WO2020171127A1 - Insert metal member and metal/resin composite molded article - Google Patents

Insert metal member and metal/resin composite molded article Download PDF

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Publication number
WO2020171127A1
WO2020171127A1 PCT/JP2020/006569 JP2020006569W WO2020171127A1 WO 2020171127 A1 WO2020171127 A1 WO 2020171127A1 JP 2020006569 W JP2020006569 W JP 2020006569W WO 2020171127 A1 WO2020171127 A1 WO 2020171127A1
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Prior art keywords
metal
insert
metal member
base material
resin
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PCT/JP2020/006569
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French (fr)
Japanese (ja)
Inventor
俊彦 幸
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三菱マテリアル株式会社
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Publication of WO2020171127A1 publication Critical patent/WO2020171127A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles

Definitions

  • the present invention relates to an insert metal member forming a metal-resin composite molded body, and a metal-resin composite molded body including the insert metal member.
  • the present application claims priority based on Japanese Patent Application No. 2019-027791 filed in Japan on February 19, 2019, and the content thereof is incorporated herein.
  • an electronic/electrical component such as a semiconductor device including a semiconductor element or the like
  • various cooling devices are provided to cool a heating element such as the semiconductor element.
  • a heat dissipation sheet may be disposed between the semiconductor device and the cooling device in order to efficiently dissipate heat from a heating element such as a semiconductor element.
  • thermoelectric sheet for example, as shown in Patent Documents 1 and 2, a heat dissipation sheet composed of a metal-resin composite molded body having a structure in which an insert metal member is filled with resin is proposed.
  • These heat-dissipating sheets are configured to ensure adhesiveness with a resin and heat conductivity with an insert metal member to efficiently transfer heat from electronic/electrical components such as semiconductor devices to a cooling device. ing.
  • Patent Document 1 a metal fiber sheet serving as an insert metal member is impregnated, filled, or laminated on one side or both sides with a heat conductive adhesive having a relatively high fluidity, and processed.
  • Patent Document 2 proposes a method of filling a resin with a metal mesh serving as an insert metal member being electrically heated.
  • Patent Document 1 since the metal fiber sheet is used as the insert metal member, the space filled with the resin is relatively small, and it has been difficult to sufficiently fill the resin. Further, it is necessary to use a heat conductive adhesive having relatively good fluidity, and it has been impossible to freely select the resin composition.
  • Patent Document 2 the metal mesh, which is the insert metal member, is electrically heated and filled with the resin, but there are problems that the manufacturing process is complicated and the degree of freedom in design is reduced.
  • the present invention has been made in view of the above circumstances, and is an insert metal member capable of efficiently and reliably filling a resin, and a metal-resin composite including the insert metal member. It is intended to provide a molded body.
  • an insert metal member is an insert metal member that constitutes a metal-resin composite molded body, and is a long metal base material.
  • the coil-shaped metal coil bodies extending along the axis are arranged in parallel, so that the plurality of through holes extending in one direction are arranged in parallel. Therefore, the resin can be filled even in the insert metal member through the through hole. Further, since the voids are formed which are open in the direction intersecting the extending direction of the through holes, the resin filled in the through holes is also filled in the direction intersecting the through holes from the voids. Therefore, it is possible to efficiently and reliably fill the insert metal member with the resin without selecting a resin having high fluidity and without heating the insert metal member.
  • the area ratio occupied by the metal base material when viewed from the axial direction of the metal coil bodies arranged in parallel is within a range of 10% to 80%. It is preferable. In this case, the area ratio occupied by the metal base material when viewed from the axial direction of the metal coil bodies arranged in parallel is 80% or less, so that the resin can be more efficiently filled through the through holes. It will be possible. On the other hand, the area ratio occupied by the metal base material when viewed in the axial direction of the parallel metal coil bodies is 10% or more, so that the strength of the insert metal member can be ensured and the thermal conductivity can be improved. It becomes possible to secure.
  • the area ratio occupied by the metal base material is 10% when viewed from a direction orthogonal to the axis of the metal coil body and orthogonal to the parallel direction of the metal coil bodies. It is preferably within the range of not less than 95%. In this case, since the area ratio occupied by the metal base material is 95% or less when viewed from a direction orthogonal to the axis of the metal coil body and orthogonal to the parallel direction of the metal coil body, The area is secured, and it becomes possible to more efficiently fill the resin from the void portion in the direction intersecting the through hole.
  • the area ratio occupied by the metal base material is 10% or more when viewed from a direction orthogonal to the axis of the metal coil body and orthogonal to the parallel direction of the metal coil bodies. It is possible to secure the strength and the thermal conductivity.
  • the cross-sectional area perpendicular to the longitudinal direction of the metal substrate is in the range of 0.2 mm 2 or more 5 mm 2 or less.
  • the cross-sectional area of the metal base material perpendicular to the longitudinal direction is 0.2 mm 2 or more, the thermal conductivity of the metal coil body made of this metal base material is sufficiently ensured.
  • the cross-sectional area of the metal base material perpendicular to the longitudinal direction is 5 mm 2 or less, the workability of the metal base material is ensured and the metal coil body can be molded relatively easily. ..
  • the metal coil body is configured so that a cross section orthogonal to the axial direction has a rectangular shape.
  • the metal coil body since the metal coil body has a rectangular cross section orthogonal to the axial direction, it is possible to secure a contact area with an adjacent metal coil body and to improve thermal conductivity between the metal coil bodies. And the strength of the insert metal member itself can be secured.
  • the metal base material is preferably a plate material. In this case, it is possible to secure the contact area with the adjacent metal coil bodies, improve the thermal conductivity between the metal coil bodies, and secure the strength of the insert metal member itself. ..
  • a metal-resin composite molded body is characterized by including the above-mentioned insert metal member and a resin portion filled in the insert metal member. Since the metal-resin composite molded body having this structure is provided with the above-mentioned insert metal member, the resin is sufficiently and surely filled, and the insert metal member and the resin portion are firmly integrated. Moreover, since the insert metal member has a structure in which the metal coil bodies are arranged in parallel, the insert metal members are continuously arranged, and the heat conductivity is particularly excellent. Therefore, it is particularly suitable as a heat dissipation sheet for electronic/electrical parts and the like.
  • an insert metal member that can be filled with resin efficiently and reliably, and a metal-resin composite molded body including the insert metal member.
  • FIG. 3 is a view on arrow A in FIG. 2. It is a B arrow line view in FIG. It is a flowchart which shows the manufacturing method of the insert metal member which is embodiment of this invention. It is isometric view explanatory drawing of the insert metal member which is other embodiment of this invention. It is a schematic explanatory drawing of the test apparatus used in the Example.
  • the metal-resin composite molded body 1 of the present embodiment is used, for example, as a heat dissipation sheet arranged between a power control semiconductor device and the like and a cooling device.
  • a metal-resin composite molded body 1 includes an insert metal member 10 and a resin portion 5 formed by filling the insert metal member 10 with a resin material. It is said that.
  • the resin material that constitutes the resin portion 5 is not particularly limited, but for example, a resin material such as PBT (polybutylene terephthalate) or PPS (polyphenylene sulfide) can be applied, and a filler such as glass or carbon fiber can be used. You can leave.
  • metal coil bodies 11 formed by molding a long metal base material made of a metal having excellent thermal conductivity into a coil shape extending along the axis X are arranged in parallel. It has a different structure.
  • the metal material forming the metal substrate for example, copper or copper alloy, aluminum or aluminum alloy, iron or iron alloy, or the like can be applied.
  • the metal base material made of aluminum is used.
  • the length of the metal coil body 11 is preferably 10 mm or more, more preferably 30 mm or more, but not limited to this.
  • the metal coil bodies 11 are arranged in parallel, so that the through holes 15 extending in one direction are arranged in parallel. Is formed in. Further, the gap between the metal base materials in the metal coil body 11 forms a void portion 16 which is opened in a direction intersecting the extending direction of the through hole 15. ..
  • the metal coil body 11 is configured such that the cross section orthogonal to the axis X direction is rectangular.
  • the metal base material is a plate material.
  • the thickness of the metal substrate is preferably 0.1 mm or more, more preferably 0.3 mm or more.
  • the thickness of the metal substrate is preferably 1 mm or less, more preferably 0.8 mm or less.
  • the width of the metal base material is preferably 0.5 mm or more, and more preferably 1 mm or more.
  • the width of the metal substrate is preferably 10 mm or less, more preferably 5 mm or less.
