JP6357325B2 - Fixing structure and fixing method - Google Patents

Fixing structure and fixing method Download PDF

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JP6357325B2
JP6357325B2 JP2014038862A JP2014038862A JP6357325B2 JP 6357325 B2 JP6357325 B2 JP 6357325B2 JP 2014038862 A JP2014038862 A JP 2014038862A JP 2014038862 A JP2014038862 A JP 2014038862A JP 6357325 B2 JP6357325 B2 JP 6357325B2
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hole
female screw
screw component
press
jig
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JP2015162657A (en
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研太郎 福田
研太郎 福田
桑野　亮司
亮司 桑野
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Shindengen Electric Manufacturing Co Ltd
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Description

本発明は、固定構造および固定方法に関するものである。   The present invention relates to a fixing structure and a fixing method.

二つの部材を固定する方法として、ネジ止めは広く一般に知られている。例えば、第一の部材と第二の部材を固定する場合、両者を貫通する貫通孔にボルトなどの雄ネジ部品を挿入し、その先端部をナットなどの雌ネジ部品に螺合させる（例えば、特許文献１参照）。   As a method for fixing two members, screwing is widely known. For example, when fixing the first member and the second member, a male screw component such as a bolt is inserted into a through-hole penetrating both, and the tip portion is screwed into a female screw component such as a nut (for example, Patent Document 1).

国際公開第２００６／００８８６１号International Publication No. 2006/008861

第一の部材と第二の部材は、第三の部材を間に挟んでネジ止めされる場合がある。例えば、半導体基板（第一の部材）を放熱シート（第三の部材）を介してヒートシンク（第二の部材）に接続する場合などがこれに該当する。この場合、第三の部材には、雄ネジ部品を挿通させるための挿通孔が形成される。挿通孔は、雄ネジ部品よりも大きな面積で形成されるため、第一の部材と第二の部材は、挿通孔によって形成されるギャップ（空間）を介して対向配置される。この状態で雄ネジ部品と雌ネジ部品とを螺合させると、その結合力によって第一の部材または第二の部材がギャップ側に変形し、この変形によって第一の部材または第二の部材に不具合（半導体基板上の実装部品の剥がれなど）が生じる場合がある。   The first member and the second member may be screwed with the third member interposed therebetween. For example, this corresponds to a case where a semiconductor substrate (first member) is connected to a heat sink (second member) via a heat dissipation sheet (third member). In this case, the third member is formed with an insertion hole for inserting the male screw component. Since the insertion hole is formed with a larger area than the male screw part, the first member and the second member are arranged to face each other via a gap (space) formed by the insertion hole. When the male screw part and the female screw part are screwed together in this state, the first member or the second member is deformed to the gap side by the coupling force, and the deformation causes the first member or the second member to be deformed. Defects (such as peeling of mounted components on the semiconductor substrate) may occur.

本発明は、上記課題に鑑みてなされたもので、ギャップを介して対向配置された二つの部材をネジ止めする場合でも、これらの部材に反りが発生しにくい固定構造および固定方法を提供することを目的とする。   The present invention has been made in view of the above problems, and provides a fixing structure and a fixing method in which even when two members arranged to face each other via a gap are screwed, these members are unlikely to warp. With the goal.

本発明の第一の態様に係る固定構造は、第一の貫通孔が形成された第一の部材と、前記第一の貫通孔と対向する位置に第二の貫通孔が形成された第二の部材と、を、前記第一の部材と前記第二の部材との間に挟まれて、前記第一の部材及び前記第二の部材に密着して配置されるシート状の第三の部材に形成され、前記第一の貫通孔と前記第二の貫通孔とに位置合わせされた挿通孔を介して対向配置し、前記第一の部材と前記第二の部材とを雄ネジ部品と雌ネジ部品とを用いて固定する固定構造であって、前記雌ネジ部品は、前記第一の部材側から前記第一の貫通孔に圧入され、前記雌ネジ部品の先端部が、前記第一の貫通孔を貫通して前記挿通孔内に侵入し、前記第二の部材に当接しており、前記雄ネジ部品は、前記第二の部材側から前記第二の貫通孔に挿入され、前記第二の部材と当接した前記雌ネジ部品と螺合している。 The fixing structure according to the first aspect of the present invention includes a first member in which a first through hole is formed, and a second member in which a second through hole is formed at a position facing the first through hole. A sheet-like third member that is sandwiched between the first member and the second member and arranged in close contact with the first member and the second member The first member and the second member are arranged to face each other through an insertion hole formed in the first through hole and aligned with the first through hole and the second through hole. The female screw component is press-fitted into the first through-hole from the first member side, and the distal end portion of the female screw component is through the through-holes penetrate into said insertion hole, said abuts the second member, the male threaded component, the from the second member side first It is inserted into the through hole, and screwed with the second member and the female threaded component in contact with.

本発明では、雌ネジ部品の先端部を第一の部材から突出させ、第二の部材に当接させている。そのため、雌ネジ部品の第一の部材から突出した部分が、第一の部材と第二の部材との間のギャップを保持するスペーサーの役割を果たす。よって、ギャップを介して対向配置された二つの部材をネジ止めする場合でも、これらの部材に反りが発生しにくい固定構造および固定方法を提供することができる。   In this invention, the front-end | tip part of an internal thread component is protruded from the 1st member, and is made to contact | abut to the 2nd member. Therefore, the part which protruded from the 1st member of the internal thread component plays the role of the spacer which hold | maintains the gap between a 1st member and a 2nd member. Therefore, it is possible to provide a fixing structure and a fixing method in which even when two members arranged to face each other via a gap are screwed, these members are unlikely to warp.

