TWI608790B - Electromagnetic protective cover, digital decoding device slot assembly and digital decoding device assembly - Google Patents

Description

Electromagnetic protective cover, digital decoding device card slot combination and digital decoding device combination

The present invention relates to an outer cover, a card slot combination, and a device combination, and more particularly to an electromagnetic protection cover, a digital decoding device card slot combination, and a digital decoding device combination.

With the large number of applications of electrical and electronic equipment, electromagnetic waves are flooding our lives. Electromagnetic waves are a potential source of interference for electronic devices. Electromagnetic interference is an electromagnetic phenomenon, and the electromagnetic field is accompanied by the action of voltage or current, which can degrade the performance of electronic devices, electronic devices or electronic systems.

TV channels received by general television (TV) and digital video converters (STBs) are differentiated into paid and non-paid channels according to demand, so carriers usually use the code provided for the paid channels on the provided signals. The lock code function is cancelled by the device installed at the user end and the external decoder card to decode. Therefore, a general digital channel receiving device, such as a television and a digital video converter, has a cable slot designed to meet this requirement, and the user can use the card after purchasing the decoding card.

Currently, the device installed at the user end needs to be inserted by an external decoder card to operate. Usually, the signal line connected to the external decoder card is directly connected to the main circuit in the device, and if there is external interference after the external decoder card is inserted (such as Electromagnetic interference) directly affects the main circuit. Therefore, when there is a problem, not only the signal is degraded, but also the function is abnormal (such as shutdown, screen pause, machine restart, etc.).

The invention provides an electromagnetic protective cover capable of improving the shielding effect of metal.

The invention provides a digital decoding device card slot combination with improved metal shielding effect.

The present invention provides a digital decoding device combination having good metal shielding effect and electromagnetic resistance.

The electromagnetic protective cover of the present invention is suitable for interspersing with a digital decoding device card slot, wherein the digital decoding device card slot comprises a slot body and a plurality of pin headers, and the electromagnetic shielding cover has a cover body portion, a needle covering portion and a grounding unit. The cover body portion is adapted to cover the groove body. The needle covering portion is coupled to the first side of the cover body portion, adapted to cover the junction of the pin header and the outer member and more in contact with the outer member, and the ground portion extends downwardly from the second side of the cap body portion and is bent.

A digital decoding device card slot combination includes a digital decoding device card slot and the electromagnetic shielding cover described above. The digital decoding device card slot includes a slot body and a pin header embedded in the slot body, and the electromagnetic shielding cover covers the digital decoding device card slot.

A digital decoding device combination for external components to be placed, including a motherboard, the above-described digital decoding device card slot combination, and external components. The motherboard has a conductive portion, the digital decoding device card slot is disposed on the motherboard near the conductive portion, and the external component can be inserted into the slot body of the digital decoding device card slot and electrically connected with the pin header, and the electromagnetic protective cover is covered Digital decoding device card slot.

In an embodiment of the invention, the needle covering portion has a plurality of recessed regions, and the recessed regions are recessed from the top surface of the needle portion.

In an embodiment of the invention, the coverage of the needle-covered portion is greater than the area occupied by the needle.

In an embodiment of the present invention, the electromagnetic shielding outer cover further has a locking portion located on the third side and the fourth side of the cover body portion, wherein the third side and the fourth side are different from the first side and the first side The opposite sides of the two sides, and the digital decoding device card slot combination further comprises a lock attachment, and the locking portion and the digital decoding device card slot are locked together via the lock attachment.

In an embodiment of the invention, the electromagnetic shielding outer cover further has an abutting portion extending from the first side of the cover body portion on opposite sides of the needle covering portion, and the abutting portion is adapted to decode against the digital position Device card slot. Furthermore, the abutment may have an extension that extends towards each other and an extension that projects to fit the portion of the digital decoder card slot. Moreover, the coverage of the needle covering portion is larger than the area occupied by the needle.

Based on the above, the electromagnetic shielding cover of the present invention is covered on the digital decoding device card slot, and the electromagnetic interference (EMI) and electromagnetic resistance (EMS) problems of the digital decoding device combination can be improved.

The above described features and advantages of the invention will be apparent from the following description.

