CN200944728Y - Screening arrangement and electronic product using the same - Google Patents

Abstract

A shielding device includes a shielding shell, a shielding frame, a first conductor and a supporting frame. The shielding shell includes an outer surface, a plurality of stopping parts and a plurality of positioning parts, and the stopping parts and the positioning parts respectively protrude from the outer surface. The shielding frame is installed on the front end of the shielding shell, and includes a body, a plurality of elastic pieces and a plurality of receiving holes, the elastic pieces respectively protrude from the inner surface of the body, and the receiving holes penetrate the body and accommodate The positioning part. The first conductor is installed on the outside of the shield frame. The supporting frame is installed on the front end of the shielding shell and leans against the shielding frame. The support frame includes a plurality of support parts and a support body, the support part is bent from the support body, the stop part of the shielding shell is against one of the support parts, and the support part is used to support the the first conductor. Due to the first conductor, there is no gap between the shielding device and the front plate of the chassis, thereby effectively shielding electromagnetic interference.

Description

Shielding device and electronic product using said shielding device

technical field

The utility model relates to a shielding device, in particular to a shielding device capable of effectively shielding electromagnetic interference.

Background technique

In the optical communication system, the transceiver module provides bidirectional data transmission between the electrical interface and the optical data link. The transceiver module can receive electrical signals, convert them into corresponding optical signals and transmit them in the optical network; at the same time, the transceiver module can also receive optical signals, convert them into electrical signals and transmit them to the electrical interface.

In the prior art, the transceiver module is installed on the printed circuit board of the host computer, input/output system, peripheral device or switch. The transceiver module is plugged into a metal shell mounted on a printed circuit board. The metal shell generally includes two parallel side walls, a rectangular top plate, a rectangular bottom plate, a front end and a rear end, which are easy to connect to each other and easy to install On printed circuit boards, used to eliminate static electricity accumulation and as an electromagnetic shielding case. After the transceiver module casing is combined with the printed circuit board, the combined whole is installed in the chassis, and the front end of the transceiver module casing is inserted into the opening of the front panel of the chassis. Although this kind of transceiver module housing can shield most of the electromagnetic interference, a small amount of electromagnetic waves will still leak from the front opening, between the front end and the front panel of the chassis, and between the rear end and the circuit board, so that it cannot effectively shield electromagnetic waves. interference.

Utility model content

In order to solve the above-mentioned deficiencies in the prior art, it is necessary to provide a shielding device capable of effectively shielding electromagnetic interference.

It is also necessary to provide an electronic product with the above-mentioned shielding device.

A shielding device includes a shielding shell, a shielding frame, a first conductor and a supporting frame. The shielding shell includes an outer surface, a plurality of stopping parts and a plurality of positioning parts, and the stopping parts and the positioning parts respectively protrude from the outer surface. The shielding frame is installed on the front end of the shielding shell, and includes a body, a plurality of elastic pieces and a plurality of receiving holes, the elastic pieces respectively protrude from the inner surface of the body, and the receiving holes penetrate the body and accommodate The positioning part. The first conductor is installed on the outside of the shield frame. The supporting frame is installed on the front end of the shielding shell and leans against the shielding frame. The support frame includes a plurality of support parts and a support body, the support part is bent from the support body, the stop part of the shielding shell is against one of the support parts, and the support part is used to support the the first conductor.

An electronic product includes a circuit board, a shielding device and a case. The case includes a front panel on which the front end of the shielding device is mounted. The shielding device includes a shielding casing installed on the circuit board, a shielding frame and a supporting frame, a first conductor and a second conductor. The first conductor is installed on the outside of the shield frame. The second conductor is installed at the rear end of the shielding case and abuts against the rear wall and the side wall. The shielding shell includes an outer surface, a plurality of stopping parts and a plurality of positioning parts, and the stopping parts and the positioning parts respectively protrude from the outer surface. The shielding frame is installed on the front end of the shielding shell, and includes a body, a plurality of elastic pieces and a plurality of receiving holes, the elastic pieces respectively protrude from the inner surface of the body, and the receiving holes penetrate the body and accommodate The positioning part. The supporting frame is installed on the front end of the shielding shell and leans against the shielding frame. The support frame includes a plurality of support parts and a support body, the support part is bent from the support body, the stop part of the shielding shell is against one of the support parts, and the support part is used to support the the first conductor.

