TWI381699B - Grounding device of portable electronic device - Google Patents

Description

Grounding device for portable electronic device

The invention relates to a grounding device for a portable electronic device, in particular to a grounding device for a portable electronic device capable of effectively discharging static electricity.

With the rapid development of communication business, mobile electronic devices such as mobile phones, game consoles, and personal digital assistants (PDAs) are increasingly becoming the necessary communication tools in daily life, and also in order to satisfy the diverse preferences of consumers. Demand, more and more different types, models of portable electronic devices came into being.

The portable electronic device generally includes an upper casing and a body. The upper casing of the portable electronic device is provided with a liquid crystal module (LCM), and a circuit board is mounted on the body. In order to realize the electrical connection between the liquid crystal display module of the upper casing and the circuit board of the main body, the liquid crystal display module of the upper casing and the circuit board on the main body are covered by a flexible printed circuit (FPC). ) Electrically connected to each other.

When the portable electronic device is used, the liquid crystal display module is likely to cause high-voltage electrostatic discharge (ESD) of several kilovolts when used. In order to prevent the electrostatic discharge from causing damage to various electronic devices in the portable electronic device, the static electricity must be grounded by a predetermined grounding device. The conventional grounding treatment method is to introduce static electricity generated when the liquid crystal display module is used into the circuit board by FPC, and then ground. However, such a grounding process is easy for the FPC to completely ground the high-voltage static electricity of several thousand volts, so that the electronic components in the portable electronic device are damaged to shorten the service life of each electronic device; in severe cases, the portable device will be damaged. Electronic devices in a type of electronic device.

In view of the above, it is necessary to provide a grounding device that can effectively guide the electrostatic discharge path to avoid damage to various electronic devices in the portable electronic device by electrostatic discharge.

A grounding device for a portable electronic device, the portable electronic device comprising a liquid crystal display module, a circuit board and a frame, the circuit board having a system grounding end, the grounding device comprising a conductive plate, At least one conductive device and a sliding cover mechanism, wherein the conductive plate is mounted on the frame and connected to the liquid crystal display module; the conductive device is respectively connected to the conductive plate and the sliding cover mechanism, the sliding The cover mechanism is made of a conductive material that is interconnected with the system ground of the circuit board.

Compared with the prior art, the grounding device is provided by a conductive plate mounted on the upper casing, a conducting device mounted on the frame of the upper casing, a conductive sliding cover mechanism and a body provided with a system grounding end. A grounding path is formed to connect the high voltage static electricity of the liquid crystal display module mounted on the upper casing to the grounding end of the system, which effectively solves the problem of static electricity release and avoids electrostatic discharge to the portable electronic device. Internal electronic components cause damage.

The grounding device of the present invention can be applied to various types of portable electronic devices, such as mobile phones, game machines, PDAs, and the like. This embodiment is described by taking the slide type mobile phone 100 as an example.

Referring to FIG. 1 to FIG. 4 , the slide type mobile phone 100 includes an upper casing 10 , a grounding device (not labeled), a liquid crystal display module (not labeled), and a body 50 . The grounding device includes a conductive plate 20, at least one conducting device 30, and a sliding mechanism 40. In this embodiment, the number of the conducting devices 30 is four. The upper housing 10 is slidably coupled to the body 50 by a slide mechanism 40.

The upper casing 10 includes a casing 11 and a frame 13 . The outer casing 11 has a substantially rectangular shape and is mounted on the frame body 13. A substantially rectangular opening 112 is defined in the middle portion of the outer casing 11 . The frame body 13 is substantially rectangular, and includes four frame sides 131, 132, 133, and 134. The four frame sides 131, 132, 133, and 134 are sequentially connected to form a rectangular frame, and a part is formed in the middle portion thereof. The opening 112 on the outer casing 11 corresponds to the opening 136. The liquid crystal display module is assembled in the openings 112, 136. A spring mounting portion 15 and a stopper mounting portion 17 are defined at four corners of the frame body 13 .

As shown in FIG. 5 , the elastic piece mounting portion 15 is a hollow rectangular protrusion protruding from the surface of the frame 13 , and includes a mounting hole 153 and a rectangular mounting wall 155 closed around the surface. The mounting hole 153 has a substantially rectangular shape and is opened at a top corner position of the frame body 13 . The mounting wall 155 surrounds the mounting hole 153 .

The stopper mounting portion 17 is disposed at a top corner position of the frame body 13 and between the elastic piece mounting portion 15 and an outer edge of the frame body 13. The stopper mounting portion 17 includes a mounting groove 172 and a resisting wall 173 disposed parallel to the frame edges 131 and 133 of the frame body 13 and penetrating the frame body 13 . The block abutting wall 173 is a top wall of the frame 13 between the mounting groove 172 and the elastic piece mounting portion 15 .

