodiments, the size of each groove in the length direction of the long side of the plastic part is greater than or equal to 1.7mm and less than or equal to 4.7mm, and the distance between two adjacent grooves on the same long side of the plastic part in the length direction of the long side of the plastic part is greater than or equal to 7.5mm and less than or equal to 10.5 mm.

In some embodiments, the size of each groove in the length direction of the long side of the plastic part is 3.2mm, and the distance between two adjacent grooves on the same long side of the plastic part in the length direction of the long side of the plastic part is 9 mm.

The utility model also provides an electronic equipment, including the center antenna subassembly, the center antenna subassembly is foretell center antenna subassembly.

Drawings

Fig. 1 is a cross-sectional view of a center antenna assembly according to an embodiment of the present invention.

Fig. 2 is a side view of an antenna according to an embodiment of the invention.

Fig. 3 is a side view of a center antenna assembly according to an embodiment of the present invention.

Reference numerals:

middle frame antenna assembly 100, middle frame 101;

the plastic part 1, the rear cover side 11, the adhesive surface 12, the first wall surface 121, the bottom wall surface 122, the second wall surface 123, the screen side 13 and the screen groove 14;

the antenna 2, the body 21, the body rear end surface 211, the first surface 212, the second surface 213, the third surface 214, the extension 22, the extension rear surface 221, and the groove 222.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

The middle frame antenna assembly 100 according to the embodiment of the present invention is described below with reference to the drawings. As shown in fig. 1 to 3, an antenna assembly 100 of an embodiment of the present invention includes a middle frame 101, a plastic part 1, and an antenna 2.

The plastic member 1 is disposed around the outer peripheral surface of the middle frame 101, and the plastic member 1 has a rear cover side 11. The antenna 2 is disposed in the plastic part 1, the antenna 2 includes a main body 21 and an extension 22, and the extension 22 is connected to the main body 21 and extends toward the rear cover side 11.

The middle frame antenna assembly 100 according to the embodiment of the present invention is configured by providing the extension portion 22 extending toward the rear cover side 11, so that the antenna 2 includes the main body portion 21 and the extension portion 22. Specifically, the surface of the extension 22 toward the back cover side 11 may be adjacent to the wall surface of the back cover side 11 or be a part of the wall surface of the back cover side 11. Compared with the related art plastic part antenna completely inside the plastic frame, the extension portion 22 is suitable for increasing the radiation area (volume) of the antenna 2 to enhance the radiation performance of the antenna 2, that is, the extension portion 22 can increase the signal receiving performance of the antenna 2.

Therefore, the middle frame antenna assembly 100 according to the embodiment of the present invention has an advantage of facilitating enhancement of the radiation performance of the antenna 2.

As shown in fig. 1 to 3, an antenna assembly 100 of an embodiment of the present invention includes a middle frame 101, a plastic part 1, and an antenna 2. The middle frame 101 is made of metal and has a (substantially) rectangular frame body.

As shown in fig. 1, a plastic member 1 is annularly provided on an outer circumferential surface of the middle frame 101, and the plastic member 1 has a rear cover side 11 and a screen side 13 disposed opposite to the rear cover side 11. The rear cover side 11 is a direction in which the plastic part 1 faces a direction perpendicular to the inside and outside directions of the plastic part 1, the rear cover side 11 is suitable for mounting a rear cover of an electronic device, and the screen side 13 is suitable for mounting a screen of the electronic device. Specifically, the plastic part 1 is formed by plastic injection molding, and the rear cover side 11 of the plastic part 1 is provided with an adhesive surface 12, and the rear cover is arranged in the adhesive surface 12. The screen side 13 is provided with a screen slot 14, and an OLED screen (screen having an influence on the antenna 2) of the electronic device is mounted in the screen slot 14. For example, the thickness direction of the plastic part 1 is the vertical direction, the rear cover side 11 is the upper side of the plastic part 1, and the adhesive surface 12 faces upward. The screen side 13 is the lower side of the plastic part 1, and the screen groove 14 faces downward. The up-down direction is shown by arrow a in the figure.

The antenna 2 is arranged in the plastic part 1, the antenna 2 is made of metal, the antenna 2 comprises a main body part 21 and an extension part 22, and the extension part 22 is connected with the main body part 21 and extends towards the rear cover side 11. Specifically, the extension portion 22 extends toward the rear cover side 11 and a surface (the rear surface 221) of the extension portion 22 facing the rear cover side 11 serves as a wall surface of the adhesive surface 12, whereby the extension portion 22 can be adapted to increase the radiation area of the antenna 2 to enhance the radiation performance of the antenna 2. A comparison between the improvement of the radiation performance of the antenna 2 without the extension portion 22 before and the improvement of the radiation performance of the antenna 2 with the extension portion 22 after is listed in table 1.

