CN214849019U

CN214849019U - Antenna assembly and electronic equipment

Info

Publication number: CN214849019U
Application number: CN202120649604.4U
Authority: CN
Inventors: 肖承军; 方福平
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-03-30
Filing date: 2021-03-30
Publication date: 2021-11-23
Anticipated expiration: 2031-03-30

Abstract

The application discloses an antenna assembly and an electronic device, the antenna assembly comprises a middle frame, an antenna bracket and an antenna module, wherein a slot is arranged on the inner side surface of the middle frame, a limiting bulge is arranged at the edge of the opening end of the slot, the limiting bulge is provided with a first limiting part and a second limiting part spaced from the first limiting part, the antenna bracket is provided with a third limiting part and a fourth limiting part, the antenna bracket is matched with the slot to limit the displacement of the antenna bracket along a first direction, the first limiting part is matched with the third limiting part to limit the displacement of the antenna bracket along a second direction, the second limiting part is matched with the fourth limiting part to limit the displacement of the antenna bracket along a third direction, the first direction, the second direction and the third direction are mutually perpendicular, the antenna module is fixed on the antenna bracket, the antenna bracket is firmly fixed to the middle frame, so that the yield of the antenna assembly is improved.

Description

Antenna assembly and electronic equipment

Technical Field

The application relates to the field of communication equipment, in particular to an antenna assembly and electronic equipment.

Background

At present, an antenna radiator is formed on an insert by adopting a laser forming technology, and then the insert is integrally formed with a middle frame by adopting an in-mold injection molding technology, so that the antenna radiator is combined with the middle frame. However, in such a manufacturing method, the insert is easily damaged in the in-mold injection process, and the damage is difficult to be found, which causes the antenna radiator to fail, so that the product yield is not high.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides an antenna assembly, wherein the antenna assembly comprises a middle frame, an antenna bracket and an antenna module, a slot is formed in the inner side surface of the middle frame, a limiting bulge is arranged at the edge of an opening end of the slot, the limiting bulge is provided with a first limiting part and a second limiting part spaced from the first limiting part, part of the antenna bracket is in inserting fit with the slot, the antenna bracket is provided with a third limiting part in limiting fit with the first limiting part and a fourth limiting part in limiting fit with the second limiting part, the antenna bracket is matched with the slot to limit the displacement of the antenna bracket relative to the middle frame along a first direction, the first limiting part is matched with the third limiting part to limit the displacement of the antenna bracket relative to the middle frame along a second direction, and the second limiting part is matched with the fourth limiting part, the antenna module is fixed on the antenna support, and the antenna support is limited to move along a third direction relative to the middle frame, the first direction, the second direction and the third direction are mutually vertical, and the antenna module is fixed on the antenna support.

The embodiment of the application provides an electronic equipment, wherein, electronic equipment includes foretell antenna module, electronic equipment still including fixed with the mainboard in the center, the mainboard electricity is connected the antenna radiator.

The antenna module and the electronic equipment provided by the embodiment of the application are characterized in that the antenna bracket is in plug-in fit with the slot, so that the antenna bracket is stable with the middle frame, the antenna module is fixed on the antenna bracket, the antenna module is stable in the middle frame, the antenna bracket is matched with the slot to realize the limitation of the first direction, the first limiting part is matched with the third limiting part to realize the limitation of the second direction, the second limiting part is matched with the fourth limiting part to realize the limitation of the third direction, and the first direction, the second direction and the third direction are mutually perpendicular, so that the antenna bracket is firmly fixed on the middle frame, and the yield of the antenna module is improved.