The conductive plate 20 is a substantially rectangular metal foil and is sandwiched between the outer casing 11 of the upper casing 10 and the frame body 13. A substantially rectangular opening 202 is formed in the middle portion of the conductive plate 20, and the size of the opening 202 is substantially equal to the openings 112 and 136 of the outer casing 11 and the frame 13 to facilitate the installation of the liquid crystal display module. The adjacent four sides abut each other.

The conducting device 30 includes a resilient piece 32 and a stop 35.

Referring to FIG. 6 and FIG. 7 , the elastic piece 32 is substantially a cover-shaped rectangular piece, and includes a main body 320 , a first folded edge 321 , a second folded edge 323 , and a third folded edge 322 . The fourth folded edge 324, an elastic bending portion 325, and a resisting end 326. The main body 320 has a substantially cross shape and includes a central portion 3202 and four extending portions 3204 extending outward from the central portion 3202. A protrusion 328 is protruded from the center of the surface of the central portion 3202, and the protrusion 328 is substantially hemispherical. The ends of the four extending portions 3204 are vertically bent and extended toward the same side of the main body 320 to form the first folded edge 321 , the second folded edge 323 , the third folded edge 322 and the fourth folded edge 324 . A folded edge 321 and a third folded edge 322 are respectively substantially parallel to the second folded edge 323 and the fourth folded edge 324. The first flange 321 and the second flange 323 are formed by bending and extending from the ends of the opposite extensions 3204 of the main body 320. The third flange 322 and the fourth flange 324 are formed by two opposite extensions of the body 320. The end of 3204 is bent and formed. The elastic bending portion 325 is bent from the end of the second flange 323 toward the first flange 321 to be inclined at an oblique angle. The end of the elastic bending portion 325 is bent inwardly toward the main body 320 to form the abutting end 326.

Referring to FIG. 8, the stopper 35 is substantially a rectangular plate which is bent into a substantially "L" shape. The stopper 35 includes a main body portion 352 and a bent portion 355.

Referring to FIG. 3 and FIG. 4 , the sliding mechanism 40 includes a fixing member 41 , a sliding member 43 and two returning mechanisms 45 . Each of the two ends of the fixing member 41 is provided with a sliding slot 412. The sliding member 43 is slidably mounted on the sliding groove 412 of the fixing member 41 such that the sliding member 43 reciprocates along the path defined by the sliding groove 412 of the fixing member 41 under the driving of the returning mechanism 45. The fixing member 41 and the sliding member 43 are integrally formed of a hard conductive material such as metal.

The body 50 is substantially rectangular and is the main body of the slide type mobile phone 100. The main body 50 is provided with a circuit board (not shown), and the circuit board has a system grounding end. The body 50 is provided with a fixing member mounting portion 52. The fixing member mounting portion 52 is a substantially rectangular recess that is recessed on the inner surface of the body 50. The fixing member 41 of the sliding mechanism 40 can be fixedly mounted in the fixing member mounting portion 52, and can be screwed or metal interlocked and stacked on the circuit board by a conductive material such as metal. The system ground terminals are connected to each other.

When the slide type mobile phone 100 is assembled, the conductive device 30 and the frame 13 of the upper casing 10 are first assembled to each other. Referring to FIG. 9 , FIG. 10 and FIG. 11 , the elastic bending portion 325 and the abutting end 326 of the second folded edge 323 of the elastic piece 32 of the conductive device 30 are respectively formed by the elastic piece mounting portion 15 on the frame body 13 . One end of the mounting hole 153 is inserted. The abutting end 326 protrudes from the other end of the mounting hole 153 of the frame 13 and the second flange 323 of the elastic piece 32 abuts against the inner side of the mounting wall 155 of the elastic piece mounting portion 15 . The main body 320 of the elastic piece 32 is placed over the rectangular mounting wall 155 of the elastic piece mounting portion 15. The first flange 321 , the third flange 322 , and the fourth flange 324 of the elastic piece 32 respectively abut against the outer side of the rectangular mounting wall 155 . Then, the stopper 35 is attached to the stopper mounting portion 17 of the frame body 13. The body portion 352 of the stopper 35 abuts against the abutting wall 173 of the stopper mounting portion 17. The end portion of the main body portion 352 is in contact with the first flange 321 abutting against the rectangular mounting wall 155 of the abutting wall 173; the bent portion 355 of the stopper 35 is extended. The inside of the mounting groove 172 of the stopper mounting portion 17 is protruded from the other end of the mounting groove 172 of the frame body 13.

