CN220798930U

CN220798930U - Shielding structure and mainboard

Info

Publication number: CN220798930U
Application number: CN202322257658.8U
Authority: CN
Inventors: 龙勇才
Original assignee: Shenzhen Sunway Communication Co Ltd
Current assignee: Shenzhen Sunway Communication Co Ltd
Priority date: 2023-08-21
Filing date: 2023-08-21
Publication date: 2024-04-16
Anticipated expiration: 2033-08-21

Abstract

The utility model discloses a shielding structure and a main board, wherein the shielding structure is used for shielding electromagnetic interference, the shielding structure comprises a shielding frame and a shielding cover, a shielding area for placing electronic elements is formed on the inner side of the shielding frame, the shielding frame is provided with a first opening which is penetrated towards the shielding cover, the first opening is used for a flat cable to pass through, the shielding cover is arranged on the shielding frame so as to cover the shielding area, the shielding cover is provided with a second opening which is penetrated towards the shielding frame, the position of the second opening corresponds to the first opening, the upper side edge of the second opening is provided with a plurality of elastic sheets at intervals, and the elastic sheets are used for limiting the flat cable. The shielding structure limits the flat cable through the elastic sheet without additional foam, simplifies the installation steps, reduces the cost, has good limiting effect, ensures that the limit of the elastic sheet to the flat cable cannot fail along with the time, has stable limiting effect, and can still realize better fixing effect through the elastic sheet when the flat cable is different in thickness due to processing errors.

Description

Shielding structure and mainboard

Technical Field

The utility model relates to the technical field of shielding cases, in particular to a shielding structure and a main board.

Background

The shielding structure, namely a shielding cover, is a device for blocking or weakening electromagnetic radiation, is commonly used in electronic equipment or circuits, can limit the interference of external electromagnetic signals to equipment and prevent the interference of internal electromagnetic radiation to external environment, and the shielding cover is internally provided with relatively complex electronic elements, so that the wires need to be led out from the internal lead wires and limited to avoid the problem of damage to the lead wires caused by friction between the lead wires and metal pieces.

The existing shielding cover lacks the limit structure for limiting the flat cable, when the flat cable is installed, the flat cable is required to be limited by the foam, the cost is high, the installation process is complex, and the efficiency is low.

Disclosure of Invention

The utility model mainly aims to provide a shielding structure and a main board, and aims to solve the problem that the existing shielding cover lacks a limiting structure for limiting a flat cable.

To achieve the above object, the present utility model provides a shielding structure for shielding electromagnetic interference, the shielding structure comprising:

a shielding frame, the inner side of which is formed with a shielding area for placing electronic components;

a shielding cover mounted on the shielding frame to cover the shielding region;

the shielding frame is provided with a first opening penetrating towards the shielding cover, and the first opening is used for allowing a flat cable to pass through; the shielding cover is provided with a second opening which is communicated with the shielding frame and is arranged towards the shielding frame, the position of the second opening corresponds to the first opening, a plurality of elastic sheets are arranged on the upper side edge of the second opening at intervals, and the elastic sheets are used for limiting the flat cable.

Optionally, an inclination angle is formed between the elastic sheet and the flat cable.

Optionally, the bottom of the elastic piece is provided with a supporting piece, and the bottom side surface of the supporting piece is an arc-shaped surface.

Optionally, the lateral wall interval of shielding lid is equipped with a plurality of breach, and a plurality of the breach is separated the lateral wall of shielding lid is a plurality of bounding walls, a plurality of the bounding wall includes a plurality of first bounding walls and a plurality of second bounding wall.

Optionally, the medial surface of first bounding wall is equipped with first arch, the lateral surface of shielding frame seted up with first protruding complex first card hole.

Optionally, a second clamping hole is formed in the second coaming, and a second protrusion matched with the second clamping hole is arranged on the outer side face of the shielding frame.

Optionally, a plurality of heat dissipation openings are formed in the bottom of the side wall of the shielding frame.

Optionally, the shielding cover is upwards raised to have a bulge, the bulge is used for dodging the winding displacement, the shielding cover undercut has a depressed part, the depressed part is used for spacing the winding displacement.

Furthermore, the utility model also proposes a motherboard comprising a motherboard made of the shielding structure described above.