Drawings

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

Fig. 1 is an exploded schematic view of an antenna assembly provided by an embodiment of the present application;

FIG. 2 is an assembled schematic view of the antenna assembly of FIG. 1;

FIG. 3 is a cross-sectional schematic view III-III of the antenna assembly of FIG. 2;

FIG. 4 is a schematic cross-sectional view IV-IV of the antenna assembly of FIG. 2;

FIG. 5 is an assembled schematic view of an antenna backing and antenna module of the antenna assembly of FIG. 1;

FIG. 6 is an exploded view of an antenna backing and antenna module of the antenna assembly of FIG. 1;

fig. 7 is a schematic cross-sectional view of an electronic device provided in an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The embodiments listed in the present application may be appropriately combined with each other.

The terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments. For the sake of brevity, only some numerical ranges are explicitly disclosed herein. However, any lower limit may be combined with any upper limit to form ranges not explicitly recited; and any lower limit may be combined with any other lower limit to form a range not explicitly recited, and similarly any upper limit may be combined with any other upper limit to form a range not explicitly recited. Also, although not explicitly recited, each point or individual value between endpoints of a range is encompassed within the range. Thus, each point or individual value can form a range not explicitly recited as its own lower or upper limit in combination with any other point or individual value or in combination with other lower or upper limits. In the description herein, it is to be noted that, unless otherwise specified, "above" and "below" are inclusive of the present number, and "a plurality" of "one or more" means two or more. The above summary of the present invention is not intended to describe each disclosed embodiment or every implementation of the present invention. The following description more particularly exemplifies illustrative embodiments. At various points throughout this application, guidance is provided through a list of embodiments that can be used in various combinations. In each instance, the list is merely a representative group and should not be construed as exhaustive.

Referring to fig. 1, 2 and 3, the present application provides an antenna assembly 100, where the antenna assembly 100 includes a middle frame 10, an antenna support 20 and an antenna module 30. The inner side surface of the middle frame 10 is provided with a slot 11, and the edge of the opening end of the slot 11 is provided with a limit bulge 12. The position-limiting protrusion 12 is provided with a first position-limiting portion 121 and a second position-limiting portion 122 spaced from the first position-limiting portion 121. The antenna bracket 20 is partially inserted into the slot 11. The antenna bracket 20 is provided with a third limiting part 21 in limiting fit with the first limiting part 121 and a fourth limiting part 22 in limiting fit with the second limiting part 122. The antenna support 20 cooperates with the slot 11 to limit the displacement of the antenna support 20 relative to the middle frame 10 along the first direction X. The first position-limiting portion 121 and the third position-limiting portion 21 cooperate to limit the displacement of the antenna bracket 20 relative to the middle frame 10 along the second direction Z. The second position-limiting portion 122 cooperates with the fourth position-limiting portion 22 to limit the displacement of the antenna support 20 relative to the middle frame 10 along the third direction Y. The first direction X, the second direction Z and the third direction Y are perpendicular to each other, and the antenna module 30 is fixed on the antenna bracket 20. It is understood that the antenna assembly 100 is applicable to electronic devices, such as mobile phones, tablet computers, smart watches, headsets, and the like.

Through the antenna bracket 20 with the slot 11 cooperation of pegging graft for antenna bracket 20 is firm with center 10, and antenna module 30 is fixed in on the antenna bracket 20, makes antenna module 30 firm in center 10, antenna bracket 20 with the slot 11 cooperation realizes that first direction X is spacing, first spacing portion 121 with the cooperation of the spacing portion 21 of third realizes that second direction Z is spacing, the spacing portion 122 of second with the spacing portion 22 cooperation of fourth realizes that third direction Y is spacing, first direction X, second direction Z and third direction Y mutually perpendicular, thereby make antenna bracket 20 firm in center 10, thereby improve antenna module 100's yield.