Because the shielding device includes a first conductor, when the shielding device is installed on the front panel of the case, there will be no gap between the shielding device and the front board, so that electromagnetic waves generated by other electronic components outside the case will not interfere with the electronic components inside the case . At the same time, the electromagnetic waves generated by the electronic components inside the case will not interfere with the electronic components outside the case.

Description of drawings

The utility model will be further described below in conjunction with the embodiments with reference to the accompanying drawings.

Fig. 1 is a three-dimensional exploded view of a shielding device in an embodiment of the present invention.

Fig. 2 is a three-dimensional bottom view of the shielding case in Fig. 1 .

FIG. 3 is a three-dimensional assembly view of the shielding shell, the first conductor and the support frame in FIG. 1 .

Fig. 4 is a three-dimensional assembly view of the shielding device assembled on the circuit board in the embodiment of the present invention.

FIG. 5 is a perspective assembly view of the assembly in FIG. 4 assembled to the front panel of the chassis.

Detailed ways

Referring to FIG. 1 and FIG. 4 , a shielding device 100 according to a new embodiment of the present invention is disclosed. The shielding device 100 is mounted on a circuit board 200 and includes a shield frame 10 , a first conductor 20 , a support frame 30 , a shield case 40 and a second conductor 50 .

Please refer to FIG. 2 at the same time, the shielding shell 40 is made of phosphor bronze or other metal materials, and it is roughly a hollow cuboid. The shielding case 40 includes a top wall 42, a pair of side walls 44 parallel to each other and perpendicular to the top wall 42, a rear wall 46 vertically connected to the top wall 42 and the side walls 44, and a rear wall 46 parallel to the top wall 42. And a bottom wall 48 vertically connected to the side wall 44 . The top wall 42 , the side wall 44 , the rear wall 46 and the bottom wall 48 jointly define a receiving space 400 for receiving a transceiver module (not shown). Bottoms of the side walls 44 respectively extend a plurality of pins 442 toward the circuit board 200 , and the pins 442 are used for mounting the shielding case 40 on the circuit board 200 . An opening 480 is defined at the rear of the bottom wall 48 , and the opening 480 communicates with the receiving space 400 . An electrical connector (not shown) mounted on the circuit board 200 is electrically connected to the transceiver module through the opening 480 . The bottom wall 48 further includes a tongue 482 and a pair of positioning portions 484 . The tongue 482 is formed in the middle of the front end of the bottom wall 48 , and the positioning portions 484 are located on two sides of the tongue 482 .

The shielding shell 40 also includes an outer surface 49, an inner surface 47 opposite to the outer surface 49, a plurality of stoppers 424 and a plurality of holding parts 45, the stoppers 424 and the holding parts 45 are respectively formed by the inner Surface 47 is stamped towards outer surface 49 . The blocking portion 424 and the holding portion 45 are spaced apart by a certain distance and both are located at the front end of the shielding case 40 , while the holding portion 45 is close to the opening of the front end of the shielding case 40 . The stop portion 424 is located on the top wall 42, the holding portion 45 is respectively located on the top wall 42, the side wall 44 and the bottom wall 48, the stop portion 424 and the holding portion 45 Protrude in the opposite direction.

The shield frame 10 is made of stainless steel or other metal materials, and is mounted on the front end of the shield case 40 . The shielding frame 10 includes a body 12 , a plurality of elastic pieces 14 and a plurality of receiving holes 16 , and the elastic pieces 14 respectively protrude from the inner surface of the main body 12 . The receiving hole 16 runs through the body 12 . The body 12 includes a top portion 122 , a pair of side portions 124 , a pair of bottom portions 126 and a notch 128 . The side portion 124 connects the top portion 122 and the bottom portion 126 . The gap 128 is formed between the two bottoms 126 . The width of the notch 128 is slightly larger than the width of the tongue piece 482 of the shielding shell 40 .

