WO2022091824A1 - ばね部材 - Google Patents
ばね部材 Download PDFInfo
- Publication number
- WO2022091824A1 WO2022091824A1 PCT/JP2021/038324 JP2021038324W WO2022091824A1 WO 2022091824 A1 WO2022091824 A1 WO 2022091824A1 JP 2021038324 W JP2021038324 W JP 2021038324W WO 2022091824 A1 WO2022091824 A1 WO 2022091824A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- support plate
- plate
- contact portion
- spring member
- terminal
- Prior art date
Links
- 239000000463 material Substances 0.000 claims abstract description 22
- 239000004065 semiconductor Substances 0.000 description 27
- 239000011810 insulating material Substances 0.000 description 11
- 238000012986 modification Methods 0.000 description 10
- 230000004048 modification Effects 0.000 description 10
- 238000003825 pressing Methods 0.000 description 9
- 239000004020 conductor Substances 0.000 description 7
- 230000017525 heat dissipation Effects 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 230000005489 elastic deformation Effects 0.000 description 4
- 238000007747 plating Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000005219 brazing Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 244000126211 Hericium coralloides Species 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/18—Leaf springs
- F16F1/185—Leaf springs characterised by shape or design of individual leaves
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/71—Means for bonding not being attached to, or not being formed on, the surface to be connected
- H01L24/72—Detachable connecting means consisting of mechanical auxiliary parts connecting the device, e.g. pressure contacts using springs or clips
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2228/00—Functional characteristics, e.g. variability, frequency-dependence
- F16F2228/001—Specific functional characteristics in numerical form or in the form of equations
- F16F2228/005—Material properties, e.g. moduli
- F16F2228/007—Material properties, e.g. moduli of solids, e.g. hardness
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2238/00—Type of springs or dampers
- F16F2238/02—Springs
- F16F2238/022—Springs leaf-like, e.g. of thin, planar-like metal
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F3/00—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic
- F16F3/02—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction
- F16F3/023—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction composed only of leaf springs
Definitions
- the present invention relates to a spring member.
- This application claims priority based on Japanese Patent Application No. 2020-180435 filed in Japan on October 28, 2020, the contents of which are incorporated herein by reference.
- Patent Document 1 a first pressed body and a second pressed body are placed between a first pressed body and a second pressed body facing each other in the first direction.
- a spring member provided in a state of being pressed in a direction in which they are separated from each other in the first direction is known.
- the conventional spring member when one of the first pressed body and the second pressed body is to be used for passing an electric current or transferring heat from one of them toward the other, a spring is used.
- the load characteristics of the member are prioritized, it may be difficult to stably exhibit the characteristics of the spring member, such as conductivity and heat transfer, as designed.
- the present invention has been made in consideration of such circumstances, and an object of the present invention is to provide a spring member capable of stably exhibiting characteristics such as conductivity and heat transfer as designed.
- the spring member of one aspect of the present invention is provided between the first pressed body and the second pressed body facing each other in the first direction.
- At least one of the electric conductivity and the thermal conductivity is formed of a material having a higher electrical conductivity and thermal conductivity than the material forming the support plate, and the support plate is formed of a material having a higher young rate than the material forming the conduction plate.
- the intermediate portion in the second direction orthogonal to the first direction is curved or bent so as to project toward the second pressed body side, and the first in the conduction plate.
- a first contact portion that abuts on the first pressed body is formed at both ends in two directions, and a second contact portion that abuts on the second pressed body is formed at an intermediate portion in the second direction. Is formed, and both ends of the conduction plate in the second direction are separately locked at both ends of the support plate in the second direction, and the second ends of the conduction plate are separately engaged in the middle portion of the second direction.
- a third contact portion is formed that comes into contact with the contact portion and sandwiches the second contact portion in the first direction with the second pressed body.
- the spring member since the spring member includes a conduction plate and a support plate, the spring member is provided between the first pressed body and the second pressed body, and the support plate is provided together with the conduction plate.
- the spring member By elastically deforming in the direction, it becomes possible to strongly contact the first contact portion and the second contact portion of the conductive plate with the first pressed body and the second pressed body, respectively, and mainly The characteristics of the conductive plate, such as conductivity and heat transfer, can be stably exhibited as designed.
- the support plate is formed with a third contact portion that comes into contact with the second contact portion of the conduction plate and sandwiches the second contact portion with the second pressed body in the first direction, the second contact portion is formed.
- the abutting portion can be surely and strongly brought into contact with the second pressed body, and the contact state of the conduction plate with respect to the first pressed body and the second pressed body can be surely stabilized. Since the spring member is provided with a conductive plate and the surface of the support plate is not plated with the same material as the conductive plate, it is easy to obtain at least one of electric conductivity and thermal conductivity. It can be secured at a high level, the plating does not peel off, and the above-mentioned characteristics as designed can be exhibited for a long period of time.
- both ends of the conduction plate in the second direction may be movably locked to both ends of the support plate in the second direction.
- both ends of the conduction plate in the second direction are movably locked to both ends of the support plate in the second direction
- the second end of the support plate follows the elastic deformation of the spring member. It is possible to move both ends of the two directions and both ends of the conduction plate in the second direction relative to each other. For example, both ends of the support plate and the conduction plate in the second direction are separately fixed to each other. Durability can be increased as compared with the case.
- through holes are formed at least at both ends of the conduction plate and the support plate in the second direction, and both ends of the second direction on the other side are formed. It may be movably inserted through the through hole.
- both ends in the second direction on either one of the conduction plate and the support plate are movably inserted into the through holes formed in at least both ends in the second direction on either one. Both ends of the conduction plate in the second direction can be easily and movably locked to both ends of the support plate in the second direction.
- the size of the through hole in the third direction orthogonal to the first direction and the second direction may become smaller toward the intermediate portion side of the second direction.
- the size of the through hole in the third direction becomes smaller toward the intermediate portion side in the second direction, the size of the through hole becomes smaller from the second pressed body to the second pressed body in either the conduction plate or the support plate. It is possible to secure a wide area of the second contact portion or the third contact portion that receives the pressing force in one direction, and it is possible to improve the durability.
- the conduction plate may be elastically deformed, and the first contact portion and the second contact portion may be pressed against the support plate in the first direction.
- the conduction plate is elastically deformed, and the first contact portion and the second contact portion are in pressure contact with the support plate in the first direction. Therefore, for example, the conduction plate and the support plate are not joined to each other over the entire area. Even if the spring member is provided in a state, it is possible to make it difficult for the conduction plate and the support plate to separate from each other in the spring member alone, and the spring member is placed between the first pressed body and the second pressed body. It can be easily provided, and the rigidity of each of the first contact portion and the second contact portion that receives the pressing force in the first direction can be increased.
- the characteristics such as conductivity and heat transfer of the spring member can be stably exhibited as designed.
- FIG. 1 is a cross-sectional view taken along the line II-II of FIG.
- FIG. 3 is a plan view of the conduction plate of FIG. 1 as viewed from one side in the first direction.