Table 1 comparison of the radiation performance before improvement and the radiation performance of the antenna 2 with the extension 22 after improvement

	Before improvement	After improvement	Delta
				(B28/N28 frequency band) 0.76	-7.11	-6.36	0.75
(B20 frequency band) 0.8	-7.32	-6.57	0.75
				(B5/N5 frequency band) 0.85	-7.41	-6.59	0.82
(B5/N5 frequency band) 0.87	-7.67	-6.9	0.77
				(B8/N8 frequency band) 0.91	-7.82	-6.97	0.85
(B8/N8 frequency band) 0.95	-7.83	-6.99	0.84

From experimental results, the radiation efficiency of the antenna 2 can be greatly improved by changing the structure (adding the extension part 22), and the improvement amplitude is more than 0.7db, so that the user experience of conversation and surfing in the actually used 4G/5G network is improved, and the signal quality of the product is improved.

As shown in fig. 1, in some embodiments, the plastic member 1 has an inner side facing the middle frame 101 and an outer side away from the middle frame 101, and the middle frame 101 is located at the inner side of the plastic member 1. The extending portion 22 is located inside the main body portion 21, and a part of the extending portion 22 is connected to an inner side surface of the main body portion 21 in a thickness direction of the plastic part 1. For example, for one side (left side) of the plastic part 1, the inner side of the plastic part 1 is the right side of the side, the outer side of the plastic part 1 is the left side of the side, and the left-right direction is shown by the arrow B in fig. 1.

As shown in fig. 1, in some embodiments, the main body 21 is disposed opposite to the adhesive surface 12 in a thickness direction of the plastic part 1, and a projection of the main body 21 in the thickness direction of the plastic part 1 is located outside the screen slot 14. So that the OLED screen mounted in the screen slot 14 has less influence on the radiation performance of the main body portion 21. The inner side surface of the main body part 21 is a stepped surface, and the stepped surface can ensure that the main body part 21 is more stably structurally installed in the plastic part 1. Specifically, the step surface includes a first surface 212 and a second surface 213, and both the first surface 212 and the second surface 213 are inwardly facing surfaces. The first surface 212 is located inside the second surface 213 and the first surface 212 is located between the second surface 213 and the extension portion 22, and a portion of the first surface 212 adjacent to the rear cover side 11 is connected to an outward-facing surface of the extension portion 22. The projection of the first surface 212 in the thickness direction of the plastic 1 is located outside the screen groove 14, so that the projection of the main body 21 in the thickness direction of the plastic 1 is located outside the screen groove 14.

For example, the main body 21 is positioned directly below the adhesive surface 12, and the stepped surface includes a first surface 212 and a second surface 213 facing the right side. The upper portion of the first surface 212 is connected to the left surface of the extension 22, and the projection of the first surface 212 in the vertical direction is located on the left side of the screen slot 14.

As shown in fig. 1, in some embodiments, the main body portion 21 has a rear end surface 211 facing the rear cover side 11, and the distance between the rear end surface 211 of the main body portion 21 and the bottom wall surface 122 is not less than 0.4 mm. Therefore, the part between the bottom wall surface 122 of the plastic part 1 and the main body part 21 has a certain thickness, and the connecting part between the plastic part 1 and the rear cover has a vibration damping effect.

In some embodiments, the extension 22 is a predetermined distance from the screen slot 14, thereby allowing the radiation performance of the extension 22 to be less affected (lost) by the OLED screen mounted in the screen slot 14.

In some embodiments, the extension 22 extends into the adhesive surface 12, and the rear surface 221 (the surface facing the rear cover side 11) of the extension 22 is disposed coplanar with the adhesive surface 12. Thereby, the radiation area (cross-sectional area) of the extension portion 22 can be made larger, thereby increasing the radiation performance of the extension portion 22 and thus the radiation performance of the antenna 2.

As shown in fig. 1, in some embodiments, the adhesive surface 12 includes a first wall surface 121, a bottom wall surface 122, and a second wall surface 123 of the plastic part 1, which are sequentially arranged along the inside-outside direction, the first wall surface 121 is located inside the second wall surface 123 in the inside-outside direction of the plastic part 1, and the rear surface 221 of the extending portion 22 is arranged in a coplanar manner with the first wall surface 121. Thereby, when the adhesive surface 12 is mounted on the rear cover, the rear surface 221 of the extension portion 22 in the plastic member 1 is difficult to be seen from the edge portion (the transparent portion which is difficult to be dyed), and the electronic apparatus is more beautiful.