本発明の第一実施形態に係る固定構造を示す断面図である。It is sectional drawing which shows the fixing structure which concerns on 1st embodiment of this invention. 本発明の第一実施形態に係る固定方法の第一のステップを説明する断面図である。It is sectional drawing explaining the 1st step of the fixing method which concerns on 1st embodiment of this invention. 本発明の第一実施形態に係る固定方法の第二のステップを説明する断面図である。It is sectional drawing explaining the 2nd step of the fixing method which concerns on 1st embodiment of this invention. 本発明の第一実施形態に係る固定方法の第三のステップを説明する断面図である。It is sectional drawing explaining the 3rd step of the fixing method which concerns on 1st embodiment of this invention. 本発明の第一実施形態に係る固定方法で用いられる複数の治具を説明するための図である。It is a figure for demonstrating the several jig | tool used with the fixing method which concerns on 1st embodiment of this invention. 本発明の第二実施形態に係る固定方法で用いられる治具を説明するための図である。It is a figure for demonstrating the jig | tool used with the fixing method which concerns on 2nd embodiment of this invention.

以下、図面を参照しつつ本発明の実施形態を説明するが、本発明は以下の実施形態に限定されるものではない。なお、以下の全ての図面においては、図面を見やすくするため、各構成要素の寸法や比率などは適宜異ならせてある。   Hereinafter, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited to the following embodiments. In all the drawings below, the dimensions and ratios of the constituent elements are appropriately changed in order to make the drawings easy to see.

［第一実施形態］
以下、図１ないし５を用いて、本発明の第一実施形態に係る固定構造および固定方法について説明する。 [First embodiment]
Hereinafter, the fixing structure and the fixing method according to the first embodiment of the present invention will be described with reference to FIGS.

図１（ａ）は、本発明の第一実施形態に係る固定構造１００の断面図である。図１（ｂ）は、図１（ａ）から雌ネジ部品１４０および雄ネジ部品１５０を除いた部分１０１の断面図である。図１（ｃ）は、雌ネジ部品１４０の断面図である。   Fig.1 (a) is sectional drawing of the fixing structure 100 which concerns on 1st embodiment of this invention. FIG. 1B is a cross-sectional view of the portion 101 excluding the female screw part 140 and the male screw part 150 from FIG. FIG. 1C is a cross-sectional view of the female screw component 140.

本実施形態の固定構造１００は、基板（第一の部材）１１０とヒートシンク（第二の部材）１２０を、放熱シート（第三の部材）１３０を間に挟んでネジ止めするものである。本実施形態の固定構造１００は、図１（ａ）に示すように、基板１１０と、ヒートシンク１２０と、放熱シート１３０と、雌ネジ部品１４０と、雄ネジ部品１５０と、を含む。   The fixing structure 100 of the present embodiment is configured to screw a substrate (first member) 110 and a heat sink (second member) 120 with a heat dissipation sheet (third member) 130 interposed therebetween. As shown in FIG. 1A, the fixing structure 100 of the present embodiment includes a substrate 110, a heat sink 120, a heat dissipation sheet 130, a female screw component 140, and a male screw component 150.

基板１１０の上には、半導体素子等の電子部品が実装されている。基板１１０は、雌ネジ部品１４０を取り付けるための第一の貫通孔１１１を有する（図１（ｂ）参照）。後述するように、雌ネジ部品１４０は、第一の貫通孔１１１に圧入される。このため、基板１１０を形成する材料としては、例えばアルミニウムなどの塑性変形可能な材料が用いられる。   An electronic component such as a semiconductor element is mounted on the substrate 110. The substrate 110 has a first through hole 111 for attaching the female screw component 140 (see FIG. 1B). As will be described later, the female screw component 140 is press-fitted into the first through hole 111. For this reason, as a material for forming the substrate 110, for example, a plastically deformable material such as aluminum is used.

ヒートシンク１２０は、放熱シート１３０を介して基板１１０と熱的に接続されている。基板１１０上に実装された電子部品において発生した熱は、基板１１０および放熱シート１３０を介してヒートシンク１２０に伝わり、ヒートシンク１２０から外部に放出される。ヒートシンク１２０を形成する材料としては、例えば銅やアルミニウムといった、剛性が高く、かつ、熱伝導性の高い材料が用いられる。   The heat sink 120 is thermally connected to the substrate 110 through the heat dissipation sheet 130. The heat generated in the electronic component mounted on the substrate 110 is transmitted to the heat sink 120 through the substrate 110 and the heat dissipation sheet 130 and is released from the heat sink 120 to the outside. As a material for forming the heat sink 120, a material having high rigidity and high thermal conductivity, such as copper or aluminum, is used.

ヒートシンク１２０は、雄ネジ部品１５０を挿入するための、第二の貫通孔１２１を有する（図１（ｂ）参照）。第二の貫通孔１２１は、第一の貫通孔１１１と対向する位置に形成される。ヒートシンク１２０の基板１１０を固定する側は、平板状になっている。ヒートシンク１２０の基板１１０を固定する側とは反対側は、放熱の効率を上げるために、例えば複数のフィンが形成されている。   The heat sink 120 has the 2nd through-hole 121 for inserting the external thread component 150 (refer FIG.1 (b)). The second through hole 121 is formed at a position facing the first through hole 111. The side of the heat sink 120 on which the substrate 110 is fixed is flat. For example, a plurality of fins are formed on the side of the heat sink 120 opposite to the side on which the substrate 110 is fixed in order to increase the efficiency of heat dissipation.

