阅读说明：本技术 板载天线盖及具有板载天线的主机结构 (Onboard antenna cover and host structure with onboard antenna ) 是由 刘成武 于 2021-09-30 设计创作，主要内容包括：本发明公开了一种板载天线盖,用于遮盖设于一主机中电路板的天线安装部分,包括具有容纳腔的壳体,所述容纳腔用于容纳所述天线安装部分,所述壳体包括与电路板板面相对的第一腔壁和第二腔壁,以及连接第一腔壁和第二腔壁的侧壁,所述第一腔壁形成所述容纳腔入口的前边沿向远离所述容纳腔的方向延伸形成第一卡合部,所述第二腔壁形成所述容纳腔入口的前边沿向外凸设有若干具有一定间距的弹性臂,所述弹性臂可提供沿所述壳体的上下方向的弹力并在所述壳体的上下方向变形弯曲,所述弹性臂的末端向远离所述容纳腔的方向延伸形成第二卡合部。本发明还公开了一种对应的具有板载天线的主机结构,其板载天线盖与主机的壳体组装时,无需螺丝且连接稳定。(The invention discloses a board-mounted antenna cover which is used for covering an antenna installation part of a circuit board arranged in a host and comprises a shell with an accommodating cavity, wherein the accommodating cavity is used for accommodating the antenna installation part, the shell comprises a first cavity wall, a second cavity wall and a side wall, the first cavity wall and the second cavity wall are opposite to the board surface of the circuit board, the side wall is connected with the first cavity wall and the second cavity wall, the front edge of the first cavity wall, which forms an inlet of the accommodating cavity, extends towards the direction far away from the accommodating cavity to form a first clamping part, the front edge of the second cavity wall, which forms the inlet of the accommodating cavity, is provided with a plurality of elastic arms with certain intervals in an outward protruding mode, the elastic arms can provide elasticity along the vertical direction of the shell and deform and bend along the vertical direction of the shell, and the tail ends of the elastic arms extend towards the direction far away from the accommodating cavity to form a second clamping part. The invention also discloses a corresponding host machine structure with the onboard antenna, and when the onboard antenna cover is assembled with the shell of the host machine, the onboard antenna cover does not need screws and is stably connected.)

1. The utility model provides a board carries antenna cover for cover locates the antenna installation part of circuit board in a host computer, including having the casing that holds the chamber, it is used for holding to hold the antenna installation part to hold the chamber, the casing includes relative first chamber wall, second chamber wall from top to bottom, connects the lateral wall in first chamber wall and second chamber wall, and communicates hold the entry in chamber, its characterized in that: the first cavity wall extends in the direction far away from the accommodating cavity to form a first clamping portion, the front edge of the inlet of the accommodating cavity is formed by the second cavity wall and is provided with a plurality of elastic arms with certain intervals in an outward protruding mode, the elastic arms can provide elastic force in the vertical direction of the shell and deform and bend in the vertical direction of the shell, and the tail ends of the elastic arms extend in the direction far away from the accommodating cavity to form a second clamping portion.

2. An on-board antenna cover as defined in claim 1, wherein: the inner sides of the first clamping part and the second clamping part are respectively provided with a convex block in a protruding mode, the convex block extends to the first cavity wall and the elastic arm, and the tail end, far away from the containing cavity, of the convex block is in a wedge shape.

3. An on-board antenna cover as defined in claim 1, wherein: the front edge of the side wall extends to a direction far away from the accommodating cavity to form a reinforcing wall, one end of the reinforcing wall extends to the edge of the first cavity wall, and the other end of the reinforcing wall is connected with the first clamping part.

4. An on-board antenna cover as defined in claim 3, wherein: the second clamping part and the reinforcing wall are provided with a through positioning groove therebetween, and the inlet of the positioning groove is gradually enlarged outwards.

5. An on-board antenna cover as defined in claim 1, wherein: the first cavity wall extends inwards from the front edge to form a positioning groove penetrating through the first clamping part and the first cavity wall, and an opening of the positioning groove is gradually enlarged.