- FIG. 3 is a plan view of the support plate of FIG. 1 as viewed from one side in the first direction.
- It is a figure which shows the 1st modification of the usage mode of the spring member of FIG.
- It is a figure which shows the 2nd modification of the usage mode of the spring member of FIG.
- It is sectional drawing along the 1st direction and 2nd direction of the spring member shown as the 1st modification of the said Embodiment.
- FIG. 10 is a cross-sectional view taken along the line XI-XI of FIG.
- FIG. 10 is a cross-sectional view taken along the line XII-XII of FIG.
- FIG. 13 is a cross-sectional view taken along the line XIV-XIV of FIG. It is a front view of the heat dissipation structure of Example 2.
- the spring member 1 of the present embodiment has a first pressed body between the first pressed body W1 and the second pressed body W2 facing each other in the first direction Z.
- the body W1 and the second pressed body W2 are provided in a state of being pressed in a direction in which they are separated from each other in the first direction Z.
- the spring member 1 includes a conduction plate 11 and a support plate 12. The conduction plate 11 and the support plate 12 are provided so as not to be joined to each other over the entire area.
- Each of the conduction plate 11 and the support plate 12 is curved or bent so that the intermediate portion of the second direction X orthogonal to the first direction Z projects toward the second pressed body W2 side.
- the side of the first pressed body W1 along the first direction Z is referred to as one side
- the side of the second pressed body W2 along the first direction Z is referred to as the other side.
- the side away from the center toward the end is called the outside
- the side away from the end toward the center is called the inside.
- the direction orthogonal to the first direction Z and the second direction X is called the third direction Y.
- the conduction plate 11 and the support plate 12 each extend toward one side of the second direction X from the central portion toward the outside.
- Each of the conduction plate 11 and the support plate 12 is curved so as to form a curved surface with a protrusion toward the other side.
- the conduction plate 11 and the support plate 12 are each curved around an axis extending in the third direction Y, and have a curved surface shape that protrudes toward the other side.
- the conduction plate 11 and the support plate 12 may be bent so as to be sharp toward the other side, for example.
- the conductive plate 11 is made of a material having at least one of electric conductivity and thermal conductivity higher than that of the material forming the support plate 12.
- the conduction plate 11 is made of, for example, copper, aluminum, or the like.
- the plate thickness of the conduction plate 11 is, for example, about 50 ⁇ m to 100 ⁇ m.
- the support plate 12 is made of a material having a Young's modulus higher than that of the material forming the conductive plate 11.
- the support plate 12 is made of, for example, carbon steel, stainless steel, or the like.
- the first contact portion 13 that abuts on the first pressed body W1 is formed at both ends of the second direction X, and the second pressed body W2 is formed at the intermediate portion of the second direction X.
- a second contact portion 14 that comes into contact with the surface is formed.
- the size of the second contact portion 14 in the third direction Y is larger than the size of the first contact portion 13 in the third direction Y.
- the area of the second contact portion 14 is larger than the area of the first contact portion 13.
- the area of the second contact portion 14 may be smaller than the area of the first contact portion 13.
- the first contact portion 13 extends in the second direction X so that the open edge 11c of the second direction X in the conduction plate 11 faces the outside of the second direction X.
- the first contact portion 13 is curved so as to form a curved surface of a protrusion toward one side.
- the first contact portion 13 is curved around an axis extending in the third direction Y, and has a curved surface shape that protrudes toward one side.
- the size of the first contact portion 13 in the third direction Y is the same over the entire area of the second direction X.
- the second contact portion 14 is formed in a flat plate shape with the front and back surfaces facing the first direction Z.
- the connecting portion 11a located between the first contact portion 13 and the second contact portion 14 and the second contact portion 14 are in the third direction as they go outward in the second direction X.
- the size of Y is getting smaller.
- the conduction plate 11 exhibits a symmetrical shape with respect to a straight line (a straight line extending in the third direction Y) passing through the central portion of the second direction X in the conduction plate 11 when viewed from the first direction Z.
- the conduction plate 11 exhibits a symmetrical shape with respect to a straight line (a straight line extending in the second direction X) passing through the central portion of the third direction Y in the conduction plate 11 when viewed from the first direction Z.
- both ends of the second direction X in the conduction plate 11 are separately locked at both ends of the second direction X, and at the middle portion of the second direction X.
- a third contact portion 15 is formed which comes into contact with the second contact portion 14 and sandwiches the second contact portion 14 with the second pressed body W2 in the first direction Z.
- the third contact portion 15 is located at the center of the support plate 12 in the second direction X, and is formed in a flat plate shape with the front and back surfaces facing the first direction Z.
- the surface of the third contact portion 15 facing the other side is covered with the second contact portion 14 of the conduction plate 11.
- the third contact portion 15 and the second contact portion 14 are in contact with each other in a non-bonded state.
- the third contact portion 15 and the second contact portion 14 may be joined to each other, and before the spring member 1 is provided between the first pressed body W1 and the second pressed body W2. In the state of, the third contact portion 15 and the second contact portion 14 may be separated from each other in the first direction Z.
- Both ends of the second direction X in the conduction plate 11 are movably locked to both ends of the second direction X in the support plate 12.
- through holes 16 are formed at at least both ends of the second direction X in one of the conduction plate 11 and the support plate 12, and both ends of the second direction X in the other are formed. , Is movably inserted through the through hole 16.
- through holes 16 are formed on both sides of the second direction X in the central portion of the second direction X of either the conduction plate 11 or the support plate 12.
- the through hole 16 is formed in the support plate 12.
- the first contact portion 13 and the connection portion 11a of the conduction plate 11 are inserted into the through hole 16 from the other side to the one side in the direction from the inside to the outside in the second direction X.
- the size of the through hole 16 in the third direction Y decreases toward the inside of the second direction X.
- the through hole 16 has a trapezoidal shape when viewed from the first direction Z.
- the through hole 16 is formed between the outer edge portion 12a connected to the open edge 12b in the second direction X and the central portion in the second direction X in the support plate 12. It is integrally formed over the entire area located in.
- the through hole 16 may be a slit or the like formed only at both ends of the support plate 12 in the second direction X, for example, extending in the third direction Y.
- the outer end edge portion 12a located outside the second direction X from the through hole 16 and connected to the open end edge 12b in the second direction X is the open end edge of the support plate 12 in the second direction X.
- 12b extends in the second direction X so as to face the outside of the second direction X.
- the outer end edge portion 12a of the support plate 12 is curved so as to form a curved surface of a protrusion toward one side.
- the outer end edge portion 12a is curved around an axis extending in the third direction Y, and has a curved surface shape that protrudes toward one side.
- the surface of the outer end edge portion 12a of the support plate 12 facing the one side is covered with the first contact portion 13 of the conduction plate 11.
- the outer end edge portion 12a of the support plate 12 and the first contact portion 13 are in contact with each other in a non-bonded state.
