Shielding apparatus

Mask device

SHIELDING APPARATUS

The present invention relates to a mask device, and more particularly to a separate mask device.

Electromagnetic interference is one of the common problems in electronic equipment. Usually, the circuit generates electromagnetic waves in the application, which affects the signal transmission and working performance of other electronic devices. In order to reduce the degree of such interference, a cover made of a conductive material may be disposed around the electronic device. The cover can eliminate static electricity accumulation and absorb electromagnetic fields, so that electromagnetic shielding can be realized. Related art can be found in U.S. Patent Nos. 5,400,949, 5,365,410 and 5,742,488. However, the conventional masking devices are usually integrally soldered to the circuit board. If the electronic components covered by the masking device need to be replaced or repaired, the melting operation is required to remove the masking device. It is cumbersome and not convenient for operation.

In order to solve the foregoing problems, the mask device is also divided into two separate components. The related patent can be referred to the Chinese Patent No. CN 2514579Y published on October 2, 2002, the mask device of the electronic device disclosed in the patent includes the following frame. And an upper cover, the lower frame is disposed on the circuit board to frame the electronic device to be shielded, the lower frame includes a plurality of side walls, and the side wall is provided with a plurality of through holes, the upper cover includes a top plate and a vertical vertically disposed from a peripheral side of the top plate And a plurality of protrusions are disposed on the tab. When the upper cover is assembled to the lower frame, the through holes of the lower frame and the protrusions at corresponding positions on the upper cover tab are engaged with each other to hold the upper cover to the lower frame. However, the upper cover tab is only disposed on one side of the lower frame, so that the upper cover and the lower frame need to be tightly matched to meet the requirements of stable and reliable assembly, which is not conducive to disassembly, and the gap is reduced at the corner around the mask device. The electromagnetic mask effect also has a negative impact on the user's health.

Therefore, it is necessary to improve the masking device of the conventional electronic device to overcome the aforementioned drawbacks in the prior art.

The purpose of this creation is to provide a masking device for an electronic device that is easy to disassemble and install.

In order to achieve the above object, the present mask device includes a cover body and a bracket for supporting the cover body. The cover body is provided with a top plate and a clamping mechanism extending downward from the top plate, and the clamping mechanism is configured to be clamped to the bracket. a first clamping portion and a second clamping portion on opposite sides.

Compared with the prior art, the present mask device has the following effects: the first and second clamping portions of the clamping mechanism cooperate with the bracket to make the cover assembly reliable and easy to disassemble.

The first picture is a three-dimensional combination of the mask device of the present creation.

The second figure is an exploded perspective view of the masking device shown in the first figure.

The third figure is a perspective assembled view of another angle of the mask device shown in the first figure.

The fourth figure is an exploded perspective view of the mask device shown in the third figure.

Figure 5 is a partial cross-sectional view of the mask device shown in the third figure along the V-V direction.

The sixth figure is a perspective view of the mask device of the present creation.

The present invention will be further described below in conjunction with the drawings and embodiments. Referring to FIG. 1 , FIG. 3 and FIG. 6 , the mask device 100 of the electronic device (not shown) includes a cover 1 and a bracket mounted on the circuit board 3 for supporting the cover 1 . 2, wherein the cover body 1 and the bracket 2 are made of a metal material, and when the bracket 2 does not need to be welded, stainless steel, aluminum or the like may be selected. When the bracket 2 needs to be welded, a copper alloy material may be selected to make the bracket 2 Soldering on the circuit board 3, of course, the stainless steel plating can be used to weld the plating layer to make the bracket 2 have a welding function.

The cover body 1 includes a top plate 10 and a clamping mechanism 14 and a side wall 13 extending perpendicularly from a side edge of the top plate 10. The top plate 10 of the cover body 1 is provided with a plurality of circular holes 101 to ensure the mask device 100 is in SMT (surface-mount technology) The soldering process achieves a good heat dissipation effect, and also has a good dissipation effect on the heat generated by the electronic device (not shown) in the subsequent use. The top plate 10 of the cover 1 has a center of gravity area 102 which is not subjected to a punching process to facilitate suction of the nozzle during automatic welding.

In order to facilitate the description of the specific embodiment, the direction biased toward the center of the cover 1 is defined as "inner", and the direction biased toward the periphery of the cover 1 is defined as "outer", and the cover 1 is fastened to the circuit board 3. The direction is defined as "lower", and the direction in which the cover 1 is detached from the board 3 is defined as "up".