6. An on-board antenna cover as defined in claim 1, wherein: the antenna mounting part is positioned at one corner of the circuit board and is triangular, and the first cavity wall and the second cavity wall are respectively opposite to the antenna mounting part and are correspondingly triangular.

7. An on-board antenna cover as defined in claim 1, wherein: the elastic arm is straight along the extending direction of the elastic arm under the natural state or comprises a bending structure which is far away from the accommodating cavity.

8. An on-board antenna cover as defined in claim 1, wherein: one or more through grooves are formed in the elastic arm, and the through grooves are arranged at a certain interval along the corresponding edge.

9. An on-board antenna cover as defined in claim 1, wherein: the first clamping part is a clamping wall or a clamping groove arranged along the front edge of the first cavity wall, and the second clamping part is a clamping wall or a clamping groove arranged along the front edge of the second cavity wall.

10. The utility model provides a host computer structure with board carries antenna, includes first lid, second lid, circuit board and antenna cover, the circuit board is including the main installation part of installation host computer main circuit and the antenna installation part of installation antenna, but first lid and second lid cooperation form and hold the installation cavity of main installation part, be equipped with the antenna export on the installation cavity, the antenna installation part is followed the antenna export stretches out outside the installation cavity, its characterized in that: the antenna cover is the onboard antenna cover as claimed in any one of claims 1 to 9, the antenna mounting portion is accommodated in the accommodating cavity, the first cover and the second cover form a first clamping portion and a second clamping portion which are clamped with the first clamping portion and the second clamping portion respectively and convexly arranged at positions where the antenna outlets are formed, the first cover and the second cover are installed in a matched mode from the front side and the back side of the circuit board, the first clamping portion is connected with the first clamping portion in a clamped mode, the second clamping portion is connected with the second clamping portion in a clamped mode, and the elastic arm provides elastic force for abutting against the second clamping portion, so that the antenna cover is fixedly clamped by the first cover and the second cover.

11. The host architecture of claim 10, wherein: the front edge of the second cavity wall is also convexly provided with a reinforcing wall which has a certain distance with the second clamping part, a positioning groove which penetrates through the first cavity wall is formed between the reinforcing wall and the second clamping part, and a positioning bulge which can extend into the positioning groove and is clamped and connected with the positioning groove is formed on the second cover.

12. The host architecture of claim 10, wherein: the first clamping part is provided with a positioning groove which penetrates through the first clamping part along the direction vertical to the edge corresponding to the first cavity wall, and the first cover is provided with a positioning bulge which can extend into the positioning groove and is clamped and connected with the positioning groove.

13. The host architecture of claim 10, wherein: a shielding region is arranged between the main mounting part and the antenna mounting part, the first cover is arranged at the position opposite to the shielding region, a shielding convex strip is arranged at the position opposite to the shielding region, the second cover is arranged at the position opposite to the shielding region, and a conductive adhesive layer is arranged between the shielding convex strip and the circuit board.

14. The host architecture of claim 13, wherein: the first clamping portion, the second clamping portion, the first clamping portion and the second clamping portion are clamping walls, the first clamping portion and the second clamping portion are respectively spaced from the shielding raised strips, and a first clamping groove and a second clamping groove which can accommodate the first clamping portion and the second clamping portion in a matched mode are formed, so that the first clamping portion and the second clamping portion are clamped in the first clamping groove and the second clamping groove respectively.

Technical Field

The present invention relates to a design of an antenna cover and a circuit board mounting structure of a main unit having an on-board antenna.

