CN108064469B

CN108064469B - Shielding case

Info

Publication number: CN108064469B
Application number: CN201680042778.6A
Authority: CN
Inventors: 郭继龙
Original assignee: Shenzhen Royole Technologies Co Ltd
Current assignee: Shenzhen Royole Technologies Co Ltd
Priority date: 2016-12-15
Filing date: 2016-12-15
Publication date: 2020-04-14
Anticipated expiration: 2036-12-15
Also published as: CN108064469A; WO2018107420A1

Abstract

The utility model provides a shield cover (100), includes the cover body (1) and centre gripping support (2), and cover body (1) includes roof (11) and closed enclose locates peripheral lateral wall (12) of roof (11), and centre gripping support (2) are closed fixed to circuit board (200), and centre gripping support (2) are acceptd and centre gripping lateral wall (12) keep away from inserting end (124) of roof (11).

Description

Shielding case

Technical Field

The invention relates to the technical field of electromagnetic shielding, in particular to a shielding case.

Background

The shielding case is used as a basic component of EMC (Electromagnetic Compatibility, which means that Electromagnetic energy generated by a device does not interfere with other devices, and is not interfered by Electromagnetic energy of other devices), and is widely applied in the fields of military industry, medical treatment, industrial control, electronics, and the like. In consumer electronic products, as the operating frequency of circuit designs becomes higher and higher, the design of shielding cases becomes more and more important. How to promote the shielding effect of shield cover through the structural design of shield cover, for the direction of industry research.

Disclosure of Invention

The technical problem to be solved by the embodiment of the invention is to provide a shielding case with good shielding effect.

In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:

the embodiment of the invention provides a shielding cover which comprises a cover body and a clamping support, wherein the cover body comprises a top wall and a side wall which is enclosed around the periphery of the top wall in a closed mode, the clamping support is fixed to a circuit board in a closed mode, and the clamping support accommodates and clamps an insertion end, far away from the top wall, of the side wall.

Compared with the prior art, the invention has the following beneficial effects:

because the centre gripping support can accept and centre gripping the lateral wall insert the end, and closed fixed extremely the circuit board, consequently the centre gripping support seals and connects continuously the cover body with between the circuit board, the cover body with no gap between the circuit board, the shield cover can completely cover treat shielded components and parts on the circuit board, the electromagnetic wave of components and parts is shielded completely, the shielding effect of shield cover is good.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive labor.

Fig. 1 is a plan view of a shield case provided in an embodiment of the present invention in a use state.

Fig. 2 is a sectional view taken along line ii-ii in fig. 1.

Fig. 3 is an enlarged schematic view of the structure at iii in fig. 2.

Fig. 4 is a schematic structural diagram of a clamping bracket according to an embodiment of the present invention.

Fig. 5 is an enlarged schematic view of another structure at iii in fig. 2.

Fig. 6 is an enlarged schematic view of yet another structure at iii in fig. 2.

Detailed Description

Embodiments of the present invention will be described below with reference to the accompanying drawings.

Referring to fig. 1, fig. 2 and fig. 4 together, an embodiment of the present invention provides a shielding can 100, where the shielding can 100 is used for performing an electromagnetic shielding function on a component 300 on a circuit board 200.

The shield case 100 includes a case body 1 and a clip bracket 2 hermetically fixed to a circuit board 200. The cover 1 comprises a top wall 11 and a side wall 12 which is connected to the periphery of the top wall 11 in a closed manner. The gripping bracket 2 receives and grips the insertion end 124 of the side wall 12 remote from the top wall 11.

The clamping bracket 2 is hermetically fixed to the circuit board 200, that is, the clamping bracket 2 is seamlessly connected with the circuit board 200, and the projection of the clamping bracket 2 on the circuit board 200 is closed and continuous. The side wall 12 is hermetically connected to the periphery of the top wall 11, that is, the side wall 12 is seamlessly connected with the top wall 11, and the projection of the side wall 12 on the top wall 11 is closed and continuous.

It will be appreciated that the extension of the holding bracket 2 in the plane parallel to the top wall 11 is matched to the extension of the insertion end 124 of the side wall 12, so that the holding bracket 2 can receive and hold the insertion end 124, and the insertion end 124 and the holding bracket 2 are continuously and seamlessly connected. In particular, the side walls 12 are closed and connected to form a square, and correspondingly, the holding bracket 2 is also square. In another embodiment, the side wall 12 is closed to form a circle, and the holding bracket 2 is also circular.

