TWI463743B - Elastic sheet structure and electronic device using the same - Google Patents

Description

Shrapnel structure and electronic device using the same

The invention relates to a shrapnel structure and an electronic device using the same.

There is a shrapnel between the electronic components inside the electronic product and the circuit board. By providing the shrapnel: on the one hand, the electrical connection between the electronic component and the circuit board can be realized. On the other hand, when the electronic component has the requirement of electrostatic discharge, the electronic component is connected with the grounding point on the circuit board by the elastic piece. Electrostatic discharge.

However, the conventional shrapnel is generally fixed to the circuit board by soldering, so that it is difficult to replace when the shrapnel is damaged.

In view of the above, it is necessary to provide a shrapnel structure that is easy to replace.

In addition, it is also necessary to provide an electronic device to which the above-described shrapnel structure is applied.

An elastic structure for connecting to a circuit board, the circuit board having a through hole, the elastic structure comprising a first contact portion and a buckle portion extending from the first contact portion, the buckle portion The through hole is interposed and releasably engaged to releasably hold the elastic structure on the circuit board.

An electronic device includes a circuit board, a first electronic component and a resilient structure, the circuit board defines a through hole, the elastic structure includes a first contact portion, and the first a latching portion extending from the contact portion for contacting the first electronic component, the latching portion being inserted and releasably engaged with the through hole to releasably latch the elastic structure On the board.

Compared with the prior art, the elastic structure of the present invention can be releasably engaged in the through hole of the circuit board by the buckle portion, so that the elastic structure can be fixed to the circuit board without soldering.

10, 50‧‧‧ shrapnel structure

12, 52‧‧‧ first contact

14, 54, ‧ ‧ buckle

16, 56‧‧‧Second contact

17, 58‧‧ ‧ Responsible Department

18, 574‧‧‧Overvoltage protection

20‧‧‧ boards

220‧‧‧through hole

222‧‧‧ side wall

30‧‧‧First electronic components

40‧‧‧Second electronic components

50‧‧‧Shrap structure

542‧‧‧Protection

57‧‧‧ Third contact

572‧‧‧Connection section

1 is an exploded view of a shrapnel structure and a circuit board connected thereto according to a preferred embodiment of the present invention; FIG. 2 is a schematic view of a shrapnel structure according to a preferred embodiment of the present invention; and FIG. 3 is a view of a preferred embodiment of the present invention. Figure 4 is a cross-sectional view of the shrapnel structure shown in Figure 3 along the line VV; Figure 5 is a schematic view of the shrapnel structure shown in Figure 4 in contact with the first electronic component and the second electronic component; Figure 6 is a schematic view of the present invention A schematic view of a shrapnel structure of another preferred embodiment.

The shrapnel structure of the present invention is suitable for use in electronic devices such as mobile phones, personal digital assistants (PDAs), and palmtop computers. In the following, the shrapnel structure 10 of the preferred embodiment of the present invention is applied to a mobile phone (not shown) as an example.

Referring to FIGS. 1 and 5 , the mobile phone includes a shrapnel structure 10 , a circuit board 20 , a first electronic component 30 , and a second electronic component 40 . The shrapnel structure 10 is made of a metal material having good electrical conductivity, such as an average carbon content of 1%, a chromium content of 17%, and a nickel content of 7%. Stainless steel (brand number 1Cr17Ni7), and the desired contour of the shrapnel structure 10 can be formed by stamping a metal sheet made of the aforementioned metal material.

Referring to FIG. 2 , the elastic structure 10 includes a first contact portion 12 , a V-shaped buckle portion 14 bent from one side of the first contact portion 12 , and a second contact portion 16 formed on the top of the buckle portion 14 . .

The elastic structure 10 further includes two V-shaped abutting portions 17 respectively bent and extended from both ends of the first contact portion 12 and an over-pressure preventing portion 18 bent and extended from the other side of the first contact portion 12. The overpressure prevention portion 18 is disposed opposite to the buckle portion 14, and the end portion of the overpressure prevention portion 18 is substantially parallel to the first contact portion 12. When the first contact portion 12 is overstressed, the overpressure prevention portion 18 will abut against the circuit board 20 to prevent the shrapnel structure 10 from being damaged. The abutting portion 17 is symmetrically disposed. When the elastic structure 10 is mounted on the circuit board 20, the abutting portion 17 abuts against the circuit board 20 to fix the elastic structure 10 to the circuit board 20. In addition, the resisting portion 17 can also be connected to a conductive end (not shown) on the circuit board 20 to electrically connect the shrapnel structure 10 to the circuit board 20.