Background

In an existing automobile host, an on-board antenna is often adopted, and an antenna unit of the on-board antenna is formed on a host circuit board, that is, a main circuit installation area of the host and an antenna installation area of the antenna are formed on the circuit board. The antenna installation region of circuit board stretches out this shielding case from an opening of this shell lateral part, antenna cover lid is in the antenna installation region and together through plastic buckle and 1 fix with screw, not only need buckle counterpoint and lock the screw installation, still often because shielding case's border needs to fill conducting resin and carries out EMC shielding, so need form certain clearance between formation open-ended shielding case edge and the mainboard, when making the lock screw installation, because clearance precision and matching degree problem, make antenna cover perk, cause the screw to pay the hole site and not align, need do anchor clamps and prepress once more, further increased equipment and automation operation degree of difficulty.

To this end, in CN201911416717.3, a vehicle multimedia host structure is disclosed, in which an installation guide slot is formed at the edge of an antenna cover, an antenna through hole for an antenna to pass through is formed on a chassis, a bump is formed at the position of the antenna through hole, when assembling, the antenna cover is sleeved on the antenna and inserted downwards from the open end of the antenna through hole, so that the installation guide slot of the antenna cover is correspondingly inserted on a guide block, and then a bottom cover is covered on the chassis, so that the positioning insertion block is positioned in the installation guide slot, although this way does not need to be locked and fixed by screws, because of the requirement of filling conductive adhesive, a certain distance needs to be left between the edge of the chassis where the antenna through hole is formed and the edge of the bottom cover, at this time, if the left distance is too small, it is difficult to make the conductive adhesive evenly arranged between the host circuit and the antenna circuit to effectively shield, if the left distance is too large, the antenna cover is easily clamped and unstable, the conductive adhesive is easy to fall off, and the conductive adhesive is arranged at the edge zone of the case, so that the conductive adhesive is easy to age and fall off, the shielding effect is poor, and the durability is poor.

Therefore, an antenna cover mounting structure and a host structure for a vehicle-mounted multimedia host that can solve the above problems are urgently needed.

Disclosure of Invention

The invention aims to provide a board-mounted antenna cover and a host structure, wherein the stability of connection between the antenna cover and a shell of the host is high.

In order to achieve the above object, the present invention discloses a board-mounted antenna cover for covering an antenna mounting portion of a circuit board provided in a main body, including a housing having a receiving cavity, the accommodating cavity is used for accommodating the antenna mounting part, the shell comprises a first cavity wall and a second cavity wall which are opposite to the circuit board surface, and a side wall connecting the first cavity wall and the second cavity wall, wherein the front edge of the first cavity wall forming the inlet of the accommodating cavity extends in the direction far away from the accommodating cavity to form a first clamping part, the front edge of the second cavity wall forming the inlet of the accommodating cavity is provided with a plurality of elastic arms with certain intervals in an outward protruding way, the elastic arm can provide elastic force along the vertical direction of the shell and can deform and bend along the vertical direction of the shell, and the tail end of the elastic arm extends to the direction far away from the accommodating cavity to form a second clamping part.

Compared with the prior art, the onboard antenna cover can be clamped and connected with the shell of the host, and the elastic arm capable of elastically deforming in the vertical direction is arranged on the first cavity wall or the second cavity wall of the onboard antenna cover, so that the mounting shell of the host can extrude and clamp the antenna cover from the vertical direction of the antenna cover, the connection stability is high, the onboard antenna cover is not easy to fall off, and the durability is good. On the other hand, the elastic arm is formed by extending the edge of the second cavity wall forwards, when the shell of the host machine extrudes and fixes the antenna cover, the shell can be directly pressed on the elastic arm or the first cavity wall, and the shell is directly contacted with the outer surface of the first cavity wall, so that the stability of the antenna cover is further improved, and the position offset of the antenna cover relative to the shell during long-time use is prevented.

Preferably, the inner sides of the first clamping portion and the second clamping portion are respectively provided with a protruding block protruding to the first cavity wall and the elastic arm, and the tail end of the protruding block far away from the accommodating cavity is wedge-shaped.

Preferably, the front edge of the side wall extends in a direction away from the accommodating cavity to form a reinforcing wall, one end of the reinforcing wall extends to the edge of the first cavity wall, and the other end of the reinforcing wall is connected with the first clamping part. The strength of the antenna cover is effectively enhanced, and the body of the antenna cover is prevented from deforming during extrusion.