- the outer edge portion 12a of the support plate 12 and the first contact portion 13 may be joined to each other.
- the support plate 12 exhibits a symmetrical shape with respect to a straight line (a straight line extending in the third direction Y) passing through the central portion of the second direction X in the support plate 12 when viewed from the first direction Z.
- the support plate 12 exhibits a symmetrical shape with respect to a straight line (a straight line extending in the second direction X) passing through the central portion of the third direction Y in the support plate 12 when viewed from the first direction Z.
- the conduction plate 11 is elastically deformed, and the first contact portion 13 and the second contact portion 14 are in pressure contact with the support plate 12 in the first direction Z.
- the size of the support plate 12 in the first direction Z is larger than the size of the conduction plate 11 in the first direction Z.
- the portions facing each other in the first direction Z except for the through hole 16 may abut against each other over the entire area.
- a plurality of conduction plates 11 and support plates 12 are provided in a row in the third direction Y, respectively.
- the quantities of the conduction plate 11 and the support plate 12 are not limited to the examples shown in the drawings, and may be changed as appropriate.
- the conduction plates 11 adjacent to each other in the third direction Y are connected to each other via the connecting piece 11b only in the central portion of the second direction X.
- the size of the connecting piece 11b in the second direction X is smaller than the size of the second contact portion 14 in the second direction X.
- the size of the third direction Y in the second contact portion 14 becomes smaller as the distance from the connecting piece 11b increases in the second direction X.
- a spring member to which the plurality of support plates 12 divided from each other are separately attached may be adopted.
- a plurality of connecting pieces 11b may be provided at intervals in the second direction X, or may be provided at a position away from the central portion of the second direction X in the conduction plate 11 in the second direction X. good.
- the support plates 12 adjacent to each other in the third direction Y are connected to each other over the entire length of the second direction X.
- the support plates 12 adjacent to each other in the third direction Y may be connected to each other only in a part or a plurality of places in the second direction X.
- a spring member to which a plurality of conduction plates 11 separately divided from each other are separately attached may be adopted.
- the spring member 1 since the conduction plate 11 and the support plate 12 are provided, the spring member 1 is provided with the first pressed body W1 and the second pressed body W2. By providing between them and elastically deforming the support plate 12 together with the conduction plate 11 in the first direction Z, the first contact portion 13 and the second contact portion 14 of the conduction plate 11 are made into the first pressed body W1 and the first pressed body W1. 2 It becomes possible to strongly contact each of the pressed bodies W2 separately, and it is possible to stably exhibit the characteristics of the conductive plate 11, such as conductivity and heat transfer, as designed.
- a third contact portion 15 is formed on the support plate 12 so as to abut on the second contact portion 14 of the conduction plate 11 and sandwich the second contact portion 14 with the second pressed body W2 in the first direction Z. Therefore, the second contact portion 14 can be reliably and strongly contacted with the second pressed body W2, and the conduction plate 11 with respect to the first pressed body W1 and the second pressed body W2 can be brought into contact with the second pressed body W2.
- the contact state can be reliably stabilized.
- the spring member 1 includes the conduction plate 11, and the surface of the support plate 12 is not plated with the same material as the conduction plate 11 (or is plated with the same material as the conduction plate 11). Therefore, at least one of the electric conductivity and the thermal conductivity can be easily secured to be high, the plating does not peel off, and the above-mentioned characteristics as designed can be exhibited for a long period of time. be able to.
- both ends of the second direction X in the conduction plate 11 are movably locked to both ends of the second direction X in the support plate 12, the support plate follows the elastic deformation of the spring member 1.
- Both ends of the second direction X in the support plate 12 and both ends of the second direction X in the conduction plate 11 can be moved relative to each other, for example, both ends of the second direction X in each of the support plate 12 and the conduction plate 11. Durability can be improved as compared with the case where the portions are separately fixed to each other.
- Both ends of the second direction X in either of the conduction plate 11 and the support plate 12 are movably inserted into through holes 16 formed in at least both ends of the second direction X in either one. Therefore, both ends of the second direction X in the conduction plate 11 can be easily and movably locked to both ends of the second direction X in the support plate 12.
- the second pressed body Since the size of the third direction Y in the through hole 16 becomes smaller toward the intermediate portion side of the second direction X, the second pressed body is formed in either the conduction plate 11 or the support plate 12. It is possible to secure a wide area of the second contact portion 14 or the third contact portion 15 that receives the pressing force in the first direction Z from W2, and it is possible to improve the durability.
- the conduction plate 11 Since the conduction plate 11 is elastically deformed and the first contact portion 13 and the second contact portion 14 are in pressure contact with the support plate 12 in the first direction Z, the conduction plate 11 and the support plate 12 are in contact with each other over the entire area. Even if the spring member 1 is provided in a non-bonded state, it is possible to make it difficult for the conduction plate 11 and the support plate 12 to separate from each other in the spring member 1 alone, and the spring member 1 is the first pressed body W1 and the first. 2 It can be easily provided between the pressed body W2 and the rigidity of the first contact portion 13 and the second contact portion 14 that receive the pressing force in the first direction Z can be increased.
- the two spring members 1 have the directions Z in the first direction opposite to each other, and the first contact portions 13 of the two spring members 1 have each other in the first direction Z. It may be provided between the first pressed body W1 and the second pressed body W2 in a state of being in contact with each other. In this case, the first contact portion 13 of one spring member 1 comes into contact with the first pressed body W1 via the conduction plate 11 of the other spring member 1. Further, when the two spring members 1 are elastically deformed in the first direction Z, the first contact portions 13 that are in contact with each other in the first direction Z in the two spring members 1 are integrally formed without rubbing against each other. It is possible to displace in the two directions X and secure a large amount of elastic deformation in the first direction Z.
- the two spring members 1 have the directions Z in the first direction opposite to each other, and the second contact portions 14 of the two spring members 1 have each other in the first direction Z. It may be provided between the first pressed body W1 and the second pressed body W2 in a state of being in contact with each other. In this case, the second contact portion 14 of one spring member 1 comes into contact with the second pressed body W2 via the conduction plate 11 of the other spring member 1, and the amount of elastic deformation in the first direction Z is increased. It can be secured to a large extent.
- three or more spring members 1 are provided between the first pressed body W1 and the second pressed body W2, and the directions of the adjacent spring members 1 in the first direction Z in the first direction Z are opposite to each other.
- the first contact portions 13 of the spring members 1 adjacent to each other in the first direction Z or the second contact portions 14 may be brought into contact with each other in the first direction Z.
- FIG. 3 shows a support plate 22 having a third contact portion 15 in place of the first contact portion 13 and the second contact portion 14, and FIG. 4 shows the support plate 22 having the third contact portion 15 in place of the third contact portion 15.
- the intermediate portion of the second direction X in the conduction plate 21 is the second portion in the support plate 22.
- both ends of the support plate 22 in the second direction X are directed from the inside to the outside of the second direction X in the through hole 26 of the conduction plate 21. It may be inserted separately.
