CN100423370C - Electronic equipment provided with wiring board into which press-fit terminals are press-fitted - Google Patents
Electronic equipment provided with wiring board into which press-fit terminals are press-fitted Download PDFInfo
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- CN100423370C CN100423370C CNB2006100721119A CN200610072111A CN100423370C CN 100423370 C CN100423370 C CN 100423370C CN B2006100721119 A CNB2006100721119 A CN B2006100721119A CN 200610072111 A CN200610072111 A CN 200610072111A CN 100423370 C CN100423370 C CN 100423370C
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Abstract
This invention relates to a press-fit joining wiring board in an electronic control device used under high temperature environment inside an automobile. In order to suppress the occurrence of damage on a press-fit joining wiring board, a peak value of stress generated on the board in the case of a press-fitting a press-fit terminal into a through-hole is reduced so that it can not exceed the design standard value of the board. In the press-fit terminal in which a body part, retaining part, introducing part and forward end part are integrally formed, a cross-sectional area of the introducing part is reduced to be smaller than that of the retaining part, so that an intensity of the elastic force of the introducing part is decreased to be lower than that of the elastic force of the retaining part. Alternatively, on the wiring board, elastic material is filled into resin for combining sheet-like base material of the board so as to relieve an intensity of stress generated on the board itself.
Description
Technical field
The present invention relates to employed press-fit terminal in the electronic equipment and be pressed into the interference fit that keeps this terminal engage wiring substrate, under particularly relating in the through hole set on the wiring substrate that press-fit terminal is pressed on the vehicles such as being equipped on automobile, under hot environment in the employed electronic installation with the situation of carrying out electrical engagement, suppress the press-fit terminal that terminal is pressed into the influence of wiring substrate and engage wiring substrate with interference fit.
Background technology
In the past, on vehicles such as automobile, be equipped with the electronic-controlled installation (ECU) that each equipment of engine set in the car etc. is controlled.This ECU will be integrated in the various controlled function of equipment in the unit, be equipped with a plurality of ECU in vehicle.Each ECU has: comprise according to the control circuit part microcomputer that is moved by the electronic information that each transducer detected etc., that carry out theoretic control computing, and the actuator that controlling object is driven according to operation result etc. carries out the motor circuit part to the electric power control of outside.This vehicle mounted ECU for example opens in the 2000-323848 communique the spy and is disclosed.
In this vehicle mounted ECU in the past, control circuit partly is formed on the control basal plate, and motor circuit partly is built in the module.In the process of the assembling of vehicle mounted ECU, when the assembling of control basal plate in ECU, the terminal for connecting that uprightly is arranged on the module that is built-in with motor circuit is inserted in the through hole that is located on the control basal plate.Then, terminal for connecting is welded with wait conductive component that is formed in this through hole by plating.By this method, with when wiring graph on being formed on control basal plate electrically is connected, control basal plate can be fixed in the resin-case at terminal for connecting.But, because adopt this structure, so its assembling operation more complicated.
Therefore, in its assembling operation, as can when carrying out the assembling of control basal plate and terminal for connecting reliably, seeking the minimizing of the number of working processes, and the method that connects of the substrate of realizing can not causing the deterioration of operating environment, proposed in terminal for connecting, to use the scheme of press-fit terminal.In the way that the substrate that this press-fit terminal is used in ECU connects, for example, open in the flat 10-208798 communique open the spy.
Connect in order to carry out this substrate simply, on the control basal plate in being assembled into ECU, a plurality of through holes are set prescribed distance at interval.On the inner peripheral surface of each through hole, be coated with conductive component.On the other hand, corresponding each through hole of press-fit terminal is prescribed distance ground at interval, and one end edge is buried upright being located in the housing.For this press-fit terminal, for example can use the pin hole type.Therefore, press-fit terminal can be pressed in the through hole from the top, engage by interference fit and carry out the substrate connection.
At this, except above-mentioned press-fit terminal, for example, as disclosed in fair 6-28174 communique of spy etc., when having proposed in being pressed into through hole, make the uniform press-fit terminal of elastic deformation amount.In this press-fit terminal, make the pressure continuous part longer than the degree of depth of through hole, in the time of in press-fit terminal is pressed into through hole, the high part of rigidity that forms on the top of press-fit terminal just is on the position in the through hole outside.
On the other hand,, consider, require to have less coefficient of thermal expansion from the connection reliability aspect for the control basal plate that is equipped on the above-mentioned electronic-controlled installation.In the past, in order to adapt to this requirement, developed ceramic substrate, ceramic-resin substrate, fiber composite substrate etc., coefficient of thermal expansion is little, the substrate of good two aspects of processability does not still exist but can satisfy simultaneously.Therefore, by will carry out the resulting prepreg of epoxy resin impregnation dried (prepreg) layer to plate shape substrates, being shaped in its surperficial metal forming heating and pressurizing with mounting forms the plywood of integrated metallized foils, be used as substrate and widely use.
Therefore, for example, open in the flat 8-309920 communique disclosedly as the spy, proposed, the spring rate of resin is reduced, suppress the laminated base plate of thermal expansion of the face direction of laminated plate by in epoxy resin, adding the pliability material.In this laminated base plate, contain microparticle at resin, absorb and relax the stress that in resin, produces because of thermal expansion, so that at high temperature with caoutchouc elasticity, even and in the environment of temperature change fierceness, metal forming can not peeled off because of the thermal expansion of substrate yet.Whereby, the thermal expansion with the in-plane of laminated base plate suppresses very for a short time.
, when press-fit terminal is pressed into through hole set on the control basal plate, the opening portion of set through hole on control basal plate, the stress that produces sometimes when being pressed into by press-fit terminal is concentrated the trickle damage that causes.Usually, in control basal plate, make a plurality of combinations in length and breadth that glass fibre be arranged, contain the sheet material coincidence that is soaked with epoxy resin, and the substrate of the laminated construction of compacting curing is widely used.Therefore, when press-fit terminal is pressed into, there is very big masterpiece to be used for the real estate direction, the damage that causes near the periphery of via openings part generation to cause because of wood destructions such as peeling off of the sheet material of lamination at the opening portion of through hole.
