CN210298408U

CN210298408U - Waterproof shielding box

Info

Publication number: CN210298408U
Application number: CN201920942410.6U
Authority: CN
Inventors: 李蔚超; 钱波; 阮美琪; 侯建平
Original assignee: XIANGYANG HANGLI ELECTROMECHANICAL TECHNOLOGY DEVELOPMENT CO LTD
Current assignee: XIANGYANG HANGLI ELECTROMECHANICAL TECHNOLOGY DEVELOPMENT CO LTD
Priority date: 2019-06-21
Filing date: 2019-06-21
Publication date: 2020-04-10
Anticipated expiration: 2029-06-21

Abstract

A waterproof shielding box comprises a cover plate and a cavity body, wherein the upper end of the cavity body is provided with an opening; a plurality of first threaded holes used for being matched with countersunk screws are formed in the four sides of the opening of the cavity, annular grooves are formed in the upper part of the opening of the cavity and the inner sides of the first threaded holes, conductive rubber rings are arranged in the grooves, a plurality of horizontally arranged square disc sockets are fixedly arranged on the outer side wall of the cavity through cylindrical head screws, second threaded holes used for being matched with the cylindrical head screws are correspondingly formed in the side wall of the cavity, and conductive rubber pads are arranged between the square disc sockets and the outer side wall of the cavity; a plurality of U-shaped grooves are symmetrically arranged on two outer side walls of the cavity adjacent to the outer side wall of the socket provided with the square disc, and mounting through holes are formed in the bottoms of the U-shaped grooves; the lower surface of the cover plate is provided with a first contact part matched with the groove, and a second contact part is arranged between the outer side wall of the cavity and the conductive rubber pad. The utility model discloses can improve that current equipment is sealed complicated with shielding structure, the shielding reliability is low, and the processing cost is high, the big scheduling problem of volume, weight.

Description

Waterproof shielding box

Technical Field

The utility model relates to a waterproof shielding box, especially a waterproof shielding box that on-vehicle high voltage generator electronic voltage regulator used.

Background

When the vehicle-mounted electronic equipment exposed to the atmosphere is used, the electronic equipment is generally protected in order to prevent water from splashing into the circuit board in severe weather (such as rainy days) or during car washing, which causes circuit short circuit and device damage. At present, a protection mode is to adopt a plastic shell, and a sealing ring is added on the periphery of the shell, so that although the waterproof function can be achieved, the electromagnetic radiation of electronic equipment cannot be shielded, the external electromagnetic environment interference cannot be resisted, and the equipment is poor in electromagnetic compatibility. The other method is to adopt a metal shell, the shell adopts a special-shaped groove design or a double-groove combined shielding cover, and the periphery adopts a rubber ring and a conductive metal net for sealing and shielding, so that the sealing and shielding structure is complicated, the processing is difficult, the shell wall is thickened, and the equipment volume and the weight are large; when the shielding material is in a severe environment such as damp heat, salt fog, mold and the like, the metal shell can be corroded to produce non-conductive oxides, so that the conductive performance is reduced, and the shielding effect is poor.

Disclosure of Invention

The utility model aims to overcome the above-mentioned not enough of prior art and provide a waterproof shielding box that on-vehicle generator electronic voltage regulator used suitable for abominable natural environment for it is complicated with the shielding structure to improve the sealed and shielding of current equipment, and the shielding reliability is low, and the processing cost is high, the big scheduling problem of volume, weight.

The utility model adopts the technical proposal that: the device comprises a square cover plate and a cavity body, wherein the upper end of the cavity body is provided with an opening, and the cover plate and the cavity body are fixedly covered tightly through countersunk screws; a plurality of first threaded holes used for being matched with countersunk screws are formed in the four sides of the opening of the cavity, annular grooves are formed in the upper part of the opening of the cavity and on the inner sides of the first threaded holes, conductive rubber rings are arranged in the grooves, a plurality of horizontally arranged square disc sockets are fixedly arranged on the outer side wall of the cavity through cylindrical head screws, second threaded holes used for being matched with the cylindrical head screws are correspondingly formed in the side wall of the cavity, and conductive rubber pads are arranged between the square disc sockets and the outer side wall of the cavity; a plurality of U-shaped grooves are symmetrically formed in two adjacent outer side walls of the cavity and the outer side wall of the socket provided with the square disc, and mounting through holes are formed in the bottoms of the U-shaped grooves; the lower surface of the cover plate is provided with a first contact part matched with the groove, and a second contact part is arranged between the outer side wall of the cavity and the conductive rubber pad.

The cover plate and the cavity are made of aluminum alloy, and a layer of compact insulating oxide film is generated through surface anodic oxidation treatment.

