An on-board antenna cover and a multimedia host

Abstract

The present invention discloses a board-mounted antenna cover for covering an antenna mounting portion of a circuit board provided in a main unit. The antenna cover includes a housing having a receiving cavity for receiving the antenna mounting portion. The housing includes a first cavity wall and a second cavity wall opposite to the circuit board surface, and side walls connecting the first cavity wall and the second cavity wall. A front edge of the first cavity wall forming an entrance of the receiving cavity extends away from the receiving cavity to form a first engaging portion. A front edge of the second cavity wall forming the entrance of the receiving cavity protrudes outwardly with a plurality of elastic arms having a certain spacing therebetween. The elastic arms can provide an elastic force in the up-and-down direction of the housing and deform and bend in the up-and-down direction of the housing. The ends of the elastic arms extend away from the receiving cavity to form a second engaging portion. The present invention also discloses a multimedia main unit. When the board-mounted antenna cover is assembled with the housing of the main unit, no screws are required and the connection is stable.

Description

Technical Field

[0001] The present invention relates to the design of an antenna cover and the installation structure of a multimedia host in a multimedia host with an on-board antenna. Background Art

[0002] In existing automotive hosts, on-board antennas are often used, and the antenna unit is formed on the 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. However, considering the host main circuit, the host main circuit often needs to be designed with a shielding housing having a shielding function. Therefore, an antenna cover for protecting the antenna needs to be designed separately. The antenna installation area of the circuit board extends out of the shielding housing from an opening on the side of the housing. The antenna cover covers the antenna installation area and is fixed together by plastic buckles and one screw. Not only does it require buckling alignment and screw locking installation, but also because the edge of the shielding housing needs to be filled with conductive glue for EMC shielding, a certain gap needs to be formed between the edge of the shielding housing where the opening is formed and the main board. When installing the screw, due to the accuracy and matching degree of the gap, the antenna cover warps, resulting in misalignment of the screw locking holes, and a fixture needs to be made for pre-pressing again, further increasing the difficulty of assembly and automated operation.

[0003] For this reason, in Chinese CN201911416717.3, a structure of a vehicle-mounted multimedia host is disclosed. Among them, an installation guide groove is formed on the edge of the antenna cover, and there is an antenna through-hole on the chassis for the antenna to pass through. A convex block is formed at the antenna through-hole. During assembly, the antenna cover is sleeved on the antenna and inserted downward from the opening end of the antenna through-hole, so that the installation guide groove of the antenna cover is correspondingly inserted on the guide block. Then, the bottom cover is covered on the chassis, so that the positioning insert block is positioned in the installation guide groove. Although this method does not require screw locking and fixing, due to the need for filling conductive glue, 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 distance left is too small, it is difficult to evenly arrange the conductive glue between the host circuit and the antenna circuit for effective shielding. If the distance left is too large, it is easy to cause the antenna cover to be poorly clamped and easily fall off, and the conductive glue is arranged in the edge area of the chassis, which is also easy to cause the conductive glue to age and fall off, resulting in poor shielding effect and poor durability.

[0004] Therefore, there is an urgent need for an antenna cover installation structure and a vehicle-mounted multimedia host that can solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide an on-board antenna cover and a multimedia host with high stability in the connection between the antenna cover and the housing of the host.

[0006] 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 unit, including a housing having a receiving cavity for receiving the antenna mounting portion. The housing includes a first cavity wall and a second cavity wall opposite to the circuit board surface, and a side wall connecting the first cavity wall and the second cavity wall. A front edge of the first cavity wall forming an entrance of the receiving cavity extends away from the receiving cavity to form a first engaging portion. A front edge of the second cavity wall forming the entrance of the receiving cavity protrudes outwardly with a plurality of elastic arms having a certain spacing therebetween. The elastic arms can provide an elastic force in the up-and-down direction of the housing and deform and bend in the up-and-down direction of the housing. Ends of the elastic arms extend away from the receiving cavity to form a second engaging portion.