1 is a combination diagram of a combination of digital decoding devices, and FIG. 2 is an exploded view of a combination of digital decoding devices of FIG. 1. Referring to FIG. 1 and FIG. 2 simultaneously, the digital decoding device combination 100 suitable for the external component 130 to be placed includes a motherboard 110, a digital decoding device card slot 120 and an electromagnetic shielding cover 140. The digital decoding device card slot 120 is disposed on the motherboard 110, and the digital decoding device card slot 120 includes a slot body 122 and a header pin 124 embedded in the slot body 122. The slot body 122 may be made of an insulating material or insulated. The combination of the material and the metal member, wherein the groove body 122 of the present embodiment is made of a combination of an insulating material and a metal member; the external component 130 is inserted into the groove body 122 and electrically connected with the pin header 124; electromagnetic protection The outer cover 140 has a cover body portion 142, a needle covering portion 144 and a grounding portion 146. The cover body portion 142 covers the slot body 122, the needle covering portion 144 is connected to the first side 142a of the cover body portion 142, and the grounding portion 146 is self-covered. The second side 142b of the body portion 142 extends downwardly and is bent to contact the conductive portion 112 of the motherboard 110. The first side 142a and the second side 142b are opposite sides along the X direction.

The aforementioned digital decoding device card slot 120 can be fixedly disposed on the motherboard 110 adjacent to the conductive portion 112 (for example, the digital decoding device card slot 120 has pins (not shown), and is shown on the motherboard 110 in FIG. The socket card is inserted into the hole, or the adapter card or the adapter card slot may be disposed on the motherboard 110 for assembly by a digital decoding device card slot 120 (not shown); the digital decoding device card slot 120 is configured to be externally connected, for example. The external component 130 of the decoding card is such that the shape of the digital decoding device card slot 120 is substantially U-shaped, and the shape of the electromagnetic shielding cover 140 is substantially the same as the shape of the digital decoding device card slot 120, so when the digital decoding device is slotted When the electromagnetic shielding cover 140 is disassembled and placed on a flat surface, the shape of the digital decoding device card slot 120 and the electromagnetic shielding outer cover 140 are U-shaped in plan view.

In the above, the needle covering portion 144 of the electromagnetic shielding outer cover 140 may have a plurality of recessed regions 1442, and the recessed portion 1442 is recessed from the top surface (not labeled) of the needle portion 144 to facilitate the external component 130 and the digital decoding device card slot. The fit between the 120s is more stable. It should be noted that the recessed region 1442 may further contact the metal casing of the external component 130 as a ground, wherein the recessed region 1442 can provide a function similar to the shrapnel to achieve a buffering external force to protect the external component 130, or prevent the external component 130 from the digital decoding device. The size of the card slot 120 does not match and the external component 130 cannot be inserted into the slot body 122 of the digital decoding device card slot 120.

In particular, the coverage of the needle-covered portion 144 is greater than the area occupied by the header 124; that is, the needle-covering portion 144 completely covers the upper portion of the header 124, and the needle-covering portion 144 further covers the header 124 and the external member 130. The joint portion, therefore, when the digital decoding device assembly 100 is in operation, the needle covering portion 144 can prevent electrical signal leakage at the junction of the pin header 124 and the external component 130, and can also prevent external electromagnetic waves from affecting signal transmission.

The aforementioned electromagnetic shielding cover 140 can be combined with the digital decoding device card slot 120 to form a digital decoding device card slot combination 150.

The electromagnetic shielding outer cover 140 further has a locking portion 148 located at the third side 142c and the fourth side 142d of the cover body portion 142, wherein the third side 142c and the fourth side 142d are along the Y direction and different from the first The opposite sides of the side 142a and the second side 142b, and the digital decoding device card slot assembly 150 further includes a lock attachment 152 that is locked with the digital decoding device card slot 120 via the lock attachment 152. In the present embodiment, the locking portion 148 is an opening, and the locking attachment 152 is a screw, and the screw is further locked into the slot body 122 of the digital decoding device card slot 120 via the opening. In another embodiment, the digital decoding device card slot 120 may also be formed at the corresponding locking portion 148 with a structure for locking the locking attachment 152, such as a recess.

In order to fit the electromagnetic shielding outer cover 140 and the digital decoding device card slot 120 better together, the electromagnetic shielding outer cover 140 further has two opposite sides of the cover body portion 142 extending from the first side 142a of the cover body portion 142. The abutting portion 149 of the side, and the shape of the abutting portion 149 is L-shaped in cross section, so that the abutting portion 149 can conform to the two brackets 126 of the digital decoding device card slot 120 to abut each other.