  • the area ratio occupied by the metal base material when viewed from the axis X direction of the metal coil bodies 11 arranged in parallel is in the range of 10% to 80%. It is preferable that it is within.
  • the strength of the insert metal member 10 can be ensured and the heat conductivity can be ensured by setting the area ratio of the metal base material as viewed from the axis X direction of the parallel metal coil bodies 11 to 10% or more. Is possible.
  • the cross-sectional area of the through hole 15 is secured, and the through hole 15 is provided.
  • the area ratio occupied by the metal base material when viewed from the direction of the axis X of the metal coil bodies 11 arranged in parallel is more preferably 12% or more, and further preferably 15% or more.
  • the area ratio of the metal base material when viewed in the direction of the axis X of the metal coil bodies 11 arranged in parallel is more preferably 70% or less, and further preferably 60% or less.
  • the metal base material when viewed from a direction orthogonal to the axis X of the metal coil body 11 and orthogonal to the parallel direction of the metal coil body 11 is It is preferable that the area ratio (in FIG. 4, the ratio of the total length P in the horizontal direction of the axis of the metal base material to the entire length L) is in the range of 10% to 95%.
  • the area ratio occupied by the metal base material as viewed from a direction orthogonal to the axis X of the metal coil body 11 and orthogonal to the parallel direction of the metal coil body 11 is in the range of 10% to 95%.
  • the area ratio of the metal base material when viewed from a direction orthogonal to the axis X of the metal coil body 11 and orthogonal to the parallel direction of the metal coil body 11 is set to 95% or less, whereby the area of the void portion 16 is reduced. Is ensured, and it becomes possible to efficiently fill the resin from the space 16 in the direction intersecting the through hole 15.
  • the area ratio occupied by the metal base material when viewed from a direction orthogonal to the axis X of the metal coil body 11 and orthogonal to the parallel direction of the metal coil body 11 is more preferably 12% or more, and 15% or more. More preferably.
  • the area ratio occupied by the metal base material when viewed from a direction orthogonal to the axis X of the metal coil body 11 and orthogonal to the parallel direction of the metal coil body 11 is more preferably 80% or less, and 70% or less. More preferably.
  • the cross-sectional area perpendicular to the longitudinal direction of the metal substrate is in the range of 0.2 mm 2 or more 5 mm 2 or less.
  • the cross-sectional area orthogonal to the longitudinal direction of the metal base material is 0.2 mm 2 or more, the thermal conductivity of the metal coil body 11 made of this metal base material is sufficiently ensured.
  • the cross-sectional area orthogonal to the longitudinal direction of the metal base material is set to 5 mm 2 or less, bending workability is ensured, and the metal coil body 11 can be molded relatively easily.
  • the cross-sectional area of the metal base material perpendicular to the longitudinal direction is more preferably 0.5 mm 2 or more, and further preferably 1 mm 2 or more.
  • the cross-sectional area of the metal base material perpendicular to the longitudinal direction is more preferably 4 mm 2 or less, and further preferably 3 mm 2 or less.
  • the porosity is preferably in the range of 60% or more and 95% or less.
  • Metal coil body forming step S01 A metal base material made of a strip material is formed into a coil shape extending along the axis X to form the metal coil body 11.
  • the cross section orthogonal to the axis X direction is configured to have a rectangular shape, and the metal coil body 11 is wound by winding the metal base material around the core material having the rectangular cross section. Is being molded.
  • the area ratio occupied by the metal base material in the axis X direction is determined by the width of the metal base material, the winding angle (the angle formed by the axis X direction in plan view and the extending direction of the metal base material), and the pitch. Can be adjusted.
  • the winding angle is preferably 20° or more, more preferably 30° or more.
  • the winding angle is preferably 80° or less, more preferably 70° or less.
  • Metal coil body laminating step S02 A plurality of metal coil bodies 11 obtained as described above are arranged in parallel with a bonding material.
  • a bonding material for example, an Al—Si brazing material or the like can be used.
  • Metal coil body joining step S03 A plurality of metal coil bodies 11 arranged in parallel are joined via a joining material. At this time, the metal coil bodies 11 are bonded to each other by heating under pressure in an inert atmosphere to generate a liquid phase at the bonding interface between the metal coil bodies 11 and solidifying the liquid phase. As a result, the insert metal member 10 according to this embodiment is manufactured.
  • the insert metal member 10 is filled with resin, and the metal-resin composite molded body 1 according to the present embodiment is manufactured.
  • the plurality of metal coil bodies 11 formed along the axis line X and formed in a coil shape are arranged in parallel, Since the plurality of through holes 15 extending in one direction are formed side by side, it is possible to fill the resin into the insert metal member 10 through the through holes 15.
  • the gap between the metal base materials in the metal coil body 11 forms the void portion 16 opened in the direction intersecting the extending direction of the through hole 15, so that the resin filled in the through hole 15 is The space 16 is also filled in the direction intersecting the through hole 15. Therefore, it becomes possible to efficiently and reliably fill the insert metal member 10 with the resin. Therefore, the metal-resin composite molded body 1 can be easily manufactured without limiting the composition of the resin or heating the insert metal member 10.
  • the cross-sectional area of the through hole 15 is secured.
  • the resin can be more efficiently filled through the through-holes 15, the strength of the insert metal member 10 can be secured, and the thermal conductivity of the metal-resin composite molded body 1 can be secured. Become.
  • the area ratio of the metal base material in the direction perpendicular to the axis of the metal coil body 11 (the metal when viewed from a direction orthogonal to the axis X of the metal coil body 11 and orthogonal to the parallel direction of the metal coil body 11)
  • the area ratio of the base material is in the range of 10% or more and 95% or less
  • the area of the void 16 is secured, and the resin is more efficiently filled in the direction intersecting with the through hole 15 from the void 16.
  • the strength of the insert metal member 10 can be secured, and the thermal conductivity of the metal-resin composite molded body 1 can be secured.
  • the thermal conductivity of the metal coil body 11 can be sufficiently ensured.
  • the workability is secured, and the metal coil body 11 can be molded relatively easily.
  • the metal coil body 11 is configured such that the cross section orthogonal to the axis X direction is rectangular, it is possible to secure the contact area with the adjacent metal coil body 11, The thermal conductivity between the coil bodies 11 can be improved, and the strength of the insert metal member 10 itself can be secured.
  • the metal base material forming the metal coil body 11 is a plate material, it is possible to secure a contact area with the adjacent metal coil body 11, and the space between the metal coil bodies 11 can be secured.
  • the thermal conductivity of the insert metal member 10 can be improved, and the strength of the insert metal member 10 itself can be secured.
  • the insert metal member 10 described above since the insert metal member 10 described above is provided, the resin is sufficiently and reliably filled, and the insert metal member 10 and the resin portion 5 are solid. Are integrated into. Moreover, since the insert metal member 10 has a structure in which the metal coil bodies 11 are arranged in parallel, the insert metal members 10 are continuously arranged, and the heat conductivity is particularly excellent.
  • the present invention is not limited to this, and can be appropriately modified without departing from the technical idea of the invention.
  • the description has been made assuming that the metal coil bodies wound in the same direction are arranged side by side, but the present invention is not limited to this, and as shown in FIG.
  • the insert metal member 110 having a structure wound in the opposite direction may be used.
  • the metal base material forming the metal coil body has been described as the plate material, but the present invention is not limited to this, and the metal base material formed of a round bar or the like may form the metal coil body. ..
  • the metal coil body is described as being configured so that the cross section orthogonal to the longitudinal direction has a rectangular shape, but the present invention is not limited to this, and the cross section has a circular shape or a polygonal shape other than a rectangular shape. May be said.
  • an insert metal member was obtained by molding a metal base material made of aluminum (A1100) into a coil shape extending along an axis and joining a plurality of obtained metal coil bodies in parallel. ..
  • the metal base material has a plate thickness of 0.5 mm and a plate width of 4 mm, and this is wrapped around a rectangular cross-section core rod (width 5 mm, thickness 2 mm) at a winding angle of 45 degrees, and width 6 mm, thickness 3 mm, length 100 mm.
  • the metal coil body of was molded.
  • a plurality of metal coil bodies were arranged side by side in the width direction and joined using an Al—Si brazing material to obtain an insert metal member having a width of 30 mm, a thickness of 3 mm and a length of 100 mm.
  • five metal coil bodies were arranged side by side in the width direction.
  • the area ratio of the metal base material when viewed in the axial direction of the parallel metal coil bodies was 44.4%.