[0007] Compared with the prior art, the board-mounted antenna cover of the present invention can be snap-fitted and connected to the housing of the main unit, and the first cavity wall or the second cavity wall of the board-mounted antenna cover has elastic arms that can elastically deform in the up-and-down direction, so that the mounting housing of the main unit can squeeze and snap-fit the antenna cover from the up-and-down direction of the antenna cover, with high connection stability, not easily falling off, and good durability. On the other hand, the elastic arms of the present invention extend forward from the edge of the second cavity wall. When the housing of the main unit squeezes and fixes the antenna cover, it can directly press on the elastic arms or the first cavity wall, and make the housing directly contact the outer surface of the first cavity wall, further improving the stability of the antenna cover and preventing the position of the antenna cover from shifting relative to the housing during long-term use.

[0008] Preferably, bumps extending to the first cavity wall and the elastic arms are respectively convexly provided on the inner sides of the first engaging portion and the second engaging portion, and ends of the bumps away from the receiving cavity are wedge-shaped.

[0009] Preferably, a front edge of the side wall extends away from the receiving cavity to form a reinforcing wall. One end of the reinforcing wall extends to an edge of the first cavity wall, and the other end is connected to the first engaging portion. This effectively strengthens the strength of the antenna cover and prevents the body of the antenna cover from deforming when being squeezed.

[0010] Specifically, a through positioning groove is provided between the second engaging portion and the reinforcing wall, and an entrance of the positioning groove gradually expands outward. This positioning groove is used to prevent the antenna cover from moving laterally during assembly.

[0011] Preferably, the first cavity wall extends inward from the front edge to form a positioning groove penetrating through the first engaging portion and the first cavity wall, and an opening of the positioning groove gradually expands.

[0012] Preferably, the antenna mounting part is located at a 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 in corresponding triangular shapes. This setting saves space and makes the assembled main unit have a regular shape without obvious protrusions, which is convenient for installation on the vehicle console.

[0013] Preferably, the elastic arm is straight along its extending direction in the natural state or includes a bending structure away from the accommodating cavity.

[0014] Preferably, one or more through grooves are formed in the elastic arm, and the plurality of through grooves are arranged at a certain interval along the corresponding edge.

[0015] Preferably, the first engaging part is an engaging wall or an engaging groove arranged along the front edge of the first cavity wall, and the second engaging part is an engaging wall or an engaging groove arranged along the front edge of the second cavity wall.

[0016] The present invention also discloses a multimedia main unit with an on-board antenna, including a first cover, a second cover, a circuit board and an antenna cover. The circuit board includes a main mounting part for mounting the main circuit of the main unit and an antenna mounting part for mounting the antenna. The first cover and the second cover can be cooperated to form an installation cavity for accommodating the main mounting part. An antenna outlet is provided on the installation cavity, and the antenna mounting part extends out of the installation cavity from the antenna outlet. It is characterized in that: the antenna cover is the above-mentioned on-board antenna cover, the antenna mounting part is accommodated in the accommodating cavity, the positions of the first cover and the second cover forming the antenna outlet are respectively convexly provided with a first engaging part and a second engaging part that are engaged with the first engaging part and the second engaging part, and the first cover and the second cover are cooperatively mounted from the front and back sides of the circuit board, and the first engaging part is engaged and connected with the first engaging part, and the second engaging part is engaged and connected with the second engaging part. The elastic arm provides a resisting elastic force to the second engaging part, so that the first cover and the second cover clamp and fix the antenna cover.

[0017] Compared with the prior art, the on-board antenna cover of the present invention is engaged and connected with the first cover and the second cover. Only by assembling and fixing the first cover and the second cover, the on-board antenna cover can be fixed on the main unit without screws. Moreover, the first cavity wall or the second cavity wall of the on-board antenna cover has an elastic arm that can be elastically deformed in the up and down directions. When the circuit board is installed in the cover body, the first cover and the second cover can clamp and elastically clamp the antenna cover from the upper and lower sides. The connection stability is high, it is not easy to fall off, and the durability is good.

[0018] Preferably, a reinforcing wall is further convexly provided at the front edge of the second cavity wall, with a certain distance from the second engaging portion, and a positioning groove penetrating through the first cavity wall is formed between the reinforcing wall and the second engaging portion. A positioning protrusion that can extend into the positioning groove and engage with the positioning groove is formed on the second cover. This facilitates the lateral positioning (perpendicular to the positioning direction of the first engaging portion and parallel to the extending direction of the circuit board) of the antenna cover after assembly.