In addition, by contacting the conductive portion 112 of the motherboard 110 by the abutting portion 149, the digital decoding device combination 100 can have a better grounding effect, and the details will be described in detail below.

Please refer to FIG. 1 and FIG. 2 in general. In order to facilitate the operation of the operator of the telecommunications provider, the digital decoding device card slot 120 and the electromagnetic shielding cover 140 can be combined into a digital decoding device. The card slot assembly 150 is fixed to the motherboard 110. In detail, the digital decoding device card slot 120 may be fixed to the motherboard 110 via the DIP method, or the adapter card slot for inserting the digital decoding device card slot 120 may be disposed on the motherboard 110. The electromagnetic shielding cover 140 is directly placed on the digital decoding device card slot 120. Therefore, the cover body portion 142 covers the slot body 122, the needle covering portion 144 covers the pin header 124, and the abutting portion 149 abuts against the bracket 126. The lock attachment 152 passes through the latch portion 148 and is locked into the slot body 122 of the digital decoding device card slot 120, so that the digital decoding device card slot 120 and the electromagnetic shielding cover 140 are fixed to each other. At this time, by making the coverage of the needle covering portion 144 larger than the area occupied by the hairpin 124, the needle covering portion 144 can completely cover the hairpin 124. In addition, the grounding portion 146 extending downward from the second side 142b of the cover body portion 142 may contact the conductive portion 112 on the motherboard 110, and may be electrically conductive with the motherboard 110 because the front end of the ground portion 146 is bent. The portion 112 is in contact with the surface.

Under this architecture, when an external component 130, such as a decode card, is inserted into the digital decoding device card slot 120, the pads of the external component 130 are in contact with the header pins 124 thereby achieving an electrical connection.

In particular, since the coverage of the needle covering portion 144 is larger than the area occupied by the needle pin 124, the needle covering portion 144 not only completely covers the pin header 124 to prevent leakage of the electrical signal, but also the needle covering portion 144 covers the pin header 124. The junction with the external component 130 thus prevents external electromagnetic waves from affecting signal transmission, allowing the digital decoding device combination 100 to maintain good functionality.

In addition, since the grounding portion 146 of the electromagnetic shielding outer cover 140 is further in contact with the conductive portion 112 of the main board 110, the electromagnetic can be vented through the main board 110 to prevent electromagnetic accumulation in a specific place, and the electromagnetic resistance of the digital decoding device assembly 100 is improved. Degree of acceptance.

Table 1 is a comparison of the combination of the digital decoding device combination 100 of Figs. 1 and 2 and a conventional digital decoding device.         <TABLE border="1" borderColor="#000000" width="85%"><TBODY><tr><td> </td><td> A combination of conventional digital decoding devices</td><td> The digital decoding device combination of the present embodiment</td><td> the improvement result</td></tr><tr><td> 485.90MHz </td><td> exceeds 4.08dB </td><td> Below 14.81dB </td><td> 18.89 dB </td></tr><tr><td> 513.06MHz </td><td> More than 4.67dB </td><td> Below 9.35dB </td><td> 14.20 dB </td></tr><tr><td> 542.16MHz </td><td> over 6.83dB </td><td> below 2.73dB </td> <td> 9.56 dB </td></tr><tr><td> 864.2MHz </td><td> More than 4.34dB </td><td> Less than 7.54dB </td><td> 11.88 dB </td></tr><tr><td> 72.84MHz </td><td> exceeds 2.16dB </td><td> is less than 2.59dB </td><td> 4.75 dB </td ></tr></TBODY></TABLE> Table 1       

Table 1 shows the test results in accordance with EN55022 / EN55013 / EN301489-1-17, with a 743 chamber simulation of 10m chamber. It can be known from Table 1 that, under the same frequency, the conventional digital decoding device combination has a good improvement effect with the digital decoding device combination 100 of the present embodiment, wherein the electromagnetic shielding cover 140 can effectively suppress the external portion. The radiation emission caused by the combination of the component 130 and the digital decoding device 100 itself can be prevented from affecting other electronic products, and can also meet the requirements of EMC specifications, and meets the sales standards required by the government. The electromagnetic shielding cover 140 can also increase the metal shielding protection effect on the electrical connection between the external component 130 and the digital decoding device card slot 120 and the grounding portion, thereby effectively reducing the digital electromagnetic interference and the digital caused by the static electricity. The possibility of damage of the decoding device combination 100 is improved, and electromagnetic resistance (EMS) protection is enhanced.