Specifically, a through positioning groove is formed between the second clamping portion and the reinforcing wall, and an inlet of the positioning groove is gradually enlarged outwards. The detent is used to prevent lateral movement of the antenna cover during assembly.

Preferably, the first cavity wall extends inward from the front edge to form a positioning groove penetrating through the first clamping portion and the first cavity wall, and an opening of the positioning groove is gradually enlarged.

Preferably, the antenna mounting portion is located at one corner of the circuit board and is triangular, and the first cavity wall and the second cavity wall are respectively opposite to the antenna mounting portion and are triangular correspondingly. The arrangement saves space, and the assembled host is in a regular shape, does not have obvious protruding places, and is convenient to install on a control console of the whole vehicle.

Preferably, the elastic arm is straight along the extending direction of the elastic arm in a natural state or comprises a bending structure which is far away from the accommodating cavity.

Preferably, the elastic arm is provided with one or more through slots, and the through slots are arranged at a certain interval along the corresponding edge.

Preferably, the first engaging portion is an engaging wall or an engaging groove disposed along a front edge of the first cavity wall, and the second engaging portion is an engaging wall or an engaging groove disposed along a front edge of the second cavity wall.

The invention also discloses a host structure with an onboard antenna, which comprises a first cover, a second cover, a circuit board and an antenna cover, wherein the circuit board comprises a main mounting part for mounting a host main circuit and an antenna mounting part for mounting the antenna, the first cover and the second cover can be matched to form a mounting cavity for accommodating the main mounting part, an antenna outlet is arranged on the mounting cavity, and the antenna mounting part extends out of the mounting cavity from the antenna outlet, and the host structure is characterized in that: the antenna cover be last board carry the antenna cover, the antenna installation part hold in hold the intracavity, first lid and second lid form the position of antenna export respectively protruding be equipped with first joint portion and the second joint portion of first block portion and second block portion block, just first lid and second lid are followed the cooperation installation of circuit board tow sides, and make first joint portion with first block portion block is connected, second joint portion with second block portion block is connected, the elasticity arm is right second joint portion provides the elasticity of contradicting, makes first lid and second lid clamp fastening are decided the antenna cover.

Compared with the prior art, the onboard antenna cover is connected with the first cover and the second cover in a clamping mode, the onboard antenna cover can be fixed on the host machine only by assembling and fixing the first cover and the second cover without screws, the first cavity wall or the second cavity wall of the onboard antenna cover is provided with the elastic arm capable of elastically deforming in the vertical direction, when a circuit board is installed in the cover body, the first cover and the second cover can be used for clamping and elastically clamping the antenna cover from the upper side and the lower side, the connection stability is high, the antenna cover is not prone to falling off, and the durability is good.

Preferably, a reinforcing wall having a certain distance from the second engaging portion is further convexly disposed at the front edge of the second cavity wall, a positioning groove penetrating through the first cavity wall is formed between the reinforcing wall and the second engaging portion, and a positioning protrusion extending into the positioning groove and engaged with the positioning groove is formed on the second cover. The antenna cover is convenient to be positioned transversely (perpendicular to the positioning direction of the first clamping part and parallel to the extending direction of the circuit board) after being assembled,

preferably, the first engaging portion has a positioning groove extending through the first engaging portion along a direction perpendicular to the edge of the first cavity wall, and the first cover has a positioning protrusion extending into the positioning groove and engaged with the positioning groove. The antenna cover is convenient to be positioned transversely (perpendicular to the positioning direction of the first clamping part and parallel to the extending direction of the circuit board) after being assembled,

preferably, a shielding region is arranged between the main mounting portion and the antenna mounting portion, the first cover is provided with a shielding convex strip in a protruding mode at a position opposite to the shielding region, the second cover is provided with a shielding convex strip in a protruding mode at a position opposite to the shielding region, and a conductive adhesive layer is arranged between the shielding convex strip and the circuit board.

