CN-224218727-U - Navigation host circuit board shielding cover with positioning structure

Abstract

The utility model provides a navigation host circuit board shielding cover with a positioning structure, which comprises a shielding cover body, wherein more than two first mounting parts and openings matched with electronic components are arranged on the shielding cover body, corners of the shielding cover body sink downwards from the upper end surface of the shielding cover body to form first mounting parts, folding parts are arranged between the first mounting parts at the two corners and are vertically connected with the shielding cover body to form a whole, gaps are formed between the folding parts and the first mounting parts, accommodating cavities are formed between the first mounting parts of the shielding cover body and the folding parts positioned at the outer edges of the shielding cover body respectively, and limiting parts and positioning parts which are vertically arranged with the shielding cover body are arranged on the folding parts.

Inventors

• JIANG LIANG
• YE LINGWEI

Assignees

• 广州益川机械有限公司

Dates

Publication Date

20260508

Application Date

20250331

Claims (10)

1. 1. The navigation host circuit board shielding cover with the positioning structure is characterized by comprising a shielding cover body, wherein more than two first installation parts and openings matched with electronic elements are arranged on the shielding cover body, the corners of the shielding cover body sink downwards from the upper end face of the shielding cover body to form first installation parts, folding parts are arranged between the first installation parts at the two corners, accommodating cavities are formed between the first installation parts of the shielding cover body and the folding parts positioned at the outer side edges of the shielding cover body, a pelvic cavity is formed by the sinking downwards from the upper end face of the shielding cover body on the middle part of the shielding cover body, second installation parts formed by the sinking downwards from the upper end face of the shielding cover body are respectively arranged on the two side edges of the shielding cover body, and the installation parts are positioned at diagonal positions of the pelvic cavity.
2. 2. The navigation host circuit board shield case with the positioning structure of claim 1, wherein the first installation part comprises a first connection cambered surface and a first sinking plane, the upper end of the first connection cambered surface is connected with the shield cover body into a whole, the lower end of the first connection cambered surface is connected with the first sinking plane into a whole, and the first sinking plane parallel to the shield cover body is provided with a first installation hole.
3. 3. The navigation host circuit board shield case with the positioning structure of claim 1, wherein the folding part is vertically connected with the shield cover body to form a whole, a gap is formed between the folding part and the first mounting part, and a limiting part and a positioning part which is vertically arranged with the shield cover body are arranged on the folding part.
4. 4. The navigation host circuit board shield case with the positioning structure of claim 3, wherein the folding portion comprises two first folding portions oppositely arranged along the width direction of the shield cover body and two second folding portions oppositely arranged along the length direction of the shield cover body, one end of the first folding portion and one end of the second folding portion are connected with the shield cover body to form a whole, and the other end of the first folding portion and the other end of the second folding portion extend from the upper end face of the shield cover body to the lower end face.
5. 5. The navigation host circuit board shield case with the positioning structure of claim 4, wherein a gap is formed between one side of the first folding portion and one side of the second folding portion and two sides of the first connecting cambered surface.
6. 6. The navigation host circuit board shield case with positioning structure of claim 3, wherein the limiting part comprises a first limiting part and a second limiting part, the positioning part comprises a first positioning part and a second positioning part, the first folding part is provided with a first limiting part and a first positioning part, one end of the first limiting part is connected with the first folding part to form a whole, the other end of the first limiting part is outwards turned and abutted to the outer side surface of the first folding part to form a first limiting notch, one end of the first positioning part is connected with the first folding part to form a whole, and the other end of the first positioning part is perpendicular to the shielding cover body to outwards extend and arrange.
7. 7. The navigation host circuit board shield case with the positioning structure of claim 4, wherein the second folded portion is provided with a second limiting portion or a second positioning portion, one end of the second limiting portion is connected with the second folded portion to form a whole, the other end of the second limiting portion is outwards folded and abutted to the outer side face of the second folded portion to form a second limiting notch, one end of the second positioning portion is connected with the second folded portion to form a whole, and the other end of the second positioning portion is perpendicular to the shielding cover body and outwards extends to be arranged.
8. 8. The navigation host circuit board shield case with the positioning structure of claim 1, wherein the shield cover body is sunk from the upper end surface of the shield cover body to the lower end surface to form a pelvic cavity.
9. 9. The navigation host circuit board shield case with the positioning structure of claim 1, wherein the shield cover body protrudes from the lower end surface to the upper end surface of the shield cover body to form a boss, and the opening comprises a circular opening and a square opening, and the circular opening and the square opening are arranged on one side of a pelvic cavity or one side of the boss.
10. 10. The navigation host circuit board shield cover with the positioning structure of claim 1, wherein one side, close to the second folding portion, of the shield cover body sinks downwards from the upper end face of the shield cover body to form a second installation portion, the second installation portion comprises a second connection cambered surface and a second sinking plane, the upper end of the second connection cambered surface is connected with the shield cover body to form a whole, the lower end of the second connection cambered surface is connected with the second sinking plane to form a whole, and the second sinking plane parallel to the shield cover body is provided with a second installation hole.