  • the area ratio occupied by the metal base material when viewed from a direction orthogonal to the axis of the metal coil body and orthogonal to the parallel direction of the metal coil bodies was 53.1%.
  • the porosity was 84.3%.
  • the cross-sectional area orthogonal to the longitudinal direction of the metal base material was 2 mm 2 .
  • the area ratio occupied by the metal base material when viewed from a direction orthogonal to the axis of the metal coil body and orthogonal to the parallel direction of the metal coil body is as shown in FIG. Was calculated as a percentage of the total length L.
  • the length P of the metal base material in the horizontal axis direction was 5.6 mm
  • the total length P of the metal base material in the horizontal axis direction was 56 mm
  • the total length L was 100 mm.
  • the area ratio was 53.1% because there was a portion where the metal substrates overlap in the horizontal direction of the axis.
  • the porosity was determined from the volume obtained from the outer dimensions of the insert metal member and the weight of the entire insert metal member.
  • an insert metal member made of a porous body obtained by sintering a fiber material ( ⁇ 300 ⁇ m) made of aluminum (A1100) was prepared. At this time, the porosity was adjusted to 85%.
  • the obtained insert metal members of the example of the present invention and the comparative example were placed in the cavity 51 of the evaluation device 50 shown in FIG. 7.
  • the insert metal member of the example of the present invention was arranged such that the through hole extends in the longitudinal direction of the cavity 51.
  • the cavity 51 had a length of 100 mm, a width of 30 mm, and a thickness of 3 mm.
  • the standard viscosity liquid (12500 cP) was supplied from the liquid supply unit 52 of the evaluation device 50 shown in FIG. 7 at a constant pressure (50 kPa), and the cavity 51 was filled with the standard viscosity liquid via the supply passage 53.
  • a gas vent hole 54 for venting the gas in the cavity 51 is provided on the surface of the cavity 51 opposite to the supply passage 53.
  • the present invention it is possible to provide an insert metal member that can be filled with resin efficiently and reliably, and a metal-resin composite molded body including the insert metal member.
  • the metal-resin composite molded article of the present invention is suitable as a heat dissipation sheet for electronic/electrical parts and the like.

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  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

An insert metal member (10) according to the present invention constitutes a metal/resin composite molded article, is characterized by including a plurality of metal coil bodies (11), in which long metal base materials are formed in a coil shape extending along an axis (X), the metal coil bodies (11) being arranged in parallel, and is characterized in that a plurality of through-holes (15) extending in one direction are formed in parallel, and in that gap portions (16) that open in a direction intersecting the direction in which the through-holes (15) extend are formed.

Description

インサート金属部材、及び、金属樹脂複合成形体Insert metal member and metal resin composite molded body
　本発明は、金属樹脂複合成形体を構成するインサート金属部材、このインサート金属部材を備えた金属樹脂複合成形体に関する。
　本願は、２０１９年２月１９日に、日本に出願された特願２０１９－０２７７９１号に基づき優先権を主張し、その内容をここに援用する。 The present invention relates to an insert metal member forming a metal-resin composite molded body, and a metal-resin composite molded body including the insert metal member.
The present application claims priority based on Japanese Patent Application No. 2019-027791 filed in Japan on February 19, 2019, and the content thereof is incorporated herein.
　例えば、半導体素子等を備えた半導体装置等の電子・電気部品においては、半導体素子等の発熱体を冷却するために、各種冷却装置が配設されている。
　半導体素子等の発熱体からの熱を効率的に放熱するために、半導体装置と冷却装置と間に、放熱シートが配設されることがある。 For example, in an electronic/electrical component such as a semiconductor device including a semiconductor element or the like, various cooling devices are provided to cool a heating element such as the semiconductor element.
A heat dissipation sheet may be disposed between the semiconductor device and the cooling device in order to efficiently dissipate heat from a heating element such as a semiconductor element.
　この放熱シートとしては、例えば特許文献１，２に示すように、インサート金属部材に樹脂を充填した構造の金属樹脂複合成形体で構成されたものが提案されている。
　これらの放熱シートは、樹脂によって密着性を確保するとともに、インサート金属部材によって熱伝導性を確保し、半導体装置等の電子・電気部品から冷却装置への伝熱を効率的に行うように構成されている。 As this heat dissipation sheet, for example, as shown in Patent Documents 1 and 2, a heat dissipation sheet composed of a metal-resin composite molded body having a structure in which an insert metal member is filled with resin is proposed.
These heat-dissipating sheets are configured to ensure adhesiveness with a resin and heat conductivity with an insert metal member to efficiently transfer heat from electronic/electrical components such as semiconductor devices to a cooling device. ing.
　上述の金属樹脂複合成形体を構成する場合には、インサート金属部材に樹脂を十分に、かつ、確実に充填する必要がある。
　例えば特許文献１においては、インサート金属部材となる金属繊維シートに、比較的流動性の高い熱伝導性接着剤を、含浸、充填、又は片面もしくは両面に積層して加工処理した構造としている。
　特許文献２においては、インサート金属部材となる金属メッシュを通電加熱した状態で、樹脂を充填する方法が提案されている。 When configuring the above-mentioned metal-resin composite molded body, it is necessary to fill the insert metal member with resin sufficiently and reliably.
For example, in Patent Document 1, a metal fiber sheet serving as an insert metal member is impregnated, filled, or laminated on one side or both sides with a heat conductive adhesive having a relatively high fluidity, and processed.
Patent Document 2 proposes a method of filling a resin with a metal mesh serving as an insert metal member being electrically heated.
特開２０００－１０１００４号公報Japanese Patent Laid-Open No. 2000-101004 特開平０３－２２７６１２号公報Japanese Patent Laid-Open No. 03-227612
　ところで、特許文献１においては、インサート金属部材として金属繊維シートを用いているため、樹脂が充填される空間が比較的小さく、樹脂を十分に充填することは困難であった。また、比較的流動性の良い熱伝導性接着剤を用いる必要があり、樹脂組成を自由に選択することができなかった。
　特許文献２においては、インサート金属部材である金属メッシュに通電加熱して樹脂を充填しているが、製造工程が複雑であるとともに、設計の自由度が低くなるといった問題があった。 By the way, in Patent Document 1, since the metal fiber sheet is used as the insert metal member, the space filled with the resin is relatively small, and it has been difficult to sufficiently fill the resin. Further, it is necessary to use a heat conductive adhesive having relatively good fluidity, and it has been impossible to freely select the resin composition.
In Patent Document 2, the metal mesh, which is the insert metal member, is electrically heated and filled with the resin, but there are problems that the manufacturing process is complicated and the degree of freedom in design is reduced.
　本発明は、以上のような事情を背景としてなされたものであって、樹脂を効率良く、かつ、確実に充填することが可能なインサート金属部材、及び、このインサート金属部材を備えた金属樹脂複合成形体を提供することを目的としている。 The present invention has been made in view of the above circumstances, and is an insert metal member capable of efficiently and reliably filling a resin, and a metal-resin composite including the insert metal member. It is intended to provide a molded body.
　このような課題を解決して、前記目的を達成するために、本発明の一態様であるインサート金属部材は、金属樹脂複合成形体を構成するインサート金属部材であって、長尺の金属基材が軸線に沿って延在するコイル状に成型された金属コイル体を複数有し、前記金属コイル体が並列に配置されており、一方向に延在する複数の貫通孔が並列して形成されているともに、前記貫通孔の延在方向に交差する方向に開口した空隙部が形成されていることを特徴としている。 In order to solve such a problem and achieve the above object, an insert metal member according to one aspect of the present invention is an insert metal member that constitutes a metal-resin composite molded body, and is a long metal base material. Has a plurality of coiled metal coil bodies extending along the axis, the metal coil bodies are arranged in parallel, and a plurality of through holes extending in one direction are formed in parallel. In addition, it is characterized in that a void portion opened in a direction intersecting with the extending direction of the through hole is formed.
　この構成のインサート金属部材によれば、軸線に沿って延在するコイル状に成型された金属コイル体が並列に配置された構造とされ、一方向に延在する複数の貫通孔が並列するように形成されているので、この貫通孔を通じて樹脂をインサート金属部材の内部にまで充填することが可能となる。
　また、前記貫通孔の延在方向に交差する方向に開口した空隙部が形成されているので、貫通孔に充填された樹脂が、前記空隙部から貫通孔と交差する方向にも充填される。
　よって、流動性の高い樹脂を選択することなく、かつ、インサート金属部材を加熱することなく、インサート金属部材に対して、樹脂を効率良く、かつ、確実に充填することが可能となる。 According to the insert metal member having this configuration, the coil-shaped metal coil bodies extending along the axis are arranged in parallel, so that the plurality of through holes extending in one direction are arranged in parallel. Therefore, the resin can be filled even in the insert metal member through the through hole.