Referring to FIG. 2 and FIG. 4, a through hole 220 is formed in the circuit board 20 for passing through. The through hole 220 includes two opposite side walls 222, and the distance between the two side walls 222 is smaller than the distance between the openings of the V-shaped snap portions 14. Therefore, when the buckle portion 14 passes through the through hole 220, the buckle portion 14 will be compressed to have a tendency to expand, so that the buckle portion 14 is locked in the through hole 220.

Referring to FIG. 4, when the foregoing spring structure 10 is mounted on the circuit board 20, the following steps may be performed: aligning the latching portion 14 of the spring structure 10 with the through hole 220 of the circuit board 20 to face the circuit board 20. The first contact portion 12 is pressed to cause the hook portion 14 to enter the through hole 220. As the latching portion 14 enters, the two sides of the latching portion 14 abut against the side wall 222 of the through hole 220, so that the latching portion 14 is compressed and has a tendency to expand. Continue to press the first contact portion 12 until the resisting portion 17 abuts against the circuit board 20 and is electrically conductive on the circuit board The end is connected, so that the shrapnel structure 10 is fixed to the circuit board 20.

Referring to FIG. 3 and FIG. 5 , the first electronic component 30 is mounted on the first contact portion 12 of the elastic structure 10 and the second electronic component 40 is mounted on the second contact portion 16 . The electronic component 30 and the second electronic component 40 are electrically connected to the circuit board. At this time, the first electronic component 30 presses the first contact portion 12 to slightly shift toward the circuit board 20 to have a tendency to rebound, so that the first electronic component 30 and the first contact portion 12 closely abut, thereby making the first electronic component 30 and the shrapnel structure 10 maintain a stable electrical connection. At the same time, the latching portion 14 is pressed and slightly deformed, so that the second electronic component 40 and the second contact portion 16 are closely resisted, so that the second electronic component 40 and the elastic structure 10 are also stably connected. .

Referring to FIG. 6 , the elastic structure 50 of the other embodiment of the present invention includes a first contact portion 52 , two fastening pieces 54 respectively bent and extended from two sides of the first contact portion 52 , and each of the fastening pieces 54 . The end portion is formed with a second contact portion 56 and a third contact portion 57 which is bent away from one end of the first contact portion 52 and is disposed opposite to the latching piece 54.

The aforementioned snap tabs 54 are spaced apart. The locking piece 54 is configured to engage the elastic structure 50 in the through hole 220 of the circuit board 20 by aligning the locking piece 54 with the through hole 220, and then pressing the locking piece 54 and causing the same. When the first contact portion 52 is pressed, the first fastening portion 52 is pushed into the through hole 220, and the locking piece 54 is stopped. The locking piece 54 is restored to the original shape and is abutted on both sides of the through hole 220. In this manner, the elastic structure 50 is engaged with the circuit board 20. Therefore, the locking piece 54 is coupled to a locking portion (not shown) to engage the elastic structure 50 on the circuit board 20. In addition, the end portion of each of the locking pieces 54 is bent outwardly in the direction of the first contact portion 52 to form a retaining portion 542. When the locking piece 54 is inserted into the through hole of the circuit board 20 The inner portion 542 is configured to prevent the shrapnel structure 50 from coming off the circuit board 20 in the opposite direction.

The third contact portion 57 is substantially a sheet-like body parallel to the first contact portion 52 and located above the first contact portion 52 and connected to the first contact portion 52 by a connecting portion 572. The third contact portion 57 is disposed offset from the first contact portion 52 in a direction perpendicular to the first contact portion 52. Thus, the two electronic components offset in the vertical direction can be connected by a resilient structure 50. In addition, an over-pressure prevention portion 574 extending in the direction of the first contact portion 52 is disposed at an end of the third contact portion 57. The over-pressure prevention portion 574 is disposed between the first contact portion 52 and the third contact portion 57. Therefore, the third contact portion 57 is prevented from being excessively deformed when it is pressed, thereby affecting the use effect.

