CN2728167Y - Surface Adhesive Shrapnel Against Elastic Fatigue - Google Patents
Surface Adhesive Shrapnel Against Elastic Fatigue Download PDFInfo
- Publication number
- CN2728167Y CN2728167Y CN 200420066291 CN200420066291U CN2728167Y CN 2728167 Y CN2728167 Y CN 2728167Y CN 200420066291 CN200420066291 CN 200420066291 CN 200420066291 U CN200420066291 U CN 200420066291U CN 2728167 Y CN2728167 Y CN 2728167Y
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- China
- Prior art keywords
- face
- joint
- shell fragment
- movable arm
- curved surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000000853 adhesive Substances 0.000 title claims 2
- 230000001070 adhesive effect Effects 0.000 title 1
- 238000003466 welding Methods 0.000 claims abstract 2
- 230000001154 acute effect Effects 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- DMFGNRRURHSENX-UHFFFAOYSA-N beryllium copper Chemical compound [Be].[Cu] DMFGNRRURHSENX-UHFFFAOYSA-N 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 11
- 230000005855 radiation Effects 0.000 abstract description 2
- 238000005476 soldering Methods 0.000 abstract 1
- 239000012634 fragment Substances 0.000 description 44
- 229910000679 solder Inorganic materials 0.000 description 13
- 238000000034 method Methods 0.000 description 11
- 239000002184 metal Substances 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 10
- 230000008901 benefit Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 229910000906 Bronze Inorganic materials 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 239000010974 bronze Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000005670 electromagnetic radiation Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 208000032365 Electromagnetic interference Diseases 0.000 description 1
- 241001236644 Lavinia Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
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- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The utility model provides an elastic fatigue resistant surface-mounted elastic sheet, which mainly comprises a pressing surface, a first joint extending curved surface, a first movable arm surface, a second joint extending curved surface, a second movable arm surface, a third joint extending curved surface, a third movable surface, a fourth joint extending curved surface, a welding surface, a first extending surface and a second extending surface, and is applied to a printed circuit Board (PC Board) by the aid of a B-type design; the surface mount machine is used to absorb and place the elastic sheet on the printed circuit board, and then the elastic sheet is preheated and heated by the soldering furnace and is soldered and fixed, so as to achieve Grounding (Grounding), Shielding effect, circuit reduction, impedance reduction, energy reduction and radiation emission reduction, and achieve the purpose of suppressing Electromagnetic Interference (EMI) and Electrostatic Discharge (Electromagnetic Discharge) and meeting the requirements of Electromagnetic Compatibility (EMC).
Description
Technical field
The utility model relates to the tired surface mount shell fragment of a kind of elastoresistance, refers to that especially a kind of surface mount is welded in the tired surface mount shell fragment of elastoresistance that contacts for an assembly on the circuit board.
Prior art
The shell fragment that general electronics industry is used always is to be bent into the metal material punching press, again with surface mount technology (Surface Mount Technology, SMT) mode is welded on the circuit board, the shape of utilizing the material behavior of shell fragment own and being constituted is to produce certain elastic force, can be used as other assembly and circuit board electrically connects, ground connection (Grounding), screening effect (Shielding Effectiveness), dwindle the loop, reduce impedance, make the energy reduction and radiated emission is reduced, reach and suppress electromagnetic interference (EMI, ElectromagneticInterference), static discharge (Electrostatic Discharge) and meet Electro Magnetic Compatibility (EMC, cushioning effect when Electromagnetic Compatibility), even also can be used as contact.
Seeing also Figure 1 and Figure 2, is a kind of shell fragment 1100 structures of known techniques, includes the face of exerting pressure 110, first joint extension bent face 120, lever arm face 130, second joint extension bent face 140, solder side 150.
Use the surface mount machine, and with vacuum slot to the face of exerting pressure 110 absorption, and move to and award placement on the printed circuit board (PCB), and then shell fragment is welded on the printed circuit board (PCB) through solder furnace, and the usefulness that contacts conduction is done on the surface of the metal assembly 101 that contacts with desire with the face of exerting pressure 110.
But, because the shell fragment 1100 of known techniques has the structure of an opening, in the process of storage, carrying; often because of opening direction does not have any stopping, thus hook mutually through regular meeting between shell fragment and the shell fragment and form interference, be entangled with, and be difficult to free; therefore, the course of processing is rather required great effort and is time-consuming.