In some embodiments, the rear surface 221 of the extension portion 22 is provided with a plurality of grooves 222, the grooves 222 penetrate through the extension portion 22 along the inner and outer directions of the plastic part 1, and the grooves 222 are suitable for being embedded into a portion of the plastic part 1. Therefore, the connection between the plastic part 1 and the antenna 2 is stable, and the injection molding of the plastic part 1 is facilitated.

As shown in fig. 1 to 3, in some embodiments, the plastic member 1 includes a long side (a side attached to a long side of the middle frame 101), and the extending portion 22 is disposed on the long side of the plastic member 1. Specifically, the plastic part 1 includes two long sides and two short sides, and the two long sides all belong to the long side. The antenna 2 on the long side has a small radiation area (cross-sectional area), and the extension portion 22 provided on the long side can effectively increase the radiation performance of the antenna 2.

In some embodiments, the dimension of each groove 222 in the length direction of the long side of the plastic part 1 is greater than or equal to 1.7mm and less than or equal to 4.7mm, and the distance between two adjacent grooves 222 on the same long side of the plastic part 1 in the length direction of the long side of the plastic part 1 is greater than or equal to 7.5mm and less than or equal to 10.5 mm. This facilitates the flow of the injection molding compound during the injection molding of the plastic part 1.

In some embodiments, the dimension of each groove 222 in the length direction of the long side of the plastic part 1 is 3.2mm, and the distance between two adjacent grooves 222 on the same long side of the plastic part 1 in the length direction of the long side of the plastic part 1 is 9 mm.

The utility model also provides an electronic equipment, include according to the utility model discloses center antenna module 100. According to the utility model discloses electronic equipment includes cell-phone, flat board etc..

Therefore, according to the utility model discloses electronic equipment has the advantage that the radiation performance is strong.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations to the above embodiments by those of ordinary skill in the art are intended to be within the scope of the present invention.

Claims (12)

1. An intermediate frame antenna assembly, comprising:

a middle frame;

the plastic part is arranged on the outer peripheral surface of the middle frame in a surrounding mode and is provided with a rear cover side;

the antenna is arranged in the plastic part and comprises a main body part and an extension part, and the extension part is connected with the main body part and extends towards the rear cover side.

2. The middle frame antenna assembly according to claim 1, wherein the plastic member has an inner side facing the middle frame and an outer side facing away from the middle frame, the extending portion is located on the inner side of the main body portion, and a part of the extending portion is connected to an inner side surface of the main body portion in a thickness direction of the plastic member.

3. The center antenna assembly as recited in claim 2, wherein the rear cover side of the plastic part is provided with an adhesive surface, the extension extends into the adhesive surface, and a rear surface of the extension is disposed coplanar with the adhesive surface.

4. The center antenna assembly of claim 3, wherein the adhesive surface comprises a first wall surface, a bottom wall surface, and a second wall surface arranged in this order, the first wall surface being located inside the second wall surface in an inward-outward direction of the plastic part, and a rear surface of the extension portion being disposed coplanar with the first wall surface.

5. The middle frame antenna assembly as claimed in claim 4, wherein the rear surface of the extension portion is provided with a plurality of grooves extending through the extension portion along the inner and outer directions of the plastic member, the grooves being adapted to embed portions of the plastic member.

6. The middle frame antenna assembly according to claim 5, wherein the main body portion has a rear end surface facing the rear cover side, and a distance between the rear end surface of the main body portion and the bottom wall surface is not less than 0.4 mm.

7. The middle frame antenna assembly according to claim 1, wherein the inner side surface of the main body portion is a stepped surface.

8. The middle frame antenna assembly according to claim 7, wherein the step surface includes a first surface and a second surface, the first surface is located inside the second surface, the first surface is located between the second surface and the extending portion, the plastic member has a screen side arranged opposite to the rear cover side, the screen side is provided with a screen slot, and a projection of the first surface in a thickness direction of the plastic member is located outside the screen slot.

9. The middle frame antenna assembly as claimed in claim 6, wherein the plastic member includes a long side, and the extending portion is disposed on the long side of the plastic member.

10. The middle frame antenna assembly as claimed in claim 9, wherein each groove has a dimension in a length direction of a long side of the plastic member of 1.7mm or more and 4.7mm or less, and a distance between two adjacent grooves on the same long side of the plastic member in the length direction of the long side of the plastic member is 7.5mm or more and 10.5mm or less.

11. The midframe antenna assembly as claimed in claim 10, wherein each groove has a dimension of 3.2mm in a length direction of a long side of the plastic member, and a distance between two adjacent grooves on the same long side of the plastic member in the length direction of the long side of the plastic member is 9 mm.

12. An electronic device comprising a middle frame antenna assembly according to any one of claims 1 to 11.

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