But, the electronic-controlled installation that is equipped with in the engine room as automobile etc., under the environment temperature high temperature of bad working environment-for example, many wet environment, the easy moisture absorption that becomes of damaged portion in control basal plate, the result has produced the stripping of the copper ion of electric conducting material, and the insulating properties of substrate constantly worsens such problem.Particularly recently, in order on electronic-controlled installation, to obtain diversified controlled function, so wish to realize the densification of control basal plate, even miniaturization, increase the position that is electrically connected of control basal plate, distance between through hole is reduced, therefore quickened the deterioration of the insulating properties of substrate, this has become very big problem.
In addition, particularly, the control basal plate for electronic-controlled installation set in the fierce engine room of vibration etc. in order to bear this vibration, also is necessary to strengthen the confining force that is formed by press-fit terminal.But, be pressed into surplus if strengthen for the confining force that improves press-fit terminal, then make the substrate burden when being pressed into become big on the contrary, cause damaging.Otherwise, in order to reduce this burden, be pressed into surplus by reducing this, can suppress burden (load) and produce, but this will produce the such problem of confining force decline that causes press-fit terminal.
Summary of the invention
Therefore, the object of the present invention is to provide a kind ofly can be applicable to usually used control basal plate, the burden in the time of can suppressing to be pressed into takes place, and keeps the size of confining force after being pressed into, than the high press-fit terminal of connection reliability before so far.
And then, the present invention also aims to provide a kind of press-fit terminal is pressed into for example under hot environment through hole set on the wiring substrate in the employed electronic-controlled installation, with the situation of carrying out electrical engagement under, when terminal is pressed into, can absorb external stress, engage wiring substrate with the interference fit of the burden that suppresses to produce in the substrate.In addition, also provide a kind of press-fit terminal that can use same as before in the past, and substrate can be absorbed by the base plate structure of terminal to the stress of substrate generation.
In order to solve above problem, in the present invention, in being pressed into the press-fit terminal that remains in the through hole of being located on the wiring substrate, have pressure retaining parts and introduction part; Aforementioned pressure maintaining part and aforementioned introduction part have peristome, and this peristome extends along the axial centre of aforementioned terminal, the sectional area ratio aforementioned pressure maintaining part of aforementioned introduction part little; The aforementioned pressure maintaining part has the elastic force that becomes confining force when being pressed into aforementioned through-hole; Aforementioned introduction part has than the elastic force a little less than the elastic force of aforementioned pressure maintaining part.
In addition, the present invention is possessing the wiring substrate with through hole and is being pressed in the electronic equipment that remains in the press-fit terminal in this through hole, and aforementioned press-fit terminal has pressure retaining parts and introduction part;
Aforementioned pressure maintaining part and aforementioned introduction part have peristome, and this peristome extends along the axial centre of aforementioned terminal, the sectional area ratio aforementioned pressure maintaining part of aforementioned introduction part little;
The aforementioned pressure maintaining part has the elastic force that becomes confining force when being pressed into aforementioned through-hole;
Aforementioned introduction part has than the elastic force a little less than the elastic force of aforementioned pressure maintaining part.
Aforementioned introduction part more carefully is formed towards front end, and then, have at the direction of principal axis center of aforementioned terminal extend long peristome, when being pressed into, on aforementioned pressure maintaining part and aforementioned introduction part, produce elastic force.
The sectional area of the sectional area ratio aforementioned pressure maintaining part of aforementioned introduction part is little, and then the aforementioned peristome of aforementioned introduction part is formed longlyer towards aforementioned front end edge direction of principal axis, adjusts the size of the sectional area of aforementioned introduction part whereby.
Aforementioned peristome forms narrowlyer in the zone corresponding to the aforementioned pressure maintaining part, form in zone corresponding to aforementioned introduction part broad, aforementioned areas in the aforementioned peristome corresponding to the aforementioned pressure maintaining part, decline for the elastic force that compensates the aforementioned pressure maintaining part that reduces to cause because of the aforementioned sectional area that makes aforementioned introduction part is formed narrowlyer.
Aforementioned wiring substrate is the substrate of lamination, by epoxy resin laminate compound glass fibre sheet material, printed wiring on this surface.
In addition,, form the through hole that has flat substrates and be pressed into the maintenance press-fit terminal, and in resin, contain the interference fit joint wiring substrate of elastomeric material in conjunction with aforementioned flat substrates according to wiring substrate of the present invention.
In addition, in electronic equipment of the present invention, be configured to the structure of the wiring substrate with the through hole that possesses flat substrates and be pressed into the maintenance press-fit terminal, this wiring substrate is configured to the substrate that contains elastomeric material in the resin in conjunction with aforementioned flat substrates.
It is the pliability particle that aforementioned interference fit engages the aforementioned elastic that is contained in the wiring substrate, and is dispersed in the resin of substrate, and this pliability particle is any one or its multiple the combining in acrylic rubber, silicon rubber, the acrylonitrile-butadiene rubber.
Aforementioned elastic is filled in the top layer part of aforesaid base plate.
The inner peripheral surface of the aforementioned through-hole in the aforementioned wiring substrate is made of the metal harder than copper.
Description of drawings
Figure 1A to 1C is the figure that the state of the stress that takes place in the substrate when through hole is pressed at press-fit terminal is described.
Fig. 2 A to 2C is the figure of explanation according to the example of press-fit terminal of the present invention.
Fig. 3 A to 3C is the figure of explanation according to another example of press-fit terminal of the present invention.
Fig. 4 is that the curve chart of load with respect to the variation of the insertion stroke of press-fit terminal inserted in more in the past situation and the situation of this example, expression.
Fig. 5 is at destroying the relation of length with respect to compression stress, the expression embodiment and the curve chart of the comparison of example in the past.
Fig. 6 is the three-dimensional exploded view of the lift-launch situation of the electronic unit in the vehicle mounted electronic-controlled installation that illustrates in the past.
Fig. 7 A and 7B are the figure that explanation is pressed into press-fit terminal the formation in the through hole of the wiring substrate that is equipped with electronic unit.
Fig. 8 A to 8C is the figure that the shape of press-fit terminal in the past is described.
Fig. 9 is the figure that the explanation press-fit terminal is pressed into the state behind the through hole of wiring substrate.
Embodiment
It is following that the present invention will be described with reference to accompanying drawing.
, at first, do not specifically describe by the effect that the present invention brought for clear and definite using the formation that employed general press-fit terminal and interference fit engage wiring substrate in the present invention, the electronic equipment.