Further, since the voids are formed which are open in the direction intersecting the extending direction of the through holes, the resin filled in the through holes is also filled in the direction intersecting the through holes from the voids.
Therefore, it is possible to efficiently and reliably fill the insert metal member with the resin without selecting a resin having high fluidity and without heating the insert metal member.
　本発明の一態様であるインサート金属部材においては、並列する前記金属コイル体の前記軸線方向から見たときの前記金属基材が占める面積率が１０％以上８０％以下の範囲内とされていることが好ましい。
　この場合、並列する前記金属コイル体の前記軸線方向から見たときの前記金属基材が占める面積率が８０％以下とされているので、貫通孔を介して樹脂をさらに効率良く充填することが可能となる。一方、並列する前記金属コイル体の前記軸線方向から見たときの前記金属基材が占める面積率が１０％以上とされているので、インサート金属部材の強度を確保でき、かつ、熱伝導性を確保することが可能となる。 In the insert metal member according to one aspect of the present invention, the area ratio occupied by the metal base material when viewed from the axial direction of the metal coil bodies arranged in parallel is within a range of 10% to 80%. It is preferable.
In this case, the area ratio occupied by the metal base material when viewed from the axial direction of the metal coil bodies arranged in parallel is 80% or less, so that the resin can be more efficiently filled through the through holes. It will be possible. On the other hand, the area ratio occupied by the metal base material when viewed in the axial direction of the parallel metal coil bodies is 10% or more, so that the strength of the insert metal member can be ensured and the thermal conductivity can be improved. It becomes possible to secure.
　本発明の一態様であるインサート金属部材においては、前記金属コイル体の前記軸線に直交するとともに前記金属コイル体の並列方向に直交する方向から見たとき前記金属基材が占める面積率が１０％以上９５％以下の範囲内とされていることが好ましい。
　この場合、前記金属コイル体の前記軸線に直交するとともに前記金属コイル体の並列方向に直交する方向から見たとき前記金属基材が占める面積率が９５％以下とされているので、空隙部の面積が確保され、前記空隙部から貫通孔と交差する方向にさらに効率良く樹脂を充填することが可能となる。一方、前記金属コイル体の前記軸線に直交するとともに前記金属コイル体の並列方向に直交する方向から見たとき前記金属基材が占める面積率が１０％以上とされているので、インサート金属部材の強度を確保でき、かつ、熱伝導性を確保することが可能となる。 In the insert metal member which is one aspect of the present invention, the area ratio occupied by the metal base material is 10% when viewed from a direction orthogonal to the axis of the metal coil body and orthogonal to the parallel direction of the metal coil bodies. It is preferably within the range of not less than 95%.
In this case, since the area ratio occupied by the metal base material is 95% or less when viewed from a direction orthogonal to the axis of the metal coil body and orthogonal to the parallel direction of the metal coil body, The area is secured, and it becomes possible to more efficiently fill the resin from the void portion in the direction intersecting the through hole. On the other hand, the area ratio occupied by the metal base material is 10% or more when viewed from a direction orthogonal to the axis of the metal coil body and orthogonal to the parallel direction of the metal coil bodies. It is possible to secure the strength and the thermal conductivity.
　本発明の一態様であるインサート金属部材においては、前記金属基材の長手方向に直交する断面積が０．２ｍｍ２以上５ｍｍ２以下の範囲内とされていることが好ましい。
　この場合、前記金属基材の長手方向に直交する断面積が０．２ｍｍ２以上とされているので、この金属基材からなる金属コイル体の熱伝導性が十分に確保される。一方、前記金属基材の長手方向に直交する断面積が５ｍｍ２以下とされているので、前記金属基材の加工性が確保され、金属コイル体を比較的容易に成形することが可能となる。 In the insert metal member which is one embodiment of the present invention, it is preferable that the cross-sectional area perpendicular to the longitudinal direction of the metal substrate is in the range of 0.2 mm 2 or more 5 mm 2 or less.
In this case, since the cross-sectional area of the metal base material perpendicular to the longitudinal direction is 0.2 mm 2 or more, the thermal conductivity of the metal coil body made of this metal base material is sufficiently ensured. On the other hand, since the cross-sectional area of the metal base material perpendicular to the longitudinal direction is 5 mm 2 or less, the workability of the metal base material is ensured and the metal coil body can be molded relatively easily. ..
　本発明の一態様であるインサート金属部材においては、前記金属コイル体は、前記軸線方向に直交する断面が矩形状となるように構成されていることが好ましい。
　この場合、前記金属コイル体は、前記軸線方向に直交する断面が矩形状とされているので、隣接する金属コイル体との接触面積を確保することができ、金属コイル体の間の熱伝導性を向上させることができるとともに、インサート金属部材自体の強度を確保することが可能となる。 In the insert metal member according to one aspect of the present invention, it is preferable that the metal coil body is configured so that a cross section orthogonal to the axial direction has a rectangular shape.
In this case, since the metal coil body has a rectangular cross section orthogonal to the axial direction, it is possible to secure a contact area with an adjacent metal coil body and to improve thermal conductivity between the metal coil bodies. And the strength of the insert metal member itself can be secured.
　本発明の一態様であるインサート金属部材においては、前記金属基材は、板条材とされていることが好ましい。
　この場合、隣接する金属コイル体との接触面積を確保することができ、金属コイル体の間の熱伝導性を向上させることができるとともに、インサート金属部材自体の強度を確保することが可能となる。 In the insert metal member according to one aspect of the present invention, the metal base material is preferably a plate material.
In this case, it is possible to secure the contact area with the adjacent metal coil bodies, improve the thermal conductivity between the metal coil bodies, and secure the strength of the insert metal member itself. ..
　本発明の一態様である金属樹脂複合成形体は、上述のインサート金属部材と、このインサート金属部材に充填された樹脂部と、を備えていることを特徴としている。
　この構成の金属樹脂複合成形体においては、上述のインサート金属部材を備えているので、樹脂が十分にかつ確実に充填されており、インサート金属部材と樹脂部とが強固に一体化している。また、インサート金属部材が、金属コイル体が並列に配列された構造とされているので、インサート金属部材が連続的に配置されており、熱伝導性に特に優れている。よって、電子・電気部品等の放熱シートとして特に適している。 A metal-resin composite molded body according to one aspect of the present invention is characterized by including the above-mentioned insert metal member and a resin portion filled in the insert metal member.
Since the metal-resin composite molded body having this structure is provided with the above-mentioned insert metal member, the resin is sufficiently and surely filled, and the insert metal member and the resin portion are firmly integrated. Moreover, since the insert metal member has a structure in which the metal coil bodies are arranged in parallel, the insert metal members are continuously arranged, and the heat conductivity is particularly excellent. Therefore, it is particularly suitable as a heat dissipation sheet for electronic/electrical parts and the like.
　本発明によれば、樹脂を効率良く、かつ、確実に充填することが可能なインサート金属部材、及び、このインサート金属部材を備えた金属樹脂複合成形体を提供することができる。 According to the present invention, it is possible to provide an insert metal member that can be filled with resin efficiently and reliably, and a metal-resin composite molded body including the insert metal member.
本発明の実施形態であるインサート金属部材を備えた金属樹脂複合成形体の一例を示す説明図である。It is explanatory drawing which shows an example of the metal resin composite molded object provided with the insert metal member which is embodiment of this invention. 本発明の実施形態であるインサート金属部材の斜視説明図である。It is isometric view explanatory drawing of the insert metal member which is embodiment of this invention. 図２におけるＡ矢視図である。FIG. 3 is a view on arrow A in FIG. 2. 図３におけるＢ矢視図である。It is a B arrow line view in FIG. 本発明の実施形態であるインサート金属部材の製造方法を示すフロー図である。It is a flowchart which shows the manufacturing method of the insert metal member which is embodiment of this invention. 本発明の他の実施形態であるインサート金属部材の斜視説明図である。It is isometric view explanatory drawing of the insert metal member which is other embodiment of this invention. 実施例において用いた試験装置の概略説明図である。It is a schematic explanatory drawing of the test apparatus used in the Example.