Compared with the prior art, the utility model has the beneficial effects that: according to the shielding structure, the elastic sheet is used for limiting the flat cable, no additional foam is required, the installation step is simplified, the cost is reduced, the limiting effect is good, the elastic sheet is used for limiting the flat cable and cannot lose efficacy along with the time, the limiting effect is stable, and meanwhile, when the flat cable is different in thickness due to processing errors, a good fixing effect can be achieved through the elastic sheet.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a perspective view of a shield structure of the present utility model with a flat cable mounted thereon;

fig. 2 is a perspective view of a shielding structure of the present utility model;

FIG. 3 is an exploded view of the shielding structure of the present utility model;

fig. 4 is a perspective view of an elastic sheet of the present utility model.

Reference numerals illustrate:

1. a shielding frame; 2. a shielding cover; 3. a flat cable; 11. a first opening; 12. a heat radiation port; 21. a second opening; 22. an elastic sheet; 23. a contact piece; 24. a first coaming; 25. a second coaming; 26. a first clamping hole; 27. a second protrusion; 28. a bulge; 29. a recessed portion; 241. a first protrusion; 251. and the second clamping hole.

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if the meaning of "and/or" is presented throughout this document, it is intended to include three schemes in parallel, taking "a and/or B" as an example, including a scheme, or B scheme, or a scheme where a and B meet simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

At present, the shielding cover that often uses lacks the limit structure who carries out spacing to the winding displacement, when the installation winding displacement, needs to paste the foam and carry out spacing to the winding displacement, and the cost is higher, and the installation is loaded down with trivial details, inefficiency, and simultaneously after long-time use, the adhesion of foam can drop, and leads to the spacing inefficacy to the winding displacement, and foam also can receive the influence of the laminating quality of foam to the spacing effect of winding displacement.

In order to solve the above-mentioned problems, the present utility model provides a shielding structure, and fig. 1 to 3 are specific embodiments of the shielding structure provided by the present utility model.

Referring to fig. 1 to 4, the shielding structure includes a shielding frame 1 and a shielding cover 2, a shielding area for placing electronic components is formed on the inner side of the shielding frame 1, the shielding frame 1 is provided with a first opening 11 penetrating toward the shielding cover 2, the first opening 11 is used for allowing a flat cable 3 to pass through, the shielding cover 2 is mounted on the shielding frame 1 so as to cover the shielding area, the shielding cover 2 is provided with a second opening 21 penetrating toward the shielding frame 1, the position of the second opening 21 corresponds to the first opening 11, a plurality of elastic pieces 22 are arranged on the upper side of the second opening 21 at intervals, and the elastic pieces 22 are used for limiting the flat cable 3.

The number and positions of the first openings 11 correspond to the number and positions of the interfaces of the electronic components, the distance between the bottom ends of the elastic pieces 22 and the bottom side edges of the first openings 11 in the vertical direction is larger than the thickness of the flat cable 3, when the flat cable is installed, the shielding frame 1 and the electronic components are welded on a PCB board through SMT, the flat cable 3 is placed in the first openings 11 and inserted into the interfaces of the electronic components to communicate the electronic components with the flat cable 3, and then the shielding cover 2 is installed on the shielding frame 1, so that the flat cable 3 can be limited through the elastic force of the elastic pieces 22.

According to the shielding structure disclosed by the utility model, the elastic sheet 22 is used for limiting the flat cable 3, no additional foam is required, the mounting step is simplified, the cost is reduced, the limiting effect is good, compared with the conventional foam limiting, the elastic sheet 22 is used for limiting the flat cable 3, the limiting effect is stable, and meanwhile, when the thickness of the flat cable 3 is different due to the processing error, the elastic sheet 22 can still realize a better fixing effect.

The number of the elastic pieces 22 is not limited, as long as the number of the elastic pieces 22 is greater than or equal to two, specifically, the number of the elastic pieces 22 may be set according to the size of the first opening 11, optionally, the number of the elastic pieces 22 is 4, if the number of the elastic pieces 22 is one, when the thickness of a portion of the flat cable 3 is thicker, one elastic piece 22 contacts the thicker portion of the flat cable 3, so that the whole elastic piece 22 bounces, and the contact surface between the elastic piece 22 and the flat cable 3 is small, resulting in weak limit of the flat cable 3.

The elastic sheet 22 and the flat cable 3 are arranged at an inclination angle, when the flat cable 3 is placed in the first opening 11, and the shielding cover 2 covers the shielding frame 1, the elastic sheet 22 bends due to the existence of the flat cable 3, the flat cable 3 can be compressed by the elasticity of the elastic sheet 22, so that the flat cable 3 is limited, and the flat cable 3 with different thickness can be limited by the limiting method.