The square disc socket is a metal shell waterproof socket, and the surface of the square disc socket is conductive.

And the oxide layer on the surface of the aluminum alloy is removed from the inner wall of the groove, the first contact part and the second contact part.

The first threaded hole and the second threaded hole are both blind holes.

And three-proofing paint is sprayed on the outer surfaces of the cover plate and the cavity.

The second threaded hole is located on the outer side of the conductive rubber pad.

The beneficial effects of the utility model reside in that: the structure is simple, and the production cost is low; the cavity and the cover plate are both subjected to anodic oxidation treatment, and the outer surface is integrally sprayed with three-proofing paint (without a square plate socket), so that the shielding box achieves the purposes of damp and heat resistance, mould resistance and salt mist resistance; conductive rubber is arranged among the cover plate, the socket and the cavity, so that the waterproof effect is achieved; oxide layers on the surface of the material of the contact surface of the conductive rubber are removed, so that the conductive performance is stable, the reliable connection and the conductivity of all points of the whole shielding box are guaranteed, and the electromagnetic shielding effect is achieved; the threaded holes in the cavity are blind holes, so that the sealing property can be guaranteed; the waterproof and shielding effects can be achieved only by forming a groove in the cavity, and the cavity and the cover plate are made of aluminum alloy materials, so that the material is light, the size is compact, and the weight is low.

Drawings

Fig. 1 is a front view of the present invention;

FIG. 2 is a schematic half-sectional view of a top view of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 1 at A;

FIG. 4 is an enlarged view of a portion of FIG. 2 at B;

in the figure, the square disc socket comprises a cover plate 1, a cover plate 2, a cavity 3, a square disc socket 4, a conductive rubber ring 5, a first threaded hole 6, a mounting through hole 7, a second threaded hole 8, a cylindrical head screw 9, a conductive rubber pad 10, a countersunk head screw 11, a first contact part 12, a groove 13, a second contact part 14 and a U-shaped groove.

Detailed Description

In fig. 1, the utility model discloses a square apron 1, the upper end open-ended cavity 2 that uses with the cooperation of

apron

1, 3 fixed mountings of square plate socket are on 2 lateral walls of cavity, and the symmetry is equipped with 4U type grooves 14 on two lateral walls that the cavity 2 is adjacent with 3 lateral walls of square plate socket are equipped with, and U type groove 14 bottom is equipped with mounting hole 6. The cover plate 1 and the cavity 2 are made of aluminum alloy, and a compact insulating oxide film is generated through surface anodic oxidation treatment, so that the corrosion resistance effect is achieved. The spraying of

apron

1, 2 surfaces of cavity has three proofings lacquer to further improve the utility model discloses a protective properties makes it not corroded under damp and hot, mould, salt fog condition metal material. The square disc socket 3 is a metal shell waterproof socket, and the surface of the square disc socket is conductive. When the tool is used, bolts penetrate through the 4 installation through holes 6 at the bottom of the cavity 2 from top to bottom through the U-shaped groove 14 and are fixed in the installation frame or the cabinet, and the bolts in the U-shaped groove 14 are screwed down by using a sleeve tool. Compared with the existing structure adopting the extending type mounting lug, the problem of lug breakage is easy to occur, the structure adopting the mounting hole arranged in the U-shaped groove 14 increases the contact area between the mounting through hole 6 and the bottom plate of the cavity 2, improves the shock resistance of the shielding box, and is particularly suitable for being used on motor vehicles with complex vibration environments. The junction of the cavity 2 and the cover plate 1 is sealed by a conductive rubber ring 4, and the junction of the outer side wall of the cavity 2 and the square disc socket 3 is sealed by a conductive rubber gasket 9, so that a waterproof effect is achieved. The utility model discloses under adverse circumstances such as damp and hot, salt fog, mould, still can the stable performance, electronic components, circuit board in messenger cavity 2 avoid the erosion of damp and hot, steam. The utility model discloses protection level is high, and antidetonation and protecting effect are good, and waterproof and shielding property is reliable and stable, simple structure, small, light in weight, it is with low costs.

In fig. 2, the cover plate 1 and the cavity 2 are fixedly covered by a countersunk head screw 10. A plurality of first threaded holes 5 used for being matched with the countersunk screws 10 are formed in the four sides of the opening of the cavity 2, and the first threaded holes 5 are blind holes. An annular groove 12 is formed in the opening of the cavity 2 and the inner side of the first threaded hole 5, and a conductive rubber ring 4 is arranged in the groove 12. The first threaded hole 5 is located outside the conductive rubber ring 4, and external rainwater cannot penetrate into the cavity 2 from the threaded hole. 2 square dish sockets 3 are fixed on the lateral wall of the cavity 2 in a horizontal arrangement. The cavity 2 is equipped with 4U type grooves 14 with being equipped with on two adjacent lateral walls of 3 lateral walls of square plate socket on the symmetry, and U type groove 14 bottom is equipped with installation through-hole 6.