And, after shell fragment is fixed in printed circuit board (PCB), because the printed circuit board (PCB) arm of angle has a tether and hitches an inspection card (this inspection card is that offerings pipe detection record is used), in the process that circuit board moves, tether is because of rocking, and easily enter in the opening of this shell fragment, and cause the face of exerting pressure 110, first joint to extend the distortion that bent face 120, lever arm face 130 and second joint extend bent face 140.
In addition, again when moving printed circuit board (PCB) or placing part, also may be because of colliding shell fragment because of carelessness, cause shell fragment is imposed the thrust of a side and causes the face of exerting pressure 110, first joint to extend the distortion that bent face 120, the first lever arm face 130 and second joint extend bent face 140, even shell fragment drops, cause the part short circuit, and can't suppress electromagnetic interference.
In addition, see also shown in Figure 1, the table plane of face 110 is big inadequately owing to exert pressure, so cause contact impedance to increase, make the electric current can't be, mistake with the most smooth and easy circulation in moment, so cause moment to postpone, make the energy cumulative rises, and produce the electromagnetic interference noise of electromagnetic radiation, the interface equipment around going to disturb.
The surface plane of face 110 of exerting pressure is big inadequately, when this surface contacts with a metal assembly 101 surfaces, this shell fragment is under normal pressure, will make shell fragment cause deflection, cause contact not good, contact impedance increases, elastic fatigue, and then make imperfect earth, and can't suppress electromagnetic interference, problems such as static discharge.As mentioned above, when the shell fragment deflection, the whole performance of shell fragment and function forfeiture, even cause fracture and short circuit phenomenon.
Because it is slightly little that second joint extends the radian of bent face 140, thus bigger strength need be executed in the face of exerting pressure 110, otherwise can't reach the inhibitory action of Low ESR.But when being afraid of that the application of force is excessive, and cause phenomenon of rupture.
But if excessively downwards when forcing in the face 110 of exerting pressure, second joint extends bent face 140 and possibly can't recover original shape and be out of shape, and that is to say, along with the strength of exerting pressure is big little, also will influence the size of shell fragment distortion; And when the strength of exerting pressure is excessive, even may cause shell fragment can't recover fully, and and can not use, cause its effect forfeiture, invalid to suppressing electromagnetic interference, then the shell fragment that need renew, and cause the puzzlement of process time and cost increase.
Summary of the invention
The purpose of this utility model is for solving all deficiencies of above-mentioned known techniques, and provide a kind of Type B to design the tired surface mount shell fragment of astomous elastoresistance, as long as minimum contact impedance can be arranged thereby execute once the lightest strength, do not remove part and cause short circuit phenomenon around the contact and do not have skew, to improve the acceptance rate of product.
The utility model is achieved in that it is welded on the circuit board, and for assembly contact, this utility model has:
One face of exerting pressure, and this mask of exerting pressure has two sides;
Bent face is extended in one first joint, and this first joint is extended bent face one end and joined with one of face side of exerting pressure, and this first joint is extended the bending downwards of the bent face other end and extended to form the first lever arm face;
One second joint extends bent face, is formed by the crooked inflection of the above-mentioned first lever arm face, and extends the second lever arm face of a long plate shape;
Bent face is extended in one the 3rd joint, is formed by the crooked inflection of the above-mentioned second lever arm face, and extends the 3rd lever arm face of a long plate shape;
Bent face is extended in one the 4th joint, is formed by the crooked inflection of above-mentioned the 3rd lever arm face, and extends the solder side of a long plate shape;
One first extended surface, another side of an end and the above-mentioned face of exerting pressure is an acute angle and joins, and an end and second extended surface are an acute angle and join;
Mutual binding by said modules becomes a Type B structure.。
Because the utility model has adopted such structure, promptly increased by first extended surface, reached second extended surface that extends downwards, and second extended surface must be in contact with one another with solder side, therefore, exert pressure the table plane of face when contacting with another metal surface, this shell fragment can prevent that shell fragment from causing deflection to cause contacting not good situation and taking place under normal pressure.In addition, because shell fragment is movable back and forth up and down, skew about not having again, can not cause circuit or part short circuit phenomenon yet, can reduce contact impedance again, make the rapid decline of energy, noise radiation can't be emitted, and reach ground connection, cover, dwindle the loop and suppress electromagnetic interference, the effect of static discharge.