放熱シート１３０は、基板１１０とヒートシンク１２０との間に挟まれて配置される。放熱シート１３０は、基板１１０の上に実装された電子部品で発生した熱を効率よくヒートシンク１２０へと伝達させる。放熱シート１３０を形成する材料としては、例えばシリコーンゴムのように、熱伝導率が高く、且つ、基板１１０およびヒートシンク１２０に対して隙間なく密着可能な柔軟な材料が用いられる。   The heat radiating sheet 130 is disposed between the substrate 110 and the heat sink 120. The heat dissipating sheet 130 efficiently transmits heat generated by the electronic components mounted on the substrate 110 to the heat sink 120. As a material for forming the heat radiating sheet 130, a flexible material having high thermal conductivity and capable of adhering to the substrate 110 and the heat sink 120 without a gap is used, such as silicone rubber.

放熱シート１３０は、雄ネジ部品１５０を挿通させるための挿通孔１３１を有する。挿通孔１３１は、雄ネジ部品１５０の、ネジの進行方向に垂直な断面よりも、大きな面積で形成される。基板１１０とヒートシンク１２０は、挿通孔１３１によって形成されるギャップを介して対向配置される。基板１１０とヒートシンク１２０とは、雄ネジ部品１５０と雌ネジ部品１４０とを用いて固定される。   The heat dissipation sheet 130 has an insertion hole 131 through which the male screw component 150 is inserted. The insertion hole 131 is formed with a larger area than the cross section of the male screw component 150 perpendicular to the screw traveling direction. The substrate 110 and the heat sink 120 are arranged to face each other with a gap formed by the insertion hole 131. The substrate 110 and the heat sink 120 are fixed using a male screw component 150 and a female screw component 140.

雌ネジ部品１４０は、図１（ｃ）に示すように、第一の貫通孔１１１よりも大きい直径を有する第一の胴部１４１と（図１（ａ）参照）、第一の胴部１４１の直径よりも小さい直径を有し、第一の胴部１４１の一端側から延びる第二の胴部１４２と、を含む。雌ネジ部品１４０は、基板１１０側から第一の貫通孔１１１に圧入される。第二の胴部１４２の先端部１４３は、第一の貫通孔１１１を貫通して、基板１１０とヒートシンク１２０との間のギャップ（放熱シート１３０の挿通孔１３１）内に侵入し、ヒートシンク１２０に当接する。雄ネジ部品１５０は、ヒートシンク１２０側から第二の貫通孔１２１に挿入され、ヒートシンク１２０と当接した雄ネジ部品１４０と螺合する。   As shown in FIG. 1C, the female screw component 140 includes a first body 141 having a diameter larger than that of the first through-hole 111 (see FIG. 1A), and the first body 141. And a second body 142 having a diameter smaller than that of the first body 141 and extending from one end side of the first body 141. The female screw component 140 is press-fitted into the first through hole 111 from the substrate 110 side. The front end portion 143 of the second body portion 142 penetrates the first through hole 111 and enters the gap between the substrate 110 and the heat sink 120 (the insertion hole 131 of the heat dissipation sheet 130), and enters the heat sink 120. Abut. The male screw component 150 is inserted into the second through-hole 121 from the heat sink 120 side, and is screwed with the male screw component 140 in contact with the heat sink 120.

第二の胴部１４２の基端部（第一の胴部１４１との接続部）には、第一の胴部１４１側に向けて直径が徐々に小さくなるテーパー部が設けられている。このテーパー部によって、第二の胴部１４２の外周面には、外周面の周方向に沿う溝１４４が形成されている。溝１４４には、雌ネジ部品１４０を第一の貫通孔１１１に圧入したときに塑性変形した基板１１０の一部が充填される。これにより、雌ネジ部品１４０が基板１１０に対して強固に固定されている。   A taper portion whose diameter gradually decreases toward the first body portion 141 side is provided at the base end portion of the second body portion 142 (connection portion with the first body portion 141). By this tapered portion, a groove 144 is formed on the outer peripheral surface of the second body 142 along the circumferential direction of the outer peripheral surface. The groove 144 is filled with a part of the substrate 110 that is plastically deformed when the female screw component 140 is press-fitted into the first through hole 111. As a result, the female screw component 140 is firmly fixed to the substrate 110.

以上のように、本実施形態の固定構造１００においては、第一の貫通孔１１１が形成された基板（第一の部材）１１０と、第一の貫通孔１１１と対向する位置に第二の貫通孔１２１が形成されたヒートシンク（第二の部材）１２０と、が、挿通孔（ギャップ）１３１を介して対向配置される（図１（ｂ）参照）。   As described above, in the fixing structure 100 of the present embodiment, the substrate (first member) 110 in which the first through hole 111 is formed, and the second through hole at a position facing the first through hole 111. A heat sink (second member) 120 in which the hole 121 is formed is disposed so as to face the insertion hole (gap) 131 (see FIG. 1B).