In the present embodiment, the middle frame 10 has an outer peripheral side surface 101 and an inner peripheral side surface 102 opposed to the outer peripheral side surface 101. The outer peripheral side surface 101 is formed around the middle frame 10, and the inner peripheral side surface 102 is formed inside the middle frame 10. The insertion groove 11 is opened in the inner peripheral side surface 102 and extends toward the outer peripheral side surface 101. The slot 11 is a hollowed groove. The middle frame 10 also has a bottom portion 103 and a top portion 104 formed between the outer peripheral side surface 101 and the inner peripheral side surface 102. The bottom portion 103 is opposite the top portion 104. When the antenna assembly 100 is applied to the electronic device, the bottom part 103 and the top part 104 are fixedly connected with a back structure and a front structure respectively, the back structure can be a back cover, and the front structure can be a display screen assembly. The limiting protrusion 12 extends from the inner peripheral side surface 102 and is located at an opening end of the slot 11 adjacent to the bottom 103, so that the antenna bracket 20 is supported by the limiting protrusion 12. The first limiting portion 121 and the second limiting portion 122 are respectively disposed at the end of the limiting protrusion 12 far away from the slot 11.

In this embodiment, a part of the antenna holder 20 is inserted into the slot 11, and another part is located outside the slot 11. The third position-limiting portion 21 and the fourth position-limiting portion 22 are disposed on a portion of the antenna bracket 20 outside the slot 11. After the antenna bracket 20 is inserted into the slot 11, a part of the antenna bracket 20 abuts against the limiting protrusion 12, so that the first limiting portion 121 and the second limiting portion 122 are respectively in limiting fit with the third limiting portion 21 and the fourth limiting portion 22.

In this embodiment, the antenna module 30 is fixed on the surface of the antenna bracket 20, so that the antenna module 30 is supported by the antenna bracket 20, which facilitates the fixing of the antenna module 30 on the middle frame 10 and the electrical connection of the antenna module 30 and the power supply.

It is understood that the first direction X is the direction of the top portion 104 opposite to the bottom portion 103. The second direction Z is the protruding direction of the limiting protrusion 12, and the third direction Y is the length direction of the slot 11. The antenna support 20 is in limit fit with the middle frame 10 in the first direction X, the second direction Z and the third direction Y, so that the antenna support 20 is firmly fixed to the middle frame 10, and the antenna support 20 is convenient to mount on the middle frame 10.

Further, the antenna module 30 includes a flexible circuit board 31 and an antenna radiator 32 disposed on the flexible circuit board 31, and the flexible circuit board 31 is attached to the surface of the antenna bracket 20.

In this embodiment, the antenna bracket 20 has a first surface received in the slot 11 and a second surface adjacent to the limiting protrusion 12. The flexible circuit board 31 is attached to the first surface and the second surface, so that the flexible circuit board 31 is located between the antenna bracket 20 and the middle frame 10. The first surface and the second surface are both bending surfaces, and the flexible circuit board 31 is bent along with the first surface and the second surface.

Optionally, the antenna radiator 32 is a copper foil disposed on the flexible circuit board 31.

Optionally, the antenna radiator 32 is bonded to the flexible circuit board 31 through a double-sided adhesive layer.

Optionally, the antenna radiator 32 is disposed on a surface of the flexible circuit board 31 facing away from the antenna support 20.

Further, referring to fig. 2 to 6, the antenna bracket 20 is provided with a positioning column 23, and the flexible circuit board 31 is provided with a positioning hole 33 in positioning fit with the positioning column 23.

In this embodiment, the antenna bracket 20 is provided with a plurality of positioning pillars 23, and the positioning pillars 23 are arranged on the first surface and the second surface. The flexible circuit board 31 is provided with a plurality of positioning holes 33, and the plurality of positioning holes 33 penetrate through the flexible circuit board 31, so that the flexible circuit board 31 can be accurately positioned on the antenna support 20. The antenna radiator 32 avoids the positioning hole 33, so as to ensure the safety of the antenna radiator 32. The positioning column 23 penetrates through a double-sided adhesive layer between the flexible circuit board 31 and the antenna support 20, so that the flexible circuit board 31 is attached to the antenna support 20 in all directions, and the stability of the flexible circuit board 31 and the antenna support 20 is improved.

