TWI446866B - Electronic device with shield - Google Patents

Description

Electromagnetic shielding device

The present invention relates to a shielding device, and more particularly to an electromagnetic shielding device.

At present, with the development of electronic technology, electronic devices have become an indispensable tool for people's daily life, work and study. Usually, electronic devices such as televisions, computers, test equipment, etc. are equipped with a large number of electronic components. When the electronic device is in operation, the electronic components generate electromagnetic waves. This not only causes electromagnetic interference between the internal electronic components, but also affects the normal operation of the electronic device, and also radiates outward, causing harm to the human body. Therefore, how to shield electromagnetic waves generated by electronic components has become an urgent problem to be solved in the industry.

The electromagnetic shielding device commonly used in the industry is an integrally formed cover body having a top wall and side walls extending integrally from the periphery of the top wall. In use, the cover is placed on the electronic component to be shielded, and the sidewall is fixed to the circuit board on which the electronic component is disposed by soldering or the like.

However, in the actual production or repair process, when there is a problem with the electronic components, the engineer needs to un-deposit the electromagnetic shielding device and then remove the electronic components. The electromagnetic shielding device described above makes it inconvenient for the engineer to operate.

In view of this, it is necessary to provide an electromagnetic shielding device that is easy for an engineer to operate.

An electromagnetic shielding device for shielding electromagnetic waves, the electromagnetic shielding device comprises a supporting portion and a cover plate, wherein the supporting portion is a hollow frame body which is open at both ends surrounded by a plurality of sequentially connected side walls, and one of the plurality of side walls is provided The slit, the inner wall surface of the other side wall except the slit is provided with a sliding groove which is connected in sequence, and the sliding groove communicates with the slit, and the cover plate passes through the slit and slides into the sliding groove to block one end of the supporting portion. Opening.

Because the cover plate is inserted into the support portion from the gap on the side wall, when the electronic component on the circuit board has a problem, the engineer can pull the cover plate out of the support portion, and the engineering personnel can view it, thereby facilitating engineering. Personnel operations.

100‧‧‧Electromagnetic shielding device

110‧‧‧ cover

111‧‧‧ first edge

112‧‧‧ second edge

113‧‧‧Handles

115‧‧‧Perforation

120‧‧‧Support

121‧‧‧First side wall

122‧‧‧second side wall

123‧‧‧ third side wall

124‧‧‧fourth sidewall

126‧‧‧ gap

127‧‧‧through hole

128‧‧‧ inner wall

129‧‧ ‧ chute

130‧‧‧Fixed parts

30‧‧‧ boards

31‧‧‧Electronic components

1 is an exploded view of an electromagnetic shielding device of a preferred embodiment.

2 is a perspective view of the electromagnetic shielding device of FIG. 1.

Figure 3 is a schematic view showing the state of use of the electromagnetic shielding device.

As shown in FIG. 1, an exploded view of an electromagnetic shielding device 100 of a preferred embodiment. The electromagnetic shielding device 100 includes a support portion 120, a cover plate 110 mountable on the support portion 120, and a fixing member 130 for fixing the cover plate 110 to the side wall. Among them, the support portion 120 and the cover plate 110 are composed of a material having good electromagnetic shielding performance and heat dissipation performance.

The cover plate 110 is a rectangular flat plate including a first edge 111 and a second edge 112 opposite the first edge 111. The first edge 111 protrudes from a handle 113 for easy grip, and the handle 113 is a bump. The first edge 111 is further provided with a plurality of through holes 115 extending perpendicularly through the cover plate 110, and the through holes 115 are provided with internal threads. In the present embodiment, the number of the perforations 115 is two.