In fig. 3, an annular groove 12 is formed in the opening of the cavity 2 and inside the first threaded hole 5, and a conductive rubber ring 4 is arranged in the groove 12. The lower surface of the cover plate 1 is provided with a first contact part 11 matched with the groove 12, and the first contact part 11 is used for removing an oxide layer on the surface of the aluminum alloy. After the cover plate 1 is fastened with the cavity 2, the conductive rubber ring 4 is stressed and compressed, and is fully contacted with the inner walls of the first contact part 11 and the groove 12 from top to bottom and from left to right, so that the cover plate 1, the conductive rubber ring 4 and the cavity 2 are ensured to be reliably conductive.

In fig. 4, the square disc socket 3 is fixedly mounted on the outer side wall of the cavity 2 through a cylindrical head screw 8, a second threaded hole 7 used for being matched with the cylindrical head screw 8 is correspondingly arranged on the side wall of the cavity 2, and the second threaded hole 7 is a blind hole and does not penetrate through the wall of the cavity 2. A conductive rubber pad 9 is arranged between the square disc socket 3 and the outer side wall of the cavity 2, and the thickness of the conductive rubber pad 9 is 1 mm-3 mm. A second contact part 13 is arranged between the outer side wall of the cavity 2 and the conductive rubber pad 9, and the second contact part 13 is used for removing an oxide layer on the surface of the aluminum alloy. The second threaded hole 7 is located on the outer side of the conductive rubber pad 9, and external rainwater cannot penetrate into the cavity 2 from the threaded hole. The square disc socket 3 is a metal shell, and the outer surface of the square disc socket is conductive. The conductive rubber pad 9 is positioned between the square disc socket 3 and the cavity 2, so that the square disc socket 3 and the cavity 2 can be reliably conductive, the cavity 2 is sealed, and rainwater and moisture are prevented from entering the cavity 2.

Claims

1. A waterproof shielding box, its characterized in that: the device comprises a square cover plate (1) and a cavity (2) which is matched with the cover plate (1) and is provided with an opening at the upper end, wherein the cover plate (1) and the cavity (2) are fixedly covered tightly through a countersunk head screw (10); a plurality of first threaded holes (5) used for being matched with countersunk screws (10) are formed in the four sides of the opening of the cavity (2), annular grooves (12) are formed in the upper opening of the cavity (2) and the inner sides of the first threaded holes (5), conductive rubber rings (4) are arranged in the grooves (12), a plurality of horizontally arranged square disc sockets (3) are fixedly arranged on the outer side wall of the cavity (2) through cylindrical head screws (8), second threaded holes (7) used for being matched with the cylindrical head screws (8) are correspondingly formed in the side wall of the cavity (2), and conductive rubber pads (9) are arranged between the square disc sockets (3) and the outer side wall of the cavity (2); a plurality of U-shaped grooves (14) are symmetrically formed in two adjacent outer side walls of the cavity (2) and the outer side wall provided with the square disc socket (3), and mounting through holes (6) are formed in the bottoms of the U-shaped grooves (14); the lower surface of the cover plate (1) is provided with a first contact part (11) matched with the groove (12), and a second contact part (13) is arranged between the outer side wall of the cavity (2) and the conductive rubber pad (9).

2. The waterproof shield case according to claim 1, characterized in that: the cover plate (1) and the cavity (2) are made of aluminum alloy, and a layer of compact insulating oxide film is generated through surface anodic oxidation treatment.

3. The waterproof shield case according to claim 1, characterized in that: the square disc socket (3) is a metal shell waterproof socket, and the surface of the square disc socket is conductive.

4. The waterproof shield case according to claim 1, characterized in that: and oxide layers on the surface of the aluminum alloy are removed from the inner wall of the groove (12), the first contact part (11) and the second contact part (13).

5. The waterproof shield case according to claim 1, characterized in that: the first threaded hole (5) and the second threaded hole (7) are both blind holes.

6. The waterproof shield case according to claim 1, characterized in that: and three-proofing paint is sprayed on the outer surfaces of the cover plate (1) and the cavity (2).

7. The waterproof shield case according to claim 1, characterized in that: the second threaded hole (7) is positioned on the outer side of the conductive rubber pad (9).