　以下に、本発明の実施形態であるインサート金属部材、及び、インサート金属部材を備えた金属樹脂複合成形体について、添付した図面を参照して説明する。
　本実施形態である金属樹脂複合成形体１は、例えば、電力制御用半導体装置等と冷却装置との間に配設される放熱シートとして用いられる。 Hereinafter, an insert metal member, which is an embodiment of the present invention, and a metal-resin composite molded body including the insert metal member will be described with reference to the accompanying drawings.
The metal-resin composite molded body 1 of the present embodiment is used, for example, as a heat dissipation sheet arranged between a power control semiconductor device and the like and a cooling device.
　図１に示すように、本実施形態である金属樹脂複合成形体１は、インサート金属部材１０と、このインサート金属部材１０に樹脂材料が充填されて構成された樹脂部５と、を備えた構造とされている。
　樹脂部５を構成する樹脂材料については、特に限定はないが、例えば、ＰＢＴ（ポリブチレンテレフタレート）、ＰＰＳ（ポリフェニレンサルファイド）といった樹脂材料を適用することができ、さらにガラスや炭素繊維といったフィラーを含んでいてもよい。 As shown in FIG. 1, a metal-resin composite molded body 1 according to the present embodiment includes an insert metal member 10 and a resin portion 5 formed by filling the insert metal member 10 with a resin material. It is said that.
The resin material that constitutes the resin portion 5 is not particularly limited, but for example, a resin material such as PBT (polybutylene terephthalate) or PPS (polyphenylene sulfide) can be applied, and a filler such as glass or carbon fiber can be used. You can leave.
　本実施形態であるインサート金属部材１０においては、熱伝導性に優れた金属からなる長尺の金属基材を軸線Ｘに沿って延在するコイル状に成型した金属コイル体１１が並列に配置された構造とされている。
　金属基材を構成する金属材料としては、例えば、銅又は銅合金、アルミニウム又はアルミニウム合金、鉄又は鉄合金等を適用することができる。本実施形態では、アルミニウムからなる金属基材を用いたものとされている。
　金属コイル体１１の長さは、１０ｍｍ以上であることが好ましく、３０ｍｍ以上であることがさらに好ましいが、これに限定されることはない。 In the insert metal member 10 of the present embodiment, metal coil bodies 11 formed by molding a long metal base material made of a metal having excellent thermal conductivity into a coil shape extending along the axis X are arranged in parallel. It has a different structure.
As the metal material forming the metal substrate, for example, copper or copper alloy, aluminum or aluminum alloy, iron or iron alloy, or the like can be applied. In this embodiment, the metal base material made of aluminum is used.
The length of the metal coil body 11 is preferably 10 mm or more, more preferably 30 mm or more, but not limited to this.
　本実施形態であるインサート金属部材１０においては、上述のように、金属コイル体１１が並列に配置された構造とされていることから、一方向に延在する複数の貫通孔１５が並列するように形成されている。また、金属コイル体１１における金属基材同士の隙間によって、貫通孔１５の延在方向に交差する方向に開口した空隙部１６が形成されている。　 In the insert metal member 10 of the present embodiment, as described above, the metal coil bodies 11 are arranged in parallel, so that the through holes 15 extending in one direction are arranged in parallel. Is formed in. Further, the gap between the metal base materials in the metal coil body 11 forms a void portion 16 which is opened in a direction intersecting the extending direction of the through hole 15. ‥
　本実施形態であるインサート金属部材１０においては、図３に示すように、金属コイル体１１は、軸線Ｘ方向に直交する断面が矩形状となるように構成されている。
　本実施形態であるインサート金属部材１０においては、金属基材は、板条材とされている。金属基材の厚さは０．１ｍｍ以上であることが好ましく、０.３ｍｍ以上であることがさらに好ましい。金属基材の厚さは１ｍｍ以下であることが好ましく、０．８ｍｍ以下であることがさらに好ましい。
　金属基材の幅は、０．５ｍｍ以上であることが好ましく、１ｍｍ以上であることがさらに好ましい。金属基材の幅は、１０ｍｍ以下であることが好ましく、５ｍｍ以下であることがさらに好ましい。
　本実施形態であるインサート金属部材１０においては、図３に示すように、隣接する金属コイル体１１の短軸同士が接合されている。 In the insert metal member 10 according to the present embodiment, as shown in FIG. 3, the metal coil body 11 is configured such that the cross section orthogonal to the axis X direction is rectangular.
In the insert metal member 10 according to the present embodiment, the metal base material is a plate material. The thickness of the metal substrate is preferably 0.1 mm or more, more preferably 0.3 mm or more. The thickness of the metal substrate is preferably 1 mm or less, more preferably 0.8 mm or less.
The width of the metal base material is preferably 0.5 mm or more, and more preferably 1 mm or more. The width of the metal substrate is preferably 10 mm or less, more preferably 5 mm or less.
In the insert metal member 10 of this embodiment, as shown in FIG. 3, the short axes of the adjacent metal coil bodies 11 are joined together.
　本実施形態であるインサート金属部材１０においては、図３に示すように、並列する金属コイル体１１の軸線Ｘ方向から見たときの金属基材が占める面積率が１０％以上８０％以下の範囲内とされていることが好ましい。
　並列する金属コイル体１１の軸線Ｘ方向から見たときの金属基材が占める面積率が１０％以上とすることで、インサート金属部材１０の強度を確保でき、かつ、熱伝導性を確保することが可能となる。一方、並列する金属コイル体１１の軸線Ｘ方向から見たときの金属基材が占める面積率を８０％以下とすることで、貫通孔１５の断面積が確保され、この貫通孔１５を介して樹脂を効率良く充填することが可能となる。
　並列する金属コイル体１１の軸線Ｘ方向から見たときの金属基材が占める面積率は、１２％以上とすることがさらに好ましく、１５％以上とすることがより好ましい。並列する金属コイル体１１の軸線Ｘ方向から見たときの金属基材が占める面積率は、７０％以下とすることがさらに好ましく、６０％以下とすることがより好ましい。 In the insert metal member 10 according to the present embodiment, as shown in FIG. 3, the area ratio occupied by the metal base material when viewed from the axis X direction of the metal coil bodies 11 arranged in parallel is in the range of 10% to 80%. It is preferable that it is within.
The strength of the insert metal member 10 can be ensured and the heat conductivity can be ensured by setting the area ratio of the metal base material as viewed from the axis X direction of the parallel metal coil bodies 11 to 10% or more. Is possible. On the other hand, by setting the area ratio of the metal base material when viewed from the axis X direction of the parallel metal coil bodies 11 to 80% or less, the cross-sectional area of the through hole 15 is secured, and the through hole 15 is provided. It becomes possible to efficiently fill the resin.
The area ratio occupied by the metal base material when viewed from the direction of the axis X of the metal coil bodies 11 arranged in parallel is more preferably 12% or more, and further preferably 15% or more. The area ratio of the metal base material when viewed in the direction of the axis X of the metal coil bodies 11 arranged in parallel is more preferably 70% or less, and further preferably 60% or less.
　本実施形態であるインサート金属部材１０においては、図４に示すように、金属コイル体１１の軸線Ｘに直交するとともに金属コイル体１１の並列方向に直交する方向から見たときの金属基材が占める面積率（図４においては、金属基材の軸線水平方向長さＰの合計が全体長さＬに対して占める割合）が１０％以上９５％以下の範囲内であることが好ましい。
　金属コイル体１１の軸線Ｘに直交するとともに金属コイル体１１の並列方向に直交する方向から見たときの金属基材が占める面積率を１０％以上とすることにより、インサート金属部材１０の強度を確保でき、かつ、熱伝導性を確保することが可能となる。一方、金属コイル体１１の軸線Ｘに直交するとともに金属コイル体１１の並列方向に直交する方向から見たときの金属基材が占める面積率を９５％以下とすることにより、空隙部１６の面積が確保され、空隙部１６から貫通孔１５と交差する方向に効率良く樹脂を充填することが可能となる。
　金属コイル体１１の軸線Ｘに直交するとともに金属コイル体１１の並列方向に直交する方向から見たときの金属基材が占める面積率は、１２％以上とすることがさらに好ましく、１５％以上とすることがより好ましい。金属コイル体１１の軸線Ｘに直交するとともに金属コイル体１１の並列方向に直交する方向から見たときの金属基材が占める面積率は、８０％以下とすることがさらに好ましく、７０％以下とすることがより好ましい。 In the insert metal member 10 of the present embodiment, as shown in FIG. 4, the metal base material when viewed from a direction orthogonal to the axis X of the metal coil body 11 and orthogonal to the parallel direction of the metal coil body 11 is It is preferable that the area ratio (in FIG. 4, the ratio of the total length P in the horizontal direction of the axis of the metal base material to the entire length L) is in the range of 10% to 95%.