In this embodiment, the clamping bracket 2 may have a free end 201 and a fixed end 202 opposite to each other, and a receiving cavity 20 formed between the free end 201 and the fixed end 202. The insertion end 124 of the sidewall is received in the receiving cavity 20, the free end 201 clamps the sidewall, and the fixed end 202 is hermetically fixed to the circuit board 200. Because the clamping bracket 2 is accommodated and clamped in the insertion end 124 of the side wall 12 and is hermetically fixed to the circuit board 200, the clamping bracket 2 is hermetically and continuously connected between the cover body 1 and the circuit board 200, no gap exists between the cover body 1 and the circuit board 200, the shielding case 100 can completely cover the component 300 to be shielded on the circuit board 200, the electromagnetic wave of the component 300 is completely shielded, and the shielding effect of the shielding case 100 is good.

Referring to fig. 1 to 4, as an alternative embodiment, the clamping bracket 2 includes two clamping arms 21 symmetrically disposed. Each clamp arm 21 includes a clamp section 211 and a connecting section 212 extending from the clamp section 211. Two of the clamping segments 211 are located at the free end 201 of the clamping bracket 2. Two of the connecting segments 212 are located at the fixed end 202 of the holding bracket 2. The two clamping sections 211 are combined to form a clamping structure 210, the ends of the two connecting sections 212 far away from the clamping sections 211 are connected with each other, and the insertion end 124 penetrates through the clamping structure 210 and abuts against the two connecting sections 212.

In this embodiment, since the insertion end 124 abuts against the two connecting segments 212 (as shown in the thickened portion of fig. 3), there is no gap between the two connecting segments 212 and the sidewall 12, the clamping bracket 2 and the cover body 1 are connected in a closed and continuous manner, so as to achieve double sealing, and the electromagnetic wave of the component 300 located in the shielding case 100 is difficult to radiate through the double sealing, so that the shielding effect of the shielding case 100 is excellent.

Optionally, when two of the clamping segments 211 clamp the sidewall 12 and the insertion end 124 abuts two of the connecting segments 212, the two clamping segments 211 continuously abut against the sidewall 12 (as shown in the bold area in fig. 3), and the seamless connection between the clamping segments 211 and the sidewall 12 is achieved. The sidewall 12 includes oppositely disposed inner and

outer surfaces

121, 122. The inner surface 121 abuts the clamping segment 211 to form a first reseal, the inner surface 121 abuts the connecting segment 212 to form a second reseal, the outer surface 122 abuts the clamping segment 211 to form a third reseal, and the outer surface 122 abuts the connecting segment 212 to form a fourth reseal. In short, the side wall 12 and the clamping bracket 2 have four contact positions (as shown in the bold area in fig. 3), and the shielding cover 100 realizes quadruple sealing, thereby further improving the shielding effect.

It can be understood that when the cover 1 and the clamping bracket 2 cooperate to realize quadruple sealing, the sidewall 12 divides the internal space of the clamping bracket 2 into two sealed spaces independent from each other, and electromagnetic waves inside and outside the shielding case 100 are difficult to pass through.

In other embodiments, the clamping structure 210 may also be used only for clamping the side wall 12, two clamping segments 211 intermittently interfere with the side wall 12, a gap exists between the clamping segments 211 and the side wall 12, and the shielding cage 100 is connected and sealed in a closed and continuous manner and in a double sealing manner by the interference connection between the two connecting segments 212 and the side wall 12. Specifically, every the centre gripping section 211 all includes a plurality of sub-centre gripping sections that the interval set up, and is adjacent fretwork setting between the sub-centre gripping section. All of the sub-clamping sections abut the side wall 12 such that two of the clamping sections 211 intermittently abut the side wall 12. The plurality of sub-clamping segments of the two clamping segments 211 are arranged opposite to each other or offset from each other.

Optionally, the clamping bracket 2 is made of a metal material. The clamping bracket 2 is slightly deformed by using the toughness of the metal material, and has a rebound force in the deformed state, so that the side wall 12 can pass through the clamping structure 210 and be clamped by the clamping structure 210.

Optionally, a gap is formed between the two clamping segments 211, and the width of the gap is smaller than the thickness of the side wall 12. When the side wall 12 passes through the clamping structure 210, the clamping sections 211 are pushed open by pressing, so that the clamping sections 211 are deformed, and the clamping sections 211 generate a rebound force after being pressed, thereby clamping the side wall 12.

Further, the width of the gap may be less than half the thickness of the sidewall 12 to increase the clamping force of the clamping structure 210.

Further, the two clamping sections 211 are against each other, so that the clamping structure 210 has a strong clamping force and is difficult to machine.

Optionally, the two clamping arms 21 are integrally formed, so that the processing technology of the clamping bracket 2 is simplified, the processing difficulty is reduced, and the connection relationship between the two clamping arms 21 is more reliable. The two clamping arms 21 are integrally formed by the same metal plate, so that the deformation state or different rebound force caused by different material properties can be avoided, and the processing yield of the clamping support 2 is ensured.

