TWI404490B - Elastic sheet structure - Google Patents

Abstract

The present invention provides an elastic sheet structure including a fixing section, an elastic section and a connecting section. The fixing section and the elastic section connects two ends of the connecting section. The end of the connecting section extends an anti-overload section. The anti-overload section includes a supporting part, two guiding parts and a guiding recess. The anti-overload section is folded at the middle to form a supporting part. The two guiding parts are located on two sides of the supporting part. The elastic sheet structure can limit a multi-directional displacement of the connecting section.

Description

Shrapnel structure

The present invention relates to a shrapnel structure, and more particularly to a shrapnel structure for grounding.

The electronic product is often provided with a shrapnel structure, a pressing member, a circuit board, etc., and the elastic structure can electrically connect the conductive elements of the electronic product by interaction with the pressing member, such as electronic components and circuit boards. The shrapnel arrangement between the electronic components enables electrical conduction between the electronic components and the circuit board. The electronic components can be grounded by electrical conduction to effectively solve the problems of electromagnetic radiation (EMI) and electrostatic discharge (ESD).

The elastic structure generally includes a fixing portion, a contact portion and a resilient portion. The fixing portion is welded to the circuit board, and the contact portion is abutted against the electronic device pressing member at the head thereof, and is in the fixing portion and the contact portion. The tension between the two connects the two together. However, the structural design of the shrapnel structure is such that when the elastic portion is pressed, the offset is easily generated, so that the contact position between the contact portion and the pressing member is displaced, resulting in unstable connection between the pressing member and the circuit board. .

In view of the above, it is necessary to provide a shrapnel structure that can effectively limit multiple directions of deflection when the shrapnel is pressed.

An elastic structure includes a fastening section, an elastic section and a contact section, wherein the fastening section and the contact section are respectively connected to opposite ends of the elastic section, and the contact section further has an over-pressure prevention section. The overpressure prevention section includes a support portion, two guiding portions and a guiding groove between the two guiding portions. The supporting portion and the guiding portion are respectively formed to be bent and extended toward the fixing portion, and the two guiding portions are located at two sides of the supporting portion. The fixing section further includes a fixing portion, a positioning portion and a bulletproof portion, wherein the fixing portion is used for welding with the circuit board, and the positioning portion is formed by one end of the fixing portion extending perpendicularly to the opposite direction of the circuit board toward the fixing portion. The ballistic portion is formed by an extension of one end of the positioning portion.

Compared with the prior art, the structure of the shrapnel can be effectively limited by the cooperation relationship between the anti-ballistic portion of the fixing section and the guiding groove of the anti-overpressure section and the matching relationship between the positioning part of the fixing section and the anti-overpressure section guiding part. The spring is biased in multiple directions when pressed.

100‧‧‧Shrap structure

10‧‧‧Fixed section

12‧‧‧Fixed Department

14‧‧‧ Positioning Department

16‧‧‧Anti-ballistic department

122‧‧‧ first end

124‧‧‧ second end

162‧‧‧Blasting section

20‧‧‧Flexible section

22‧‧‧First bend

24‧‧‧Second bend

222‧‧‧ first connection

224‧‧‧First Elastic Department

24‧‧‧Second bend

242‧‧‧Second connection

244‧‧‧Second elastic part

246‧‧‧ Third connection

30‧‧‧Contact section

32‧‧‧Contacts

34‧‧‧First curved section

40‧‧‧Connection section

42‧‧‧Connecting Department

44‧‧‧Second curved part

50‧‧‧Anti-overpressure section

54‧‧‧Support

55‧‧‧Bend

56‧‧‧Director

58‧‧‧ Guide groove

700‧‧‧ boards

800‧‧‧Resistance

1 is a schematic view of a shrapnel structure according to a preferred embodiment of the present invention; FIG. 2 is a schematic side view of a shrapnel structure according to a preferred embodiment of the present invention; and FIG. 3 is a schematic view showing a state in which the shrapnel structure of the preferred embodiment of the present invention is under pressure; A schematic view of the assembly of the shrapnel structure on the circuit board in accordance with a preferred embodiment of the present invention.

Referring to FIG. 1, the elastic structure 100 of the preferred embodiment of the present invention can be formed by bending a metal sheet with good electrical conductivity. The shrapnel structure 100 can be used to electrically connect a circuit board 700 and a pressing member 800 (see FIGS. 3 and 4). A fastening section 10, an elastic section 20, a contact section 30, a connecting section 40 and an overpressure preventing section 50 are included.