By setting the area ratio occupied by the metal base material as viewed from a direction orthogonal to the axis X of the metal coil body 11 and orthogonal to the parallel direction of the metal coil body 11 to 10% or more, the strength of the insert metal member 10 is increased. It is possible to secure the thermal conductivity and the thermal conductivity. On the other hand, the area ratio of the metal base material when viewed from a direction orthogonal to the axis X of the metal coil body 11 and orthogonal to the parallel direction of the metal coil body 11 is set to 95% or less, whereby the area of the void portion 16 is reduced. Is ensured, and it becomes possible to efficiently fill the resin from the space 16 in the direction intersecting the through hole 15.
The area ratio occupied by the metal base material when viewed from a direction orthogonal to the axis X of the metal coil body 11 and orthogonal to the parallel direction of the metal coil body 11 is more preferably 12% or more, and 15% or more. More preferably. The area ratio occupied by the metal base material when viewed from a direction orthogonal to the axis X of the metal coil body 11 and orthogonal to the parallel direction of the metal coil body 11 is more preferably 80% or less, and 70% or less. More preferably.
　本実施形態であるインサート金属部材１０においては、金属基材の長手方向に直交する断面積が０．２ｍｍ２以上５ｍｍ２以下の範囲内とされていることが好ましい。
　金属基材の長手方向に直交する断面積を０．２ｍｍ２以上とすることにより、この金属基材からなる金属コイル体１１の熱伝導性が十分に確保される。一方、金属基材の長手方向に直交する断面積を５ｍｍ２以下とすることにより、曲げ加工性が確保され、金属コイル体１１を比較的容易に成形することが可能となる。
　金属基材の長手方向に直交する断面積は、０．５ｍｍ２以上とすることがさらに好ましく、１ｍｍ２以上とすることがより好ましい。金属基材の長手方向に直交する断面積は、４ｍｍ２以下とすることがさらに好ましく、３ｍｍ２以下とすることがより好ましい。
　本実施形態であるインサート金属部材１０においては、気孔率が６０％以上９５％以下の範囲内であることが好ましい。 In the insert metal member 10 is present embodiment, it is preferable that the cross-sectional area perpendicular to the longitudinal direction of the metal substrate is in the range of 0.2 mm 2 or more 5 mm 2 or less.
By setting the cross-sectional area orthogonal to the longitudinal direction of the metal base material to be 0.2 mm 2 or more, the thermal conductivity of the metal coil body 11 made of this metal base material is sufficiently ensured. On the other hand, by setting the cross-sectional area orthogonal to the longitudinal direction of the metal base material to 5 mm 2 or less, bending workability is ensured, and the metal coil body 11 can be molded relatively easily.
The cross-sectional area of the metal base material perpendicular to the longitudinal direction is more preferably 0.5 mm 2 or more, and further preferably 1 mm 2 or more. The cross-sectional area of the metal base material perpendicular to the longitudinal direction is more preferably 4 mm 2 or less, and further preferably 3 mm 2 or less.
In the insert metal member 10 of this embodiment, the porosity is preferably in the range of 60% or more and 95% or less.
　次に、本実施形態であるインサート金属部材の製造方法、及び、金属樹脂複合成形体の製造方法について、図５を用いて説明する。 Next, the method for manufacturing the insert metal member and the method for manufacturing the metal resin composite molded body according to the present embodiment will be described with reference to FIG.
（金属コイル体成形工程Ｓ０１）
　板条材からなる金属基材を軸線Ｘに沿って延在するコイル状に成型して、金属コイル体１１を成形する。本実施形態では、図３に示すように、軸線Ｘ方向に直交する断面が矩形状となるように構成されており、矩形断面を有する芯材に金属基材を巻き付けることによって、金属コイル体１１を成形している。
　このとき、金属基材の幅と、巻き角度（平面視した際の軸線Ｘ方向と金属基材の延在方向とがなす角度）、ピッチにより、軸線Ｘ方向において金属基材が占める面積率を調整することができる。
　巻き角度は２０°以上とすることが好ましく、３０°以上とすることがさらに好ましい。巻き角度は８０°以下とすることが好ましく、７０°以下とすることがさらに好ましい。 (Metal coil body forming step S01)
A metal base material made of a strip material is formed into a coil shape extending along the axis X to form the metal coil body 11. In the present embodiment, as shown in FIG. 3, the cross section orthogonal to the axis X direction is configured to have a rectangular shape, and the metal coil body 11 is wound by winding the metal base material around the core material having the rectangular cross section. Is being molded.
At this time, the area ratio occupied by the metal base material in the axis X direction is determined by the width of the metal base material, the winding angle (the angle formed by the axis X direction in plan view and the extending direction of the metal base material), and the pitch. Can be adjusted.
The winding angle is preferably 20° or more, more preferably 30° or more. The winding angle is preferably 80° or less, more preferably 70° or less.
（金属コイル体積層工程Ｓ０２）
　上述のようにして得られた複数の金属コイル体１１を、接合材を介して並列配置する。接合材としては、例えばＡｌ－Ｓｉろう材等を用いることができる。 (Metal coil body laminating step S02)
A plurality of metal coil bodies 11 obtained as described above are arranged in parallel with a bonding material. As the bonding material, for example, an Al—Si brazing material or the like can be used.
（金属コイル体接合工程Ｓ０３）
　接合材を介して並列配置した複数の金属コイル体１１を接合する。このとき、不活性雰囲気下で加圧した状態で加熱し、金属コイル体１１同士の接合界面に液相を生じさせ、これを固化させることで、金属コイル体１１同士が接合される。
　これにより、本実施形態であるインサート金属部材１０が製造される。 (Metal coil body joining step S03)
A plurality of metal coil bodies 11 arranged in parallel are joined via a joining material. At this time, the metal coil bodies 11 are bonded to each other by heating under pressure in an inert atmosphere to generate a liquid phase at the bonding interface between the metal coil bodies 11 and solidifying the liquid phase.
As a result, the insert metal member 10 according to this embodiment is manufactured.
（インサート金属部材配置工程Ｓ０４）
　成形型の内部に、上述のインサート金属部材１０を配置する。このとき、樹脂の充填方向が貫通孔１５の延在方向となるように、インサート金属部材１０の配置方向を調整する。 (Insert metal member arranging step S04)
The insert metal member 10 described above is arranged inside the molding die. At this time, the arrangement direction of the insert metal member 10 is adjusted so that the resin filling direction is the extending direction of the through hole 15.
（樹脂充填工程Ｓ０５）
　成形型の内部に、樹脂を充填する。このとき、樹脂は、インサート金属部材１０の貫通孔１５を通じてインサート金属部材１０の内部に充填されるととともに、貫通孔１５の延在方向に交差する方向に開口した空隙部１６を通じて、貫通孔１５の延在方向に交差する方向に充填される。 (Resin filling step S05)
The inside of the mold is filled with resin. At this time, the resin fills the inside of the insert metal member 10 through the through hole 15 of the insert metal member 10 and also passes through the through hole 15 through the void portion 16 opened in the direction intersecting the extending direction of the through hole 15. Are filled in a direction intersecting the extending direction of the.
　上述の製造方法により、インサート金属部材１０に樹脂が充填され、本実施形態である金属樹脂複合成形体１が製造される。 By the manufacturing method described above, the insert metal member 10 is filled with resin, and the metal-resin composite molded body 1 according to the present embodiment is manufactured.
　以上のような構成とされた本実施形態であるインサート金属部材１０によれば、軸線Ｘに沿って延在するコイル状に成型された複数の金属コイル体１１が並列に配置されることにより、一方向に延在する複数の貫通孔１５が並列するように形成されているので、この貫通孔１５を通じて樹脂をインサート金属部材１０の内部にまで充填することが可能となる。
　また、金属コイル体１１における金属基材同士の間の隙間によって、貫通孔１５の延在方向に交差する方向に開口した空隙部１６が形成されているので、貫通孔１５に充填された樹脂は、空隙部１６から貫通孔１５と交差する方向にも充填される。
　よって、インサート金属部材１０に対して、樹脂を効率良く、かつ、確実に充填することが可能となる。このため、樹脂の組成を限定したり、インサート金属部材１０を加熱したりすることなく、容易に、金属樹脂複合成形体１を製造することができる。 According to the insert metal member 10 of the present embodiment configured as described above, the plurality of metal coil bodies 11 formed along the axis line X and formed in a coil shape are arranged in parallel, Since the plurality of through holes 15 extending in one direction are formed side by side, it is possible to fill the resin into the insert metal member 10 through the through holes 15.