- the size of the second direction X of the conduction plate 31 is made larger than the size of the second direction X of the support plate 32, and the conduction plate 31 faces the other side of the support plate 32.
- the surface is covered over the entire length of the second direction X, and both ends of the second direction X in the conduction plate 31 are straddled from the other side to the one side with the open end edge 12b of the second direction X in the support plate 32.
- the spring member 3 wound around both ends of the second direction X in the support plate 32 may be adopted.
- both ends of the second direction X in the conduction plate 31 fasten both ends of the second direction X in the support plate 32 in the first direction Z, and the first in each of the support plate 32 and the conduction plate 31. Both ends of the two directions X are separately fixed to each other. Further, in the spring member 3, in the first contact portion 13, the open end edge 31c of the conduction plate 31 in the second direction X extends in the second direction X so as to face the inside of the second direction X.
- a plurality of conduction plates 31 having a size smaller than that of the support plate 32 in the third direction Y are provided on one support plate 32 at intervals in the third direction Y.
- a configuration may be adopted, and for one support plate 32, a plurality of conduction plates 31 having a size smaller than that of the support plate 32 in the third direction Y are connected to the third direction Y via the connecting piece 11b.
- a configuration in which connected members are provided may be adopted, and the size of the third direction Y with respect to one support plate 32 is, for example, slightly smaller than or equivalent to that of the support plate 32.
- a configuration in which two conduction plates 31 are provided may be adopted.
- Both ends of the second direction X in each of the support plates 12, 22, 32 and the conduction plates 11, 21, 31 may be fixed to each other by, for example, brazing.
- the spring members 1, 2, and 3 a plurality of conduction plates 11, 21, 31 and support plates 12, 22, and 32 are provided in a row in the third direction Y, respectively, and are shown in FIG. 9, for example.
- a configuration in which the conduction plates 11, 21, 31 and the support plates 12, 22, and 32 are provided one by one may be adopted, or a configuration in which a plurality of the conduction plates 11, 22, 32 are provided one by one may be adopted.
- the number of the support plates 12, 22 and 32 is smaller than the number of the support plates 12, 22 and 32 for the member integrally formed by connecting the plurality of support plates 12, 22 and 32 in the third direction Y.
- a configuration in which a quantity of conduction plates 11, 21 and 31 are provided may be adopted, and for a member in which a plurality of support plates 12, 22 and 32 are connected in a third direction Y and integrally formed.
- a configuration in which both a plurality of conduction plates 11, 21, 31 connected via the connecting piece 11b and one conduction plate 11, 21, 31 may be provided may be adopted.
- the number of support plates 12, 22, 32 is smaller than the quantity of the conduction plates 11, 21, 31 with respect to the member in which the plurality of conduction plates 11, 21, 31 are connected in the third direction Y and integrally formed.
- a plurality of conduction plates 11, 21 and 31 may be connected in the third direction Y with respect to a member integrally formed by connecting the plurality of conduction plates 11, 21 and 31 in the third direction Y.
- a configuration may be adopted in which both a plurality of integrally formed support plates 12, 22, 32 and one support plate 12, 22, 32 are provided.
- spring member 1 any of the spring members 1, 2, and 3 can be applied to the following examples.
- the second direction X, the third direction Y, and the first direction Z described in the above embodiment are also used in the following embodiments, and the second direction X, the third direction Y, and the first direction Z, and the spring.
- the relationship with the member 1 is the same as that of the embodiment.
- connection terminal structure 40 is configured as a female terminal that can be electrically connected (conducted) to the terminal 45 described later, and includes a frame body 41 and the two spring members 1 of the embodiment.
- the frame body 41 includes a first frame member 42 and a second frame member 43, both of which are U-shaped when viewed in the second direction X.
- the first frame member 42 and the second frame member 43 have the same configuration as each other.
- the first frame member 42 includes a flat plate-shaped bottom wall portion 42a and a side wall portion 42b that is separately connected to both ends of the bottom wall portion 42a in the third direction Y and protrudes in the first direction Z.
- the second frame member 43 has a flat plate-shaped bottom wall portion 43a and a side wall portion 43b that is separately connected to both ends of the bottom wall portion 43a in the third direction Y and protrudes in the first direction Z. Be prepared.
- the first frame member 42 and the second frame member 43 are connected to each other in a posture in which their internal spaces face each other. That is, the two side wall portions 42b of the first frame member 42 are in contact with the two side wall portions 43b of the second frame member 43 separately, and a space is provided inside the frame body 41. At least one of both ends of the first frame member 42 and the second frame member 43 in the second direction X is open in the second direction X, and the internal space of the frame body 41 communicates with the outside on one side thereof. are doing.
- the other end of the first frame member 42 and the second frame member 43 in the second direction X may be opened in the second direction X, or a wall portion (not shown) may be provided on the other end.
- Both the first frame member 42 and the second frame member 43 are made of a conductive material.
- the material forming the first frame member 42 and the second frame member 43 is not particularly limited as long as it is a material that can be energized, and examples thereof include metals such as copper and aluminum.
- the first frame member 42 and the second frame member 43 of the first embodiment are electrically connected to each other by contacting the side wall portions facing each other.
- Two spring members 1 are arranged in the internal space of the frame body 41.
- each spring member 1 of the first embodiment four conduction plates 11 are arranged side by side in the third direction Y, but the number of conduction plates 11 may be other than four.
- the number of support plates 12 may be other than four.
- the two spring members 1 are arranged in the internal space of the frame body 41 so that the two spring members 1 are opposed to each other in the first direction Z and the second contact portions 14 are in contact with each other so as to face each other. When viewed in the first direction Z, the two spring members 1 are arranged so as to overlap each other (see FIG. 12).
- one spring member 1 is housed in the internal space (inside the U-shape) of the first frame member 42, and the first contact portion 13 of the one spring member 1 is at the bottom. It is electrically connected in contact with the inner surface (the surface facing the internal space) of the wall portion 42a, and the other spring member 1 is housed in the internal space (U-shaped inner side) of the second frame member 43.
- the first contact portion 13 of the other spring member 1 is in contact with the inner surface (the surface facing the internal space) of the bottom wall portion 43a and is electrically connected. As shown in FIGS.
- the second contact portions 14 of the two spring members 1 may be separated from each other.
- connection terminal structure 40 of the first embodiment is configured so that a plate-shaped terminal 45 can be arranged between the two spring members 1.
- the terminal 45 is configured as a male terminal that can be inserted between the two spring members 1, and is formed in a rectangular plate shape using a conductive material such as copper or aluminum.
- the shape of the terminal 45 is not limited to the rectangular plate shape, and may be a columnar or comb-shaped member in which a plurality of rod-shaped members extending in the second direction X are arranged in the third direction Y.
- the terminal 45 may have a structure in which a conductive layer is provided on the outer surface of a member made of an insulating material, for example, by plating or the like.