Referring to the second and fourth figures, the clamping mechanism 14 is provided with a first clamping portion 11 and a second clamping portion 12 respectively clamped on the inner and outer sides of the bracket 2, the first clamping portion 11 and The second clamping portions 12 are all elastic, thereby satisfying the need for the inspection abnormality or the electronic device (not shown) to facilitate the disassembly inspection of the cover 1 and the re-fastening of the cover 1 after the work is completed. The cooperation of the first clamping portion 11 and the second clamping portion 12 of the clamping mechanism 14 with the bracket 2 makes the cover 1 easy to assemble while being assembled reliably, and the clamping mechanism 14 is disposed on the cover 1 to facilitate the support. The structural design of 2 tends to be simplified, thereby facilitating the improvement of the service life of the bracket 2, further avoiding the complicated operation of detaching, replacing or repairing the bracket 2 from the circuit board 3; The design of the bracket 2 is more flexible. For example, the bracket 2 can be designed in the form of a sheet or a strip, so that the electronic devices (not shown) on the circuit board 3 are arranged closely, which is advantageous for the shaping. . In the present embodiment, the bracket 2 is in the form of a strip, and is provided with a welding surface 21. The welding surface 21 is provided with upper and lower concave and convex portions, which facilitates the integration of more solder (not shown) during the welding process.

Referring to the second and fourth figures, the first clamping portion 11 is biased toward the center of the cover 1 , and the second clamping portion 12 is biased around the cover 1 , that is, the first clamping portion 11 and the second portion. The clamping portion 12 is staggered along the inner and outer directions perpendicular to the side edge of the top plate 10; further, the first clamping portion 11 and the second clamping portion 12 are staggered along the extending direction of the side edge of the top plate 10 of the cover 1, which is staggered herein. Including two cases of partial overlap and no overlap at all, thereby facilitating the fastening effect of the bracket 2 on the first clamping portion 11 and the second clamping portion 12, so that the combination of the bracket 2 and the cover body 1 is more stable and reliable. In the present embodiment, the first clamping portion 11 and the second clamping portion 12 are completely offset, that is, spaced apart, in the inner and outer directions perpendicular to the side edges of the top plate 10, whereby the manufacturing process is simple and the productivity is improved. The specific structure is as follows: the first clamping portion 11, the second clamping portion 12, and the side wall 13 of the cover 1 are respectively formed by a flat substrate (not shown) along the first fold line 111 and the second fold line provided in the surrounding area thereof. 121. The third fold line 131 is formed by punching and bending downward and vertically oriented, and the first clamping portion 11 or the second clamping portion 12 or any adjacent one of the side walls 13 is stamped to form a process groove to facilitate the foregoing. Bending operation. The second and third fold lines 121 and 131 are opposite to the first fold line 111, and the third fold line 131 is substantially flush with the second fold line 121. Accordingly, the side wall 13 is substantially flush with the second clamp portion 12. And is disposed outside with respect to the first clamping portion 11.

In this embodiment, the side wall 13 is disposed adjacent to the clamping mechanism 14 and spaced apart along the extending direction of the side edge of the top plate 10, and the longitudinal ends of the side wall 13 are respectively adjacent to the first clamping portion 11, and the side wall 13 abuts The inward clamping force is applied to the outside of the bracket 2 and the bracket 2 is such that the action of the side wall 13 on the bracket 2 is substantially the same as the effect of the second clamping portion 12 on the bracket 2.

Further, the first clamping portion 11 and the second clamping portion 12 are each provided with a groove 22 or a circular protrusion 141, and the bracket 2 abuts the portions of the first clamping portion 11 and the second clamping portion 12 Correspondingly, the circular bumps 141 or the grooves 22 are provided, so that the first clamping portion 11 and the second clamping portion 12 are fixed to each other by the grooves 22 and the circular bumps 141. Among them, the design of the circular bump 141 allows the cover 1 to be engaged and disassembled with a circular arc transition, thereby facilitating the operation. In the embodiment, the recesses 22 are provided as circular through holes, and the first clamping portion 11 and the second clamping portion 12 are respectively provided with circular bumps 141 protruding outward and inward, and the bracket 2 is disposed through. Circular through holes on opposite sides are engaged with the aforementioned circular bumps 141.

Referring to the third and fifth figures, in the embodiment, there is a gap 4 between the first clamping portion 11 and the second clamping portion 12 and the bracket 2, so that the assembly of the cover 1 and the bracket 2 is firm and reliable. It is also easy to disassemble.