Specifically, the first clamping portion, the second clamping portion, the first clamping portion and the second clamping portion are clamping walls, the first clamping portion and the second clamping portion respectively have a certain distance from the shielding raised strip, and a first clamping groove and a second clamping groove which can accommodate the first clamping portion and the second clamping portion in a matched manner are formed, so that the first clamping portion and the second clamping portion are respectively clamped in the first clamping groove and the second clamping groove. This scheme makes this application main circuit part and board carry the shielding between the antenna part effectual, prevents main circuit part and support plate antenna part mutual interference, also makes the antenna cover to go up only to set up a block portion, and simple structure easily assembles.

Drawings

FIG. 1 is a schematic view of an angle of the host structure with an on-board antenna of the present invention.

Fig. 2 is a schematic view of another angle of the host structure with an on-board antenna of the present invention.

Fig. 3 is an exploded view of one angle of the host structure with the on-board antenna of the present invention.

Fig. 4 is an exploded schematic view from another perspective of the host structure of the present invention having an on-board antenna.

Fig. 5 is a cross-sectional view of a host structure of the present invention having an on-board antenna.

Fig. 6 is a schematic view of an angle structure of the antenna cover of the present invention.

Fig. 7 is a schematic view of another angle structure of the antenna cover of the present invention.

Fig. 8 is a schematic view of a structure of an antenna cover according to still another angle.

Fig. 9 is a cross-sectional view of an antenna cover of the present invention.

Fig. 10 is a schematic structural diagram of an antenna cover in a second embodiment of the present invention.

Fig. 11 is a schematic structural diagram of an antenna cover in a third embodiment of the present invention.

Fig. 12 is a schematic structural diagram of an antenna cover in a fourth embodiment of the present invention.

Detailed Description

In order to explain technical contents, structural features, and objects and effects of the present invention in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.

Referring to fig. 1 to 4, the present invention further discloses a host structure 100 with an on-board antenna, including an upper cover 30, a lower cover 40, a circuit board 20 and an antenna cover 10, where the circuit board 20 includes a main mounting portion 22 for mounting a host main circuit and an antenna mounting portion 21 for mounting an antenna, the upper cover 30 and the lower cover 40 can cooperate to form a mounting cavity 23 for accommodating and mounting the main mounting portion 22, an antenna outlet is provided on the mounting cavity 23, the antenna mounting portion 21 extends from the antenna outlet and is located outside the mounting cavity 23, and the antenna cover 10 is mounted on the upper cover 30 and the lower cover 40 and covers the antenna mounting portion 21. The circuit board 20 is a circuit board of a host. The relative position of the upper cover 40 and the lower cover 40 does not mean that the upper cover 30 must be positioned above the lower cover 40.

In this embodiment, the host with the onboard antenna is a multimedia host and is a vehicle-mounted multimedia host.

Referring to fig. 5 to 9, the antenna cover 10 includes a housing 11 having a receiving cavity 111, the receiving cavity 111 is used for receiving the antenna mounting portion 21, the housing 11 includes an upper cavity wall 112 and a lower cavity wall 113 which are opposite to each other, and a side wall 114 connecting the upper cavity wall 112 and the lower cavity wall 113, and an inlet communicating with the receiving cavity 111, the antenna mounting portion 21 extends into the receiving cavity 111 from the inlet of the receiving cavity 111, and a plate surface of the antenna mounting portion 21 is opposite to the upper cavity wall 112 and the lower cavity wall 113.