[0019] Preferably, a positioning groove penetrating through the first engaging portion is provided along the direction perpendicular to the edge of the first engaging portion corresponding to the first cavity wall on the first engaging portion. A positioning protrusion that can extend into the positioning groove and engage with the positioning groove is formed on the first cover. This facilitates the lateral positioning (perpendicular to the positioning direction of the first engaging portion and parallel to the extending direction of the circuit board) of the antenna cover after assembly.

[0020] Preferably, there is a shielding area between the main installation part and the antenna installation part. Shielding ribs are convexly provided at the positions opposite to the shielding area on the first cover, and shielding ribs are convexly provided at the positions opposite to the shielding area on the second cover. There is an electrically conductive adhesive layer between the shielding ribs and the circuit board.

[0021] Specifically, the first engaging portion, the second engaging portion, the first clamping portion, and the second clamping portion are all engaging walls. The first clamping portion and the second clamping portion are respectively at a certain distance from the shielding rib, and a first engaging groove and a second engaging groove that can cooperate to accommodate the first engaging portion and the second engaging portion are formed, so that the first engaging portion and the second engaging portion are respectively clamped in the first engaging groove and the second engaging groove. This solution enables good shielding effect between the main circuit part and the board-mounted antenna part of the present application, prevents interference between the main circuit part and the board-mounted antenna part, and also enables only one engaging portion to be provided on the antenna cover, with a simple structure and easy assembly. Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of a multimedia host with a board-mounted antenna of the present invention at an angle.

[0023] Figure 2 is a schematic structural diagram of a multimedia host with a board-mounted antenna of the present invention at another angle.

[0024] Figure 3 is an exploded schematic diagram of a multimedia host with a board-mounted antenna of the present invention at an angle.

[0025] Figure 4 is an exploded schematic diagram of a multimedia host with a board-mounted antenna of the present invention at another angle.

[0026] Figure 5 is a cross-sectional view of a multimedia host with a board-mounted antenna of the present invention.

[0027] Figure 6 It is a schematic structural view of an antenna cover of the present invention at an angle.

[0028] Figure 7 It is a schematic structural view of the antenna cover of the present invention at another angle.

[0029] Figure 8 It is a schematic structural view of the antenna cover of the present invention at yet another angle.

[0030] Figure 9 It is a sectional view of the antenna cover of the present invention.

[0031] Figure 10 It is a schematic structural view of the antenna cover in the second embodiment of the present invention.

[0032] Figure 11 It is a schematic structural view of the antenna cover in the third embodiment of the present invention.

[0033] Figure 12 It is a schematic structural view of the antenna cover in the fourth embodiment of the present invention. Specific embodiments

[0034] To describe in detail the technical content, structural features, achieved objectives and effects of the present invention, the following will be described in detail in conjunction with the embodiments and with reference to the drawings.

[0035] Refer to Figures 1 to 4 , the present invention also discloses a multimedia host 100 with an on-board antenna, including an upper cover 30, a lower cover 40, a circuit board 20 and an antenna cover 10. The circuit board 20 includes a main installation part 22 for installing the main circuit of the host and an antenna installation part 21 for installing the antenna. The upper cover 30 and the lower cover 40 can cooperate to form an installation cavity 23 for accommodating and installing the main installation part 22. An antenna outlet is provided on the installation cavity 23. The antenna installation part 21 extends out of the antenna outlet and is located outside the installation cavity 23. The antenna cover 10 is installed on the upper cover 30 and the lower cover 40 and covers the antenna installation part 21. The circuit board 20 is the circuit board of the host. Among them, the upper cover 40 and the lower cover 40 are in a relative positional relationship, which does not mean that the upper cover 30 must be located above the lower cover 40.

[0036] In this embodiment, the on-board antenna is a vehicle multimedia host.

[0037] Refer to Figures 5 to 9, the antenna cover 10 includes a housing 11 having a receiving cavity 111 for receiving the antenna mounting portion 21. The housing 11 includes an upper cavity wall 112 and a lower cavity wall 113 that are opposite to each other in the up and down directions, side walls 114 connecting the upper cavity wall 112 and the lower cavity wall 113, and an entrance communicating with the receiving cavity 111. The antenna mounting portion 21 extends into the receiving cavity 111 from the entrance of the receiving cavity 111, and the plate surface of the antenna mounting portion 21 is disposed opposite to the upper cavity wall 112 and the lower cavity wall 113.