In addition, the gap between the metal base materials in the metal coil body 11 forms the void portion 16 opened in the direction intersecting the extending direction of the through hole 15, so that the resin filled in the through hole 15 is The space 16 is also filled in the direction intersecting the through hole 15.
Therefore, it becomes possible to efficiently and reliably fill the insert metal member 10 with the resin. Therefore, the metal-resin composite molded body 1 can be easily manufactured without limiting the composition of the resin or heating the insert metal member 10.
　本実施形態において、金属コイル体１１の軸線Ｘ方向から見たときの金属基材が占める面積率を１０％以上８０％以下の範囲内とした場合には、貫通孔１５の断面積が確保され、貫通孔１５を介して樹脂をさらに効率良く充填することが可能となるとともに、インサート金属部材１０の強度を確保でき、かつ、金属樹脂複合成形体１の熱伝導性を確保することが可能となる。 In the present embodiment, when the area ratio of the metal base material when viewed from the direction of the axis X of the metal coil body 11 is within the range of 10% to 80%, the cross-sectional area of the through hole 15 is secured. The resin can be more efficiently filled through the through-holes 15, the strength of the insert metal member 10 can be secured, and the thermal conductivity of the metal-resin composite molded body 1 can be secured. Become.
　本実施形態において、金属コイル体１１の軸線垂直方向において金属基材が占める面積率（金属コイル体１１の軸線Ｘに直交するとともに金属コイル体１１の並列方向に直交する方向から見たときの金属基材が占める面積率）を１０％以上９５％以下の範囲内とした場合には、空隙部１６の面積が確保され、空隙部１６から貫通孔１５と交差する方向にさらに効率良く樹脂を充填することが可能となるとともに、インサート金属部材１０の強度を確保でき、かつ、金属樹脂複合成形体１の熱伝導性を確保することが可能となる。 In the present embodiment, the area ratio of the metal base material in the direction perpendicular to the axis of the metal coil body 11 (the metal when viewed from a direction orthogonal to the axis X of the metal coil body 11 and orthogonal to the parallel direction of the metal coil body 11) When the area ratio of the base material) is in the range of 10% or more and 95% or less, the area of the void 16 is secured, and the resin is more efficiently filled in the direction intersecting with the through hole 15 from the void 16. In addition, the strength of the insert metal member 10 can be secured, and the thermal conductivity of the metal-resin composite molded body 1 can be secured.
　本実施形態において、金属基材の長手方向に直交する断面積を、０．２ｍｍ２以上５ｍｍ２以下の範囲内とした場合には、金属コイル体１１の熱伝導性を十分に確保することが可能となるとともに、加工性が確保され、金属コイル体１１を比較的容易に成形することが可能となる。 In the present embodiment, when the cross-sectional area orthogonal to the longitudinal direction of the metal base material is within the range of 0.2 mm 2 or more and 5 mm 2 or less, the thermal conductivity of the metal coil body 11 can be sufficiently ensured. In addition to being possible, the workability is secured, and the metal coil body 11 can be molded relatively easily.
　本実施形態においては、金属コイル体１１は、軸線Ｘ方向に直交する断面が矩形状となるように構成されているので、隣接する金属コイル体１１との接触面積を確保することができ、金属コイル体１１の間の熱伝導性を向上させることができるとともに、インサート金属部材１０自体の強度を確保することが可能となる。 In the present embodiment, since the metal coil body 11 is configured such that the cross section orthogonal to the axis X direction is rectangular, it is possible to secure the contact area with the adjacent metal coil body 11, The thermal conductivity between the coil bodies 11 can be improved, and the strength of the insert metal member 10 itself can be secured.
　本実施形態においては、金属コイル体１１を構成する金属基材が、板条材とされているので、隣接する金属コイル体１１との接触面積を確保することができ、金属コイル体１１の間の熱伝導性を向上させることができるとともに、インサート金属部材１０自体の強度を確保することが可能となる。 In the present embodiment, since the metal base material forming the metal coil body 11 is a plate material, it is possible to secure a contact area with the adjacent metal coil body 11, and the space between the metal coil bodies 11 can be secured. The thermal conductivity of the insert metal member 10 can be improved, and the strength of the insert metal member 10 itself can be secured.
　本実施形態である金属樹脂複合成形体１によれば、上述のインサート金属部材１０を備えているので、樹脂が十分にかつ確実に充填されており、インサート金属部材１０と樹脂部５とが強固に一体化している。また、インサート金属部材１０が、金属コイル体１１が並列に配列された構造とされているので、インサート金属部材１０が連続的に配置されており、熱伝導性に特に優れている。 According to the metal-resin composite molded body 1 of the present embodiment, since the insert metal member 10 described above is provided, the resin is sufficiently and reliably filled, and the insert metal member 10 and the resin portion 5 are solid. Are integrated into. Moreover, since the insert metal member 10 has a structure in which the metal coil bodies 11 are arranged in parallel, the insert metal members 10 are continuously arranged, and the heat conductivity is particularly excellent.
　以上、本発明の実施形態について説明したが、本発明はこれに限定されることはなく、その発明の技術的思想を逸脱しない範囲で適宜変更可能である。
　例えば、本実施形態では、同じ方向に巻かれた金属コイル体同士を並列したものとして説明したが、これに限定されることはなく、図６に示すように、隣接する金属コイル体１１１が互いに逆方向に巻かれた構造のインサート金属部材１１０であってもよい。 Although the embodiment of the present invention has been described above, the present invention is not limited to this, and can be appropriately modified without departing from the technical idea of the invention.
For example, in the present embodiment, the description has been made assuming that the metal coil bodies wound in the same direction are arranged side by side, but the present invention is not limited to this, and as shown in FIG. The insert metal member 110 having a structure wound in the opposite direction may be used.
　本実施形態では、金属コイル体を構成する金属基材を板条材として説明したが、これに限定されることはなく、丸棒等からなる金属基材によって金属コイル体を構成してもよい。
　本実施形態では、金属コイル体を、長手方向に直交する断面が矩形状となるように構成したものとして説明したが、これに限定されることはなく、断面が円形あるいは矩形以外の多角形形状とされていてもよい。 In the present embodiment, the metal base material forming the metal coil body has been described as the plate material, but the present invention is not limited to this, and the metal base material formed of a round bar or the like may form the metal coil body. ..
In the present embodiment, the metal coil body is described as being configured so that the cross section orthogonal to the longitudinal direction has a rectangular shape, but the present invention is not limited to this, and the cross section has a circular shape or a polygonal shape other than a rectangular shape. May be said.
　以下に、本発明の効果を確認すべく行った確認実験の結果について説明する。 The following is a description of the results of confirmation experiments conducted to confirm the effects of the present invention.
　本発明例として、アルミニウム（Ａ１１００）からなる金属基材を軸線に沿って延在するコイル状に成型し、得られた複数の金属コイル体を並列して接合することによりインサート金属部材を得た。
　金属基材の板厚を０．５ｍｍ、板幅を４ｍｍとし、これを矩形断面の芯棒（幅５ｍｍ、厚さ２ｍｍ）に巻き角度４５度で巻き付け、幅６ｍｍ，厚さ３ｍｍ，長さ１００ｍｍの金属コイル体を成形した。複数の金属コイル体を幅方向に並列させてＡｌ－Ｓｉろう材を用いて接合し、幅３０ｍｍ，厚さ３ｍｍ，長さ１００ｍｍのインサート金属部材を得た。本発明例では、５個の金属コイル体を幅方向に並列させた。並列する金属コイル体の前記軸線方向から見たときの金属基材が占める面積率は４４．４％であった。金属コイル体の軸線に直交するとともに金属コイル体の並列方向に直交する方向から見たときの金属基材が占める面積率は５３．１％であった。気孔率は、８４．３％であった。金属基材の長手方向に直交する断面積は２ｍｍ２であった。
　金属コイル体の軸線に直交するとともに金属コイル体の並列方向に直交する方向から見たときの金属基材が占める面積率は、図４に示すように、金属基材の軸線水平方向長さＰの合計が全体長さＬに対して占める割合として求めた。本発明例では、金属基材の軸線水平方向長さＰが５．６ｍｍであり、金属基材の軸線水平方向長さＰの合計が５６ｍｍであり、全体長さＬが１００ｍｍであった。本発明例では、金属基体が軸線水平方向で重なる部分があったため、面積率は５３．１％であった。
　気孔率は、インサート金属部材の外形寸法から求めた体積とインサート金属部材全体の重量から求めた。 As an example of the present invention, an insert metal member was obtained by molding a metal base material made of aluminum (A1100) into a coil shape extending along an axis and joining a plurality of obtained metal coil bodies in parallel. ..