かかる状態で、基板１１０とヒートシンク１２０とを、雄ネジ部品１５０と雌ネジ部品１４０とを用いて固定しようとすると、その結合力によって基板１１０またはヒートシンク１２０が挿通孔１３１側に変形し、この変形によって基板１１０またはヒートシンク１２０に不具合（半導体基板上の実装部品の剥がれなど）が生じる可能性がある。   In this state, when the board 110 and the heat sink 120 are fixed using the male screw part 150 and the female screw part 140, the board 110 or the heat sink 120 is deformed to the insertion hole 131 side by the coupling force, and this deformation is caused. As a result, there is a possibility that a defect (such as peeling of a mounted component on the semiconductor substrate) may occur in the substrate 110 or the heat sink 120.

しかし、本実施形態の固定構造１００においては、雌ネジ部品１４０の先端部１４３が、第一の貫通孔１１１を貫通して挿通孔１３１内に侵入し、ヒートシンク１２０に当接している。これにより、第二の胴部１４２が、基板１１０とヒートシンク１２０との間の挿通孔１３１を保持するスペーサーの役割を果たす。よって、挿通孔１３１を介して対向配置された基板１１０およびヒートシンク１２０をネジ止めする場合でも、これらの部材に反りが生じにくくなる。   However, in the fixing structure 100 of the present embodiment, the front end portion 143 of the female screw component 140 penetrates the first through hole 111 and enters the insertion hole 131 and is in contact with the heat sink 120. Thus, the second body 142 serves as a spacer that holds the insertion hole 131 between the substrate 110 and the heat sink 120. Therefore, even when the board 110 and the heat sink 120 that are disposed to face each other through the insertion hole 131 are screwed, these members are less likely to warp.

以下、図２ないし５を用いて、基板１１０とヒートシンク１２０との固定方法について説明する。本実施形態に係る固定方法は、第一ないし第三のステップを含む。   Hereinafter, a method of fixing the substrate 110 and the heat sink 120 will be described with reference to FIGS. The fixing method according to the present embodiment includes first to third steps.

図２は、本実施形態に係る固定方法の第一のステップを説明する断面図である。図２（ａ）は、治具２１０の上に基板１１０を載置した状態を示す断面図であり、図２（ｂ）は、治具２１０の上に載置された基板１１０の第一の貫通孔１１１に雌ネジ部品１４０を圧入した状態を示す断面図である。図５は、雌ネジ部品１４０を第一の貫通孔１１１に圧入する際に用いられる治具２１０ａないし２１０ｄを説明する図である。図５（ａ）および（ｂ）は、基板１１０が治具２１０ａないし２１０ｄの上に載置された状態を示す上視図および斜視図をそれぞれ示す。   FIG. 2 is a cross-sectional view illustrating a first step of the fixing method according to the present embodiment. FIG. 2A is a cross-sectional view showing a state where the substrate 110 is placed on the jig 210, and FIG. 2B is a first view of the substrate 110 placed on the jig 210. It is sectional drawing which shows the state which press-fitted the internal thread component 140 to the through-hole 111. FIG. FIG. 5 is a diagram for explaining jigs 210 a to 210 d used when the female screw component 140 is press-fitted into the first through hole 111. FIGS. 5A and 5B are respectively a top view and a perspective view showing a state where the substrate 110 is placed on the jigs 210a to 210d.

第一のステップでは、基板１１０の第一の貫通孔１１１に雌ネジ部品１４０を圧入し、雌ネジ部品１４０の先端部１４３を、第一の貫通孔１１１の外側に突出させる。第一のステップは、例えば、載置ステップと、圧入ステップと、を含む。   In the first step, the female screw component 140 is press-fitted into the first through hole 111 of the substrate 110, and the tip portion 143 of the female screw component 140 is protruded to the outside of the first through hole 111. The first step includes, for example, a placement step and a press-fitting step.

図２（ａ）に示すように、載置ステップでは、基板１１０を載置する載置面２１１上に、雌ネジ部品１４０の先端部１４３を挿入可能な挿入孔２１２を有する治具２１０を用意する。そして、治具２１０の載置面２１１上に、挿入孔２１２と第一の貫通孔１１１とを位置決めした状態で基板１１０を載置する。挿入孔２１２の深さは、例えば、雌ネジ部品１４０を基板１１０の第一の貫通孔１１１に圧入した時に、雌ネジ部品１４０の先端部１４３が挿入孔２１２の底面と干渉しない深さに設定される。   As shown in FIG. 2A, in the placing step, a jig 210 having an insertion hole 212 into which the tip 143 of the female screw component 140 can be inserted is prepared on the placement surface 211 on which the substrate 110 is placed. To do. Then, the substrate 110 is placed on the placement surface 211 of the jig 210 with the insertion hole 212 and the first through hole 111 positioned. The depth of the insertion hole 212 is set to such a depth that, for example, the distal end portion 143 of the female screw component 140 does not interfere with the bottom surface of the insertion hole 212 when the female screw component 140 is press-fitted into the first through hole 111 of the substrate 110. Is done.