Another effect of the utility model is that owing to increase by the second lever arm face, the 3rd joint extension bent face, the 3rd lever arm face, so do not need excessive pressure, can reach it should produce effect, and also can not cause elastic fatigue, and can't recover original shape.Simultaneously, if do not force in when exerting pressure face very excessively downwards, the shape that also is easy to recover original and indeformable, can be along with the strength of exerting pressure is big little yet, and cause the size of shell fragment distortion, even can't recover fully, and can not use, so the shell fragment that need renew, and cause the puzzlement of man-hour and cost increase.In addition, the utility model needs only the compression distance with 0.7～1mm, can reach the required lowest impedance of specification, and reach ground connection, the effect of covering.And cover high-frequency electrical to reduce the distance and involve and dwindle the loop, energy is reduced.
Moreover the utility model has dwindled opening, gives airtight as far as possible; solved in the process of storage, carrying; often because of opening direction does not have any stopping, hook mutually and form interference so make between shell fragment and shell fragment through regular meeting, be difficult to free even require great effort again the puzzlement problem time-consuming producing.And dwindle opening also solved tether that above-mentioned offerings pipe detection record uses in the lump can be because of rocking in the opening that enters known shell fragment, and cause the problem generation of the distortion of shell fragment.
In addition, the utility model has increased the table plane of the face of exerting pressure, and contact impedance is reduced, make electric current in moment, flow through, and can not postpone moment with the most smooth and easy, energy is reduced, and can't produce the electromagnetic interference noise of electromagnetic radiation, the interface equipment around going to disturb.And, can not postpone moment, also will can not cause cumlative energy to radiate, screening effect is reduced.
Description of drawings
Fig. 1 sees stereogram for outside the known techniques;
Fig. 2 is that known techniques contacts force diagram with a metal assembly;
Fig. 3 sees stereogram for outside the utility model;
Fig. 4 is the not stressed preceding side diagrammatic sketch of the face of exerting pressure of the utility model;
Fig. 5 is the face of exerting pressure of the utility model side diagrammatic sketch after stressed.
The figure number explanation:
101 metal assemblies
The shell fragment of 1100 known techniques
110 faces of exerting pressure
Bent face is extended in 120 first joints
130 lever arm faces
140 second joints extend bent face
150 solders side
102 metal assemblies
D1 is a metal assembly and the contact direction of the face of exerting pressure of the utility model by a right and left side
G1 be metal assembly with the face of exerting pressure of the utility model from top to bottom contact direction
10 faces of exerting pressure
11 first extended surfaces
12 second extended surfaces
13 printed circuit board (PCB)s
Bent face is extended in 20 first joints
30 first lever arm faces
40 second joints extend bent face
50 second lever arm faces
Bent face is extended in 60 the 3rd joints
70 the 3rd lever arm faces
Bent face is extended in 80 the 4th joints
90 solders side
Embodiment
Introduce the utility model below in conjunction with the drawings and specific embodiments.
See also Fig. 3 and shown in Figure 4, the utility model mainly is made of the face of exerting pressure 10, first joint extension bent face 20, the first lever arm face 30, second joint extension bent face 40, the second lever arm face 50, the 3rd joint extension bent face 60, the 3rd active face 70, the 4th joint extension bent face 80, solder side 90, first extended surface 11, second extended surface 12.
The face of exerting pressure 10 that is long plate shape is bent downwardly first joint that forms an arc by right-hand member and extends bent face 20, first joint extension bent face 20 is taken advantage of a situation and is connected a lever arm face 30, form half circular-arc second joint by the crooked inflection in lever arm face 30 lower ends and extend bent face 40, and connect the second lever arm face 50 of a long plate shape, after the second lever arm face 50 is bent downwardly inflection again, form half the 3rd circular-arc joint in bent part and extend bent face 60, the 3rd lever arm face 70 that bent face 60 connects a long plate shape is again extended in the 3rd joint, after the 3rd lever arm face 70 is bent downwardly inflection, bent face 80 is extended in the 4th joint that forms a semicircular arc, the solder side 90 that bent face 80 connects a long plate shape is extended in the 4th joint, and this solder side system welds mutually with printed circuit board (PCB) 13.The left end of face 10 of exerting pressure is bent downwardly and extends first extended surface 11, and the slightly recessed again folding of this first extended surface 11 extends to form second extended surface 12.