With continued reference to fig. 5 to 9, the upper chamber wall 112 extends in a direction away from the accommodating chamber 111 to form a first engaging portion 12, a front edge of the lower chamber wall 113 forming an entrance of the accommodating chamber 111 is provided with a plurality of elastic arms 13 protruding outward at certain intervals, the elastic arms 13 can provide elastic force in the vertical direction of the housing 11 and deform and bend in the vertical direction of the housing 11, and a distal end of each elastic arm 13 extends in a direction away from the accommodating chamber 111 to form a second engaging portion 14. The plate surfaces of the antenna mounting portion 21 are disposed opposite to the upper and lower cavity walls 112 and 113, respectively. The upper cavity wall 112 and the lower cavity wall 113 are in a relative position relationship, and are not limited to being located above and below the actual space.

In this embodiment, the elastic arm 13 is formed by inwardly opening a plurality of through spaced slots on the front edge of the lower cavity wall 113.

The first engaging portion 12 is formed on the front edge of the upper cavity wall 112 forming the entrance of the accommodating cavity 111, and the position of the first engaging portion 12 is not limited to the edge, and may be provided at a certain distance from the front edge.

In this embodiment, the elastic arm 13 and the second engaging portion 14 are located on the lower cavity wall 113, and the first engaging portion 12 is located on the upper cavity wall 112. Of course, the elastic arm 13 and the second engaging portion 14 may be located on the upper cavity wall 112, and the first engaging portion 12 may be located on the lower cavity wall 113.

In this embodiment, the elastic arms 13 are only located on one of the lower cavity wall 113 and the upper cavity wall 114, however, there may be two sets of elastic arms 13 respectively located on the upper cavity wall 112 and the lower cavity wall 114, and the first engaging portion 12 and the second engaging portion 14 are correspondingly and convexly located on the two sets of elastic arms 13 and are oppositely disposed.

Referring to fig. 1 to 4, the upper cover 30 forms a first clamping portion 31 protruding from the position of the antenna outlet, the lower cover 40 forms a second clamping portion 41 protruding from the position of the antenna outlet, the first clamping portion 31 and the second clamping portion 41 are oppositely disposed 1, the first clamping portion 31 is clamped with the first clamping portion 12, and the second clamping portion 41 is clamped with the second clamping portion 14. The antenna cover 10 is mounted on the antenna mounting portion 21 with the antenna mounting portion 21 being located in the accommodation chamber 111. The upper cover 30 and the lower cover 40 are respectively mounted from the upper side and the lower side of the circuit board 20 so that the main mounting portion 22 is located in the mounting cavity 23, the first clamping portion 31 is clamped and connected with the first clamping portion 12, the second clamping portion 41 is clamped and connected with the second clamping portion 14, and the elastic arm 13 provides downward elastic force to the lower cover 40, so that the upper cover 30 and the lower cover 40 clamp and fix the antenna cover 10 from the up-down direction of the antenna cover 10.

Wherein the flexible arm 13 is formed by the second chamber wall 114 extending smoothly outwards. In particular, the ends of the flexible arms 13 that are connected to the edges of the second chamber wall 114 have a length that is at the same height and parallel to the outer surface of the first chamber wall 114.

In this embodiment, the upper cover 30 is engaged with the first engaging portion 12, and the end of the first engaging portion 12 is abutted against the corresponding position of the upper cover 30. Of course, the first engagement portion 31 may abut against the upper cavity wall 112.

In this embodiment, the lower cover 40 is engaged with the second engaging portion 14, and the end of the second engaging portion 14 is abutted against the corresponding position of the lower cover 40, the lower cover 40 presses the second engaging portion 14 upwards, and then the elastic arm 13 is driven to deform and bend and provide a downward elastic force to the lower cover. Of course, the second latch portion 41 may be latched to the lower cavity wall 114, and the lower cover 40 directly presses the end of the elastic arm 13, so that the elastic arm 13 is deformed.

Referring to fig. 9, the elastic arm 13 is straight along its extending direction in a natural state.

Referring to fig. 6 and 7, the front edge of the side wall 114 forming the entrance of the accommodating cavity 111 extends away from the accommodating cavity 111 to form a reinforcing wall 15, one end of the reinforcing wall 15 extends to the edge of the upper cavity wall 112 and is connected to the first clamping portion 12, and the other end extends to the edge of the lower cavity wall 113 and is spaced from the elastic arm 13.