The elastic structure 50 further includes two V-shaped abutting portions 58 respectively bent and extended by the two ends of the first contact portion 52. The abutting portion 58 is in contact with the conductive end of the circuit board 20 to electrically connect the spring structure 50 to the circuit board 20.

The elastic structure 10, 50 of the present invention is engaged in the through hole 220 of the circuit board 20 by the fastening portions 14, 54 respectively, so that the elastic structure 10, 50 can be fixed to the circuit board 20 without soldering. In addition, the first contact portion 12 of the elastic structure 10 and the third contact portion 574 of the elastic structure 50 elastically interfere with the first electronic component 30, and the second contact portion 16, 56 elastically interfere with the second electronic component 40, so that A single shrapnel can connect two different electronic components at the same time, saving the amount of shrapnel.

10‧‧‧Sheet structure

12‧‧‧First contact

14‧‧‧Snap Department

16‧‧‧Second contact

17‧‧‧Responsible Department

18‧‧‧Overvoltage protection

Claims (18)

An elastic structure is connected to a circuit board, and a through hole is defined in the circuit board, wherein the elastic structure comprises a first contact portion and a buckle portion extending from the first contact portion. The latching portion is inserted and releasably engaged with the through hole to releasably hold the elastic structure on the circuit board. The elastic structure further includes two ends extending from the first contact portion In the abutting portion, the abutting portion has a V shape. The shrapnel structure of claim 1, wherein the latching portion is a V-shaped snap tab that is bent and extended from one side of the first contact portion. The shrapnel structure of claim 2, wherein the top of the buckle portion is formed with a second contact portion. The shrapnel structure of claim 1, wherein the latching portion comprises two latching pieces respectively extending from two sides of the first contact portion, and the two latching pieces are spaced apart. The shrapnel structure of claim 4, wherein a second contact portion is formed at an end of each of the foregoing fastening tabs. The shrapnel structure of claim 4, wherein the end portion of each of the fastening tabs is bent away from the other of the fastening tabs to extend a retaining portion. The shrapnel structure of claim 1, wherein the shrapnel structure further comprises an overpressure preventing portion extending from the other side of the first contact portion. The shrapnel structure of claim 5, wherein the shrapnel structure further comprises a third contact portion extending from an end of the first contact portion, the third contact portion being opposite to the second contact portion The third contact portion is disposed offset from the first contact portion in a biasing direction thereof. The shrapnel structure of claim 8, wherein the end portion of the third contact portion extends in the direction of the first contact portion with an overpressure prevention portion, and the overpressure prevention portion is disposed at the first contact portion. The first Between the three contacts. An electronic device includes a circuit board, a first electronic component and a resilient structure, wherein the circuit board defines a through hole, the elastic structure includes a first contact portion and a bent portion extending from the first contact portion a latching portion for contacting the first electronic component, the latching portion being inserted and releasably engaged with the through hole to releasably retain the spring structure on the circuit The elastic structure of the plate further includes two abutting portions respectively extending from the two ends of the first contact portion, and the abutting portion has a V shape. The electronic device of claim 10, wherein the latching portion is a V-shaped snap tab that is bent and extended by one side of the first contact portion. The electronic device of claim 11, wherein the electronic device comprises a second electronic component, and the top of the latching portion is formed with a second contact portion for contacting the second electronic component. The electronic device of claim 10, wherein the fastening portion comprises two fastening tabs extending from two sides of the first contact portion, the two fastening tabs being spaced apart. The electronic device of claim 13, wherein the electronic device comprises a second electronic component, and each end of the latching piece is formed with a second contact portion for contacting the second electronic component. . The electronic device of claim 13, wherein the end portion of each of the fastening tabs is bent away from the other of the fastening tabs to extend a retaining portion. The electronic device of claim 10, wherein the elastic structure further comprises an overpressure prevention portion extending from the other side of the first contact portion. The electronic device of claim 14, wherein the elastic structure further comprises a third contact portion extending from an end of the first contact portion, the third contact portion being opposite to the second contact portion The third contact portion is disposed offset from the first contact portion in a biasing direction thereof. The electronic device of claim 17, wherein the end of the third contact portion is The first contact portion extends in an anti-overpressure portion, and the anti-overvoltage portion is disposed between the first contact portion and the third contact portion.