3 is a schematic illustration of another embodiment of an electromagnetic protective cover. In the embodiment of FIG. 3, the abutment portion 149 of the electromagnetic shielding outer cover 140 may further have an extended protrusion 1491 extending toward each other, and having a sectional shape of the abutting portion 149 at the extended protrusion 1491 along the YZ plane. In the shape of a trough-shaped groove, the extension protrusion 1491 can serve as a guiding groove, and the digital decoding device card slot can be assembled with the electromagnetic shielding outer cover 140 by means of the extension protrusion 1491, thus the digital decoding device card The bracket 126 of the slot 120 is received in the serpentine slot and received on the extension projection 1491. Incidentally, the locking portion 148 may be disposed separately from the extension protrusion 1491, or may be disposed together, and designed according to actual needs.

The assembly and use of the digital decoding device combination 100 are described above, and thus will not be described herein.

In summary, the electromagnetic protective cover of the present invention can completely improve the use of the electromagnetic field because the needle covering portion can completely cover the grounding portion of the digital decoding device card slot and the electrical connection between the digital decoding device card slot and the external component. The problem of electromagnetic interference (EMI) in the combination of the digital decoding device card slot combination and the digital decoding device of the protective cover. Furthermore, the electromagnetic shielding cover has a ground portion extending downward from the first side of the cover body portion and bent to contact the conductive portion of the motherboard, so electromagnetic interference outside the card slot combination of the digital decoding device can be electromagnetically protected thereby The grounding of the outer cover is further transmitted to the conductive portion and then vented, thereby improving the electromagnetic resistance (EMS) degree of the digital decoding device card slot combination and the digital decoding device combination using the electromagnetic shielding outer cover.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.

100‧‧‧Digital decoding device combination

110‧‧‧ motherboard

112‧‧‧Electrical Department

120‧‧‧Digital decoding device card slot

122‧‧‧ slot body

124‧‧‧ pin header

126‧‧‧ bracket

130‧‧‧External components

140‧‧‧Electromagnetic protective cover

142‧‧‧ Cover body

142a‧‧‧ first side

142b‧‧‧ second side

142c‧‧‧ third side

142d‧‧‧ fourth side

144‧‧‧Needle

1442‧‧‧ recessed area

146‧‧‧ Grounding Department

148‧‧‧Locking Department

149‧‧‧Affiliation

1491‧‧‧Extended

150‧‧‧Digital decoding device card slot combination

152‧‧‧Lock attachment

1 is a combination diagram of a combination of digital decoding devices. 2 is an exploded view of the combination of the digital decoding device of FIG. 1. 3 is a schematic illustration of another embodiment of an electromagnetic protective cover.

100‧‧‧Digital decoding device combination

110‧‧‧ motherboard

112‧‧‧Electrical Department

120‧‧‧Digital decoding device card slot

122‧‧‧ slot body

124‧‧‧ pin header

126‧‧‧ bracket

130‧‧‧External components

140‧‧‧Electromagnetic protective cover

142‧‧‧ Cover body

142a‧‧‧ first side

142b‧‧‧ second side

142c‧‧‧ third side

142d‧‧‧ fourth side

144‧‧‧Needle

1442‧‧‧ recessed area

146‧‧‧ Grounding Department

148‧‧‧Locking Department

149‧‧‧Affiliation

150‧‧‧Digital decoding device card slot combination

152‧‧‧Lock attachment

Claims (14)