The first conductor 20 is roughly a hollow cuboid, which can be sleeved on the outside of the shield frame 10 . In this embodiment, the first conductor 20 is a conductive foam with a conductive adhesive on one surface. The first conductor 20 includes a concave portion 22 and four sidewalls, the concave portion 22 is located in the middle of one of the sidewalls.

The support frame 30 is used to support the first conductor 20 and is installed on the outside of the shielding case 40 . The supporting frame 30 includes a supporting body 32 , a plurality of supporting parts 34 and a plurality of welding parts 36 . The supporting body 32 includes a connecting portion 322 , a pair of holding portions 324 parallel to each other, a pair of contacting portions 326 and an opening 328 . The holding portion 324 connects the connecting portion 322 and the contacting portion 326 . The opening 328 is formed between the two contact portions 326 , and the width of the opening 328 is slightly larger than the width of the tongue 482 of the shielding case 40 . The supporting portion 34 is formed by bending vertically from the inner surface to the outer surface of the middle of the connecting portion 322 , the holding portion 324 and the contact portion 326 respectively, and is formed at both ends and two ends of the contact portion 326 . The welding portions 36 are respectively formed between adjacent support portions 34 .

The second conductor 50 is made of conductive material and has a certain degree of elasticity. It is installed at the rear end of the shielding case 40 and abuts against the rear wall 46 and the side wall 44 of the shielding case 40 . The second conductor 50 is a rectangular structure with one end open, and a conductive adhesive is provided on its inner surface 52 . The adhesive is used to stick the second conductor 50 to the rear end of the shielding case 40 .

Please refer to Fig. 3 to Fig. 5, when assembling, put the shielding frame 10 on the front end of the shielding case 40, make the holding part 45 of the shielding case 40 pop out from the receiving hole 16 of the shielding frame 10, and at the same time make the shielding frame 10 The elastic piece 14 clamps the two positioning portions 484 of the side wall 44 and the bottom wall 48 of the shielding case 40 respectively. Put the support frame 30 on the front end of the shielding case 40, make the stop portion 424 of the shielding case 40 abut against the support portion 34 of the support frame 30, and make the clamping portion 324 of the support frame 30 pinch the two side walls of the shielding case 40 44 and the shielding frame 10. At this time, the shielding frame 10, the shielding shell 40 and the support frame 30 are welded together at the welding portion 36 by spot welding. Then put the first conductor 20 on the outside of the shielding frame 10 and make the concave portion 22 of the first conductor 20 correspond to the tongue 482 of the shielding case 40, and paste one side of the first conductor 20 on the support frame 30. The support part 34, and the second conductor 50 is pasted to the rear end of the shielding shell 40 through the inner surface 52 of the second conductor 50 at the same time, so that the shielding frame 10, the shielding shell 40, the support frame 30, the first conductor 20 and the second conductor 50 are assembled into the shielding device 100 , and the pins 442 of the shielding shell 40 are installed on the circuit board 200 , and the shielding device 100 can be installed on the circuit board 200 . Then, the assembly of the shielding device 100 and the circuit board 200 is installed into the chassis front panel 300 .

Because the inner surface of the shield frame 10 is protrudingly provided with a plurality of elastic pieces 14, when the transceiver module is installed in the shield casing 40, the gap between the transceiver module and the inner wall of the shield casing 40 is covered by the elastic pieces 14 in the shield casing. The front opening of 40 is sealed. In this way, when in use, the electromagnetic waves generated by the transceiver module assembled in the shielding device 100 are not easy to leak from the front opening of the shielding case 40, and the electromagnetic waves generated by the electronic components outside the shielding device 100 will not leak from the shielding case 40. The front end opens into the shield case 40 .