Referring to the first and second figures, in the present embodiment, the mask device 100 is provided with a plurality of side walls 13 , a plurality of clamping mechanisms 14 and a plurality of brackets 2 mated with the clamping mechanism 14 . Thereby, on the one hand, the cover body 1 can be fixed by the local configuration bracket 2, and the detachable function is obtained, thereby reducing the amount of consumables of the bracket 2; on the other hand, the detachable mechanism of the clamping mechanism 14 and the bracket 2 is detachable. The structure is stable and reliable, and the manufacturing is simple, and the bracket 2 can be set to different shapes according to actual needs and configured with different numbers to apply different positions of the cover body 1, so that the design application of the mask device 100 has strong flexibility.

The bracket 2 is provided with two clamping edges 23 to form an angle for assembling at a corner around the cover body 1, and both the clamping edges 23 are clamped in the at least one clamping mechanism 14. The bracket 2 is disposed at the corner of the cover body 1 on the one hand to eliminate the gap 103 at the corner of the cover body 1 to enhance the masking effect of the mask device 100 and reduce the harm of electromagnetic radiation to the user. The fastening of the first clamping portion 11 and the second clamping portion 12 around the cover 1 to prevent the collapse of the outer cover causes the cover 1 to be detached from the circuit board 3 or the cover effect is lost.

Since the cover 1 is square and has four corners of 90 degrees, the cover 1 is provided with four brackets 2 having an angle of 90 degrees to cooperate with the four clamping mechanisms 14 provided at the corners of the cover 1.

Referring to the third and fourth figures, the lower edge of the first clamping portion 11 of the cover 1 and the lower edge of the side wall 13 and the second clamping portion 12 are respectively bent inwardly and outwardly to form a guiding surface. It is advantageous for the guiding bracket 2 to be pressed into the clamping mechanism 14 to make the assembly smooth, and on the other hand, to help avoid the first clamping portion 11, the second clamping portion 12 and the side wall when the solder (not shown) is excessive. 13 interferes with solder (not shown).

Referring to the first figure and the second figure, in the assembly, firstly, under the guidance of the first clamping portion 11, the second clamping portion 12 and the lower edge of the side wall 13, the bracket 2 is pressed into the cover body 1 from bottom to top. The clamping mechanism 14 and the first clamping portion 11 and the second clamping portion 12 of the clamping mechanism 14 are opened away from the bracket 2 and pressed against opposite sides of the bracket 2, and the first clamping portion 11 And the circular protrusion 141 of the second clamping portion 12 smoothly slides into the circular through hole of the bracket 2 by the arc transition to be engaged and positioned, and secondly, the unpunched center of gravity on the top plate 10 of the cover 1 is sucked by the suction device. The region 102 performs an automatic SMT soldering operation on the cover 1 in which the bracket 2 is assembled, so that the uneven surface of the bracket 2 is positioned at a corresponding position of the circuit board 3 and fixed to the circuit board 3 by a reflow operation, and finally the cover is completed. The cover device 100 is fixed in the form of the circuit board 3.

At the time of disassembly, an outward external force is applied to the cover body 1, and the circular ribs 141 of the first nip portion 11 and the second nip portion 12 and the circular through holes of the bracket 2 are displaced in the vertical direction. In addition, the first clamping portion 11 and the second clamping portion 12 smoothly transition out of the circular through hole and press against the opposite sides of the bracket 2 by the circular arc of the circular convex point 141, and correspondingly, the first The clamping portion 11 and the second clamping portion 12 are opened in a direction away from the bracket 2 until the cover 1 is completely disengaged from the bracket 2.

In the present embodiment, the first clamping portion 11 and the second clamping portion 12 are disposed on the side edge of the cover 1 and are formed by press-fitting a flat substrate (not shown). In other embodiments, the first clamping portion 11 and the second clamping portion 12 can be disposed at any position of the cover body 1. Further, the first clamping portion 11 and the second clamping portion 12 are integrally formed in the cover. The body 1 can also be assembled to the cover 1 by means of welding or snapping.

In summary, the creation meets the requirements of the invention patent, and the patent application is filed according to law. However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above embodiments, and those who are familiar with the skill of the present invention are equivalent to the equivalent modifications or changes made by the spirit of the present creation. It should be covered by the following patent application.

100Mask device

13 side wall

1 Cover

131 third fold line

10 top board

14Clamping mechanism

101 round hole

141circular bumps

102Center of gravity

2 bracket

103 gap

21 welding surface

11First clamping section

22 Groove

111First fold line

23

12Second gripping section

3Circuit board

121Second line

4 gap