Referring to FIG. 2 , the fastening section 10 includes a fastening portion 12 , a positioning portion 14 and a bulletproof portion 16 . The fixing portion 12 has a rectangular planar shape for soldering on the circuit board 700. The fastening portion 12 includes a first end 122 and an opposite second end 124. The positioning portion 14 is formed by the first end 122 of the fixing portion fixing portion 12 extending perpendicularly to the opposite direction of the circuit board 700 toward the fixing portion 12. The ballistic portion 16 is formed by extending from one of the ends of the positioning portion 14. One end of the ballistic portion 16 opposite to the positioning portion 14 extends perpendicularly into the consolidation section 10 and extends a bullet-proof section 162 that is substantially parallel to the fastening portion 12. It can be understood that the position of the ballistic portion 16 is not limited to the middle of the end of the positioning portion 14, but may be any position at the end of the positioning portion 14.

The elastic segment 20 includes a first bent portion 22 and a second bent portion 24. The first bending portion 22 includes a first connecting portion 222 and a first elastic portion 224 . The first connecting portion 222 is substantially arc-shaped. The first connecting portion 222 is formed by an arc extending from the second end 124 of the fixing portion 12 toward the opposite side of the fixing portion 12 and the circuit board 700. The first elastic portion 224 is curved by a distance from the end of the first connecting portion 222 toward the positioning portion 14 . The first elastic portion 224 is substantially parallel to the fixed portion 12.

The second bending portion 24 includes a second connecting portion 242 , a second elastic portion 244 , and a third connecting portion 246 . The second connecting portion 242 is substantially arcuate and is formed by an arc extending from an end of the first elastic portion 224 in a direction opposite to the fixing portion 12 . The second elastic portion 244 is curved at an end from the end of the second connecting portion 242 in an opposite direction to the positioning portion 14. The second elastic portion 244 is substantially the same as the first elastic portion 224 parallel. The third connecting portion 246 extends from the end of the second elastic portion 244 toward a square arc opposite to the first elastic portion 224.

The contact segment 30 includes a contact portion 32 and a first curved portion 34. The contact portion 32 extends from the third connecting portion 246 toward the positioning portion 14 and is parallel to the fixing portion 12 . The first curved portion 34 extends from the end of the contact portion 32 toward the positioning portion 14.

The connecting section 40 includes a connecting portion 42 and a second curved portion 44. The connecting portion 42 extends from the end of the first curved portion 34 in a direction perpendicular to the fixing portion 12. The second curved portion 44 extends from the end of the connecting portion 42 away from the contact portion 30.

The overpressure prevention section 50 includes a support portion 54 (see FIG. 2), two guide portions 56, and a guide groove 58. The overpressure prevention section 50 is formed by extending the end of the second curved portion 44 in a direction opposite to the connecting portion 42, and the overpressure prevention portion 50 is located below the bulletproof portion 162 with a certain gap therebetween. The intermediate portion of the overpressure prevention section 50 is bent and extended for a distance to form a support portion 54. The support portion 54 is disposed opposite to the positioning portion 14 with a gap therebetween and parallel to each other. The sections of the overpressure prevention section 50 on both sides of the support portion 54 are bent to extend from the two guide portions 56 and the two guide portions 56 and the bending portion 55 of the overpressure prevention portion 50. The guiding portion 56 protrudes from the outer side of the positioning portion 14, and the guiding portion 56 and the positioning portion 14 are parallel to each other with a gap. A guiding groove 58 is formed between the two guiding portions 56 for accommodating the bulletproof portion 16.

It can be understood that the guiding portion 56 is not limited to two, and the provision of one guiding portion 56 can also achieve the guiding effect.

Referring to FIG. 3, when the elastic structure 100 is compressed and contracted, the elastic segment 20 is elastically deformed toward the fixing portion 12, and the contact portion 30 integrally formed with the elastic portion 20 is The connecting section 40 and the overpressure preventing section 50 are also displaced in the vertical direction toward the fixing portion 12, and the fixing section 10 is stationary. In this process, since the positioning portion 14 is disposed between the supporting portion 54 and the guiding portion 56 and disposed at a distance from the two, the positioning portion 14 can restrict the supporting portion 54 and the guiding portion 56 from being perpendicular to the positioning portion. The offset in the 14 direction. The abutting engagement of the two end walls 582 on both sides of the guiding groove 58 with the ballistic portion 16 can limit the deviation of the guiding groove 58 in the symmetrical direction of the two end walls 582. Therefore, the contact portion 30 integrally connected with the support portion 54, the guiding portion 56 and the guiding groove 58 is well restricted in the direction perpendicular to the positioning portion 14 and the direction of the two end walls 582 of the guiding groove 58 during the movement. .