The metal base material has a plate thickness of 0.5 mm and a plate width of 4 mm, and this is wrapped around a rectangular cross-section core rod (width 5 mm, thickness 2 mm) at a winding angle of 45 degrees, and width 6 mm, thickness 3 mm, length 100 mm. The metal coil body of was molded. A plurality of metal coil bodies were arranged side by side in the width direction and joined using an Al—Si brazing material to obtain an insert metal member having a width of 30 mm, a thickness of 3 mm and a length of 100 mm. In the example of the present invention, five metal coil bodies were arranged side by side in the width direction. The area ratio of the metal base material when viewed in the axial direction of the parallel metal coil bodies was 44.4%. The area ratio occupied by the metal base material when viewed from a direction orthogonal to the axis of the metal coil body and orthogonal to the parallel direction of the metal coil bodies was 53.1%. The porosity was 84.3%. The cross-sectional area orthogonal to the longitudinal direction of the metal base material was 2 mm 2 .
The area ratio occupied by the metal base material when viewed from a direction orthogonal to the axis of the metal coil body and orthogonal to the parallel direction of the metal coil body is as shown in FIG. Was calculated as a percentage of the total length L. In the example of the present invention, the length P of the metal base material in the horizontal axis direction was 5.6 mm, the total length P of the metal base material in the horizontal axis direction was 56 mm, and the total length L was 100 mm. In the example of the present invention, the area ratio was 53.1% because there was a portion where the metal substrates overlap in the horizontal direction of the axis.
The porosity was determined from the volume obtained from the outer dimensions of the insert metal member and the weight of the entire insert metal member.
　比較例として、アルミニウム（Ａ１１００）からなる繊維材（φ３００μｍ）を焼結した多孔質体からなるインサート金属部材を準備した。このとき、気孔率を８５％となるように調整した。 As a comparative example, an insert metal member made of a porous body obtained by sintering a fiber material (φ300 μm) made of aluminum (A1100) was prepared. At this time, the porosity was adjusted to 85%.
　得られた本発明例及び比較例のインサート金属部材を、図７に示す評価装置５０のキャビティ５１内に配置した。このとき、本発明例のインサート金属部材は、キャビティ５１の長手方向に貫通孔が延在するように配置した。キャビティ５１は、長さ１００ｍｍ，幅３０ｍｍ，厚さ３ｍｍとした。
　図７に示す評価装置５０の液体供給部５２から一定の圧力（５０ｋＰａ）で標準粘度液（１２５００ｃＰ）を供給し、供給路５３を介してキャビティ５１内に標準粘度液を充填した。キャビティ５１のうち供給路５３とは反対側の面には、キャビティ内５１のガスを抜くガス抜き穴５４が設けられている。 The obtained insert metal members of the example of the present invention and the comparative example were placed in the cavity 51 of the evaluation device 50 shown in FIG. 7. At this time, the insert metal member of the example of the present invention was arranged such that the through hole extends in the longitudinal direction of the cavity 51. The cavity 51 had a length of 100 mm, a width of 30 mm, and a thickness of 3 mm.
The standard viscosity liquid (12500 cP) was supplied from the liquid supply unit 52 of the evaluation device 50 shown in FIG. 7 at a constant pressure (50 kPa), and the cavity 51 was filled with the standard viscosity liquid via the supply passage 53. On the surface of the cavity 51 opposite to the supply passage 53, a gas vent hole 54 for venting the gas in the cavity 51 is provided.
　標準粘度液を供給開始から６０秒後において、キャビティ５１内に充填された標準粘度液の長さを評価した。また、キャビティ５１内を全て充填するまでの時間を評価した。評価結果を表１に示す。 60 seconds after the start of supplying the standard viscosity liquid, the length of the standard viscosity liquid filled in the cavity 51 was evaluated. In addition, the time required to fill the entire cavity 51 was evaluated. The evaluation results are shown in Table 1.
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001
　アルミニウム繊維を焼結した多孔質体からなる比較例と比較して、本発明例のインサート金属部材においては、標準粘度液の充填が効率的に行われていることが確認された。
　以上のことから、本発明例によれば、樹脂を効率良く、かつ、確実に充填することが可能なインサート金属部材を提供可能であることが確認された。 It was confirmed that the standard viscosity liquid was efficiently filled in the insert metal member of the example of the present invention, as compared with the comparative example including the porous body obtained by sintering aluminum fibers.
From the above, according to the present invention example, it was confirmed that it is possible to provide an insert metal member that can be filled with resin efficiently and reliably.
　本発明によれば、樹脂を効率良く、かつ、確実に充填することが可能なインサート金属部材、及び、このインサート金属部材を備えた金属樹脂複合成形体を提供することができる。本発明の金属樹脂複合成形体は、電子・電気部品等の放熱シートとして好適である。 According to the present invention, it is possible to provide an insert metal member that can be filled with resin efficiently and reliably, and a metal-resin composite molded body including the insert metal member. The metal-resin composite molded article of the present invention is suitable as a heat dissipation sheet for electronic/electrical parts and the like.
１　金属樹脂複合成形体
５　樹脂部
１０　インサート金属部材
１１　金属コイル体
１５　貫通孔
１６　空隙部 1 Metal Resin Composite Molded Product 5 Resin Part 10 Insert Metal Member 11 Metal Coil 15 Through Hole 16 Void

Claims (7)

  1. 　金属樹脂複合成形体を構成するインサート金属部材であって、
    　長尺の金属基材が軸線に沿って延在するコイル状に成型された金属コイル体を複数有し、前記金属コイル体が並列に配置されており、
    　一方向に延在する複数の貫通孔が並列して形成されているともに、前記貫通孔の延在方向に交差する方向に開口した空隙部が形成されていることを特徴とするインサート金属部材。     An insert metal member constituting a metal-resin composite molded body,
    A long metal base material has a plurality of metal coil bodies formed in a coil shape extending along the axis, and the metal coil bodies are arranged in parallel,
    An insert metal member, characterized in that a plurality of through-holes extending in one direction are formed in parallel, and a void portion opened in a direction intersecting the extending direction of the through-holes is formed.
  2. 　並列する前記金属コイル体の前記軸線方向から見たときの前記金属基材が占める面積率が１０％以上８０％以下の範囲内であることを特徴とする請求項１に記載のインサート金属部材。 The insert metal member according to claim 1, wherein an area ratio occupied by the metal base material when viewed from the axial direction of the metal coil bodies arranged in parallel is within a range of 10% or more and 80% or less.
  3. 　前記金属コイル体の前記軸線に直交するとともに前記金属コイル体の並列方向に直交する方向から見たときの前記金属基材が占める面積率が１０％以上９５％以下の範囲内であることを特徴とする請求項１又は請求項２に記載のインサート金属部材。 The area ratio occupied by the metal base material when viewed from a direction orthogonal to the axis of the metal coil body and orthogonal to the parallel direction of the metal coil bodies is within a range of 10% or more and 95% or less. The insert metal member according to claim 1 or 2.
  4. 　前記金属基材の長手方向に直交する断面積が、０．２ｍｍ２以上５ｍｍ２以下の範囲内であることを特徴とする請求項１から請求項３のいずれか一項に記載のインサート金属部材。 The cross-sectional area orthogonal to the longitudinal direction of the metal base material is within a range of 0.2 mm 2 or more and 5 mm 2 or less, and the insert metal member according to any one of claims 1 to 3. ..
  5. 　前記金属コイル体は、前記軸線方向に直交する断面が矩形状であることを特徴とする請求項１から請求項４のいずれか一項に記載のインサート金属部材。 The insert metal member according to any one of claims 1 to 4, wherein the metal coil body has a rectangular cross section orthogonal to the axial direction.
  6. 　前記金属基材は、板条材であることを特徴とする請求項１から請求項５のいずれか一項に記載のインサート金属部材。 The insert metal member according to any one of claims 1 to 5, wherein the metal base material is a strip material.
  7. 　請求項１から請求項６のいずれか一項に記載のインサート金属部材と、このインサート金属部材に充填された樹脂部と、を備えていることを特徴とする金属樹脂複合成形体。 A metal-resin composite molded article, comprising: the insert metal member according to any one of claims 1 to 6; and a resin portion filled in the insert metal member.
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