図５（ａ）および（ｂ）に示すように、本実施形態では、基板１１０の複数の箇所に第一の貫通孔１１１（図５では、符号１１１ａないし１１１ｄで示す）が形成され、基板１１０とヒートシンク１２０とが複数箇所でネジ止めされる。載置ステップでは、個々の第一の貫通孔１１１ごとに、別々の治具２１０（図５では、符号２１０ａないし２１０ｄで示す）が用意され、個々の第一の貫通孔１１１ごとに、第一の貫通孔１１１と治具２１０の挿入孔２１２との位置決めが行われる。この構成によれば、個々の治具２１０の位置を別個独立に調整できるため、個々の第一の貫通孔１１１ごとに、正確な位置決めを行うことができる。   As shown in FIGS. 5A and 5B, in this embodiment, first through holes 111 (indicated by reference numerals 111a to 111d in FIG. 5) are formed at a plurality of locations on the substrate 110, and the substrate 110 is formed. And the heat sink 120 are screwed at a plurality of locations. In the placing step, a separate jig 210 (indicated by reference numerals 210a to 210d in FIG. 5) is prepared for each individual first through hole 111, and the first jig is provided for each first through hole 111. The through hole 111 and the insertion hole 212 of the jig 210 are positioned. According to this configuration, since the positions of the individual jigs 210 can be adjusted independently, accurate positioning can be performed for each of the first through holes 111.

図２（ｂ）に示すように、圧入ステップでは、載置面２１１上に載置された基板１１０の第一の貫通孔１１１に、載置面２１１側とは反対側から雌ネジ部品１４０を圧入し、雌ネジ部品１４０の先端部１４３を第一の貫通孔１１１の外側の挿入孔２１２内に貫通させる。   As shown in FIG. 2B, in the press-fitting step, the female screw component 140 is inserted into the first through hole 111 of the substrate 110 placed on the placement surface 211 from the side opposite to the placement surface 211 side. Press-fitting is performed, and the distal end portion 143 of the female screw component 140 is passed through the insertion hole 212 outside the first through hole 111.

圧入ステップでは、例えば、第一の貫通孔１１１の周囲にスペーサー２２０を配置した状態で、加圧部材２３０を雌ネジ部品１４０の治具２１０側とは反対側の面に接触させ、加圧部材２３０をスペーサー２２０と当接する位置まで治具２１０側に押し付けることにより、雌ネジ部品１４０を第一の貫通孔１１１に圧入する。   In the press-fitting step, for example, in a state where the spacer 220 is disposed around the first through-hole 111, the pressing member 230 is brought into contact with the surface opposite to the jig 210 side of the female screw part 140, thereby pressing the pressing member. The female screw part 140 is press-fitted into the first through hole 111 by pressing 230 to the jig 210 side to a position where it contacts the spacer 220.

スペーサー２２０の高さは、例えば、第一の胴部１４１の高さと等しい高さに設定される。スペーサー２２０の高さを調節することにより、第一の貫通孔１１１から突出する雌ネジ部品１４０の突出量を精密に制御することができる。   The height of the spacer 220 is set to a height equal to the height of the first body 141, for example. By adjusting the height of the spacer 220, the protruding amount of the female screw component 140 protruding from the first through hole 111 can be precisely controlled.

雌ネジ部品１４０を第一の貫通孔１１１に圧入すると、基板１１０の一部が塑性変形し、第二の胴部１４２の外周面に設けられた溝１４４に充填される。これにより、雌ネジ部品１４０が基板１１０に対して強固に固定される。   When the female screw component 140 is press-fitted into the first through-hole 111, a part of the substrate 110 is plastically deformed and filled in the groove 144 provided on the outer peripheral surface of the second body 142. As a result, the female screw component 140 is firmly fixed to the substrate 110.

図３は、本実施形態に係る固定方法の第二のステップを説明する断面図である。図３（ａ）は、基板１１０とヒートシンク１２０とが対向配置された状態を示す断面図であり、図３（ｂ）は、基板１１０が放熱シート１３０を挟んでヒートシンク１２０上に載置された状態を示す断面図である。   FIG. 3 is a cross-sectional view illustrating a second step of the fixing method according to the present embodiment. 3A is a cross-sectional view showing a state in which the substrate 110 and the heat sink 120 are arranged to face each other, and FIG. 3B is a diagram in which the substrate 110 is placed on the heat sink 120 with the heat dissipation sheet 130 interposed therebetween. It is sectional drawing which shows a state.

第二のステップにおいては、例えば、まず図３（ａ）に示すように、第二の貫通孔１２１と挿通孔１３１とを位置決めして、放熱シート１３０をヒートシンク１２０の上に設ける。次に、図３（ｂ）に示すように、基板１１０の第一の貫通孔１１１に圧入された雌ネジ部品１４０のネジ孔（不図示）と、ヒートシンク１２０の第二の貫通孔１２１とを位置決めして、基板１１０とヒートシンク１２０とを対向配置し、第一の貫通孔１１１の外側に突出した雌ネジ部品１４０の先端部１４３をヒートシンク１２０に当接させる。   In the second step, for example, first, as shown in FIG. 3A, the second through hole 121 and the insertion hole 131 are positioned, and the heat radiating sheet 130 is provided on the heat sink 120. Next, as shown in FIG. 3B, a screw hole (not shown) of the female screw component 140 press-fitted into the first through hole 111 of the substrate 110 and a second through hole 121 of the heat sink 120 are provided. After positioning, the substrate 110 and the heat sink 120 are arranged to face each other, and the tip portion 143 of the female screw component 140 protruding outside the first through hole 111 is brought into contact with the heat sink 120.

図４は、本実施形態に係る固定方法の第三のステップを説明する断面図である。   FIG. 4 is a cross-sectional view illustrating a third step of the fixing method according to the present embodiment.