Here, the assembling of the summary of relevant electronic-controlled installation according to prior art constitutes, and is illustrated among Fig. 6.As the major part of this electronic-controlled installation 1, be housed in the connection body resin-case 2 that is formed with the connection shell.Control is concentrated with connector 4,5 with power with connector 3 and is provided on the side that is connected body resin-case 2.Whereby, form and can be only carry out the formation that is connected with external electrical to electronic-controlled installation 1 from a direction.
In connecting body resin-case 2, contain control circuit part and motor circuit part.Partly comprise a plurality of drive electronic parts 6,7 as motor circuit, be equipped with in the module portion of these drive electronic parts, be equiped with terminal for connecting 8,9.The control basal plate 10 that this terminal for connecting 8,9 is used for being comprised with the control circuit part is electrically connected.Here, control basal plate 10 is installed in the upper face side that connects body resin-case 2.In the end of this substrate 10, be provided with a plurality of through holes 11,12, behind terminal for connecting 8,9 insertion through holes 11,12, control circuit and motor circuit are electrically connected by welding etc.A plurality of control electronic units 13,14,15 are installed on control basal plate 10.And, control basal plate 10 is installed in connect body resin-case 2 on the rear flank, be coated with lid 16 above it.On the other hand, at the bottom surface side that connects body resin-case 2, the radiator 17 that the heating of the drive electronic parts 6,7 of motor circuit is cooled off usefulness is installed.On lid 16 and radiator 17 and the junction surface that is connected between the body resin-case 2, clamp the seal 18,19 that waterproof is used.
As previously discussed, in vehicle mounted electronic-controlled installation in the past, in the process of the assembling of electronic-controlled installation, after terminal for connecting 8,9 on uprightly being arranged at the module that is built-in with motor circuit is inserted in the through hole 11,12 that is located on the control basal plate 10, terminal for connecting 8,9 is welded with wait conductive component that is formed in the through hole 11,12 by plating.Thus, at terminal for connecting 8,9 and when being formed on wiring graph on the control basal plate 10 and being electrically connected, control basal plate 10 is fixed on and connects in the body resin-case 2.
But, connect by welding, not only to carry out weld job, but also operation such as be necessary to clean, therefore not only the number of working processes increases, and operating environment worsens.In addition, with welding material from aspect the SnPb63 Pb-free solderization in the past, under the situation of the terminal of connector, the technical problem of soldering is many, and has increased management man-hour.
Here, in order to carry out being connected of terminal for connecting and control basal plate reliably, in above-mentioned electronic-controlled installation in the past, though can after terminal for connecting being inserted in the through hole that is formed on the control basal plate, weld, but when through hole is welded, because the hole of a side opposite with the terminal for connecting inserting side is clogged by scolding tin, be difficult to confirm whether through hole contacts with terminal for connecting, and bad connection is difficult for being found so become.In addition, because terminal for connecting and control basal plate are tightly fixed, for example, the vibration that the housing of actuator is installed can directly be delivered to control basal plate, brings harmful effect for the electronic unit that is equipped on control basal plate.
Therefore, as can when carry out being connected of control basal plate and terminal for connecting reliably, seeking the number of working processes and reduce, and the countermeasure that realizes can not causing the substrate of the deterioration of operating environment to connect, in terminal for connecting, used press-fit terminal.For this substrate is connected the situation that applies to electronic-controlled installation, in Fig. 7 A and 7B, represented the state that is connected of control basal plate and terminal in this electronic-controlled installation.
Fig. 7 A illustrates the vertical section of the through hole of control basal plate.Used in the control basal plate 10 here and the electronic-controlled installation 1 shown in Fig. 6 is identical, is the part relevant with the through hole 11,12 of this control basal plate 10.In Fig. 7 A, use H
1, H
2Label represent these through holes.Though in fact be provided with a lot of through holes, show two here typically.Each through hole is being arranged with being spaced apart spacing p.And, from through hole H
1, H
2The wall of inner peripheral surface near the hole opening on control basal plate 10 surfaces, be provided with the conductive component 18 that forms by copper facing etc.Represent through-hole aperture with w.
On the other hand, in Fig. 7 B, expressed edge and buried the upright press-fit terminal P that is located in the terminal for connecting housing
1, P
2These press-fit terminals uprightly are provided with by the number of through hole set on the control basal plate 10, but in Fig. 7 B, with the through hole H shown in Fig. 7 A
1, H
2Two press-fit terminal P are shown accordingly
1, P
2, and uprightly be arranged on corresponding position with the spacing p of through hole.Press-fit terminal P
1, P
2Length be adjusted to and can make control basal plate 10 in the length of housing internal fixation at assigned position.The being pressed into preceding Breadth Maximum of representing press-fit terminal with W.
The end view of the details of expression pin hole type press-fit terminal has been shown in Fig. 8 A here.In Fig. 8 A, represent on the contrary with the direction of the press-fit terminal shown in Fig. 7 B.Thereby, the press-fit terminal shown in Fig. 8 A become from above be pressed into the through hole that is arranged on the control basal plate.
Press-fit terminal forms by the metallic plate that is made of conductive materials such as copper alloys is carried out punch process, forms one one butt.Press-fit terminal has axially formed main part, pressure retaining parts, introduction part and leading section.Form elastic portion when being pressed into by pressure retaining parts and introduction part, main part in the example of Fig. 7 B, has constituted and has been used for inlaying the base end part that buries, is erected at terminal for connecting.Introduction part is more carefully formed so that when press-fit terminal is pressed into through hole, and its front end is easy to insert.
Along the longitudinally at the axle center of press-fit terminal, be provided with that punching press with metallic plate forms simultaneously and the peristome that connects.By this peristome, form pressure retaining parts and introduction part, the width W of the position of being represented by the A-A line of pressure retaining parts is the wideest in terminal.The width forward end of introduction part narrows down gradually.
In Fig. 8 B, express cross section, and in Fig. 8 C, express cross section as the B-B line place of the part of introduction part as the A-A line place of the part of pressure retaining parts.The size of these sectional areas is identical in pressure retaining parts and introduction part.
When the press-fit terminal shown in Fig. 8 A is pressed into through hole, if press-fit terminal descends from the top, perhaps, and by control basal plate is upwards pushed away, the open circumferential of contact through hole and imposed load at first near the B-B line of introduction part, and produce strain.And then if continue imposed load, then pressure retaining parts is pressed in the through hole.Here, press-fit terminal is (W-w) to the surplus that is pressed into of through hole.