[0038] Continue to refer to Figures 5 to 9 , the upper cavity wall 112 extends away from the receiving cavity 111 to form a first engaging portion 12. The lower cavity wall 113 has a plurality of elastic arms 13 protruding outwardly at a certain distance from the front edge of the entrance of the receiving cavity 111. The elastic arms 13 can provide an elastic force in the up and down direction of the housing 11 and deform and bend in the up and down direction of the housing 11. The ends of the elastic arms 13 extend away from the receiving cavity 111 to form a second engaging portion 14. The plate surface of the antenna mounting portion 21 is disposed opposite to the upper cavity wall 112 and the lower cavity wall 113 respectively. Among them, the upper cavity wall 112 and the lower cavity wall 113 are in a relative position relationship, and it is not limited to the up and down in the actual space.

[0039] Among them, in this embodiment, the elastic arms 13 are formed by a plurality of through spacing grooves opened inwardly from the front edge of the lower cavity wall 113.

[0040] Among them, the first engaging portion 12 is formed on the front edge of the upper cavity wall 112 where the entrance of the receiving cavity 111 is formed. Of course, the position of the first engaging portion 12 is not limited to the edge, and it can also be provided at a certain distance from the front edge.

[0041] In this embodiment, the elastic arms 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 arms 13 and the second engaging portion 14 can also be located on the upper cavity wall 112, and the first engaging portion 12 is correspondingly located on the lower cavity wall 113.

[0042] In this embodiment, the elastic arms 13 are only located on one of the lower cavity wall 113 and the upper cavity wall 114. Of course, there can also be two groups of elastic arms 13 and they are respectively disposed 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 convexly provided on the two groups of elastic arms 13 and are disposed back to back.

[0043] Refer to Figures 1 to 4, at the position where the upper cover 30 forms the antenna outlet, a first clamping portion 31 protrudes, and at the position where the lower cover 40 forms the antenna outlet, a second clamping portion 41 protrudes. The first clamping portion 31 and the second clamping portion 41 are arranged opposite to each other1. The first clamping portion 31 is engaged with the first engaging portion 12, and the second clamping portion 41 is engaged with the second engaging portion 14. The antenna cover 10 is installed on the antenna installation portion 21, and the antenna installation portion 21 is located in the accommodation cavity 111. The upper cover 30 and the lower cover 40 are respectively installed from the upper and lower sides of the circuit board 20 so that the main installation portion 22 is located in the installation cavity 23. The first clamping portion 31 is engaged and connected with the first engaging portion 12, and the second clamping portion 41 is engaged and connected with the second engaging portion 14. The elastic arm 13 provides a 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 in the up and down directions of the antenna cover 10.

[0044] Wherein, the elastic arm 13 is smoothly extended outward from the second cavity wall 114. Specifically, at one end where the elastic arm 13 is connected to the edge of the second cavity wall 114, a part of the length is at the same height and parallel to the outer surface of the first cavity wall 114.

[0045] In this embodiment, the upper cover 30 is engaged with the first engaging portion 12, and the end of the first engaging portion 12 abuts against the corresponding position of the upper cover 30. Of course, it is also possible to make the first clamping portion 31 abut against the upper cavity wall 112.

[0046] In this embodiment, the lower cover 40 is engaged with the second engaging portion 14, and the end of the second engaging portion 14 abuts against the corresponding position of the lower cover 40. The lower cover 40 presses the second engaging portion 14 upward, thereby driving the elastic arm 13 to deform and bend and providing a downward elastic force to the lower cover. Of course, it is also possible to make the second clamping portion 41 engage with the lower cavity wall 114. At this time, the lower cover 40 directly presses the end of the elastic arm 13, causing the elastic arm 13 to deform.

[0047] Reference Figure 9 , in the natural state, the elastic arm 13 is straight along its extending direction.

[0048] Reference Figure 6 And Figure 7 , the front edge of the side wall 114 forming the entrance of the accommodation cavity 111 extends away from the accommodation 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 engaging portion 12, and the other end extends to the edge of the lower cavity wall 113 and has a certain distance from the elastic arm 13.