Referring to FIG. 3 and FIG. 4 together, the assembled frame 13 and the conductive device 30 are assembled with the outer casing 11 of the upper casing 10 and the conductive plate 20, and the outer casing 11 and the casing are assembled together. 13 The conductive plate 20 can be clamped between the outer casing 11 and the frame 13 by screwing or bonding. The conductive plate 20 and the protrusions 328 of the elastic piece 32 mounted on the frame 13 abut each other.

Next, the assembled upper case 10 and the slide mechanism 40 are integrally assembled to each other. The sliding member 43 of the sliding mechanism 40 and the frame 13 of the upper casing 10 are assembled to each other, and the sliding member 43 is screwed, welded, or the like with a conductive material such as metal and the frame 13 They are fixed to each other. After being assembled, corresponding to the sliding connection position of the sliding member 43 of the sliding mechanism 40 and the fixing member 41, the abutting end 326 of the elastic piece 32 mounted on the frame 13 of the upper casing 10 is assembled. Abutting against the outer surface of the sliding slot 412 of the fixing member 41, the bending portions 355 of the stoppers 35 installed at the four corner positions of the frame body 13 are respectively associated with the sliding member 43 The four vertices contradict each other.

Next, the body 50 is assembled with the assembled upper housing 10 and the slide mechanism 40. The fixing member 41 of the sliding mechanism 40 is fixedly mounted in the fixing member mounting portion 52 of the body 50, and is connected to the grounding end of the system on the circuit board by a screw made of a conductive material such as metal. Tightly together, the assembly work of the mobile phone 100 is completed.

It can be understood that the number of the elastic piece 32 and the stopper 35 is not limited to four in the embodiment, and the number thereof may be appropriately increased or decreased as needed.

During use of the slide-type mobile phone 100, the liquid crystal display module mounted on the upper casing 10 is liable to cause high-voltage static electricity of the order of several kilovolts. The high voltage static electricity can be electrostatically discharged by the grounding device disposed in the mobile phone 100 to avoid damage to electronic components inside the mobile phone 100. Specifically, when the liquid crystal display module of the mobile phone 100 generates high-voltage static electricity, the static electricity will sequentially pass through the conductive plate 20 abutting the liquid crystal display module, the elastic piece 32 abutting the conductive plate 20, and the elastic piece. The 32-phase abutting stopper 35, the sliding member 43 of the sliding mechanism 40 contacting the stopper 35, the fixing member 41 slidably coupled to the sliding member 43 of the sliding cover mechanism 40, and the body fixed to the fixing member 41 50 thereby directing static electricity to the system ground of the circuit board of the mobile phone 100 so that static electricity can be effectively released.

It can be understood that when the liquid crystal display module of the mobile phone 100 induces high voltage static electricity, the static electricity can also be sequentially passed through the conductive plate 20 abutting the liquid crystal display module, the elastic piece 32 abutting the conductive plate 20, and the elastic piece. The fixing member 41 of the sliding mechanism 40 contacting the end of the abutting end 32 and the body 50 fixed to the fixing member 41 to guide the static electricity to the system ground end of the circuit board of the mobile phone 100, so that the static electricity can be Effective release.

The grounding device utilizes a conductive plate 20 mounted on the upper casing 10, a conducting device 30 mounted on the frame 13 of the upper casing 10, and a conductive sliding mechanism 40 to be combined with the body 50 provided with the system grounding end. A grounding path is formed to discharge the high voltage static electricity introduction body 50 of the liquid crystal display module mounted on the upper casing 10 to the grounding end of the system, which effectively solves the problem of static electricity release and avoids electrostatic discharge to the portable electronic The electronic components inside the device cause damage.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and equivalent modifications or variations made by those skilled in the art in light of the spirit of the present invention are It should be covered by the following patent application.