Here, in Fig. 9, represented the press-fit terminal P shown in Fig. 7 B
1, P
2Be pressed into the through hole H of the control basal plate 10 shown in Fig. 7 A
1, H
2In state.The pressure retaining parts of the press-fit terminal shown in Fig. 8 A as shown in Figure 9, is pressed in the through hole fully, and control basal plate 10 is maintained at the position near the terminal for connecting module, and control basal plate is fixed, and, pressure retaining parts and through hole H
1, H
2In electric conducting material 18 closely contact and forming be electrically connected.
But, when press-fit terminal is pressed into the through hole that is located on the control basal plate, the via openings part of the control basal plate shown in the circular lines in Fig. 9 sometimes, the stress that produces when being pressed into because of press-fit terminal is concentrated the trickle damage that causes.Even in general electronic equipment, the joint method that is undertaken by press-fit terminal also is widely used, but in this case, needs the diameter tolerance of the through hole of key-point management substrate, so that terminal is pressed into.But, even in this case, because terminal need be pressed into, to obtain the confining force with substrate, so can bring unnecessary load to substrate.Therefore, when being pressed into of press-fit terminal, have very big power to the real estate directive effect at the opening portion of through hole, and near the damage that generation is caused by wood destructions such as peeling off of the sheet material of lamination the periphery of via openings part.
As described above, during employed interference fit according to prior art engages in the electronic-controlled installation, exist when press-fit terminal is pressed into the through hole that is located on the wiring substrate, bring the such defective of unnecessary load can for wiring substrate itself.
Therefore, in the present invention, the shape of employed press-fit terminal was studied during interference fit engaged, develop and a kind ofly can be applicable to used usually wiring substrate, can suppress burden that terminal produces when wiring substrate is pressed into, and can after being pressed into, keep confining force size, compare so far before the higher press-fit terminal of connection reliability.
Next describe with reference to the example of accompanying drawing press-fit terminal of the present invention.
Thus, at first, before the example to press-fit terminal of the present invention describes, will finish among consideration method representation Figure 1A to 1C of this press-fit terminal.Figure 1A represents the press-fit terminal P of the prior art shown in Fig. 8 A is pressed into the through hole H of the control basal plate 10 shown in Fig. 7 A
1Or H
2Situation.In Figure 1A, in order to simplify drawing, press-fit terminal P is expressed as simple shape, and has omitted and be in through hole H
1Or H
2The expression of interior conductive component 18.
Figure 1A expresses press-fit terminal P is pressed into situation in the through hole H.In press-fit terminal P is inserted into through hole H, when introduction part touches the opening circumference of through hole H, will inserts stroke and be made as 0mm.Then, to press-fit terminal P reinforcing, when beginning to be pressed in the through hole H, will insert stroke and be made as 0.6mm via introduction part, pressure retaining parts.Though not shown, afterwards, proceed to be pressed into action, it is further elongated to insert stroke.On this is pressed into terminal in the action, be loaded certain pushing force.
In Figure 1B, represented when as shown in Figure 1A, press-fit terminal P being pressed into through hole H, to be added in the variation of the load on the control basal plate 10.Transverse axis represents to insert stroke (mm), and the longitudinal axis is represented load (N).The curve of load shown in the solid line is represented the variation that is pressed into the load in the action of the press-fit terminal P shown in Figure 1A.Near insertion stroke 0.6mm, load becomes peak value as seen from the figure.
In Fig. 1 C, with this curve of load accordingly, the change list of the stress that will take place at the opening circumference of the through hole H of substrate is shown in the stress curve.Transverse axis is to insert stroke (mm), and the longitudinal axis is that stress (N/mm takes place
2).As seeing from this stress curve, the size that stress takes place becomes maximum near inserting stroke 0.6mm, and descends along with being pressed into proceeding of action.Here, if try to compare, then shown in Fig. 1 C, insert the design basis value that near the maximum of stroke 0.6mm surpasses this substrate with the design basis value of substrate.Therefore, can think, excessive stress take place, make the laminated construction of this circumference destroyed at the opening circumference of being located at the through hole on the substrate.
Therefore,, can not damage at the opening circumference of through hole H for when being pressed into press-fit terminal P in the through hole H, just passable as long as the maximum of this stress curve is no more than substrate design basis value.Hence one can see that, as shown in Figure 1B, with respect to the curve with peaked solid line that stress takes place, as long as make the shape that can make load become the press-fit terminal of the stress curve that is represented by dotted lines with the variation of inserting stroke.
Based on above understanding, in the press-fit terminal of this example, form to have and be reduced in the stress that introduction part when being pressed into imposes on substrate, keep or strengthen the shape of two sections elastic characteristic of confining force with pressure retaining parts.Followingly the press-fit terminal of this example is elaborated with reference to Fig. 2 and Fig. 3.
The side view of the press-fit terminal that the elastic force of the elastic force specific pressure maintaining part at identical, the introduction part place of the elastic force when Fig. 2 A has represented being pressed into of pressure retaining parts place and the pin hole type press-fit terminal P shown in Fig. 8 A is little.Press-fit terminal shown in Fig. 2 A also with Fig. 8 A in the same, by the metallic plate punch process is formed its integral body.The thickness of press-fit terminal P is taken as uniformly.
Press-fit terminal, punch process has main part, pressure retaining parts, introduction part and leading section integratedly, and axially is provided with the peristome that connects more longways in central authorities, and this situation with Fig. 8 A is the same.The sectional area at the A-A line place of pressure retaining parts is as shown in Fig. 2 B, and the sectional area of the pressure retaining parts of the press-fit terminal shown in the elastic force of pressure retaining parts and Fig. 8 A is same, is identical with the sectional area shown in Fig. 8 B.
In the press-fit terminal P shown in Fig. 2 A, for a little a little less than the elastic force of the elastic force specific pressure maintaining part that makes introduction part, with the length of the long peristome axially that connects, than extending with peristome forward end set on the terminal in the past shown in the dotted line.By forming such peristome, the situation identical with the sectional area of pressure retaining parts and introduction part in the press-fit terminal in the past of Fig. 8 A is relative, in the press-fit terminal of this example of Fig. 2 A, shown in Fig. 2 C, the sectional area of the sectional area ratio pressure retaining parts at the B-B line place of introduction part is little.