Further, the antenna bracket 20 includes an insertion block 24, an extension block 25 fixed to the insertion block 24, and a fastening block 26 fixed to the extension block 25, where the extension block 25 is fixed to one side of the insertion block 24 away from the bottom surface of the slot 11 and located outside the slot 11, the fastening block 26 is fixed to one end of the extension block 25 away from the insertion block 24, and the third limiting portion 21 and the fourth limiting portion 22 are disposed on the fastening block 26.

In this embodiment, the insertion block 24 has an insertion end surface 241 adjacent to the bottom surface of the insertion groove 11. The insertion end surface 241 is a bent surface. The flexible circuit board 31 partially adheres to the insertion end surface 241, so that the antenna module 30 partially adheres to the surface of the insertion block 24, so that the flexible circuit board 31 is partially secured between the bottom 103 of the slot 11 and the insertion block 24, thereby increasing the safety protection of the antenna module 30. The insertion block 24 further has two end side surfaces 242 oppositely arranged in the length direction of the slot 11, and the two end side surfaces 242 are in limit fit with two inner side surfaces in the length direction of the slot 11, so that the slot 11 limits the insertion block 24, that is, the antenna bracket 20 is limited in the length direction of the slot 11, and the length direction of the slot 11 is the first direction X. The insert piece 24 has an outer end face facing away from the bottom 103 of the insert groove 11. The outer end face is substantially adjacent to the opening of the socket 11. The extension block 25 extends from the outer end surface so that the extension block 25 is engaged with the stopper protrusion 12.

In the present embodiment, the extending direction of the extending block 25 is substantially perpendicular to the longitudinal direction of the slot 11 and perpendicular to the inner peripheral side surface 102 where the slot 11 is located. The extension block 25 has an extension face 251 adjacent to the extension protrusion. The normal direction of the extension plane 251 is substantially parallel to the second direction Z, i.e. the normal direction of the extension plane 251 can be regarded as the second direction Z. The extension surface 251 cooperates with a surface of the limiting protrusion 12 adjacent to the slot 11 to increase the stability of the antenna bracket 20 and the middle frame 10. Part of the flexible circuit board 31 is attached to the extending surface 251, so that the antenna module 30 is partially attached to the surface of the extending block 25. The extension block 25 extends from the insertion block 24, so that the antenna arrangement area of the antenna bracket 20 is increased, and the area of the antenna module 30 on the antenna bracket 20 is increased. The extending block 25 has a distance from two side surfaces parallel to the first direction X to two end side surfaces 242, so as to avoid the extending block 25 being too large, reduce the weight of the antenna support 20, and facilitate installation of the antenna support 20.

In this embodiment, the snap-in block 26 is connected to the end of the extension block 25 remote from the insertion block 24. The fastening block 26 has a middle portion 261 corresponding to the extension block 25 and two fastening end portions 262 located on both sides of the middle portion 261. The snap block 26 has a mating surface 263 that connects the extension surfaces 251. The extension face 251 and the mating face 263 together form the second surface, and the insertion end face 241 forms the first surface. The flexible circuit board 31 is partially attached to the mating surface 263, so that the antenna module 30 is partially attached to the surface of the fastening block 26. The third position-limiting portion 21 is disposed on the middle portion 261, and the fourth position-limiting portion 22 is disposed on the fastening end portion 262. The extending direction of the extending block 25 is substantially parallel to the third direction Y, that is, the extending direction of the extending block 25 can be regarded as the third direction Y.

After the antenna bracket 20 is inserted into the middle frame 10, two inner side surfaces of the slot 11 in the length direction limit the antenna bracket 20 to move in the first direction X, the first limiting portion 121 prevents the third limiting portion 21 from moving in the direction perpendicular to the extending surface 251, so that the antenna bracket 20 is limited in the second direction Z, and the fourth limiting portion 22 prevents the second limiting portion 122 from moving in the extending direction of the extending block 25, so that the antenna bracket 20 is limited in the third direction Y.