The support portion 54 prevents plastic deformation of the shrapnel structure 100 during compression of the shrapnel structure 100. Specifically, when the elastic segment 20 is deformed after being pressed, the support portion 54 is correspondingly displaced in the vertical direction of the fixing portion 12 toward the fixing portion 12, when the elastic segment 20 is not plastically deformed, The deformation of the support portion 54 will be abutted against the fixed portion 12, so that the elastic portion 20 stops deforming, so that the elastic portion 20 is prevented from being excessively deformed when the elastic structure 10 is excessively pressed, so that the elastic portion 20 is excessively deformed. Segment 20 produces plastic deformation or even fracture.

Moreover, the bulletproof section 162 located at the top end of the bulletproof portion 16 serves to prevent the shrapnel structure 100 from being re-timed after being pressed, and the contact portion 30 is in poor contact with the resisting member 800 due to excessive return. Specifically, when the elastic section 20 is pressed and then reset, the overpressure prevention section 50 integrated with the elastic section 20 also moves toward the fixed portion 12 in the direction perpendicular to the fixing portion 12 along with the elastic section 20. Since the elastic structure is stored when the elastic structure 100 is pressed, when the elastic structure is returned, the overpressure prevention section 50 is often caused by the elastic force. There is a risk of ejecting the position when it is not under pressure. However, the set bulletproof section 162 is located directly above the resisting portion 52 when there is no pressure, and a space is left. When the elastic structure 100 is returned, if the resisting portion 52 is beyond In the uncompressed position, the bulletproof section 162 will abut against the abutting portion 52, so that the elastic structure 100 stops the returning element to avoid contact failure between the contact portion 30 and the resisting member 800.

100‧‧‧Shrap structure

10‧‧‧Fixed section

12‧‧‧Fixed Department

14‧‧‧ Positioning Department

16‧‧‧Anti-ballistic department

122‧‧‧ first end

124‧‧‧ second end

162‧‧‧Blasting section

20‧‧‧Flexible section

22‧‧‧First bend

24‧‧‧Second bend

222‧‧‧ first connection

224‧‧‧First Elastic Department

24‧‧‧Second bend

242‧‧‧Second connection

244‧‧‧Second elastic part

246‧‧‧ Third connection

30‧‧‧Contact section

32‧‧‧Contacts

34‧‧‧First curved section

40‧‧‧Connection section

42‧‧‧Connecting Department

44‧‧‧Second curved part

50‧‧‧Anti-overpressure section

54‧‧‧Support

55‧‧‧Bend

56‧‧‧Director

58‧‧‧ Guide groove

Claims (9)

An elastic structure includes a fastening section, an elastic section and a contact section, wherein the fastening section and the contact section are respectively connected to opposite ends of the elastic section, and the improvement is that the contact section further extends The pressure-proof section includes a support portion, two guiding portions and a guiding groove between the two guiding portions. The supporting portion and the guiding portion are respectively formed by bending and extending toward the fixing portion, and the two guiding portions are located at the supporting portion. On both sides, the fastening section includes a positioning portion and a bulletproof portion. The positioning portion is located between the support portion and the guiding portion, and a gap is left between the three, and the three are parallel to each other, and the bulletproof portion is accommodated in the guiding slot. The position of the ballistic portion corresponds to the position of the support portion. The sprocket structure of claim 1, wherein the fastening portion includes a fixing portion for soldering to the circuit board, the positioning portion being bent from one end toward the fixing portion and the circuit The plate is formed to extend vertically in the opposite direction, and the ballistic portion is formed by extending one end of the positioning portion. The shrapnel structure of claim 2, wherein the ballistic portion is received in the guide groove, and the position of the ballistic portion corresponds to the position of the support portion. The shrapnel structure of claim 3, wherein one end of the anti-ballistic portion opposite to the positioning portion is bent toward the fixed portion to extend a bullet-proof portion, and the anti-ballistic portion is located at the over-pressure prevention portion. Above the part, there is a certain gap between the bulletproof part and the overpressure prevention section. The shrapnel structure of claim 1, wherein the shrapnel structure further comprises a connecting section, the connecting section connecting the contact section and the over-pressure preventing section. The elastic structure of claim 5, wherein the elastic segment comprises a first bending portion and a second bending portion, the first bending portion comprising a first connecting portion and a first elastic portion The second bending portion includes a second connecting portion, a second elastic portion and a third connecting portion. The first bent portion and the second bent portion are connected by the first elastic portion and the second connecting portion. And connected. The shrapnel structure of claim 6, wherein the contact section is parallel to the fixing portion. The shrapnel structure of claim 1, wherein the shrapnel structure is made of a metal plate having good electrical conductivity. The shrapnel structure of claim 1, wherein the elastic structure is integrally formed.