An electromagnetic shielding cover adapted to be engaged with a digital decoding device card slot, wherein the digital decoding device card slot comprises a slot body and a plurality of pin headers, and the electromagnetic shielding cover has: a cover body portion adapted to cover a groove body; a needle portion connected to the first side of the cover body portion, adapted to cover the joint of the pin header and the outer member and more in contact with the outer member, wherein the needle portion has a plurality of depressions a recessed area from the top surface of the overlying portion, the plurality of recessed regions contacting the metal outer casing of the outer component to facilitate embedding of the outer component with the digital decoding device card slot And a grounding portion extending downward from the second side of the cover body portion and bent. The electromagnetic shielding outer cover according to claim 1, further comprising a locking portion on the third side and the fourth side of the cover body portion, wherein the third side and the fourth side are different On the opposite sides of the first side and the second side, the locking portion is adapted to be latched with the digital decoding device. The electromagnetic protective cover according to claim 1, further comprising an abutting portion extending from a first side of the cover body portion on opposite sides of the needle covering portion, and the abutting portion Suitable for abutting against the digital decoding device card slot. The electromagnetic shielding outer cover according to claim 3, wherein the abutting portion has an extending protrusion extending toward each other, and the extending protrusion is adapted to receive a portion of the digital decoding device card slot. A digital decoding device card slot combination includes: a digital decoding device card slot comprising: a slot body and a pin header embedded in the slot body; and an electromagnetic shielding cover covering the digital decoding device card slot, the electromagnetic shielding cover having a cover body portion and a needle covering portion And a grounding portion, wherein the cover body portion covers the groove body, the needle covering portion is coupled to the first side of the cover body portion, and covers the joint of the pin header and the external component and is more in contact with the An outer member, wherein the needle covering portion has a plurality of recessed regions, and the recessed regions are recessed from a top surface of the needle covering portion, the plurality of recessed regions contacting a metal outer casing of the outer member, contributing to The mounting stability of the external component and the digital decoding device card slot is extended, and the grounding portion extends downward from the second side of the cover body portion and is bent. The digital decoding device card slot assembly of claim 5, wherein the coverage of the needle covering portion is greater than the area occupied by the pin header. The digital decoding device card slot assembly of claim 5, wherein the electromagnetic shielding cover further has a locking portion on the third side and the fourth side of the cover body portion, wherein the third The side and the fourth side are opposite sides of the first side and the second side, and the digital decoding device card slot combination further includes a lock attachment, the lock portion and the digital decoding The device card slots are locked together via the lock attachment. The digital decoding device card slot assembly of claim 5, wherein the electromagnetic shielding outer cover further has an abutting portion extending from a first side of the cover body portion at a relative position of the needle covering portion Both sides, and the abutting portion abuts against the digital decoding device card slot. The digital decoding device card slot assembly of claim 8, wherein the abutting portion has an extended protrusion extending toward each other, and the extending protrusion receives a portion of the digital decoding device card slot. A digital decoding device combination for external component placement, the digital decoding device combination comprising: a motherboard having a conductive portion; a digital decoding device card slot disposed adjacent to the conductive portion on the motherboard The digital decoding device card slot includes a slot body and a pin header embedded in the slot body, wherein the external component can be inserted into the slot body and electrically connected to the pin header; and an electromagnetic protective cover, The cover body portion, the needle covering portion and the grounding portion, wherein the cover body portion covers the groove body, the needle covering portion is coupled to the first side of the cover body portion and covers the pin header and the outer portion a joint of the element and more in contact with the outer element, wherein the needle portion has a plurality of recessed regions, and the recessed region is recessed from a top surface of the needle covering portion, the plurality of recessed regions contacting the outer portion a metal casing of the component, which contributes to the fitting stability of the external component to the digital decoding device card slot, and the grounding portion extends downward from the second side of the cover body portion and is bent to contact the Motherboard The conductive portion, the first side and the second side opposite sides. The digital decoding device combination of claim 10, wherein the covering portion of the needle covering portion is larger than an area occupied by the pin header. The digital decoding device assembly of claim 10, wherein the electromagnetic shielding cover further has a locking portion on the third side and the fourth side of the cover body portion, wherein the third side The fourth side is different from the opposite sides of the first side and the second side, and the digital decoding device card slot combination further includes a lock attachment, the lock portion and the digital decoding device card The slots are locked together via the lock attachment. The digital decoding device assembly of claim 10, wherein the electromagnetic shielding cover further has an abutting portion extending from a first side of the cover body portion on opposite sides of the needle covering portion And the abutting portion is adapted to abut the digital decoding device card slot. The digital decoding device combination of claim 13, wherein the abutting portion has an extending protrusion extending toward each other, and the extending protrusion is a portion of the digital decoding device card slot.