Further, the middle frame 10 has two opposite first side portions 13 and two opposite second side portions 14, the two first side portions 13 and the two second side portions 14 are sequentially connected in a staggered manner to form a rectangular frame, the slot 11 is disposed on one of the first side portions 13, an extending direction of the slot 11 is parallel to a length direction of the first side portion 13, the first direction X is parallel to an extending direction of the slot 11, an extending direction of the extending block 25 is perpendicular to the first direction X and parallel to a length direction of the second side portion 14, and a length direction of the fastening block 26 is parallel to the first direction X.

In the present embodiment, the first side portion 13 and the second side portion 14 are both peripheral structures of the center frame 10. The first side edge portion 13 and the second side edge portion 14 each extend along a straight line. The longitudinal direction of the first side edge portion 13 and the longitudinal direction of the second side edge portion 14 are perpendicular to each other. The two first side edge portions 13 are connected between the two second side edge portions 14. The slot 11 extends along the length of the first side portion 13. One of the first side portions 13 has a rim inner side 131. The slot 11 is disposed on the inner side 131 of the frame. The snap-in block 26 is spaced from the first side edge 13.

More specifically, the first limiting portion 121 is a clamping plate disposed in the middle of the limiting protrusion 12. The first stopper 121 has a first stopper surface 1211 parallel to the longitudinal direction of the first side portion 13 and parallel to the longitudinal direction of the second side portion 14. The first position-limiting surface 1211 is disposed on a side of the first position-limiting portion 121 away from the top portion 104. The third limiting portion 21 is a hook disposed on the middle portion 261. The third limiting portion 21 extends and bends in a direction away from the top portion 104 so as to hook the first limiting surface 1211, that is, a clamping groove is formed between the end portion of the third limiting portion 21 and the middle portion 261, so that the first limiting portion 121 is clamped into the clamping groove, and the limiting matching of the first limiting portion 121 and the third limiting portion 21 is realized. The second limiting portion 122 is a hook disposed at two ends of the limiting protrusion 12 in the length direction. The fourth position-limiting portion 22 is a stop block disposed on one surface of the fastening end 262 facing the top portion 104. The second position-limiting portion 122 can hook the side surface 221 of the fourth position-limiting portion 22 parallel to the length direction of the first side portion 13 and perpendicular to the length direction of the second side portion 14, so that the second position-limiting portion 122 and the fourth position-limiting portion 22 are in position-limiting fit, and the second position-limiting portion 122 can prevent the fourth position-limiting portion 22 from moving in the third direction Y.

Further, the protruding direction of the limiting protrusion 12 is parallel to the length direction of the second side portion 14, the limiting protrusion 12 corresponds to the two ends of the slot 11 in the length direction and is provided with two first bumps 123 and two second bumps 124 between the first bumps 123, the first limiting portion 121 and the second limiting portion 122 are respectively arranged on the first bumps 123 and the second bumps 124, the antenna bracket 20 is provided with two third limiting portions 21, two third limiting portions 21 are respectively arranged at two ends of the fastening block 26, and the fourth limiting portion 22 is arranged between the two third limiting portions 21.

In this embodiment, the first position-limiting part 121 extends from the end of the first protrusion 123 far away from the insertion block 24. The end face of the first protruding block 123 far away from the inserting block 24 is provided with a groove, and the first limiting portion 121 extends from the bottom surface of the groove, so that the third limiting portion 21 is inserted into the groove to be in limiting fit with the first limiting portion 121, and therefore the matching stability of the first limiting portion 121 and the third limiting portion 21 is improved. The second limiting portion 122 extends from the end surface of the second bump 124 away from the insertion block 24, and bends towards the bottom 103 to extend out of a hook. Utilize both ends of spacing arch 12 respectively with the spacing cooperation in both ends of lock joint piece 26, the centre of spacing arch 12 with the spacing cooperation in the middle of lock joint piece 26 to realize antenna boom 20 with the steadiness of spacing arch 12 increases, prevents antenna boom 20 from rocking on center 10, and is convenient for antenna boom 20 install in center 10.