Referring to fig. 6, a protrusion 161 extending to the upper cavity wall 112 is protruded on an inner side of the first engaging portion 12, a protrusion 162 extending to the elastic arm 13 is protruded on an inner side of the second engaging portion 14, and ends of the protrusions 161 and 162 far away from the accommodating cavity 111 are wedge-shaped. After the host is installed, the first engaging portion 31 of the upper cover 30 is in interference fit with the protrusion 161 inside the first engaging portion 12, and the second engaging portion 41 of the lower cover 40 is in interference fit with the protrusion 162 inside the second engaging portion 14. The bumps 161 and 162 also effectively strengthen the structure of the antenna cover 10, preventing the first engaging portion 12 and the second engaging portion 14 from being deformed.

Referring to fig. 6 and 7, a positioning groove 17 is formed between the second engaging portion 14 and the reinforcing wall 15, and an inlet of the positioning groove 17 is gradually enlarged outward. The lower cover 40 is formed with a positioning protrusion 42 which can extend into the positioning groove 17 and be connected with the positioning groove 17 in a snap fit manner.

Referring to fig. 8, the upper chamber wall 112 extends inward from the front edge forming the entrance of the accommodating chamber 111 to form a positioning groove 18 penetrating the first engaging portion 12 and the upper chamber wall 112, and the opening of the positioning groove 18 is gradually enlarged. The upper cover 30 is formed with a positioning protrusion 32 that can extend into the positioning groove 18 and be engaged with the positioning groove 18.

Wherein the upper cavity wall 112 and the lower cavity wall 113 correspond to the shape of the antenna mounting part 21. In this embodiment, the antenna mounting portion 21 is positioned at one corner of the circuit board 20 and has a triangular shape. The upper cavity wall 112 and the lower cavity wall 113 of the housing 11 are respectively in a corresponding triangle shape, and the entrance of the accommodating cavity 111 is formed at one side of the triangle. The triangle is an isosceles triangle, and the entrance of the accommodating cavity 111 is located at the bottom side of the isosceles triangle. Of course, the shape of the antenna mounting portion 21 is not limited to a triangle, and the mounting position is not limited to a corner of the circuit board 20 as long as the antenna mounting portion 21 is located at the edge of the circuit board 20.

Referring to fig. 3 and 4, the first engaging portion 12 is provided with a longitudinal engaging wall along the front edge of the upper cavity wall 12, and the second engaging portion 14 is provided with a longitudinal engaging wall along the front edge of the lower cavity wall 14. The upper cover 30 and the lower cover 40 are provided with corresponding engaging grooves. Of course, the first engaging portion 12 and the second engaging portion 14 may be engaging grooves, and in this case, corresponding engaging protrusions are provided on the upper cover 30 and the lower cover 40.

Referring to fig. 3 and 4, a shielding region 24 is disposed between the main mounting portion and the antenna mounting portion 21, a shielding protrusion 33 is disposed on the shielding region 24 of the upper cover 30 opposite to the shielding region 24, a shielding protrusion 43 corresponding to the shielding region 24 is disposed on the lower cover 40 opposite to the shielding region 24, and a conductive adhesive (not shown) is filled or coated between the shielding protrusions 33 and 43 and the circuit board 20, so as to form a conductive adhesive layer for electromagnetic shielding. The shielding convex strip 33 of the upper cover 30 is arranged around one circle of the main mounting part 21, and the shielding convex strip 43 of the lower cover 40 is arranged around one circle of the main mounting part 21, so that the main mounting part 21 is isolated from the mounting cavities 23 of the upper cover 30 and the lower cover 40 from the positive and negative directions of the circuit board, and the external signals are prevented from interfering with the main circuit of the host machine.

The shielding convex strip 33 opposite to the shielding region 24 is provided with a notch 331 through which the circuit passes, and the circuit of the antenna passes through the notch 331.

