CN210725718U

CN210725718U - Reliable electromagnetic shielding shell structure

Info

Publication number: CN210725718U
Application number: CN201922024936.9U
Authority: CN
Inventors: 韦宗超
Original assignee: Sichuan Falcons Technology Co ltd
Current assignee: Sichuan Falcons Technology Co ltd
Priority date: 2019-11-21
Filing date: 2019-11-21
Publication date: 2020-06-09
Anticipated expiration: 2029-11-21

Abstract

The utility model discloses a reliable electromagnetic shield's shell structure, including aluminum alloy shell, circuit board and apron, the apron is three layer construction, and it is the insulating layer with the bottom respectively for the top layer, is the conducting layer in the middle of, realizes a little region that the conducting layer exposes through drilling to the insulating layer in apron corner position to cover plate contact pin accessory welding, aluminum alloy shell has the mistake proofing design, and includes the trompil of cooperation apron contact pin, has downthehole to strengthen aluminum alloy shell and the crown spring that the apron contact pin closely cooperates.

Description

Reliable electromagnetic shielding shell structure

Technical Field

The utility model relates to a power equipment technical field specifically, relates to a shell structure of reliable electromagnetic shield.

Background

The existing electromagnetic shielding shell structure mostly has the problem that a cover plate and a shell are not in reliable connection, the cover plate and the shell do not form a closed equipotential body, and the electromagnetic shielding effect is not ideal. The contact between the partial structure cover plate and the shell is not good, and when an alternating current withstand voltage test is carried out, arc discharge can occur on the contact surface, and arc sound is generated.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a reliable electromagnetic shield's shell structure lets apron inside conducting layer and aluminum alloy housing pass through the welding contact pin, again by the elasticity and the contact pin of hat spring contact surface closely cooperate to make aluminum alloy shell closely link to each other with the apron, realize reliable electrical connection.

In order to realize the above object of the present invention, the utility model provides a reliable electromagnetic shield's shell structure, the structure includes:

the casing, circuit board and apron, the circuit board is installed in the casing, the apron encapsulates the casing, four chamfer department partial designs in the casing have a set of boss, including first boss and second boss, the height that highly is greater than the second boss of first boss, second boss upper surface flushes with the circuit board bottom surface, crown spring mounting hole has been seted up on the first boss, crown spring mounting hole installs crown spring in, the apron is three layer construction, from last to including the top layer down, intermediate level and bottom, the top layer is the insulating layer with the bottom, the intermediate level is the conducting layer, the position department that corresponds with first boss on the bottom insulating layer has seted up the connecting hole, connecting hole department exposes the conducting layer, the contact pin upper end passes the connecting hole and welds on the conducting layer, the contact pin lower extreme injects crown spring mounting hole in and.

Further, the shell is an aluminum alloy shell.

Further, the cover plate is an aluminum alloy cover plate.

Furthermore, 2 crown spring mounting holes are formed in the first boss.

The utility model provides a one or more technical scheme has following technological effect or advantage at least:

the utility model provides a structure makes aluminum alloy shell closely link to each other with the apron, realizes reliable electrical connection.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention;

FIG. 1 is a schematic cross-sectional view of an aluminum alloy shell according to the present invention;

fig. 2 is a schematic top view of the middle housing of the present invention;

FIG. 3 is a schematic view of the structure of the middle housing of the present invention;

fig. 4 is a schematic diagram of the circuit board structure of the present invention;

FIG. 5 is a schematic diagram of the structure of the middle cover plate of the present invention;

fig. 6 is a partial cross-sectional view of an assembly drawing of the present invention (with the pin mated to the aluminum alloy housing);

wherein, 1: crown spring mounting hole, 2: housing error protection boss (i.e., first boss), 3: PCB level boss (i.e. second boss), 4: rivet, 5: PCB error-protection gap, 6: cover plate pin pad, 7: and the cover plate pins.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflicting with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and the scope of the present invention is not limited by the specific embodiments disclosed below.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purposes of limitation.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

Referring to fig. 1-6, an embodiment of the present invention provides a housing structure of a reliable electromagnetic screen, including an aluminum alloy housing, a circuit board and a cover plate, wherein the aluminum alloy housing is designed with a set of bosses respectively located on the same side at four chamfers, one set of bosses is higher than the other set of bosses, while the bosses at the lower positions are flush with the bottom surface of the circuit board, two smaller holes are formed on the higher bosses, and a crown spring is respectively disposed in each hole; the circuit board adopts a unique design, and the design is matched with the high-low bosses to effectively prevent placement errors in the assembly process; the apron is three layer construction, top layer and bottom are the insulating layer, the intermediate level is the conducting layer, the top layer can effectively prevent the effective insulation of inlayer conducting layer and circuit board with the bottom, carry out the trompil with the insulating layer at the angle that corresponds higher boss position, expose the conducting layer, and use electrically conductive contact pin to weld on the conducting layer, make conducting layer and contact pin realize reliable electrical connection, after covering the apron, the contact pin injects in the hole on the aluminum alloy casing boss, the crown spring receives the contact pin extrusion, realize in close contact with the contact pin automatically, thereby make apron and aluminum alloy casing realize effectual electrical connection.

While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A housing structure for reliable electromagnetic shielding, said structure comprising:

2. A reliable electromagnetically shielded enclosure structure as claimed in claim 1, wherein the case is an aluminum alloy case.

3. A reliable electromagnetic shielding casing structure as defined in claim 1, wherein the cover plate is an aluminum alloy cover plate.

4. A casing structure of reliable electromagnetic shielding according to claim 1, wherein the first boss has 2 crown spring mounting holes formed therein.