[0049] Reference Figure 6, a convex block 161 extending to the upper cavity wall 112 is convexly provided inside the first engaging portion 12, and a convex block 162 extending to the elastic arm 13 is convexly provided inside the second engaging portion 14. The ends of the convex blocks 161 and 162 away from the accommodation cavity 111 are wedge-shaped. After the host is installed, the first engaging portion 31 of the upper cover 30 is in abutting cooperation with the convex block 161 inside the first engaging portion 12, and the second engaging portion 41 of the lower cover 40 is in abutting cooperation with the convex block 162 inside the second engaging portion 14. The convex blocks 161 and 162 also effectively strengthen the structure of the antenna cover 10 and prevent the first engaging portion 12 and the second engaging portion 14 from deforming.

[0050] Reference Figure 6 and Figure 7 , a through positioning groove 17 is provided between the second engaging portion 14 and the reinforcing wall 15, and the entrance of the positioning groove 17 gradually expands outward. A positioning protrusion 42 that can extend into the positioning groove 17 and engage with the positioning groove 17 is formed on the lower cover 40.

[0051] Reference Figure 8 , a positioning groove 18 penetrating through the first engaging portion 12 and the upper cavity wall 112 is formed by the upper cavity wall 112 extending inward from the front edge forming the entrance of the accommodation cavity 111, and the opening of the positioning groove 18 gradually expands. A positioning protrusion 32 that can extend into the positioning groove 18 and engage with the positioning groove 18 is formed on the upper cover 30.

[0052] Among them, the shapes of the upper cavity wall 112 and the lower cavity wall 113 correspond to the shape of the antenna mounting portion 21. In this embodiment, the antenna mounting portion 21 is located at a corner of the circuit board 20 and is triangular. The upper cavity wall 112 and the lower cavity wall 113 of the housing 11 are respectively in corresponding triangular shapes, and the entrance of the accommodation cavity 111 is formed at one side of the triangle. This triangle is an isosceles triangle, and the entrance of the accommodation cavity 111 is located at the base 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 on the edge of the circuit board 20.

[0053] Reference Figure 3 and Figure 4 , the first engaging portion 12 is arranged as a longitudinal engaging wall along the front edge of the upper cavity wall 12, and the second engaging portion 14 is arranged as a longitudinal engaging wall along the front edge forming the lower cavity wall 14. Corresponding engaging grooves are provided on the upper cover 30 and the lower cover 40. Of course, the first engaging portion 12 and the second engaging portion 14 can also be engaging grooves, and in this case, corresponding engaging protrusions are provided on the upper cover 30 and the lower cover 40.

[0054] Reference Figure 3 and Figure 4, there is a shielding area 24 between the main installation part and the antenna installation part 21. On the upper cover 30 opposite to the shielding area 24, shielding ribs 33 are provided in the shielding area 24. On the lower cover 40 opposite to the shielding area 24, shielding ribs 43 corresponding to the shielding area 24 are provided. Conductive adhesive (not shown in the figure) is filled or coated between the shielding ribs 33, 43 and the circuit board 20 to form a conductive adhesive layer for electromagnetic shielding. Among them, the shielding ribs 33 of the upper cover 30 are arranged around the main installation part 21 in a circle, and the shielding ribs 43 of the lower cover 40 are arranged around the main installation part 21 in a circle, so as to isolate the main installation part 21 from the installation cavity 23 of the upper cover 30 and the lower cover 40 from both the front and back directions of the circuit board, preventing external signals from interfering with the main circuit of the host.

[0055] Among them, a notch 331 for the circuit to pass through is provided on the shielding rib 33 opposite to the shielding area 24, and the line of the antenna passes through the notch 331.

[0056] Specifically, the first engaging part 12, the second engaging part 14, the first clamping part 31, and the second clamping part 41 are all engaging walls. The first clamping part 31 and the second clamping part 41 are respectively at a certain distance from the shielding ribs 33, 43, and form a first engaging groove 34 and a second engaging groove 44 that can cooperate to accommodate the first engaging part 12 and the second engaging part 14, so that the first engaging part 12 and the second engaging part 14 are respectively clamped in the first engaging groove 34 and the second engaging groove 44.