As an alternative embodiment, as shown in fig. 3 and 4, an angle is formed between two of the connecting segments 212. At this time, the two connecting sections 212 form a V-like structure, and the insertion end 124 of the sidewall 12 can easily abut against the two connecting sections 212 after passing through the clamping structure 210. The edges of the inner surface 121 and the outer surface 122 remote from the top wall 11 abut against the two connecting sections 212, respectively.

The connecting section 212 may be a straight or curved section. When the connecting section 212 is a curved section, an included angle is formed between connecting lines at two ends of the two connecting sections 212. The included angle may be equal to or less than 150 °.

As an alternative embodiment, as shown in fig. 5, the two connecting sections 212 together form a U-shaped channel into which the side walls 12 are inserted, and the insertion end 124 is at least partially received. The inner surface 121 and the outer surface 122 of the side wall 12 are respectively in surface connection with two inner groove walls of the U-shaped groove (as shown in the thickened part in fig. 5), so that the connection area is increased, and the sealing performance of the shielding case 100 is further improved.

Referring to fig. 2 and 6, as an alternative embodiment, the outer end face 123 of the insertion end 124 away from the bottom of the top wall 11 is a cambered surface, so that the side wall 12 can be easily connected with the two connecting segments 212, i.e. the contact area between the bottom of the insertion end 124 and the side wall 12 is larger (as shown in the bold area of fig. 6).

Alternatively, the shape of the outer end face 123 may match the shape of the surface of the two connecting segments 212 facing each other, so that the contact area between the outer end face 123 and the two connecting segments 212 is larger, and the sealing effect of the sealing cover 100 is better.

Referring to fig. 2, fig. 3, fig. 5 and fig. 6, as an alternative embodiment, one end of the two connecting segments 212 away from the clamping segment 211 is soldered to the circuit board 200. The connecting section 212 is partially soldered to the circuit board 200, rather than being soldered to the circuit board 200 entirely, which can save the space of the circuit board 200 occupied by the connecting section 212, so that the circuit board 200 has more space for arranging other components or lines, which is beneficial to the miniaturization of the circuit board 200. Wherein the connection segment 212 may be soldered to an inner layer of the circuit board 200.

Referring to fig. 2 to 6, as an alternative embodiment, each of the holding arms 21 includes an intermediate section 213 smoothly connected between the holding section 211 and the connecting section 212. The two middle sections 213 are protruded towards the direction away from each other, so that the length of the clamping arm 21 is longer, the deformation range is larger, and the elastic recovery performance is better. At this time, the holding cavity 20 is formed in the holding bracket 2.

Optionally, an end of the clamping section 211, which is far away from the middle section 213, extends toward the inside of the clamping bracket 2, so that the height of the clamping bracket 2 can be reduced, and the volume of the shielding case 100 is small. As shown in fig. 3 to 6, the holding bracket 2 has a heart shape.

Of course, in other embodiments, the end of the clamping segment 211 away from the middle segment 213 may also extend to the outside of the clamping bracket 2.

The above embodiments of the present invention are described in detail, and the principle and the implementation of the present invention are explained by applying specific embodiments, and the above description of the embodiments is only used to help understanding the method of the present invention and the core idea thereof; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. A shielding cover comprises a cover body and a clamping support, wherein the cover body comprises a top wall and a side wall which is enclosed and arranged on the periphery of the top wall in a closed mode;

the centre gripping support is including two centre gripping arms that the symmetry set up, every the centre gripping arm all include the centre gripping section and certainly the linkage segment that the centre gripping section extends, two the centre gripping section merges and forms and presss from both sides tight structure, two keeping away from of linkage segment the terminal interconnect of centre gripping section and two form the V-arrangement structure between the linkage segment.

2. The shielding cage of claim 1, wherein said sidewall divides said holding bracket interior space into two sealed spaces independent of each other.

3. The shielding cage of claim 2, wherein said insertion end passes through said clamping structure and abuts both of said connector segments.

4. A shielding cage as set forth in claim 3, wherein two of said clip segments continuously abut said side walls in a plane parallel to said top wall.

5. A shield according to claim 3, wherein the two clip arms are integrally formed.

6. The shielding cage of claim 3, wherein an included angle is formed between two of said connecting segments, said included angle being equal to or less than 150 °.

7. The shielding cage of claim 3, wherein said two connecting sections together define a U-shaped channel, said insertion end being received in said U-shaped channel.

8. A shielding cage according to any one of claims 3 to 7, wherein the outer end face of the insertion end remote from the top wall is cambered.

9. A shielding cage according to any one of claims 3 to 7, wherein the ends of the two connecting sections which are connected to each other are soldered to the circuit board.

10. A shielding cage according to any one of claims 3 to 7, wherein each of said clip arms includes an intermediate section which is smoothly connected between said clip section and said connecting section, both said intermediate sections being convex in a direction away from each other.

11. The shield of claim 10, wherein an end of the clip segment distal from the intermediate segment extends inwardly of the clip bracket.