As mentioned above, in order to solve that known shell fragment has an opening often to make to hook mutually between shell fragment and the shell fragment and the problem that forms interference, the utility model is provided with first extended surface 11 and second extended surface 12 at the left end of the face of exerting pressure, the purpose of this first extended surface 11 and second extended surface 12 is just being dwindled opening, therefore, in the process of storage, carrying, the situation of hooking each other between shell fragment and the shell fragment just can be avoided.In addition, also can avoid known shell fragment to be entered opening, cause the situation of shell fragment distortion to take place by tether.
As shown in Figures 3 and 4, the utility model has also increased the table plane of the face of exerting pressure 10, and its purpose is exactly contact impedance is reduced, make electric current moment with the most smooth and easy circulation mistake, can not form the generation that moment postpones, use the reduction electromagnetic interference noise.
See also shown in Figure 5, when the face of exerting pressure 10 of this shell fragment from top to bottom prolong the G1 direction with another metal assembly 102 surfaces or by the right side left side prolong the D1 direction when contacting, can impose a downward strength (this strength is identical with the G1 direction) to the face of exerting pressure 10, strength will make first extended surface 11 and second extended surface 12 extend downwards downwards, and second extended surface 12 is in contact with one another with solder side 90.Therefore, first extended surface 11 and second extended surface 12 can also prevent that shell fragment from causing deflection, avoid taking place because of deflection causes contacting not good situation.
See also shown in Figure 4ly, the utility model is provided with the second lever arm face 50, the 3rd joint and extends bent face 60 and the 3rd lever arm face 70, makes this creation more can not cause the phenomenon of elastic fatigue.Therefore, the design needs only the compression distance with 0.7～1mm, can reach the required lowest impedance of specification, and the effect that reaches ground connection, covers.Reducing the distance also has the high-frequency electrical of covering to involve to dwindle the advantage that the loop makes the energy reduction.
As mentioned above, owing to be provided with first extended surface 11 and second extended surface 12 makes this shell fragment when contacting with a metal assembly A2, has only up and down activity back and forth, skew does not make circuit or part short circuit phenomenon about can not producing, therefore, the utility model can be applied flexibly on printed circuit board (PCB), saving man-hour, and reach the cost benefit of the best, the increase production capacity, productivity ratio improves, increase profit, and promote and breakthrough technical ability, to solve Electromagnetic Compatibility, electromagnetic interference (EMI), the problem of Electrostatic Discharge etc.
In addition, this creation system replaces original phosphor bronze (Phosphor Bronze) and stainless steel substrates (Stainless steel) material with the beryllium copper material, provide by this that high elastoresistance is tired, high-tension intensity, electroplate can select, anticorrosive, moisture-resistant gas and the good shell fragment of ultraviolet ray, good conductivity and weldability.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420066291 CN2728167Y (en) | 2004-06-28 | 2004-06-28 | Surface Adhesive Shrapnel Against Elastic Fatigue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420066291 CN2728167Y (en) | 2004-06-28 | 2004-06-28 | Surface Adhesive Shrapnel Against Elastic Fatigue |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2728167Y true CN2728167Y (en) | 2005-09-21 |
Family
ID=35044171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420066291 Expired - Fee Related CN2728167Y (en) | 2004-06-28 | 2004-06-28 | Surface Adhesive Shrapnel Against Elastic Fatigue |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2728167Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101895019B (en) * | 2009-05-18 | 2012-10-17 | 深圳富泰宏精密工业有限公司 | Elastic piece structure |
| TWI404490B (en) * | 2009-06-19 | 2013-08-01 | Chi Mei Comm Systems Inc | Elastic sheet structure |
-
2004
- 2004-06-28 CN CN 200420066291 patent/CN2728167Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101895019B (en) * | 2009-05-18 | 2012-10-17 | 深圳富泰宏精密工业有限公司 | Elastic piece structure |
| TWI404490B (en) * | 2009-06-19 | 2013-08-01 | Chi Mei Comm Systems Inc | Elastic sheet structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENGDE BAMBOO SCIENCE AND TECHNOLOGY CO., LTD. Free format text: FORMER NAME OR ADDRESS: DEZHU TRADE STOCK CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: Taipei County Sijhih city new station five road 1 No. 75 1 floor 2, zip: Patentee after: Cheng Fengzao Address before: Building 13, building 49, No. three, Minsheng East Road, Zhongshan District, Taiwan, Taipei: Patentee before: Tex Chu Trading Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050921 Termination date: 20110628 |