[0057] Reference Figure 10 , which is the second embodiment of the present invention. Different from the first embodiment, in this embodiment, one or more through grooves 131 are provided on the elastic arm 13, and the plurality of through grooves 131 are arranged at a certain distance along the corresponding edge. Among them, the through groove 131 is a longitudinal groove arranged along the extending direction of the elastic arm 13.

[0058] Among them, a bent part with a smaller width is formed between the through grooves 131, which is convenient for the elastic arm 13 to elastically bend under the extrusion of the upper cover 30 and the lower cover 40.

[0059] Reference Figure 11 , which is the third embodiment of the present invention. Different from the first embodiment, in this embodiment, a through groove 132 is provided on the elastic arm 13, and the plurality of through grooves 132 are arranged at a certain distance along the corresponding edge. Among them, the through groove 132 is arranged transversely along the elastic arm 13.

[0060] Among them, a bent part with a smaller width is formed between the through grooves 131, which is convenient for the elastic arm 13 to elastically bend under the extrusion of the upper cover 30 and the lower cover 40.

[0061] Reference Figure 12, which is the fourth embodiment of the present invention. Different from the above embodiments, in this embodiment, the elastic arm 13 includes a bending structure 133 that bends away from the accommodating cavity 111, facilitating the elastic bending of the elastic arm 13 in the up and down direction under the extrusion of the upper cover 30 and the lower cover 40.

[0062] Reference Figures 3 to 5 , the specific steps for assembling the multimedia host 100 of the present invention are as follows:

[0063] Cover the antenna cover 10 on the antenna installation part 21 of the circuit board 20.

[0064] Install the circuit board 20 on the lower cover 40, and make the second engaging part 41 on the lower cover 40 engage and plug with the second engaging part 14 on the antenna cover 10. The conductive adhesive has been coated on the corresponding positions of the circuit board 20 or the lower cover 40 before corresponding installation. During assembly, the shielding rib 43 on the lower cover 40 is connected to the shielding area 24 of the circuit board 20 through the conductive adhesive to shield and isolate the main installation part 22 and the antenna installation part 21 from one side surface of the circuit board 20.

[0065] Cover the upper cover 30 on the lower cover 40 to cover the main installation part 22 of the circuit board 20, and make the first engaging part 31 of the upper cover 30 engage and connect with the first engaging part 12 of the antenna cover 10. The conductive adhesive has been coated on the corresponding positions of the circuit board 20 or the upper cover 30 before corresponding installation. During assembly, the shielding rib 33 on the upper cover 30 is connected to the shielding area 24 of the circuit board 20 through the conductive adhesive to shield and isolate the main installation part 22 and the antenna installation part 21 from the other side surface of the circuit board 20.

[0066] Lock the screws for the screw holes corresponding in position between the upper cover 30 and the lower cover 40 to fix the upper cover 30 and the lower cover 40 together, and the main installation part 22 of the circuit board 20 is fixed in the installation cavity between the upper cover 30 and the lower cover 40. As the screws are locked, the lower cover 40 gradually approaches the upper cover 30, so that the position of the lower cover 40 corresponding to the second engaging part 14 gradually presses against the second engaging part 14 upward, and the elastic arm 13 connected to the second engaging part 14 bends upward and deforms accordingly, and provides a downward elastic force to the lower cover 40. 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.

[0067] The above-disclosed are only the preferred embodiments of the present invention. Of course, the scope of the rights of the present invention cannot be limited thereby. Therefore, equivalent changes made according to the scope of the patent application of the present invention still fall within the scope covered by the present invention.

Claims

1. A board-mounted antenna cover for covering an antenna mounting portion of a circuit board disposed in a host, comprising a housing having a receiving cavity for receiving the antenna mounting portion, the housing including a first cavity wall and a second cavity wall that are opposite to each other up and down, a side wall connecting the first cavity wall and the second cavity wall, and an entrance communicating with the receiving cavity, characterized in that: The first cavity wall extends in a direction away from the accommodating cavity to form a first locking portion, and the second cavity wall forms a front edge of the entrance of the accommodating cavity and protrudes outward with a plurality of elastic arms with a certain spacing, the elastic arms can provide elastic force along the up and down directions of the shell and deform and bend in the up and down directions of the shell, and the ends of the elastic arms extend in a direction away from the accommodating cavity to form a second locking portion, and the second locking portion is pressed from the outer surface of the shell in the up and down directions, so that the elastic wall can bend and deform in the direction of the accommodating cavity.