Alternatively, the elastic pieces 22 may be arranged in two rows, wherein the elastic pieces 22 on the outer side are inclined from top to bottom toward the outer side of the shielding frame 1, and the elastic pieces 22 on the inner side are inclined from top to bottom toward the inner side of the shielding frame 1, so that the arrangement can better limit the flat cable 3 and prevent the flat cable 3 from moving; or the elastic sheets 22 inclined to the outside and the elastic sheets 22 inclined to the inside are arranged in a row and alternately.

The bottom of the elastic piece 22 is provided with an abutting piece 23, and the bottom side surface of the abutting piece 23 is an arc surface, so that the elastic piece 22 can be prevented from scratching the flat cable 3 when limiting the flat cable 3.

The lateral wall interval of shielding lid 2 is equipped with a plurality of breach, through the breach can reduce the weight of shielding lid 2, thereby reduce shielding structure's weight satisfies present electronic equipment's lightweight demand, and is a plurality of breach separation the lateral wall of shielding lid 2 is a plurality of bounding walls, and is a plurality of the bounding wall includes a plurality of first bounding wall 24 and a plurality of second bounding wall 25.

The inner side of the first coaming 24 is provided with a first protrusion 241, the outer side of the shielding frame 1 is provided with first clamping holes 26 matched with the first protrusion 241, and the first coamings 24, the first protrusions 241 and the first clamping holes 26 have the same number and one-to-one correspondence, and by dividing the coamings into a plurality of first coamings 24 and a plurality of second coamings 25, taking the first coamings 24 as an example, the functions are as follows: if the first protrusion 241 or the first hole 26 cannot be matched due to a machining error or a machining error, the first coaming 24 at the corresponding position may be tilted, but the other first coamings 24 may not be affected, and the combination of the shielding frame 1 and the shielding cover 2 may still be ensured.

Further, the second enclosing plate 25 is provided with a second clamping hole 251, the outer side surface of the shielding frame 1 is provided with a second protrusion 27 matched with the second clamping hole 251, and under the premise that the first clamping hole 26 is matched with the first protrusion 241, the shielding frame 1 and the shielding cover 2 are more stable in structure through the matching of the second clamping hole 251 and the second protrusion 27, so that the shielding cover 2 is ensured not to fall off easily.

The bottom of the side wall of the shielding frame 1 is provided with a plurality of heat dissipation openings 12, and the shielding area is a closed area when the shielding cover 2 covers the shielding frame 1, so that the heat dissipation of the electronic component is not facilitated, the heat dissipation of the electronic component can be effectively assisted through the heat dissipation openings 12, and the heat dissipation openings 12 are positioned at the bottom, so that the shielding effect of the shielding structure is not influenced.

The shielding cover 2 is upwards bulged with a bulge 28, the bulge 28 is used for avoiding the flat cable 3, when the shielding cover 2 covers the shielding frame 1, the flat cable 3 is pressed and deformed, the shielding cover 2 is downwards sunken with a sunken part 29, the sunken part 29 is used for limiting the flat cable 3, and the flat cable 3 in the shielding area is further limited through the sunken part 29.

The utility model also proposes a motherboard comprising a shielding structure, the specific structure of which refers to the above embodiment, and since the motherboard comprises all the solutions of all the embodiments of the shielding structure, it has at least the same technical effects as the shielding structure, which are not described herein.

The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. A shielding structure for shielding electromagnetic interference, the shielding structure comprising:

a shielding cover mounted on the shielding frame to cover the shielding region;

2. The shielding structure of claim 1 wherein said flexible sheet is disposed at an oblique angle to said flat cable.

3. The shielding structure as set forth in claim 1, wherein the bottom end of said elastic sheet is provided with an abutment sheet, and the bottom side surface of said abutment sheet is an arcuate surface.

4. The shielding structure of claim 1, wherein a plurality of notches are provided in the side wall of the shielding cover at intervals, the plurality of notches separating the side wall of the shielding cover into a plurality of coamings, the plurality of coamings including a plurality of first coamings and a plurality of second coamings.

5. The shielding structure of claim 4 wherein the inner side of the first shroud is provided with a first protrusion and the outer side of the shielding frame is provided with a first clamping hole which is matched with the first protrusion.

6. The shielding structure of claim 5 wherein said second shroud defines a second aperture and wherein said shield is provided with a second projection on an outer side thereof which mates with said second aperture.

7. The shielding structure of claim 1, wherein the sidewall bottom of the shielding frame is provided with a plurality of heat dissipation openings.

8. The shielding structure of claim 1, wherein the shielding cover is upwardly raised with a ridge for avoiding the flat cable, and is downwardly recessed with a recess for limiting the flat cable.

9. A motherboard, characterized in that it comprises a shielding structure according to any of claims 1-8.