Further, the first protrusion 123 is provided with a guide strip 1231, and the extension block 25 is provided with a guide slot 251 matched with the guide strip 1231.

In this embodiment, the guide strip 1231 is disposed on a surface of the first protrusion 123 facing the top portion 104. The guide groove 251 is disposed on the extension surface 251. The flexible circuit board 31 avoids the guide groove 251, so that the antenna support 20 is guided to cooperate with the extension protrusion, and the antenna support 20 is inserted into the slot 11. Specifically, the flexible circuit board 31 has a first portion 311 attached to the insert block 24 and two second portions 312 extending from the first portion 311. The two second portions 312 are attached to the extension block 25 and located at two sides of the guide groove 251. The flexible circuit board 31 further has two third portions 313, and the two third portions 313 extend from the second portion 312 and extend to two outer sides, so that the third portions 313 are attached to the fastening end portions 262 of the fastening blocks 26. The two end portions of the insertion block 24, the two fastening end portions 262, and the middle portion 261 are all provided with the positioning posts 23, so that the antenna holder 20 can position the flexible circuit board 31 at multiple positions, and the flexible circuit board 31 is prevented from being dislocated relative to the antenna holder 20.

Further, the first protruding block 123 and the second protruding block 124 are staggered in the second direction Z, and the third limiting portion 21 and the fourth limiting portion 22 are respectively located on two opposite surfaces of the fastening block 26 in the second direction Z.

In this embodiment, the first protruding block 123 and the second protruding block 124 are respectively close to the bottom 103 and the top 104 on the end surface of the limiting protrusion 12, so that after the third limiting portion 21 and the fourth limiting portion 22 are respectively in limiting fit with the first limiting portion 121 and the second limiting portion 122, the antenna bracket 20 forms a clamping force on the limiting protrusion 12, so that the antenna bracket 20 is fixed on the limiting protrusion 12. To facilitate the second protrusion 124 to be snapped into the fourth position-limiting portion 22 of the snap-fit block 26. The fastening end 262 of the fastening block 26 is bent relative to the middle portion 261 to raise the fitting surface 263 between the fourth position-limiting portion 22 and the second position-limiting portion 122, so that the fourth position-limiting portion 22 is fit with the second position-limiting portion 122 in a limited manner.

Further, the antenna module 30 is provided with feeding points 301 corresponding to two ends of the length direction of the fastening block 26.

In this embodiment, the feeding point 301 is disposed at the third portion 313 of the flexible circuit board 31. The feeding point 301 is an exposed copper region of the third portion 313 corresponding to the fastening end 262. The fastening end 262 provides a flat supporting surface for the feeding point 301, thereby facilitating the electrical connection between the feeding point 301 and the power supply of the motherboard. The feeding point 301 is disposed on a surface of the flexible circuit board 31 facing away from the fastening block 26, so that the feeding point 301 is electrically connected to a feeding source.

Referring to fig. 7, in an embodiment of the present application, an electronic device 200 is further provided, where the electronic device 200 includes the antenna assembly 100, the electronic device 200 further includes a main board 210 fixed in the middle frame 10, and the main board 210 is electrically connected to the antenna radiator 32. It is understood that the electronic device 200 is a mobile phone, a tablet computer, a smart watch, a headset, or the like.

In this embodiment, the main board 210 is provided with an elastic sheet 220 and a feeding source 230, the feeding source 230 is electrically connected to the elastic sheet 220, and the elastic sheet 220 elastically abuts against the feeding point 301 of the flexible circuit board 31, so that the feeding source 230 is electrically connected to the antenna module 30. The electronic device 200 further includes a display screen assembly 240 secured to the top portion 104 and a back cover 250 secured to the bottom portion 103. A containing cavity is formed between the display screen assembly 240 and the back cover 250, and the main board 210, the antenna bracket 20 and the antenna module 30 are contained in the containing cavity, so that the main board 210, the antenna bracket 20 and the antenna module 30 are protected.

