JP6564274B2 - heatsink - Google Patents
heatsink Download PDFInfo
- Publication number
- JP6564274B2 JP6564274B2 JP2015162641A JP2015162641A JP6564274B2 JP 6564274 B2 JP6564274 B2 JP 6564274B2 JP 2015162641 A JP2015162641 A JP 2015162641A JP 2015162641 A JP2015162641 A JP 2015162641A JP 6564274 B2 JP6564274 B2 JP 6564274B2
- Authority
- JP
- Japan
- Prior art keywords
- heat
- fin
- groove
- base
- folded
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000017525 heat dissipation Effects 0.000 claims description 33
- 230000005855 radiation Effects 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 15
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 13
- 238000005452 bending Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Images
Description
この発明は、民生用、産業用を問わずあらゆる分野の発熱部材に用いられ、発熱部材の構成要素である発熱体、例えば電子機器においては電子部品から発せられる熱を放熱するヒートシンクおよびその製造方法に関する。 The present invention is used for a heat generating member in any field regardless of consumer use or industrial use, and is a heat generating element that is a component of the heat generating member, for example, a heat sink that dissipates heat generated from an electronic component in an electronic device, and a manufacturing method thereof About.
従来、電子部品を冷却するヒートシンクとしては、板状の放熱ベースと、放熱ベースの片面に立ち上がり状にかつ並列状に一体成形された複数の板状放熱フィンとよりなるアルミニウム押出形材製のものが用いられていた。 Conventionally, as a heat sink for cooling electronic components, an aluminum extruded shape made up of a plate-shaped heat radiation base and a plurality of plate-shaped heat radiation fins integrally formed in a rising shape and in parallel on one side of the heat radiation base Was used.
しかしながら、最近では、電子部品などからなる発熱体の高性能化に伴って発熱量が著しく増大しており、ヒートシンクの高性能化が求められているが、従来のアルミニウム押出形材製ヒートシンク場合、その製法上、隣接する放熱フィン間の間隔（フィン間隔）に対する放熱フィンの高さ（フィン高さ）の比であるトング比（フィン高さ／フィン間隔）に上限があり、フィン間隔を小さくかつフィン高さを大きくすることができないので、高性能化の要求に応じきれていないという問題があった。 However, recently, the amount of heat generation has increased remarkably with the improvement in performance of heating elements composed of electronic components, etc., and there has been a demand for higher performance in heat sinks. In the manufacturing method, there is an upper limit to the tong ratio (fin height / fin interval), which is the ratio of the height (fin height) of the radiating fin to the interval between adjacent radiating fins (fin interval), and the fin interval is reduced and Since the fin height cannot be increased, there is a problem that it cannot meet the demand for higher performance.
そこで、このような問題を解決したヒートシンクとして、放熱ベースに放熱フィンを嵌め入れ、放熱ベースを押圧して固定するヒートシンクの需要が増えてきた。 Therefore, as a heat sink that solves such problems, there has been an increasing demand for a heat sink in which a heat radiating fin is fitted into the heat radiating base and the heat radiating base is pressed and fixed.
放熱ベースを押圧して放熱フィンを固定するヒートシンクとして、例えば、板状の放熱ベースに複数の溝が並列状に形成され、各溝内に放熱フィンの一端部が嵌め入れられ、放熱ベースにおける溝の両側壁を押圧することにより、放熱フィンが放熱ベースに固定されたものが提案されている（特許文献１参照）。 As a heat sink that presses the heat radiating base and fixes the heat radiating fins, for example, a plurality of grooves are formed in parallel in a plate-shaped heat radiating base, and one end of the heat radiating fin is fitted in each groove, and the groove in the heat radiating base The thing by which the radiation fin was fixed to the thermal radiation base by pressing the both side walls of this is proposed (refer patent document 1).
このようなヒートシンクは、放熱ベースに圧力を加え塑性変形させて放熱ベースに放熱フィンを固定している。 In such a heat sink, pressure is applied to the heat radiating base to cause plastic deformation, and the heat radiating fins are fixed to the heat radiating base.
しかし、放熱ベースが塑性変形する前後において、その形状はほとんど変わらないため、外観視によって放熱フィンが放熱ベースに固定されているか否かを判断することは困難である。さらに、放熱ベースを大きな力で押圧して塑性変形させるため、放熱ベースを押圧する部品の寿命が短くなる。 However, before and after the heat radiating base is plastically deformed, the shape thereof hardly changes. Therefore, it is difficult to determine whether or not the heat radiating fins are fixed to the heat radiating base by appearance. Furthermore, since the heat radiating base is pressed with a large force to be plastically deformed, the life of the parts that press the heat radiating base is shortened.