第三のステップでは、雄ネジ部品１５０をヒートシンク１２０側から第二の貫通孔１２１に挿入し、ヒートシンク１２０と当接した雌ネジ部品１４０と螺合させる。   In the third step, the male screw component 150 is inserted into the second through hole 121 from the heat sink 120 side, and is screwed with the female screw component 140 in contact with the heat sink 120.

螺合が行われる間、第二の胴部１４２は、雄ネジ部品１５０によってヒートシンク１２０に当接したまま固定される。螺合によって第二の胴部１４２が雄ネジ１５０側へと移動しないため、基板１１０はヒートシンク１２０側へと引き寄せられず、基板１１０とヒートシンク１２０との間の挿通孔１３１によって形成されるギャップは保持され続ける。これにより、挿通孔１３１を介して対向配置された基板１１０とヒートシンク１２０とをネジ止めしても、これらの部材に反りが生じにくくなる。   While the screwing is performed, the second body 142 is fixed while being in contact with the heat sink 120 by the male screw component 150. Since the second body 142 does not move to the male screw 150 side due to the screwing, the substrate 110 is not drawn toward the heat sink 120 side, and the gap formed by the insertion hole 131 between the substrate 110 and the heat sink 120 is Continue to be retained. Thereby, even if the board | substrate 110 and heat sink 120 which are opposingly arranged through the insertion hole 131 are screwed, it becomes difficult to produce a curvature to these members.

以上説明した本実施形態の固定構造においては、雌ネジ部品１４０の第二の胴部１４２を基板１１０から突出させ、その先端部１４３をヒートシンク１２０に当接させている。そのため、第二の胴部１４２が挿通孔１３１によって形成されるギャップを保持するスペーサーの役割を果たす。よって、ギャップを介して対向配置された基板１１０およびヒートシンク１２０をネジ止めする場合に、これらの部材に反りが発生しにくい。   In the fixing structure of the present embodiment described above, the second body 142 of the female screw component 140 is protruded from the substrate 110, and the tip 143 is in contact with the heat sink 120. Therefore, the second body 142 serves as a spacer that holds a gap formed by the insertion hole 131. Therefore, when the board | substrate 110 and heat sink 120 which are opposingly arranged through the gap are screwed, these members do not easily warp.

また、本実施形態の固定構造においては、雌ネジ部品１４０を第一の貫通孔１１１に圧入したときに基板１１０の一部が塑性変形し、第二の胴部１４２の外周面に設けられた溝１４４に充填される。これにより、雌ネジ部品１４０を基板１１０に強固に固定することができる。   Further, in the fixing structure of the present embodiment, when the female screw part 140 is press-fitted into the first through hole 111, a part of the substrate 110 is plastically deformed and provided on the outer peripheral surface of the second body 142. The groove 144 is filled. Thereby, the female screw component 140 can be firmly fixed to the substrate 110.

また、本実施形態の固定方法においては、治具２１０の載置面２１１に、雌ネジ部品１４０の先端部を挿入可能な挿入孔２１２が設けられている。よって、第一の貫通孔１１１に雌ネジ部品１４０を圧入したときに、雌ネジ部品１４０の先端部１４３を、第一の貫通孔１１１の外側に確実に突出させることができる。   In the fixing method of the present embodiment, the insertion surface 212 of the jig 210 is provided with an insertion hole 212 into which the tip of the female screw component 140 can be inserted. Therefore, when the female screw component 140 is press-fitted into the first through hole 111, the tip end portion 143 of the female screw component 140 can be reliably protruded outside the first through hole 111.

また、本実施形態の固定方法においては、第一の貫通孔１１１の周囲にスペーサー２２０を配置した状態で、加圧部材２３０を雌ネジ部品１４０の治具２１０側とは反対側の面に接触させ、加圧部材２３０をスペーサー２２０と当接する位置まで治具２１０側に押し付ける。よって、第一の貫通孔１１１から突出する雌ネジ部品１４０の突出量を、精密に制御することができる。   In the fixing method of the present embodiment, the pressure member 230 is brought into contact with the surface of the female screw part 140 opposite to the jig 210 side in a state where the spacer 220 is disposed around the first through hole 111. The pressing member 230 is pressed to the jig 210 side to a position where the pressing member 230 comes into contact with the spacer 220. Therefore, the protruding amount of the female screw component 140 protruding from the first through hole 111 can be precisely controlled.

また、本実施形態の固定方法においては、個々の第一の貫通孔１１１ごとに別々の治具２１０が用意され、個々の第一の貫通孔１１１ごとに治具２１０の挿入孔２１２との位置決めが行われる。そのため、複数の第一の貫通孔１１１の位置が製造誤差によって若干ずれていても、複数の治具２１０の挿入孔２１２の位置を複数の第一の貫通孔１１１に対して正確に位置決めすることができる。   Further, in the fixing method of the present embodiment, a separate jig 210 is prepared for each first through hole 111, and the positioning of the jig 210 with the insertion hole 212 is made for each first through hole 111. Is done. Therefore, even if the positions of the plurality of first through holes 111 are slightly shifted due to manufacturing errors, the positions of the insertion holes 212 of the plurality of jigs 210 are accurately positioned with respect to the plurality of first through holes 111. Can do.

［第二実施形態］
以下、図６を用いて、本発明の第二実施形態に係る固定方法について説明する。以下、図１ないし５と共通する構成要素については同じ符号を付し、その詳細な説明は省略する。 [Second Embodiment]
Hereinafter, the fixing method according to the second embodiment of the present invention will be described with reference to FIG. Hereinafter, the same reference numerals are given to the same components as those in FIGS. 1 to 5, and the detailed description thereof will be omitted.