The foregoing is a preferred embodiment of the application, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the application principle, and these improvements and modifications are also considered as the protection scope of the application.

Claims

1. An antenna assembly, comprising a middle frame, an antenna bracket and an antenna module, wherein a slot is formed on the inner side surface of the middle frame, a limiting protrusion is arranged at the edge of an opening end of the slot, the limiting protrusion is provided with a first limiting part and a second limiting part spaced from the first limiting part, a part of the antenna bracket is in plug-in fit with the slot, the antenna bracket is provided with a third limiting part in limiting fit with the first limiting part and a fourth limiting part in limiting fit with the second limiting part, the antenna bracket is matched with the slot to limit the displacement of the antenna bracket relative to the middle frame along a first direction, the first limiting part is matched with the third limiting part to limit the displacement of the antenna bracket relative to the middle frame along a second direction, and the second limiting part is matched with the fourth limiting part, the antenna module is fixed on the antenna support, and the antenna support is limited to move along a third direction relative to the middle frame, the first direction, the second direction and the third direction are mutually vertical, and the antenna module is fixed on the antenna support.

2. The antenna assembly of claim 1, wherein the antenna module comprises a flexible circuit board and an antenna radiator disposed on the flexible circuit board, the flexible circuit board being attached to a surface of the antenna bracket.

3. The antenna assembly of claim 2, wherein the antenna bracket is provided with a positioning post, and the flexible circuit board is provided with a positioning hole for positioning and matching with the positioning post.

4. The antenna assembly of claim 1, wherein the antenna bracket includes an insertion block, an extension block fixed to the insertion block, and a fastening block fixed to the extension block, the extension block is fixed to a side of the insertion block away from the bottom surface of the slot and located outside the slot, the fastening block is fixed to an end of the extension block away from the insertion block, and the third limiting portion and the fourth limiting portion are disposed on the fastening block.

5. The antenna assembly of claim 4, wherein the antenna module is attached to a surface of the insertion block, a surface of the extension block, and a surface of the fastening block, and the antenna module is partially received in the slot.

6. The antenna assembly of claim 4, wherein the middle frame has two opposite first side portions and two opposite second side portions, the two first side portions and the two second side portions are sequentially connected in an alternating manner to form a rectangular frame, the slot is disposed on one of the first side portions and extends in a direction parallel to a length direction of the first side portion, the first direction is parallel to an extending direction of the slot, the extending direction of the extension block is perpendicular to the first direction and parallel to a length direction of the second side portion, and the length direction of the fastening block is parallel to the first direction.

7. The antenna assembly according to claim 6, wherein the protruding direction of the limiting protrusion is parallel to the length direction of the second side portion, two first protruding blocks are disposed at two ends of the limiting protrusion corresponding to the length direction of the slot, and a second protruding block is disposed between the two first protruding blocks, the first limiting portion and the second limiting portion are respectively disposed on the first protruding block and the second protruding block, the antenna bracket is provided with two third limiting portions, the two third limiting portions are respectively disposed at two ends of the fastening block, and the fourth limiting portion is disposed between the two third limiting portions.

8. The antenna assembly of claim 7, wherein the first protrusion is provided with a guide strip, and the extension block is provided with a guide slot that mates with the guide strip.

9. The antenna assembly of claim 7, wherein the first protrusion and the second protrusion are staggered in the second direction, and the third limiting portion and the fourth limiting portion are located on two opposite sides of the fastening block in the second direction.

10. The antenna assembly of claim 7, wherein the antenna module has feeding points corresponding to the ends of the length of the fastening block.

11. An electronic device, wherein the electronic device comprises the antenna assembly of any one of claims 1-10, and further comprising a main board fixed to the inner frame, the main board electrically connected to an antenna radiator of the antenna module.