Specifically, the first engaging portion 12, the second engaging portion 14, the first engaging portion 31, and the second engaging portion 41 are all engaging walls, and the first engaging portion 31 and the second engaging portion 41 respectively have a certain distance from the shielding protruding strips 33 and 43, and form a first engaging groove 34 and a second engaging groove 44 that can accommodate the first engaging portion 12 and the second engaging portion 14 in a matching manner, so that the first engaging portion 12 and the second engaging portion 14 are respectively engaged in the first engaging groove 34 and the second engaging groove 44.

Referring to fig. 10, a second embodiment of the present invention is different from the first embodiment, in this embodiment, one or more through slots 131 are formed on the elastic arm 13, and a plurality of through slots 131 are arranged along the corresponding edges at a certain interval. The through groove 131 is a longitudinal groove provided along the extending direction of the elastic arm 13.

In which a bent portion having a smaller width is formed between the through grooves 131 to facilitate the elastic arm 13 to be elastically bent under the pressing of the upper and lower covers 30 and 40.

Referring to fig. 11, a third embodiment of the present invention is different from the first embodiment, in this embodiment, a through slot 132 is formed on the elastic arm 13, and a plurality of through slots 132 are arranged along the corresponding edges at a certain interval. Wherein the through slots 132 are arranged transversely along the resilient arms 13.

In which a bent portion having a smaller width is formed between the through grooves 131 to facilitate the elastic arm 13 to be elastically bent under the pressing of the upper and lower covers 30 and 40.

Referring to fig. 12, a fourth embodiment of the present invention, which is different from the above-mentioned embodiment, in this embodiment, the elastic arm 13 includes a bending structure 133 that is bent away from the accommodating chamber 111, so that the elastic arm 13 is elastically bent in the up-and-down direction under the pressing of the upper cover 30 and the lower cover 40.

Referring to fig. 3 to 5, the assembly steps of the host structure 100 of the present invention are as follows:

the antenna cover 10 is covered on the antenna mounting portion 21 of the circuit board 20.

The circuit board 20 is mounted on the lower cover 40, and the second clamping portion 41 on the lower cover 40 is clamped and plugged with the second clamping portion 14 on the antenna cover 10. The conductive paste is applied to the corresponding position of the circuit board 20 or the lower cover 40 before the corresponding mounting, and when the assembly is performed, the shielding ribs 43 on the lower cover 40 are connected to the shielding region 24 of the circuit board 20 through the conductive paste to shield and isolate the main mounting portion 22 and the antenna mounting portion 21 from one surface of the circuit board 20.

The upper cover 30 is covered on the lower cover 40 to cover the main mounting portion 22 of the circuit board 20, and the first clamping portion 31 of the upper cover 30 is clamped with the first clamping portion 12 of the antenna cover 10. The conductive paste is applied to the corresponding position of the circuit board 20 or the upper cover 30 before the corresponding mounting, and when the assembly is performed, the shielding convex strip 33 on the upper cover 30 is connected to the shielding region 24 of the circuit board 20 through the conductive paste to shield and isolate the main mounting portion 22 and the antenna mounting portion 21 from the other surface of the circuit board 20.

The screw holes corresponding to the positions between the upper cover 30 and the lower cover 40 are screwed to fix the upper cover 30 and the lower cover 40 together, and the main mounting portion 22 of the circuit board 20 is fixed in the mounting cavity between the upper cover 30 and the lower cover 40. Along with the process of locking the screw, the lower cover 40 gradually approaches the upper cover 30, so that the position of the lower cover 40 corresponding to the second clamping portion 14 gradually presses the second clamping portion 14 upwards, the elastic arm 13 connected with the second clamping portion 14 bends upwards and deforms, and provides a downward elastic force to the lower cover 40, and after the upper cover 30 and the lower cover 40 are fixed, the antenna cover 10 is clamped and fixed between the upper cover 30 and the lower cover 40.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, therefore, the present invention is not limited by the appended claims.