So, according to the press-fit terminal of this example of Fig. 2 A, the sectional area of the sectional area ratio pressure retaining parts by making introduction part is narrow, and the elastic force of introduction part is weakened, and can reduce the stress maximum in the generation stress curve shown in Fig. 1 C.Situation with the press-fit terminal of this example is embodiment 1, and its curve of load is illustrated among Fig. 4.With compare as can be known according to the curve of load of situation in the past, can reduce the load that causes by introduction part the damage of the substrate in the time of can suppressing to be pressed into takes place.And the elastic force of pressure retaining parts is formed the surplus that is pressed into of the press-fit terminal that need not change prior art, just can guarantee necessary confining force.
Next, with reference to Fig. 3, another example of the peristome shape that the relevant elastic force that makes introduction part is weakened describes.In the press-fit terminal shown in Fig. 2 A, being pressed into surplus keeps with constant in the past, the length forward end lengthening of the long peristome axially by making perforation, weaken the elastic force of introduction part, and in the example of Fig. 3, to be pressed into the surplus this point identical with the situation of aforesaid example not changing, but the length of the peristome of the length of long peristome axially in also keeping in the past is constant, and working hard in shape to change the elastic force of introduction part at peristome.
Employed press-fit terminal P in another example shown in Fig. 3 A, shape is identical with the press-fit terminal P of the pin hole type shown in Fig. 8 A as a whole, by the metallic plate punch process is formed its integral body.The thickness of press-fit terminal P is uniform.
This press-fit terminal P, integrated punching has been processed to form main part, pressure retaining parts, introduction part and leading section, and is provided with the peristome that axially connects more longways in central authorities, and the length of this peristome is identical with the situation of Fig. 8 A.Moreover in Fig. 3 A, the peristome in dotted in the past.The sectional area at the A-A line place of pressure retaining parts is illustrated among Fig. 3 B, and the sectional area at the B-B line place of introduction part is illustrated among Fig. 3 C.
In the press-fit terminal P of Fig. 3 A, a little less than the elastic force that makes introduction part elastic force than the pressure retaining parts in the past, as shown in Fig. 3 C, the narrowed width of the part by making introduction part, the sectional area of this part B-B line in reducing in the past.But if make the narrowed width of introduction part reduce its sectional area, with the elastic force that obtains stipulating, then the shape of peristome has formed the consequence that makes peristome be expanded to the part zone of pressure retaining parts as shown in Fig. 3 A.So, if the sectional area at the A-A line place of pressure retaining parts still with in the past in this sectional area big or small identical of pressure retaining parts, then might can't bring into play confining force originally.
Therefore, in the press-fit terminal P of another example shown in Fig. 3 A, the compensation as this confining force is descended narrows down the aperture area of the peristome of pressure retaining parts, so that the sectional area ratio of A-A line this sectional area in the past is big.This situation is indicated among Fig. 3 B.
So, if with the press-fit terminal of this another example of Fig. 3 A, then the sectional area of introduction part weakens the elastic force of introduction part thus less than the sectional area of pressure retaining parts, can reduce the stress maximum in the generation stress curve shown in Fig. 1 C.The curve of load of the situation of the press-fit terminal of this another example is illustrated among Fig. 4 as embodiment 2.Compare as can be known with the curve of load in the past, the load that is caused by introduction part takes place and can reduce, and the damage of the substrate can suppress to be pressed into the time.And for the elastic force of maintaining part, the sectional area by the intensified pressure maintaining part can not change the surplus ground that is pressed into of press-fit terminal in the past and guarantee confining force with the elastic force that compensation descends.
Though in the press-fit terminal of above explanation, situation with the pin hole type is that example is illustrated, but other forms, for example, in the press-fit terminal of Z type, active type too, can make the weak two sections such elastic characteristic of elastic force of its elastic force specific pressure maintaining part, the damage of the substrate that takes place when terminal being pressed into through hole with reduction with the introduction part of making.
In addition, though in the press-fit terminal of above-mentioned example, be that the shape of axially extending more longways in central authorities a peristome is changed, adjust the sectional area of introduction part, weaken the elastic force of introduction part thus, but also can with opening portion that elastic force takes place in pressure retaining parts and introduction part from, even corresponding introduction part is provided with two peristomes, also can weaken the elastic force of introduction part.
And then, though in press-fit terminal according to above-mentioned example, because used the terminal that forms by the metallic plate punch process, so terminal integral body has equal thickness, but the utilization that makes it to have the method for two sections weak such elastic characteristics of the elastic force of elastic force specific pressure maintaining part of the introduction part of making is not necessarily limited to the occasion of uniform thickness.Because of the uniform cause of thickness,,, also can realize by the thickness of change terminal as the way of the sectional area that changes introduction part and pressure retaining parts so, can make the elastic force change of introduction part by adjusting the opening shape of peristome.Can enumerate pressure processing to this or to the methods such as plating of suitable part.
More than, expressed the example of press-fit terminal of the present invention, illustrated by the structure of press-fit terminal and studied, inhibition engages the situation of the stress generation of wiring substrate to interference fit, but, below, with reference to accompanying drawing, the interference fit joint wiring substrate stress that takes place on the wiring substrate working hard on the formation that engages wiring substrate itself in interference fit, relaxing, of the present invention describes.
Engage wiring substrate in interference fit according to the present invention, can be formed in press-fit terminal is pressed in the through hole set on the wiring substrate in the electronic-controlled installation with under the situation of carrying out electrical engagement, external stress in the time of can absorbing this terminal and be pressed into, and the interference fit that suppresses the burden that takes place in the substrate engages wiring substrate.In addition, also provide a kind of press-fit terminal that can still use in the past, but and the board structure that is subjected to of plate also from the stress of terminal.
When being assembled into control basal plate in the electronic-controlled installation, when press-fit terminal is pressed into the through hole that is arranged on the control basal plate, address before the fact of the concentrated trickle damage that causes of stress the when generation of the inlet portion branch of the through hole on being arranged on control basal plate is pressed into because of press-fit terminal.Its situation is illustrated among Fig. 9, at the through hole H of the control basal plate 10 of being surrounded by the circular lines among the figure
1, H
2Peristome periphery place, this damage takes place.
In general electronic equipment, also use the method that engages by press-fit terminal widely.In this case too, the diameter tolerance of the through hole of key-point management substrate so that terminal is pressed into, but still can obtain confining force with substrate because of being pressed into terminal, and bring unnecessary load to substrate, the damage when being pressed into.