図６は、本実施形態に係る固定方法で用いられる治具２１０Ｐを説明するための図である。第一実施形態においては、複数の第一の貫通孔１１１ごとに複数の治具が用意されたが、本実施形態では、複数の第一の貫通孔１１１に対応する複数の挿入孔（図示略）を有する単一の治具２１０Ｐが用意される。この点において、第一実施形態と大いに異なる。   FIG. 6 is a view for explaining a jig 210P used in the fixing method according to the present embodiment. In the first embodiment, a plurality of jigs are prepared for each of the plurality of first through holes 111. However, in this embodiment, a plurality of insertion holes (not shown) corresponding to the plurality of first through holes 111 are provided. ) Having a single jig 210P. In this respect, it is very different from the first embodiment.

本実施形態の固定方法は、単一の治具２１０Ｐと基板１１０との間で位置決めが行われる点を除いては、第一実施形態の固定方法と同じである。本実施形態では、治具２１０の位置決め作業が一回で済むため、作業時間が短縮される。   The fixing method of the present embodiment is the same as the fixing method of the first embodiment except that positioning is performed between the single jig 210P and the substrate 110. In the present embodiment, the jig 210 is positioned once, so the work time is shortened.

以上、添付図面を参照しながら本発明に係る好適な実施の形態例について説明したが、本発明は係る例に限定されないことは言うまでもない。上述した例において示した各構成部材の諸形状や組み合わせ等は一例であって、本発明の主旨から逸脱しない範囲において設計要求等に基づき種々変更可能である。   The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, but it goes without saying that the present invention is not limited to such examples. Various shapes, combinations, and the like of the constituent members shown in the above-described examples are examples, and various modifications can be made based on design requirements and the like without departing from the gist of the present invention.

例えば、上記の実施形態では、基板１１０とヒートシンク１２０とをネジ止めする構造および方法を説明したが、本発明の固定構造および固定方法はこれに限定されない。ネジ止めされる部材は、基板１１０やヒートシンク１２０に限られず、様々な部材の固定構造および固定方法に本発明の固定構造および固定方法を用いることができる。   For example, in the above embodiment, the structure and method for screwing the substrate 110 and the heat sink 120 are described, but the fixing structure and fixing method of the present invention are not limited to this. The member to be screwed is not limited to the substrate 110 or the heat sink 120, and the fixing structure and fixing method of the present invention can be used for the fixing structure and fixing method of various members.

１１０…基板（第一の部材）、１１１，１１１ａ，１１１ｂ，１１１ｃ，１１１ｄ…第一の貫通孔、１２０…ヒートシンク（第二の部材）、１２１…第二の貫通孔、１３０…放熱シート（第三の部材）、１３１…挿通孔（ギャップ）、１４０…雌ネジ部品、１４１…第一の胴部、１４２…第二の胴部、１４３…先端部、１４４…溝、１５０…雄ネジ部品、２１０…治具、２１１…載置面、２１２…挿入孔、２２０…スペーサー、２３０…加圧部材 110 ... Substrate (first member), 111, 111a, 111b, 111c, 111d ... first through hole, 120 ... heat sink (second member), 121 ... second through hole, 130 ... heat dissipation sheet (first) (Third member), 131 ... insertion hole (gap), 140 ... female screw part, 141 ... first body part, 142 ... second body part, 143 ... tip part, 144 ... groove, 150 ... male screw part, 210 ... Jig, 211 ... Placement surface, 212 ... Insertion hole, 220 ... Spacer, 230 ... Pressure member

Claims (8)