Upper housing. . . 10

mobile phone. . . 100

shell. . . 11

Opening. . . 112,136,202

framework. . . 13

Frame side. . . 131,132,133,134

Shrapnel mounting section. . . 15

Mounting holes. . . 153

Install the wall. . . 155

Block installation department. . . 17

Installation slot. . . 172

Resist the wall. . . 173

Conductive plate. . . 20

Conduction device. . . 30

shrapnel. . . 32

main body. . . 320

Central Department. . . 3202

Extension. . . 3204

First hem. . . 321

The third fold. . . 322

Second hem. . . 323

The fourth fold. . . 324

Elastic bending section. . . 325

Resist the end. . . 326

Block. . . 35

Main body. . . 352

Bending section. . . 355

Slide mechanism. . . 40

Fastener. . . 41

Chute. . . 412

Sliding parts. . . 43

Reply agency. . . 45

Ontology. . . 50

Fixing parts installation. . . 52

1 is a perspective view of a portable electronic device to which the grounding device of the present invention is applied; FIG. 2 is a perspective view of the portable electronic device to which the grounding device of the present invention is applied; FIG. 3 is a perspective exploded view of a portable electronic device with a grounding device; FIG. 4 is a perspective exploded view of a portable electronic device using the grounding device of the present invention at another viewing angle; FIG. 5 is a top view of the portable electronic device shown in FIG. FIG. 6 is a perspective view of the elastic piece of the grounding device of the portable electronic device shown in FIG. 3; FIG. 7 is a perspective view of the elastic piece of the grounding device of the portable electronic device shown in FIG. FIG. 8 is a perspective view of the block of the grounding device of the portable electronic device shown in FIG. 3; FIG. 9 is a view showing the elastic piece and the block of the grounding device of the portable electronic device shown in FIG. FIG. 10 is a perspective view of the assembly of the body of the portable electronic device shown in FIG. 3 and the block of the block mounted on the frame of the upper casing. A schematic perspective view; FIG. 11 a partial enlarged view of the mounting position of the leaf spring 9 as shown in FIG.

Upper housing. . . 10

mobile phone. . . 100

shell. . . 11

Opening. . . 112,136,202

framework. . . 13

Frame side. . . 131,132,133,134

Shrapnel mounting section. . . 15

Block installation department. . . 17

Conductive plate. . . 20

Conduction device. . . 30

shrapnel. . . 32

Block. . . 35

Slide mechanism. . . 40

Fastener. . . 41

Chute. . . 412

Sliding parts. . . 43

Ontology. . . 50

Fixing parts installation. . . 52

Claims (10)

A grounding device for a portable electronic device, the portable electronic device comprising a liquid crystal display module, a circuit board and a frame, the circuit board having a system grounding end, wherein the grounding device comprises a conductive plate, at least one conducting device and a sliding cover mechanism, wherein the conductive plate is mounted on the frame and connected to the liquid crystal display module; the conducting device is respectively connected to the conductive plate and the sliding cover mechanism The slider mechanism is made of a conductive material that is interconnected with a system ground end on the circuit board. The grounding device of the portable electronic device of claim 1, wherein the conducting device comprises a resilient piece, the frame is provided with a resilient piece mounting portion, and the elastic piece is mounted in the elastic piece mounting portion, The elastic piece and the conductive plate and the sliding cover mechanism are in contact with each other. The grounding device of the portable electronic device of claim 2, wherein the conducting device further comprises a stopper, and the frame body is correspondingly provided with a stopper mounting portion, and the stopper is installed in the In the stopper mounting portion, the stopper and the elastic piece and the slide mechanism are in contact with each other. The grounding device of the portable electronic device of claim 2, wherein the elastic piece mounting portion includes a mounting hole that is open through the frame; the elastic piece includes a main body and a main body end The elastic bending portion bent toward the main body side, the elastic bending portion is installed in the mounting hole, and the end thereof is protruded from the other end of the mounting hole. The grounding device of the portable electronic device of claim 4, wherein the elastic piece further comprises two opposite first and second folded edges formed by vertically bending the same side of the main body; the elastic bending The folded portion is bent at an oblique angle from the end of the second folded edge toward the main body, and the elastic piece mounting portion further includes a mounting wall forming the mounting hole, and the second folded edge of the elastic piece abuts against the The inside of the mounting wall abuts the outer side of the mounting wall. The grounding device of the portable electronic device of claim 3, wherein the block mounting portion is disposed on the frame and adjacent to the elastic piece mounting portion, and includes a mounting groove and a resisting wall. The mounting groove is disposed parallel to the edge of the frame and penetrates the frame body, and the resisting wall is a frame wall between the mounting groove and the elastic piece mounting portion; the stop block includes a main body portion and a In the bent portion, the main body portion abuts against the resisting wall and is in contact with the elastic piece, and the bent portion is inserted into the mounting groove and protrudes from the other end of the mounting groove. The grounding device of the portable electronic device of claim 4, wherein a center of the main body of the elastic piece protrudes from a protrusion, and the protrusion and the conductive plate are in contact with each other. The grounding device of the portable electronic device of claim 1, wherein the conductive plate is a rectangular metal piece, and a rectangular opening is formed in the upper middle portion. The grounding device of the portable electronic device of claim 7, wherein the conducting device is four, the frame is rectangular, and the conducting device is disposed at a top corner of the frame. . The grounding device of the portable electronic device of claim 4, wherein the elastic piece further comprises an abutting end, and the abutting end is bent and extended by an end of the elastic bending portion of the elastic piece.