Usually, because in control basal plate, adopted to make and a plurality ofly made up glass fibre in length and breadth and contain the laminated construction that the overlapping and compacting of the sheet material that is soaked with epoxy resin is solidified, so when press-fit terminal is pressed into, along the real estate directive effect very big power is arranged in its open circumferential portion, therefore, the damage that causes because of wood destructions such as peeling off of the sheet material of institute's lamination takes place near bore periphery sometimes.And then in order to strengthen the fixedly maintenance of press-fit terminal, under the situation that adopts the flexible method that is pressed into reinforcement press-fit terminals such as surplus more greatly, it is more remarkable that the damage when being pressed into becomes.
But the electronic-controlled installation that is equipped with in engine room as automobile etc. is that the damage when being pressed into can influence substrate properties under the conditions such as high temperature, many wet and vibration fiercenesses in the environment temperature of bad working environment-for example.If have the damage when being pressed on control basal plate, when control basal plate was in high temperature, many wet environment, in the damaged portion easy moisture absorption that becomes, the copper ion of electric conducting material had quickened the deterioration of the insulating properties of substrate with regard to stripping as a result.Particularly recently, in order in electronic-controlled installation, to obtain diversified controlled function, so seek the densification even the miniaturization of control basal plate, the position that is electrically connected of control basal plate increases, distance between through hole reduces, so produced the so very serious problems of deterioration of quickening the insulating properties of substrate.
In addition, particularly, under the situation of the control basal plate of the electronic-controlled installation in being arranged on the fierce engine room of vibration etc., be necessary further to strengthen the confining force that produces by press-fit terminal.Therefore, when being pressed into surplus for the confining force increasing that improves the press-fit terminal generation, produced the consequence of the burden increase that makes when being pressed on the contrary, burden when reducing to be pressed into, though be pressed into surplus and can suppress burden (load) and take place by reducing this, have the such problem of confining force decline that causes press-fit terminal.
Therefore, method as these problems of solution, providing a kind of in the present invention can carry out under the situation of electrical engagement in for example press-fit terminal being pressed under the hot environment through hole set on the wiring substrate in the employed electronic-controlled installation, when terminal is pressed into, absorb external stress, interference fit with the burden that suppresses to take place in the substrate engages wiring substrate, in addition, the press-fit terminal that still can use in the past also is provided, and the board structure from the stress of terminal that can absorptive substrate be subjected to.
Therefore, at first, before the interference fit of this example of explanation engages wiring substrate, this interference fit is engaged consideration method representation that wiring substrate improves at Figure 1A to 1C with finishing.Finishing that this interference fit is engaged the design that wiring substrate is improved, is identical with the situation of the press-fit terminal of above-mentioned example.
Shown in the curve of load shown in solid line among Figure 1B, in the time of in press-fit terminal P is pressed into through hole H, be added in the variation of the load on the control basal plate 10, near insertion stroke 0.6mm, its load forms peak value.In Fig. 1 C,, represented the variation of the stress that the opening circumference at the through hole H of substrate takes place corresponding to this curve of load.From this stress curve as can be seen, the size of stress taking place, becomes maximum near inserting stroke 0.6mm, and along with being pressed into reducing of action.
Here, when the design basis value of in the past substrate is illustrated appearance,, then insert the maximum of stroke 0.6mm vicinity, surpass this substrate design basis value if compare with this design basis value.Therefore, can think, excessive stress take place, destroy the laminated construction of this circumference at the opening circumference of being located at the through hole on the substrate.
Therefore, for will be when press-fit terminal P is pressed into through hole H, the opening circumference of through hole H damage, as long as the maximum of this stress curve is no more than substrate design basis value.
Based on above understanding, the interference fit of this example engages wiring substrate, form when press-fit terminal is pressed into a plurality of through hole that is located on the wiring substrate respectively, can reduce the board structure that is added in the external stress on the substrate, in order to reduce this stress, the substrate itself that is set as laminated construction possesses flexible structure, as its concrete method, has filled elastomeric material in the flat substrates to substrate carries out the resin of combination.
Next, just the interference fit of this example being engaged wiring substrate describes.As at resin in conjunction with the flat substrates of substrate---there is the cloth several different methods in the way of filling elastic material in the epoxy resin for example.
For example, to making the dry and preimpregnation bed of material that obtains of the epoxy resin varnish impregnation in flat substrates that contains curing agent with being placed on that its lip-deep metal forming carries out that heating and pressurizing is shaped when integrated, make the microparticle that has with the immiscible caoutchouc elasticity of epoxy resin be dispersed in the part of this preimpregnation bed of material in addition all in, form and make the dry and preimpregnation bed of material that obtains of epoxy resin varnish impregnation in flat substrates.
Here, dispersed microparticle have with varnish in the immiscible caoutchouc elasticity of epoxy resin, the material of this particle, a kind of in the middle of acrylic rubber, silicon rubber, the acrylonitrile-butadiene rubber perhaps, selects in the middle of the gains that its combination is cooperated.
Below, being scattered in the resin making this microparticle, the resin that constitutes substrate possesses flexible wiring substrate, and under the situation that the interference fit that applies to through hole engages, the damage situation occurred in the substrate when press-fit terminal is pressed into is illustrated among Fig. 5.In the curve chart of Fig. 5, the resin of this example is possessed the situation that flexible interference fit engages wiring substrate to be illustrated as embodiment, for relatively, the situation of composite base plate (FR-4)-for example glass fabric resin substrate of used in the past epoxy resin is illustrated for example in the past.
In Fig. 5, as the damage that takes place on the substrate when press-fit terminal is pressed into the through hole that is located on the substrate, express the result that destruction length such as peeling off of flat substrates are measured, different with the substrate test film of stress application on the wall of supposition in through hole, by the stromatolith parallel direction imposed load of edge, measured destruction length with the flat substrates of substrate.In the curve chart of Fig. 5, black circle is represented the measurement result in the example in the past, and, the measurement result among solid side's point expression embodiment.Heavy line is corresponding to embodiment, and fine line is corresponding to routine in the past.The tendency that these line reflections are drawn and produced according to each measurement result.