- the terminal 45 of the first embodiment has a configuration in which one side surface and the other side surface of the first direction Z are electrically conductive.
- the sum of the thickness of the first direction Z of the two spring members 1 to which no load is applied and the thickness of the first direction Z of the terminal 45 is the size of the first direction Z in the internal space of the frame 41 (that is, that is). , The distance in the first direction Z between the inner surface of the bottom wall portion 42a and the inner surface of the bottom wall portion 43a). Therefore, in a state where the terminal 45 is arranged between the two spring members 1, the two spring members 1 are compressed and deformed, and the pressing force based on this compression is applied to the terminal 45 and the frame body 41 (first frame). It is given to the member 42 and the second frame member 43).
- FIGS. 10 to 14 A procedure for electrically connecting the terminal 45 to the connection terminal structure 40 will be described with reference to FIGS. 10 to 14.
- the terminal 45 With respect to the connection terminal structure 40 in which the terminal 45 shown in FIGS. 10 to 12 is not inserted, the terminal 45 is moved in the second direction X toward the second contact portion 14 of the two spring members 1. Since the two spring members 1 are curved or bent so as to project toward each other, the moving terminal 45 abuts on the curved surface or slope of the two spring members 1 and further causes the terminal 45 to move in the second direction X. When moved, the two spring members 1 receive a force in the direction away from each other from the terminal 45, and the two second contact portions 14 in contact with each other are separated from each other.
- the terminal 45 When the distance between the first direction Z of the two second contact portions 14 becomes equal to or larger than the thickness of the first direction Z of the terminal 45, the terminal 45 is inserted between the two spring members 1 and the two second contact portions 14 are inserted.
- the portion 14 abuts on the front and back surfaces of an intermediate portion of the terminal 45 in the second direction X (a portion other than both ends of the second direction X of the terminal 45).
- the first contact portion 13 of one spring member 1 is electrically connected in contact with the inner surface of the bottom wall portion 42a, and the first of the other spring member 1 is connected. Since the abutting portion 13 is in contact with the inner surface of the bottom wall portion 43a and is electrically connected, the first frame member 42, the conduction plate 11 of one spring member 1, and one surface of the terminal 45 are electrically connected. The second frame member 43, the conduction plate 11 of the other spring member 1, and the other surface of the terminal 45 are electrically connected. Further, the first frame member 42 and the second frame member 43 of the first embodiment are electrically connected to each other, and the terminal 45 is electrically conductive between one side surface and the other side surface of the first direction Z. Therefore, when the terminal 45 is inserted into the connection terminal structure 40, the first frame member 42, the second frame member 43, the two spring members 1, and the terminal 45 are electrically connected. In this way, the electrical connection between the connection terminal structure 40 and the terminal 45 is completed.
- the conduction plate 11 and the support plate 12 are configured as separate bodies, the required electrical conductivity (or the required electrical conductivity and heat transfer) are conducted.
- Appropriate elastic force and pressing force can be realized by the support plate 12 while being secured by the plate 11. Therefore, an appropriate elastic force and pressing force corresponding to the mechanical strength of the terminal 45 can be obtained by the support plate 12, for example, vibration is applied while the connection terminal structure 40 and the terminal 45 are connected, and the terminal is subjected to vibration. Even when the relative position or posture of the 45 with respect to the connection terminal structure 40 is slightly changed, it is possible to prevent an excessive force from being applied to the terminal 45 and suppress damage to the terminal 45. can.
- the relative positions of the connection terminal structure 40 and the terminal 45 are changed, for example, the relative positions of the two in the second direction X are maintained (for example, the joint portion of the robot). Similarly, it is possible to prevent an excessive force from being applied to the terminal 45, and it is possible to suppress damage to the terminal 45.
- connection terminal structure 40 and the terminal 45 To disconnect the electrical connection between the connection terminal structure 40 and the terminal 45, move the terminal 45 in the second direction X so as to be separated from the connection terminal structure 40, and separate the terminal 45 from between the two spring members 1. Let me. As a result, the second contact portion 14 and the terminal 45 are separated from each other, and the electrical connection between the connection terminal structure 40 and the terminal 45 is eliminated.
- first frame member 42 and the second frame member 43 in the frame body 41 are configured as separate bodies, but the first frame member 42 and the second frame member 43 may be integrally configured. good.
- one of the first frame member 42 and the second frame member 43 does not have a side wall portion, and the one bottom wall portion is the other side wall portion of the first frame member 42 and the second frame member 43. It may be configured to be connected to a unit.
- the connection terminal mechanism including the connection terminal structure 40 and the terminal 45 may be configured.
- some fixing structure for fixing the spring member 1 to the frame body 41 may be used. Examples of the fixing structure include brazing, welding, gluing, and fastening structures such as screws.
- two spring members 1 are provided in the internal space of the frame body 41, but only one spring member 1 may be provided in the frame body 41.
- one spring member 1 is housed inside the first frame member 42 so that the first contact portion 13 is in contact with the inner surface of the bottom wall portion 42a, and the spring member 1 is provided on the second frame member 43 side.
- the terminal 45 is inserted into the connection terminal structure 40, the first frame member 42, the conduction plate 11 of the one spring member 1, and one surface of the terminal 45 are electrically connected.
- the second frame member 43 and the other side surface of the terminal 45 may be electrically connected to each other. That is, the inner surface of the bottom wall portion 43a and the other surface of the terminal 45 may be electrically connected.
- the second frame member 43 that is in direct contact with the terminal 45 is an electrically insulating material such as resin. It may be formed of (hereinafter simply referred to as an insulating material).
- the purpose is to electrically connect the connection terminal structure 40 and the terminal 45, but with or instead of this purpose, ensuring heat transferability between the connection terminal structure 40 and the terminal 45.
- the heat of one of the connection terminal structure 40 and the terminal 45 may be dissipated through the other.
- one surface of the terminal 45 in the first direction Z is formed of a conductive material
- the other surface is formed of an insulating material
- the terminal 45 is connected to the terminal structure 40.
- the conductive plate 11 and the other side surface of the terminal 45 are not necessarily electrically connected, but are connected so as to ensure heat transferability, and the heat of the terminal 45 is transferred to the second frame member via the other spring member 1. It may be configured to dissipate heat to the 43 side. Heat may be generated by conduction on one side of the first frame member 42, the conduction plate 11 of one spring member 1, and the terminal 45, but this heat is radiated to the second frame member 43 side. You may. In this case, the conduction plate 11 of the second frame member 43 and the other spring member 1 may be formed of an insulating material, and the first frame member 42 and the second frame member 43 are electrically insulated from each other. May be done.
- an insulating material may be sandwiched between the two, or the two may be separated from each other.
- the second frame member 43 may be provided with a cooling structure.
- the cooling structure include a structure using a heat sink and a cooling pipe through which a cooling fluid flows.
- one side surface and the other side surface of the terminal 45 in the first direction Z are electrically conductive.
- one surface and the other surface of the terminal 45 in the first direction Z are each made of a conductive material, the surfaces are insulated from each other and the first frame member 42 and the second surface are second.