第一の貫通孔が形成された第一の部材と、前記第一の貫通孔と対向する位置に第二の貫通孔が形成された第二の部材と、を、前記第一の部材と前記第二の部材との間に挟まれて、前記第一の部材及び前記第二の部材に密着して配置されるシート状の第三の部材に形成され、前記第一の貫通孔と前記第二の貫通孔とに位置合わせされた挿通孔を介して対向配置し、前記第一の部材と前記第二の部材とを雄ネジ部品と雌ネジ部品とを用いて固定する固定構造であって、
前記雌ネジ部品は、前記第一の部材側から前記第一の貫通孔に圧入され、前記雌ネジ部品の先端部が、前記第一の貫通孔を貫通して前記挿通孔内に侵入し、前記第二の部材に当接しており、前記雄ネジ部品は、前記第二の部材側から前記第二の貫通孔に挿入され、前記第二の部材と当接した前記雌ネジ部品と螺合している固定構造。 A first member in which a first through hole is formed, and a second member in which a second through hole is formed at a position facing the first through hole, the first member and the Formed between the first member and the sheet-like third member disposed in close contact with the second member, the first through hole and the first member A fixing structure in which the first member and the second member are fixed to each other through an insertion hole aligned with the second through-hole, using a male screw part and a female screw part. ,
The female screw component is press-fitted into the first through hole from the first member side, and the tip of the female screw component penetrates the first through hole and enters the insertion hole , The male screw component is in contact with the second member, and the male screw component is inserted into the second through-hole from the second member side and screwed with the female screw component in contact with the second member. Fixed structure. 前記第三の部材はシリコーンゴムで形成された放熱シートである、請求項１に記載の固定構造。The fixing structure according to claim 1, wherein the third member is a heat dissipation sheet formed of silicone rubber. 前記雌ネジ部品は、前記第一の貫通孔よりも大きい直径を有する第一の胴部と、前記第一の胴部の直径よりも小さい直径を有し、前記第一の胴部の一端側から延びる第二の胴部と、を含み、
前記第二の胴部の前記第一の胴部とは反対側の端部が、前記第一の貫通孔を貫通して前記挿通孔内に侵入し、前記第二の部材に当接している請求項１または２に記載の固定構造。 The female screw part has a first body portion having a diameter larger than that of the first through hole, a diameter smaller than the diameter of the first body portion, and one end side of the first body portion A second torso extending from,
An end of the second body portion opposite to the first body portion penetrates the first through hole and enters the insertion hole , and is in contact with the second member. The fixing structure according to claim 1 or 2 . 前記第二の胴部の外周面には、前記外周面の周方向に沿う溝が形成されている請求項３に記載の固定構造。 The fixing structure according to claim 3 , wherein a groove is formed on an outer peripheral surface of the second body portion along a circumferential direction of the outer peripheral surface. 第一の貫通孔が形成された第一の部材と、前記第一の貫通孔と対向する位置に第二の貫通孔が形成された第二の部材と、を、前記第一の部材と前記第二の部材との間に挟まれて、前記第一の部材及び前記第二の部材に密着して配置されるシート状の第三の部材に形成され、前記第一の貫通孔と前記第二の貫通孔とに位置合わせされた挿通孔を介して対向配置し、前記第一の部材と前記第二の部材とを雄ネジ部品と雌ネジ部品とを用いて固定する固定方法であって、
前記第一の部材の前記第一の貫通孔に前記雌ネジ部品を圧入し、前記雌ネジ部品の先端部を、前記第一の貫通孔の外側に突出させる第一のステップと、
前記雌ネジ部品が前記第一の貫通孔に圧入された前記第一の部材を前記挿通孔を介して前記第二の部材と対向配置し、前記第一の貫通孔の外側に突出した前記雌ネジ部品の先端部を前記第二の部材に当接させる第二のステップと、
前記雄ネジ部品を前記第二の部材側から前記第二の貫通孔に挿入し、前記第二の部材と当接した前記雌ネジ部品と螺合させる第三のステップと、
を含む固定方法。 A first member in which a first through hole is formed, and a second member in which a second through hole is formed at a position facing the first through hole, the first member and the Formed between the first member and the sheet-like third member disposed in close contact with the second member, the first through hole and the first member face disposed through the second through hole and the aligned through holes, and said second member and said first member to a fixing method for fixing with the male threaded part and female threaded part ,
A first step in which the female screw component is press-fitted into the first through hole of the first member, and a tip portion of the female screw component is protruded to the outside of the first through hole;
The female member in which the female screw part is press-fitted into the first through hole and is opposed to the second member via the insertion hole , and protrudes outside the first through hole. A second step of bringing the tip of the screw part into contact with the second member;
A third step of inserting the male screw component into the second through hole from the second member side and screwing with the female screw component in contact with the second member;
Including fixing method. 前記第一のステップは、
前記第一の部材を載置する載置面上に、前記雌ネジ部品の先端部を挿入可能な挿入孔を有する治具を用意し、前記治具の前記載置面上に、前記挿入孔と前記第一の貫通孔とを位置決めした状態で前記第一の部材を載置する載置ステップと、
前記載置面上に載置された前記第一の部材の前記第一の貫通孔に、前記載置面側とは反対側から前記雌ネジ部品を圧入し、前記雌ネジ部品の先端部を前記第一の貫通孔の外側の前記挿入孔内に貫通させる圧入ステップと、を含む請求項５に記載の固定方法。 The first step includes
A jig having an insertion hole into which a tip end portion of the female screw part can be inserted is prepared on a placement surface on which the first member is placed, and the insertion hole is provided on the placement surface of the jig. And placing the first member in a state where the first through hole is positioned,
The female screw component is press-fitted into the first through hole of the first member placed on the placement surface from the side opposite to the placement surface, and the tip of the female screw component is fixing method of claim 5 including, a press-fitting step of penetrating into the insertion hole of the outside of the first through hole. 前記第一の部材の複数の箇所に前記第一の貫通孔が形成されており、
前記載置ステップでは、個々の前記第一の貫通孔ごとに別々の前記治具が用意され、個々の前記第一の貫通孔ごとに、前記第一の貫通孔と前記治具の挿入孔との位置決めが行われる請求項６に記載の固定方法。 The first through hole is formed in a plurality of locations of the first member,
In the placing step, a separate jig is prepared for each of the first through holes, and the first through hole and the jig insertion hole are provided for each of the first through holes. The fixing method according to claim 6 , wherein positioning is performed. 前記圧入ステップでは、前記第一の貫通孔の周囲にスペーサーを配置した状態で、加圧部材を前記雌ネジ部品の前記治具側とは反対側の面に接触させ、前記加圧部材を前記スペーサーと当接する位置まで前記治具側に押し付けることにより、前記雌ネジ部品を前記第一の貫通孔に圧入する請求項６または７に記載の固定方法。 In the press-fitting step, with the spacer disposed around the first through hole, the pressure member is brought into contact with the surface of the female screw part opposite to the jig side, and the pressure member is The fixing method according to claim 6 or 7 , wherein the female screw part is press-fitted into the first through hole by being pressed to the jig side to a position in contact with a spacer.
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