The support portion 120 is a hollow frame that is open at both ends surrounded by a plurality of sequentially connected side walls. The support portion 120 includes a first sidewall 121, a second sidewall 122, a third sidewall 123, and a fourth sidewall 124, and the first sidewall 121 is connected to the fourth sidewall 124 such that the first sidewall 121 and the second sidewall 122 are The third side wall 123 and the fourth side wall 124 enclose a hollow frame that is open at both ends. The first side wall 121 defines an elongated slit 126, and the cover plate 110 can slide in the slit 126. The first side wall 121 is further provided with a plurality of through holes 127 having the same number as the through holes 115, and the positions of the through holes 127 are in one-to-one correspondence with the positions of the through holes 115. A sliding groove 129 is formed in each of the inner wall surface 128 of the second side wall 122, the third side wall 123 and the fourth side wall 124. The chute 129 is also in communication with the slot 126.

The fixing member 130 may be an element such as a screw or a bolt.

When assembling, first, the cover plate 110 is inserted into the slot 129 and then slides into the sliding slot 129, so that the cover 110 closes one end of the support portion 120. At this time, the two through holes 115 and the two through holes 127 are respectively opposed to each other. The edge 111 is located in the slit 126; then, the fixing member 130 is passed through the through hole 127 and screwed into the through hole 115, so that the cover plate 110 is fixed on the support portion 120, and the assembly is completed (as shown in FIG. 2).

As shown in FIG. 3, the circuit board 30 is provided with an electronic component 31. In use, the unobstructed end of the support portion 120 is fixed on the circuit board 30, and the electronic component 31 is buckled in 120 and passed through. The electromagnetic shielding device 100 is fixed to the circuit board 30 by soldering, bonding, screwing, or the like to shield the electromagnetic wave emitted from the electronic component 31 to other peripherals in addition to the normal transmission and reception of electromagnetic waves.

Since the cover plate 110 is fixed to the support portion 120 by the fixing member 130, the one end of the support portion 120 away from the circuit board 30 is closed. Therefore, if there is a problem in the electronic component 31 during actual production or repair, the engineer can directly remove the fixing member 130, and then hold the handle 113, applying a force to make the cover plate 110 from the chute. The 129 is pulled out and separated from the support portion 120 from the slit 126, and the engineer can view it for the engineering personnel to operate. Therefore, in the prior art, it is necessary to first remove the electromagnetic shielding device and then remove the electronic component 31 to view the inconvenience caused by the electronic component 31, and at the same time, prevent the electronic component on the circuit board 30 from being damaged during the soldering. In addition, since the first edge 111 of the cover 110 is fixed in the slit 126, it is also possible to prevent the cover 110 from being warped and deformed.

110‧‧‧ cover

111‧‧‧ first edge

113‧‧‧Handles

120‧‧‧Support

130‧‧‧Fixed parts

30‧‧‧ boards

31‧‧‧Electronic components

Claims (5)

An electromagnetic shielding device for shielding electromagnetic waves, wherein the electromagnetic shielding device comprises a supporting portion and a cover plate, wherein the supporting portion is a hollow frame body which is open at both ends surrounded by a plurality of sequentially connected side walls, One of the plurality of side walls is provided with a slit, and the inner wall surface of the other side wall except the slit is provided with a sliding groove that is sequentially connected, and the sliding groove is in communication with the slit, and the cover plate passes through the slit and slides Entering into the chute to block the opening at one end of the support portion. The electromagnetic shielding device of claim 1, wherein the support portion includes a first side wall, a second side wall, a third side wall, and a fourth side wall, wherein the slit is disposed on the first side wall, The chute is disposed on inner surfaces of the second side wall, the third side wall, and the fourth side wall. The electromagnetic shielding device of claim 1, wherein the electromagnetic shielding device further comprises a fixing member, the cover plate is provided with a perforation corresponding to the slit, and the supporting portion is provided with the slit The through hole, the fixing member is configured to be fixed in the through hole after passing through the through hole to fix the cover plate. The electromagnetic shielding device of claim 1, wherein the edge of the cover plate located in the slit is provided with a handle for easy grip. The electromagnetic shielding device of claim 4, wherein the handle is a projection projecting from the edge.