- the frame member 43 may be insulated from the frame member 43.
- a structure in which an insulating material is sandwiched between two conductive materials can be mentioned.
- this structure is formed by plating or the like. May be good.
- the terminal 45 when the terminal 45 is inserted into the connection terminal structure 40, the first frame member 42, the conduction plate 11 of one spring member 1, and one surface of the terminal 45 are electrically connected.
- the second system, the second frame member 43, the conduction plate 11 of the other spring member 1, and the other surface of the terminal 45 are electrically connected, but the first and second systems are described above. Are isolated from each other, and it is possible to secure an electrical connection between the two systems.
- the terminal 45 is moved in the second direction X and inserted between the two spring members 1 of the connection terminal structure 40, but the terminal 45 is moved in the third direction Y and 2 It may be configured to be inserted between the two spring members 1. In this case, the positions of the side wall portions 42b and 43b may be appropriately changed so that the terminal 45 can be inserted. Further, although the second contact portions 14 of the two spring members 1 before inserting the terminals 45 are in contact with each other, a structure for allowing the terminals 45 to be inserted in the third direction Y may be appropriately adopted. ..
- a protrusion (not shown) is provided on the end surface of the terminal 45, and the protrusion can be inserted into the space S adjacent to the second direction X of the second contact portion 14 shown in FIG. 11, and the terminal 45 is connected.
- the protrusion is moved toward the terminal structure 40 in the third direction Y, the protrusion is first inserted into the space S, and by further moving the terminal 45, the two spring members 1 are pushed and expanded by the protrusion, and the terminal is terminal.
- the structure may be such that the 45 can be inserted between the two spring members 1.
- a plate-shaped member of an insulating material (hereinafter referred to as an insulating plate) having a thickness equivalent to the thickness of the terminal 45 in the first direction Z is arranged in advance between the two spring members 1, and the terminal 45 is connected to the terminal structure.
- the insulating plate is moved in the third direction Y toward 40, the insulating plate is pushed and moved, the terminal 45 is arranged instead at the position where the insulating plate is arranged, and the connection terminal structure 40 and the terminal 45 are electrically connected. It may be configured to be connected to.
- a mechanism may be provided to return the insulating plate between the two spring members 1 when the terminal 45 is separated from the connection terminal structure 40.
- the first embodiment aims to secure an electrical connection (or electrical connection and heat transfer) between the connection terminal structure 40 and the terminal 45, but uses a configuration similar to that of FIGS. 10 to 14. It is also conceivable to use the connection terminal structure 40 like a switch, for example.
- the connection terminal structure 40 like a switch, for example.
- the first frame member 42 and the second frame member 43 are electrically insulated from each other.
- an insulating material may be provided between the first frame member 42 and the second frame member 43, or the first frame member 42 and the second frame member 43 may be separated from each other.
- the sum of the thicknesses of the two spring members 1 to which no load is applied in the first direction Z is larger than the size of the first direction Z in the internal space of the frame body 41. Therefore, even if the terminal 45 is not arranged between the two spring members 1, the two spring members 1 are compressed and deformed, and the pressing force based on this compression is applied to the first frame member 42 and the second frame member. It is given to 43. Further, the second contact portions 14 of the two spring members 1 are in contact with each other. Since the first frame member 42, the second frame member 43, and the conductive plate 11 of the two spring members 1 are made of a conductive material, the terminal 45 is not arranged between the two spring members 1. , The first frame member 42, the conductive plate 11 of one spring member 1, the conductive plate 11 of the other spring member 1, and the second frame member 43 are electrically connected.
- the terminal 45 of this modification has a configuration in which at least one surface of the first direction Z and the other surface are electrically insulated from each other.
- the entire terminal 45 may be formed of an insulating material, or an insulating material may be interposed to electrically connect one side surface and the other side surface of the terminal 45 in the first direction Z. May be insulated. In the latter case, at least one surface of the terminal 45 in the first direction Z may be formed of a conductive material.
- the heat dissipation structure 50 is a structure for dissipating heat from the semiconductor device D, and includes the spring member 1 of the embodiment and the heat sink 51 connected to the spring member 1.
- the semiconductor device D has a structure in which a semiconductor element is coated with an insulating material such as a resin, and examples thereof include a power module provided with a power semiconductor and generating heat with its operation.
- the heat sink 51 is a member for efficiently releasing the heat of the semiconductor device D, and has, for example, a comb tooth shape.
- the material constituting the heat sink 51 is not particularly limited as long as it can efficiently dissipate heat, and examples thereof include metals such as aluminum and copper.
- the spring member 1 is arranged between the semiconductor device D and the heat sink 51. As shown in FIG. 15, the spring member 1 is arranged so as to project toward the heat sink 51, the first contact portion 13 is in contact with the semiconductor device D, and the second contact portion 14 is in contact with the heat sink 51. ..
- the spring member 1 may be arranged so as to project toward the semiconductor device D.
- the conductive plate 11 of the spring member 1 of the second embodiment may have at least a thermal conductivity suitable for heat dissipation.
- a plurality of spring members 1 may be arranged between the semiconductor device D and the heat sink 51.
- the structure for connecting the semiconductor device D and the heat sink 51 via the spring member 1 is not particularly limited, and the spring member 1 is compressed by the weight of the semiconductor device D (or the heat sink 51), and the repulsive force thereof is applied to the semiconductor device D and the heat sink 51.
- the semiconductor device D may be configured to secure the connection between the first contact portion 13 and the second contact portion 14 and the heat sink 51.
- the semiconductor device D and the heat sink 51 may be fastened to each other by a fastening member such as a screw member.
- the screw member When a screw member is used, the screw member is screwed into the heat sink 51 and is inserted into a through hole provided in the semiconductor device D so as to be relatively movable, and the head of the screw member sandwiches the semiconductor device D of the heat sink 51. However, it may be located on the opposite side.
- a through hole penetrating in the first direction Z may be provided in the spring member 1 and the screw member may be inserted through the through hole.
- only one screw member may be used, or a plurality of screw members may be used.
- the semiconductor device D instead of directly connecting the screw member to the semiconductor device D, the semiconductor device D may be provided on, for example, a plate-shaped holding member, and the holding member and the heat sink 51 may be fastened with the screw member.
- a U-shaped member, a clip member, or the like that collectively grips the semiconductor device D and the heat sink 51 is used to hold the spring member 1 between the semiconductor device D and the heat sink 51 in a compressed state. You may.
- the surface of the heat sink 51 on the spring member 1 side is formed in a planar shape, and the heat sink 51 has a second contact portion 14 (or a second contact portion 14) at any position of the surface in either the second direction X or the third direction Y. 1 It is possible to connect to and from the contact portion 13) so that heat can be transferred.
- the comb-teeth shape of the heat sink 51 is provided on the opposite side of the spring member 1.