Here, if just the progress of the destruction of example observation in the past length is inclined to, then along with the increase that is added in the stress on the substrate, destruction length strengthens, and is relative therewith, under the situation of present embodiment, even the stress that is applied increases, also show the situation of the progress degree that suppresses destruction length.The generation result's of this destruction difference can be thought because filled the cause of elastomeric material in resin.This destroys the result of length, if because of the difference of the kind of the microparticle of being filled, compares with embodiment among Fig. 5 and not to have so big difference.
In example in the past in the used substrate, under the situation of carrying out hard engage, only be conceived to the confining force with substrate, the damage when not considering that press-fit terminal is pressed into through hole to substrate.Therefore, when terminal density continued to increase, shortened at the interval between through hole, and aspect the insulating reliability that improves substrate, the progress of above-mentioned destruction length becomes a big obstacle.As a result,, consider this destruction length, have to design through hole wideer at interval that perhaps the confining force with press-fit terminal designs lessly in order under hot environment, to use.
Example was relative in the past with this, in the embodiment that elastomeric material is filled in the resin, because when press-fit terminal is pressed into through hole, as shown in Figure 5, even the stress to substrate that takes place is higher, also the progression inhibiting of destroying length can be got very low, so can access the substrate that tolerates the stress when being pressed into.Therefore, even through-hole spacing shortens, also can guarantee the insulating reliability of substrate.
For example, be under the situation of 300 μ m at through-hole spacing (spacing between terminal), the limit that destroy length this moment is 150 μ m.In Fig. 5, this scope is destroyed length field as the permission of stamping oblique line and is expressed out.In routine in the past substrate, for example,, obtain necessary insulating reliability with 300 μ m design through-hole spacing, must weaken the confining force of press-fit terminal, the stress when being pressed into to reduce terminal.Usually, because the generation stress when terminal is pressed into through hole is necessary for 400～500N/mm
2About, so in routine in the past substrate, can't satisfy this requirement.Moreover in Fig. 5, stress takes place as f in this
1Be expressed out.
Relative therewith, in the occasion of the substrate of embodiment,, absorb the external stress that is added on the substrate so can relax owing to be set as the substrate of filling elastic material in resin, can strengthen the intensity of substrate thus, the stress f shown in the image pattern 5
2Like that, for example,, also can be suppressed to below the 150 μ m, fully satisfy above-mentioned requirements destroying length even apply the stress of 600 μ m.
Though in explanation so far, occasion with the filling of the elastomeric material that carries out wiring substrate in all substrates is an example, but be necessary to absorb the part that mitigation is added in the external stress on the substrate, as shown in Fig. 1 C, at the press-fit terminal place, be conceived near being pressed into the inlet of formed through hole on the substrate, the filling of elastomeric material in resin also can partly be carried out at substrate surface.
In addition, in the generation stress bigger occasion of terminal when through hole is pressed into, except filling elastic material in resin, to formed electric conducting material on the through hole inner face, the use metal (for example nickel, palladium, rhodium etc.) harder than copper is to form high strength, and a part of stress when the burden terminal is pressed into makes stress concentrate thus and disperses, the proof stress performance can be improved, the reliability of substrate can be improved.
Moreover, though in above-mentioned each example, it is the occasion of control circuit device that applies to be equipped on the electronic-controlled installation of automobile etc., but the present invention is not limited to relevant purposes, at other circuit substrates, for example in the control circuit substrate of the control circuit substrate of laborsaving machine, communicating machine, can use equally, and can obtain same effect.
As above, in press-fit terminal of the present invention, weaken two sections such elastic characteristics owing to form the elastic force that has the elastic force specific pressure maintaining part of the introduction part of this terminal, so when this terminal being pressed on the substrate in the formed through hole, can suppress burden (load) to the opening circumference of through hole.
Owing to be not when being pressed into, to weaken the pushing force that is added on the press-fit terminal, when being pressed into, improves pressure retaining parts this pushing force, but originally have two sections elastic characteristics on one's body at press-fit terminal, so can be by on press-fit terminal, when being pressed into to being pressed into end, apply constant pushing force and be pressed into action, the burden in the substrate in the time of can suppressing to be pressed into takes place.
In addition, in press-fit terminal of the present invention, because the elastic force of the pressure retaining parts of this terminal can be kept enough confining forces in being pressed into through hole the time, even use common substrate with intact state so strictly do not reduce the management such as diameter tolerance of through hole, on substrate, can not bearing, also can utilize this terminal to keep substrate securely, and, can guarantee and be located at being electrically connected of distribution on the substrate.
In addition, the load when press-fit terminal inserts reduces by half, and therefore, can realize the low active forceization of the insertion anchor clamps of press-fit terminal.
And then, engage in the wiring substrate in interference fit of the present invention, owing to having filled elastomeric material in the resin that carries out combination at flat substrates to substrate, so need not change shape that is pressed into the press-fit terminal in the through hole that is located on the substrate etc., just can guarantee the confining force in the joint of interference fit in the past, can improve the insulating reliability between through hole.Therefore, interference fit can be engaged wiring substrate uses on the control basal plate of the electronic-controlled installation under the rugged environment that particularly is in high temperature, many wet and strong vibration.
In addition, by filling elastic material in resin, can relax and absorb the external stress that is added on the substrate.Thereby, even use terminal in the past, that is to say,, also can obtain preferable effect even terminal is not in the past improved, in addition, in order to manage the surplus that is pressed into of substrate in the past,, be necessary for for example 50 mu m ranges though print the diameter tolerance in the hole of wiring substrate, but can manage with 150 μ m～200 mu m ranges, can increase the design freedom of printing wiring substrate.And, can shorten through hole at interval, can carry out the high density designs of control basal plate.
Claims (13)
1. press-fit terminal, this terminal are to be pressed into the press-fit terminal that remains in the through hole of being located on the wiring substrate, it is characterized in that,
Have pressure retaining parts and introduction part;
Aforementioned pressure maintaining part and aforementioned introduction part have peristome, and this peristome extends along the axial centre of aforementioned terminal, the sectional area ratio aforementioned pressure maintaining part of aforementioned introduction part little;
The aforementioned pressure maintaining part has the elastic force that becomes confining force when being pressed into aforementioned through-hole;
Aforementioned introduction part has than the elastic force a little less than the elastic force of aforementioned pressure maintaining part.