Description

Navigation host circuit board shielding cover with positioning structure Technical Field The utility model relates to the technical field of automobile parts, in particular to a navigation host circuit board shielding cover with a positioning structure. Background The vehicle-mounted navigator is a vehicle-mounted auxiliary device which can help a user to accurately position the current position and guide the user to travel to a destination through a map display mode and a voice prompt mode according to the calculated travel of the established destination, and mainly comprises a chip, an antenna, a processor, a memory, a screen, a circuit board and other parts. Therefore, how to shield electromagnetic waves generated by electronic components has become an urgent problem to be solved in the industry. If chinese patent No. 202220896813.3, publication day 2022.11.15 discloses a shield cover for vehicle-mounted control system component, which comprises a substrate and a shield cover body mounted on the substrate, wherein the upper surface of the substrate is provided with a plurality of positioning blocks, the surrounding inner side wall of the shield cover body is provided with positioning sliding grooves matched and locked with the positioning blocks, a buffer structure is further arranged between the substrate and the shield cover body, and the buffer structure comprises a square buffer air bag arranged at the edge of the upper surface of the substrate and a plurality of uniformly distributed buffer bulges arranged at the butt joint position of the shield cover body and the substrate. The electronic components with different sizes and protruding circuit boards are arranged on the circuit board, electromagnetic interference generated by the electronic components is shielded, meanwhile, the radiating effect of the electronic components is considered, and the space occupied by the shielding cover is also considered, in the above-mentioned document, the whole shielding cover body is covered on the substrate to form a square three-dimensional structure, thus the occupied space is large, the structure is complex, the heat dissipation is realized only through four radiating openings of the shielding cover body cover, for a plurality of electronic components on the circuit board, as the whole circuit board structure is arranged in the square three-dimensional space, a large amount of heat is also formed in the three-dimensional space for part without shielding, the radiating effect is poor, the shielding space is also formed by the shielding cover for realizing the installation, but the installation is realized through the fastener, for the long circuit board, the middle position of the long side is easy to install only through the fastener at four corner positions, the middle position is easy to appear only by limiting parts and the positioning parts, the deformation is caused by the influence of the fastening force at two sides on the thickness of the board body, and the installation reliability is not high. Disclosure of utility model The utility model aims to provide the navigation host circuit board shielding cover with the positioning structure, which can be accurately matched with an electronic element to be positioned and mounted on a circuit board, has a compact structure, occupies small space and has high mounting reliability. The utility model provides a navigation host circuit board shield cover with a positioning structure, which comprises a shield cover body, wherein more than two first installation parts and openings matched with electronic elements are arranged on the shield cover body, the corners of the shield cover body sink downwards from the upper end face of the shield cover body to form first installation parts, folding parts are arranged between the first installation parts at the two corners, a containing cavity is formed between the first installation parts of the shield cover body and the folding parts positioned at the outer side edges of the shield cover body, the middle part of the shield cover body sinks downwards from the upper end face of the shield cover body to form a pelvic cavity, the two side edges of the shield cover body are respectively provided with second installation parts sinking downwards from the upper end face of the shield cover body, and the installation parts are positioned at diagonal positions of the pelvic cavity. The first mounting part and the second mounting part are arranged at the diagonal position of the pelvic cavity, so that for the long circuit board, parts on the circuit board can be die-cast firstly, then the second mounting part close to the pelvic cavity is pre-fixed, thereby realizing reliable mounting of the middle part of the circuit board, then the first mounting part is penetrated through by a fixing piece to fix the shielding cover on the circuit board, thereby realizing electromagnetic interference generated by electronic elements on the shiel