- the first contact portion 13 (or the second contact portion 14) of the spring member 1 is Of the semiconductor device D, it may be arranged so as to be in contact with the vicinity of the semiconductor element.
- the spring member 1 of the embodiment since the conduction plate 11 and the support plate 12 are formed separately, it is necessary to secure an appropriate elastic force and pressing force by the support plate 12. Thermal conductivity can be easily and appropriately ensured by the conductive plate 11. Therefore, according to the present modification 2, it is possible to dissipate heat from the semiconductor device D more efficiently and appropriately than in the conventional case.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
- Contacts (AREA)
- Springs (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
Description
本願は、2020年10月28日に日本に出願された特願2020-180435号に基づき優先権を主張し、その内容をここに援用する。
支持板に、伝導板の第2当接部に当接して第2被押圧体との間で第2当接部を第1方向に挟み込む第3当接部が形成されているので、第2当接部を、第2被押圧体に確実に強く当接させることが可能になり、第1被押圧体および第2被押圧体に対する伝導板の接触状態を確実に安定させることができる。
ばね部材が伝導板を備えていて、支持板の表面に、伝導板と同じ材質のメッキが施されているのではないことから、電気伝導率および熱伝導率のうちの少なくとも1つを容易に高く確保することができるとともに、メッキの剥がれが無く、設計通りの前述した特性を、長期にわたって発揮させることができる。
本実施形態のばね部材1は、図1および図2に示されるように、第1方向Zで互いに対向する第1被押圧体W1と第2被押圧体W2との間に、第1被押圧体W1および第2被押圧体W2を、互いが第1方向Zに離反する向きに押圧した状態で設けられる。
ばね部材1は、伝導板11および支持板12を備えている。伝導板11および支持板12は、全域にわたって互いに非接合状態とされて設けられている。
以下、第1方向Zに沿う第1被押圧体W1側を一方側といい、第1方向Zに沿う第2被押圧体W2側を他方側という。
第2方向Xに沿って、中央部から離れて端部に向かう側を外側といい、端部から離れて中央部に向かう側を内側という。
第1方向Zおよび第2方向Xに直交する方向を第3方向Yという。
なお、伝導板11および支持板12はそれぞれ、例えば、前記他方側に向けて尖るように屈曲してもよい。
支持板12は、伝導板11を形成する材質よりヤング率が高い材質で形成されている。支持板12は、例えば炭素鋼、若しくはステンレス鋼等で形成されている。
第2当接部14の第3方向Yの大きさは、第1当接部13の第3方向Yの大きさより大きくなっている。第2当接部14の面積は、第1当接部13の面積より広くなっている。なお、第2当接部14の面積は、第1当接部13の面積以下であってもよい。
第2当接部14は、表裏面が第1方向Zを向く平板状に形成されている。
伝導板11は、第1方向Zから見て、伝導板11における第2方向Xの中央部を通る直線(第3方向Yに延びる直線)に対して対称形状を呈する。伝導板11は、第1方向Zから見て、伝導板11における第3方向Yの中央部を通る直線(第2方向Xに延びる直線)に対して対称形状を呈する。
なお、第3当接部15および第2当接部14は、互いに接合してもよく、また、ばね部材1を、第1被押圧体W1と第2被押圧体W2との間に設ける前の状態では、第3当接部15および第2当接部14を、第1方向Zに互いに離間させてもよい。
言い換えれば、伝導板11および支持板12のうちのいずれか一方の、第2方向Xの中央部における第2方向Xの両側に、貫通孔16がそれぞれ形成されている。
伝導板11および支持板12それぞれにおいて、貫通孔16を除き第1方向Zで互いに対向する部分は、全域にわたって互いに当接してもよい。
このように複数の伝導板11が一体に形成された構成に対して、互いに分割された複数の支持板12が各別に取付けられたばね部材を採用してもよい。また、連結片11bは、第2方向Xに間隔をあけて複数設けられてもよく、また、伝導板11における第2方向Xの中央部から第2方向Xに離れた位置に設けられてもよい。
なお、第3方向Yで互いに隣り合う支持板12同士は、第2方向Xにおける一部、若しくは複数個所に限って連結されてもよい。
このように複数の支持板12が一体に形成された構成に対して、互いに分割された複数の伝導板11が各別に取付けられたばね部材を採用してもよい。
ばね部材1が伝導板11を備えていて、支持板12の表面に、伝導板11と同じ材質のメッキが施されているのではない(または、伝導板11と同じ材質のメッキが施されている必要はない)ことから、電気伝導率および熱伝導率のうちの少なくとも1つを容易に高く確保することができるとともに、メッキの剥がれが無く、設計通りの前述した特性を、長期にわたって発揮させることができる。
この場合、一のばね部材1の第1当接部13が、他のばね部材1の伝導板11を介して第1被押圧体W1に当接する。また、2つのばね部材1が、第1方向Zに弾性変形するときに、2つのばね部材1において、第1方向Zで互いに当接した第1当接部13同士が擦れることなく一体に第2方向Xに変位し、かつ第1方向Zの弾性変形量を大きく確保することができる。
この場合、一のばね部材1の第2当接部14が、他のばね部材1の伝導板11を介して第2被押圧体W2に当接し、また、第1方向Zの弾性変形量を大きく確保することができる。
すなわち、図3が、第1当接部13および第2当接部14に代えて第3当接部15を有する支持板22を示し、図4が、第3当接部15に代えて第1当接部13および第2当接部14を有する伝導板21を示している場合、図7に示されるように、伝導板21における第2方向Xの中間部を、支持板22における第2方向Xの中間部より前記他方側に位置させた状態で、伝導板21の貫通孔26に、支持板22の第2方向Xの両端部を、第2方向Xの内側から外側に向けて各別に挿通してもよい。
例えば、図8に示されるように、伝導板31の第2方向Xの大きさを、支持板32の第2方向Xの大きさより大きくし、伝導板31により支持板32の前記他方側を向く面を第2方向Xの全長にわたって覆い、伝導板31における第2方向Xの両端部を、支持板32における第2方向Xの開放端縁12bを前記他方側から前記一方側に跨がせて、支持板32における第2方向Xの両端部に巻き付けたばね部材3を採用してもよい。