2. an electronic equipment possesses the wiring substrate with through hole and is pressed into the press-fit terminal that remains in this through hole, it is characterized in that,
Aforementioned press-fit terminal has pressure retaining parts and introduction part;
Aforementioned pressure maintaining part and aforementioned introduction part have peristome, and this peristome extends along the axial centre of aforementioned terminal, the sectional area ratio aforementioned pressure maintaining part of aforementioned introduction part little;
The aforementioned pressure maintaining part has the elastic force that becomes confining force when being pressed into aforementioned through-hole;
Aforementioned introduction part has than the elastic force a little less than the elastic force of aforementioned pressure maintaining part.
3. press-fit terminal as claimed in claim 1 is characterized in that aforementioned introduction part forms carefullyyer towards front end.
4. press-fit terminal as claimed in claim 3, the sectional area that it is characterized in that aforementioned introduction part is along with reducing towards aforementioned front end.
5. press-fit terminal as claimed in claim 1 is characterized in that aforementioned peristome forms narrowlyer in the zone corresponding to the aforementioned pressure maintaining part, form in zone corresponding to aforementioned introduction part broad.
6. press-fit terminal as claimed in claim 5, it is characterized in that the aforementioned areas in the aforementioned peristome corresponding to the aforementioned pressure maintaining part, for the elastic force that compensates the aforementioned pressure maintaining part that reduces to cause because of the aforementioned sectional area that makes aforementioned introduction part descends, form narrowlyer.
7. press-fit terminal as claimed in claim 1 is characterized in that aforementioned wiring substrate is the substrate that is laminated.
8. press-fit terminal as claimed in claim 1 is characterized in that aforementioned wiring substrate is made of the multilayer board that is laminated with the compound glass fibre sheet material, has the printing distribution on this wiring substrate surface.
9. press-fit terminal as claimed in claim 1 is characterized in that,
Described wiring substrate is made of flat substrates, possesses the through hole that keeps this terminal after described press-fit terminal is pressed into, and,
Contain elastomeric material at the resin that is used in conjunction with aforementioned flat substrates.
10. press-fit terminal as claimed in claim 9 is characterized in that aforementioned elastic is the elastic granule that is dispersed in the resin of substrate.
11. press-fit terminal as claimed in claim 10 is characterized in that aforementioned elastic granule is any one in acrylic rubber, silicon rubber, the acrylonitrile-butadiene rubber, or its multiple combination.
12. press-fit terminal as claimed in claim 9 is characterized in that aforementioned elastic, is filled in the top layer part of aforesaid base plate.
13. press-fit terminal as claimed in claim 9 is characterized in that the inner peripheral surface of aforementioned through-hole has the metal harder than copper.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002287552A JP2004127610A (en) | 2002-09-30 | 2002-09-30 | Press fit terminal |
| JP287552/2002 | 2002-09-30 | ||
| JP287568/2002 | 2002-09-30 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031544959A Division CN1322633C (en) | 2002-09-30 | 2003-09-30 | Electronic equipment with distribution substrate with maintaining press fit terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1841849A CN1841849A (en) | 2006-10-04 |
| CN100423370C true CN100423370C (en) | 2008-10-01 |
Family
ID=32280285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100721119A Expired - Fee Related CN100423370C (en) | 2002-09-30 | 2003-09-30 | Electronic equipment provided with wiring board into which press-fit terminals are press-fitted |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2004127610A (en) |
| CN (1) | CN100423370C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107431296A (en) * | 2015-04-14 | 2017-12-01 | 株式会社自动网络技术研究所 | Press-in cooperation terminal and board connector |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4721820B2 (en) * | 2005-08-23 | 2011-07-13 | 株式会社オートネットワーク技術研究所 | Press-fit terminal-board connection structure and press-fit terminal design method |
| DE102006040640A1 (en) * | 2006-08-30 | 2008-03-13 | Robert Bosch Gmbh | Insert pin |
| WO2008038331A1 (en) * | 2006-09-25 | 2008-04-03 | Autonetworks Technologies, Ltd. | Press fit terminal |
| JP5692793B2 (en) * | 2011-02-16 | 2015-04-01 | 日本圧着端子製造株式会社 | Press-fit terminal |
| JP6292111B2 (en) * | 2014-12-15 | 2018-03-14 | 株式会社デンソー | Press-fit terminal |
| JP6550890B2 (en) | 2015-04-22 | 2019-07-31 | 住友電装株式会社 | Press-fit terminal |
| JP6541593B2 (en) * | 2015-05-15 | 2019-07-10 | 三菱電機株式会社 | Power semiconductor device |
| CN109478731B (en) * | 2016-08-23 | 2020-03-03 | 日本精工株式会社 | Terminal connecting member, and terminal connecting structure between control device and motor using the same |
| WO2018070318A1 (en) * | 2016-10-12 | 2018-04-19 | 株式会社オートネットワーク技術研究所 | Press-fit terminal |
| JP7043751B2 (en) | 2016-10-12 | 2022-03-30 | 株式会社オートネットワーク技術研究所 | Press-fit terminal |
| JP6687905B2 (en) * | 2016-11-17 | 2020-04-28 | 住友電装株式会社 | Press-fit terminal and manufacturing method thereof |
| JP7135632B2 (en) * | 2018-09-13 | 2022-09-13 | 住友電装株式会社 | PRESS-FIT TERMINAL AND METHOD FOR MANUFACTURING PRESS-FIT TERMINAL |
| JP7205714B2 (en) | 2018-12-28 | 2023-01-17 | 株式会社オートネットワーク技術研究所 | press fit terminal |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN1841849A (en) | 2006-10-04 |
| JP2004127610A (en) | 2004-04-22 |
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Effective date of registration: 20161011 Address after: Hyogo Patentee after: FUJITSU TEN Ltd. Patentee after: HITACHI CHEMICAL Co.,Ltd. Address before: Hyogo Patentee before: FUJITSU TEN Ltd. Patentee before: KEL Corp. Patentee before: HITACHI CHEMICAL Co.,Ltd. Effective date of registration: 20161011 Address after: Hyogo Patentee after: FUJITSU TEN Ltd. Patentee after: KEL Corp. Patentee after: HITACHI CHEMICAL Co.,Ltd. Address before: Hyogo Patentee before: FUJITSU TEN Ltd. Patentee before: KEL Corp. Patentee before: Shin-Kobe Electric Machinery Co.,Ltd. |
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Granted publication date: 20081001 Termination date: 20210930 |
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