2. The on-board antenna cover according to claim 1, characterized in that: The inner sides of the first engaging portion and the second engaging portion are respectively provided with protruding blocks extending to the first cavity wall and the elastic arm, and the ends of the protruding blocks away from the accommodating cavity are wedge-shaped.

3. The on-board antenna cover according to claim 1, wherein: 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 is connected to the first clamping portion.

4. The on-board antenna cover according to claim 3, characterized in that: A positioning groove is provided between the second engaging portion and the reinforcing wall, and an entrance of the positioning groove gradually expands outwards.

5. The on-board antenna cover according to claim 1, characterized in that: The first cavity wall extends inward from the front edge to form a positioning groove penetrating the first engaging portion and the first cavity wall, and the opening of the positioning groove gradually expands.

6. The on-board antenna cover according to claim 1, characterized in that: The antenna mounting portion is located at a corner of the circuit board and is in a triangular shape. The first cavity wall and the second cavity wall are respectively opposite to the antenna mounting portion and are in corresponding triangular shapes.

7. The on-board antenna cover according to claim 1, characterized in that: The elastic arm is straight along its extension direction in a natural state or includes a curved structure away from the accommodating cavity.

8. The on-board antenna cover according to claim 1, characterized in that: The elastic arm is provided with one or more through grooves, and the plurality of through grooves are arranged at a certain interval along the edge corresponding to the edge.

9. The on-board antenna cover according to claim 1, characterized in that: The first engaging portion is an engaging wall or an engaging groove arranged along the front edge of the first cavity wall, and the second engaging portion is an engaging wall or an engaging groove arranged along the front edge of the second cavity wall.

10. A multimedia host with an on-board antenna, comprising a first cover, a second cover, a circuit board and an antenna cover. The circuit board includes a main mounting portion for mounting the main circuit of the host and an antenna mounting portion for mounting the antenna. The first cover and the second cover can cooperate to form a mounting cavity for accommodating the main mounting portion. An antenna outlet is provided on the mounting cavity, and the antenna mounting portion extends out of the mounting cavity from the antenna outlet. It is characterized in that: The antenna cover is a board-mounted antenna cover as described in any one of claims 1 to 9, the antenna mounting portion is accommodated in the accommodating cavity, the positions where the first cover and the second cover form the antenna outlet are respectively protruding with a first clamping portion and a second clamping portion that are engaged with the first clamping portion and the second clamping portion, and the first cover and the second cover are cooperatively installed from the front and back sides of the circuit board, and the first clamping portion is engaged with the first clamping portion, and the second clamping portion is engaged with the second clamping portion, and the elastic arm provides a resisting elastic force to the second clamping portion, so that the first cover and the second cover clamp and fix the antenna cover.

11. The multimedia host according to claim 10, wherein: A reinforcing wall is also protruded from the front edge of the second cavity wall at a certain distance from the second clamping portion, and a positioning groove penetrating the first cavity wall is formed between the reinforcing wall and the second clamping portion, and a positioning protrusion is formed on the second cover that can extend into the positioning groove and be clamped with the positioning groove.

12. The multimedia host according to claim 10, wherein: A positioning groove penetrating the first engaging portion is formed on the upper edge of the first engaging portion in a direction perpendicular to the edge of the first cavity wall, and a positioning protrusion that can extend into the positioning groove and be engaged with the positioning groove is formed on the first cover.

13. The multimedia host according to claim 10, characterized in that: There is a shielding area between the main installation part and the antenna installation part. The first cover is convexly provided with shielding ribs at positions opposite to the shielding area, and the second cover is convexly provided with shielding ribs at positions opposite to the shielding area. There is an electrically conductive adhesive layer between the shielding ribs and the circuit board.

14. The multimedia host according to claim 13, wherein: The first engaging part, the second engaging part, the first clamping part, and the second clamping part are all engaging walls. The first clamping part and the second clamping part are respectively at a certain distance from the shielding ribs, and form a first engaging groove and a second engaging groove that can cooperatively accommodate the first engaging part and the second engaging part, so that the first engaging part and the second engaging part are respectively clamped in the first engaging groove and the second engaging groove.

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