Because the second conductor 50 is installed on the rear end of the shielding shell 40, the electromagnetic waves generated by the electrical connector and the transceiver module will not leak out due to the tiny gap between the shielding shell 40 and the circuit board when in use, and the shielding device Electromagnetic waves generated by other electronic components outside 100 are not likely to interfere with electrical connectors and transceiver modules.

Please refer to FIG. 5, because the conductive foam has good elasticity, when the shielding device 100 is installed on the front panel 300 of the case, there will be no gap between the shielding device 100 and the front panel 300, so that other electronic components outside the case The generated electromagnetic waves will not interfere with the electronic components inside the case, and at the same time, the electromagnetic waves generated by the electronic components inside the case will not interfere with the electronic components outside the case.

Because of the gap 128 , the shielding frame 10 has a certain degree of elasticity, so the shielding frame 10 can be easily fitted to the front end of the shielding case 40 .

Since the support frame 30 has an opening 328 , the support frame 30 can be easily opened to both sides, so that the support frame 30 can be easily fitted to the outside of the shielding case 40 and the shield frame 10 .

Claims (10)

1. A shielding device, comprising a shielding shell, a shielding frame, a support frame and a first conductor installed on the outside of the shielding frame, the shielding shell includes an outer surface, and the shielding frame is installed At the front end of the shielding shell, the support frame is installed on the front end of the shielding shell and against the shielding frame, characterized in that: The shielding shell includes a plurality of blocking parts and a plurality of positioning parts, and the blocking parts and the positioning parts protrude from the outer surface respectively; The shielding frame includes a body, a plurality of shrapnels and a plurality of receiving holes, the shrapnels respectively protrude from the inner surface of the body, and the accommodating holes pass through the body and accommodate the positioning part; The support frame includes a plurality of support parts and a support body, the support part is bent from the support body, the stop part is against one of the support parts, and the support part is used to support the first a conductor. 2. The shielding device according to claim 1, wherein the first conductor is conductive foam. 3. The shielding device according to claim 1, wherein the shielding case further comprises an inner surface opposite to the outer surface, and the stop portion and the positioning portion respectively extend from the inner surface to the inner surface. The outer surface is stamped. 4 . The shielding device according to claim 1 , wherein the supporting body comprises a connecting portion, a pair of pinching portions and a pair of contacting portions, and the pinching portion connects the connecting portion and the contacting portion. 5 . The shielding device according to claim 4 , wherein the support portion is formed by bending vertically from the inner surface to the outer surface of the connecting portion, the clamping portion and the contact portion respectively. 5 . 6 . The shielding device according to claim 5 , wherein the supporting frame further comprises a plurality of welding parts, and the welding parts are located between two adjacent supporting parts and at both ends of the contact part. 7. An electronic product, comprising a circuit board, a shielding device and a chassis, the described shielding device includes a front plate, the front end of the shielding device is installed on the front plate, and the shielding device includes a The shielding shell on the board, a shielding frame, a support frame and a first conductor installed on the outside of the shielding frame, the shielding shell includes an outer surface, and the shielding frame is installed on the shielding shell The front end of the support frame is installed on the front end of the shielding shell and against the shielding frame, which is characterized in that: The shielding shell includes a plurality of blocking parts and a plurality of positioning parts, and the blocking parts and the positioning parts protrude from the outer surface respectively; The shielding frame includes a body, a plurality of shrapnels and a plurality of receiving holes, the shrapnels respectively protrude from the inner surface of the body, and the accommodating holes pass through the body and accommodate the positioning part; The support frame includes a plurality of support parts and a support body, the support part is bent from the support body, the stop part is against one of the support parts, and the support part is used to support the first a conductor; The shielding device also includes a second conductor installed at the rear end of the shielding shell. 8 . The electronic product according to claim 7 , wherein the first conductor is conductive foam, which is pasted on the supporting part by sticking. 9. The electronic product according to claim 7, wherein the second conductor is elastic. 10. The electronic product according to claim 7, wherein the shielding case further comprises an inner surface opposite to the outer surface, and the stop portion and the positioning portion are separated from the inner surface respectively. Stamped to said outer surface.

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