このばね部材3では、伝導板31における第2方向Xの両端部が、支持板32における第2方向Xの両端部を第1方向Zに締め付けており、支持板32および伝導板31それぞれにおける第2方向Xの両端部同士が各別に固着されている。また、このばね部材3では、第1当接部13において、伝導板31における第2方向Xの開放端縁31cが、第2方向Xの内側を向くように第2方向Xに延びている。
ばね部材1、2、3として、伝導板11、21、31および支持板12、22、32がそれぞれ、第3方向Yに連ねられて複数設けられた構成を示したが、例えば図9に示されるばね部材1のように、伝導板11、21、31および支持板12、22、32を1つずつ備える構成を採用してもよいし、複数ずつ備える構成を採用してもよい。
図10~図14を参照して、前記実施形態のばね部材1を、接続端子構造40に適用した実施例1を説明する。
接続端子構造40は、後述する端子45と電気的に接続(導通)可能なメス端子として構成され、枠体41と、前記実施形態の2つのばね部材1とを備える。
図10~図12に示す端子45が挿入されていない接続端子構造40に対して、端子45を2つのばね部材1の第2当接部14に向けて第2方向Xに移動させる。2つのばね部材1は互いに向けて突となるように湾曲または屈曲しているので、移動する端子45は、2つのばね部材1の曲面または斜面に当接し、さらに端子45を第2方向Xに移動させると、2つのばね部材1は互いに離れる方向の力を端子45から受け、接していた2つの第2当接部14は離間する。2つの第2当接部14の第1方向Zの間隔が、端子45の第1方向Zの厚み以上になると、端子45は2つのばね部材1の間に挿入され、2つの第2当接部14が、端子45の第2方向Xの中間部分(端子45の第2方向Xの両端部以外の部分)の表裏面にそれぞれ当接する。
前記実施例1では、枠体41における第1枠部材42と第2枠部材43は別体で構成されているが、第1枠部材42と第2枠部材43とが一体で構成されてもよい。
前記実施例1において、第1枠部材42と第2枠部材43の一方が、側壁部を備えず、当該一方の底壁部が、第1枠部材42と第2枠部材43の他方の側壁部に接続される構成でもよい。
前記実施例1において、接続端子構造40と端子45とを備える接続端子機構を構成してもよい。
前記実施例1において、ばね部材1を枠体41に固定する何らかの固定構造が用いられてもよい。固定構造としては、ろう付け、溶接、接着、ネジ等の締結構造などが挙げられる。
ばね部材1が1つのみ枠体41内に設けられ、すなわち第1枠部材42の内側に配置される場合において、端子45と直接に接する第2枠部材43を、樹脂等の電気的絶縁材料(以下単に絶縁材料という)で形成してもよい。
前記実施例1の変形例を以下に説明する。
前記実施例1では、接続端子構造40と端子45との間の電気的接続(または電気的接続と伝熱)を確保することを目的としているが、図10~図14と類似の構成を用いた上で、接続端子構造40を例えばスイッチのように使用することも考えられる。
この場合、第1枠部材42と第2枠部材43との間は電気的に絶縁されている。例えば、第1枠部材42と第2枠部材43との間に絶縁材料が設けられてもよいし、第1枠部材42と第2枠部材43とが互いに離間していてもよい。何ら荷重をかけていない2つのばね部材1の第1方向Zの厚みの和が、枠体41の内部空間における第1方向Zの大きさよりも大きい。このため、2つのばね部材1の間に端子45が配置されていなくても、2つのばね部材1は圧縮変形されており、この圧縮に基づく押圧力を第1枠部材42と第2枠部材43とに与えている。また、2つのばね部材1の第2当接部14は互いに接している。第1枠部材42、第2枠部材43、および2つのばね部材1の伝導板11は導電性材料で形成されているので、端子45が2つのばね部材1の間に配置されていない状態では、第1枠部材42、一方のばね部材1の伝導板11、他方のばね部材1の伝導板11、および第2枠部材43は、電気的に接続されている。
他方、端子45を接続端子構造40の2つのばね部材1の間に挿入させると、端子45の第1方向Zの一方側の面と他方側の面とが電気的に絶縁されているので、2つのばね部材1の第2当接部14の間が電気的に切断され、第1枠部材42から2つのばね部材1を介した第2枠部材43までの電気的接続が解消される。すなわち、スイッチとしては「切」の状態となる。このようにして、端子45を用いて接続端子構造40をスイッチのように機能させることが可能となる。
図15を参照して、前記実施形態のばね部材1を、放熱構造50に適用した実施例2を説明する。
放熱構造50は、半導体デバイスDを放熱させるための構造であって、前記実施形態のばね部材1と、当該ばね部材1に接続されたヒートシンク51とを備える。
半導体デバイスDは、半導体素子を樹脂等の絶縁材料で被覆した構造であり、例えば、パワー半導体を備え、その動作とともに熱を生じるパワーモジュール等が挙げられる。
ヒートシンク51は、半導体デバイスDの熱を効率よく放出するための部材であり、例えば櫛歯形状を有している。ヒートシンク51を構成する材料は、効率よく放熱できるのであれば特に限定されず、例えばアルミニウムや銅などの金属が挙げられる。
上述したように、前記実施形態のばね部材1では、伝導板11と支持板12とを別体で構成することから、適切な弾性力や押圧力を支持板12によって確保した上で、必要な熱伝導性を伝導板11によって容易かつ適切に確保することができる。よって、本変形例2によれば、従来よりも効率よく適切に半導体デバイスDの放熱を行うことが可能となる。
11、21、31 伝導板
12、22、32 支持板
13 第1当接部
14 第2当接部
15 第3当接部
16、26 貫通孔
W1 第1被押圧体
W2 第2被押圧体
X 第2方向
Y 第3方向
Z 第1方向
Claims (5)
- 第1方向で互いに対向する第1被押圧体と第2被押圧体との間に、前記第1被押圧体および前記第2被押圧体を、互いが前記第1方向に離反する向きに押圧した状態で設けられるばね部材であって、
伝導板および支持板を備え、
前記伝導板は、前記支持板を形成する材質より電気伝導率および熱伝導率のうちの少なくとも1つが高い材質で形成され、
前記支持板は、前記伝導板を形成する材質よりヤング率が高い材質で形成され、
前記伝導板および前記支持板はそれぞれ、前記第1方向に直交する第2方向の中間部が、前記第2被押圧体側に向けて突出するように湾曲若しくは屈曲し、
前記伝導板において、前記第2方向の両端部に、前記第1被押圧体に当接する第1当接部が形成されるとともに、前記第2方向の中間部に、前記第2被押圧体に当接する第2当接部が形成され、
前記支持板において、前記第2方向の両端部に、前記伝導板における前記第2方向の両端部が各別に係止されるとともに、前記第2方向の中間部に、前記第2当接部に当接して前記第2被押圧体との間で前記第2当接部を前記第1方向に挟み込む第3当接部が形成されている、ばね部材。 - 前記支持板における前記第2方向の両端部に、前記伝導板における前記第2方向の両端部が各別に移動可能に係止されている、請求項1に記載のばね部材。
- 前記伝導板および前記支持板のうちのいずれか一方における少なくとも前記第2方向の両端部に、貫通孔が形成されるとともに、いずれか他方における前記第2方向の両端部が、前記貫通孔に移動可能に挿通されている、請求項2に記載のばね部材。
- 前記貫通孔の、前記第1方向および前記第2方向に直交する第3方向の大きさが、前記第2方向の中間部側に向かうに従い小さくなっている、請求項3に記載のばね部材。
- 前記伝導板は弾性変形し、前記第1当接部および前記第2当接部が、前記支持板に前記第1方向に圧接している、請求項1から4のいずれか1項に記載のばね部材。
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