この発明の目的は、上記問題を解決し、放熱フィンが放熱ベースに固定されていることを容易に判断することができ、さらに、放熱ベースを押圧して塑性変形させる力よりも小さい力で放熱フィンを固定することができるヒートシンクを提供することある。 The object of the present invention is to solve the above-mentioned problems, easily determine that the radiating fin is fixed to the radiating base, and further radiate heat with a force smaller than the force of pressing the radiating base to plastically deform it. A heat sink capable of fixing fins may be provided.
１）並列状に設けられた複数の溝部を有する金属展伸材製放熱ベースと、一端部が放熱ベースの溝部に嵌め入れられて放熱ベースに対して立ち上がり状に設けられた金属展伸材製放熱フィンとを備えるヒートシンクであって、放熱フィンは、フィン本体と、フィン本体の一端部がＵターン状に折り曲げられることにより形成された折り返し部とからなり、フィン本体と折り返し部との重ね合わせにより形成された重ね合わせ部が放熱ベースの溝部に収容され、折り返し部の先端が放熱ベースの溝部内に入っているとともに放熱フィンの重ね合わせ部が放熱ベースの溝部の左右両側面間に突っ張り放熱フィンが放熱ベースに固定されているヒートシンク。 1) A heat-extending base made of a metal wrought material having a plurality of grooves provided in parallel, and a metal wrought material provided in a standing manner with respect to the heat radiating base with one end fitted into the groove of the heat radiating base. A heat sink comprising a heat radiating fin, the heat radiating fin comprising a fin main body and a folded portion formed by bending one end of the fin main body into a U-turn shape, and the fin main body and the folded portion are overlapped. The overlapping part formed by the above is housed in the groove part of the heat dissipation base, the tip of the folded part is in the groove part of the heat dissipation base, and the overlapping part of the heat dissipation fins stretches between the left and right side surfaces of the groove part of the heat dissipation base A heat sink in which fins are fixed to the heat dissipation base.
２）折り返し部に貫通孔が空けられている１）記載のヒートシンク。 2) The heat sink according to 1), wherein a through hole is formed in the folded portion.
３）上記１）のヒートシンクを製造する方法であって、溝部を有する金属展伸材製放熱ベースと、金属展伸材製放熱フィン用板材とを用意し、放熱フィン用板材の一端部をＵターン状に折り曲げることにより、フィン本体と、フィン本体の一端部に連なりかつ放熱ベースの溝部から突出する高さを有する折り返し部とからなる放熱フィンを形成し、フィン本体と折り返し部とを重ね合わせて形成した重ね合わせ部を溝部に収容し、折り返し部を先端側から溝部の底方向へ押圧して塑性変形させ、折り返し部の先端を溝部内に入れるとともに重ね合わせ部を溝部の左右両側面間に突っ張らせ放熱フィンを放熱ベースに固定するヒートシンクの製造方法。 3) A method of manufacturing the heat sink according to 1) above, comprising preparing a metal extended material heat radiation base having a groove and a metal expanded material heat radiation fin plate, and connecting one end of the heat radiation fin plate material to U By folding in a turn shape, a heat dissipating fin is formed which consists of a fin body and a folded portion connected to one end of the fin body and protruding from the groove portion of the heat dissipating base, and the fin body and the folded portion are overlapped. The overlapping part formed in this way is accommodated in the groove part, and the folded part is pressed from the tip side toward the bottom of the groove part to be plastically deformed, the tip of the folded part is put into the groove part, and the overlapping part is placed between the left and right side surfaces of the groove part. A method of manufacturing a heat sink in which a heat radiating fin is fixed to a heat radiating base.
４）放熱フィン用板材の一端部を折り曲げる前に折り返し部となる部分に貫通孔を空けておく３）記載のヒートシンクの製造方法。 4) The method for producing a heat sink according to 3), wherein a through-hole is formed in a portion that becomes a folded portion before bending one end portion of the heat radiating fin plate.
５）折り返し部の放熱ベースの溝部から突出した高さが０．５ｍｍ以下である３）または４）記載のヒートシンクの製造方法。 5) The method for producing a heat sink according to 3) or 4), wherein the height of the folded portion protruding from the groove portion of the heat dissipation base is 0.5 mm or less.
上記１）記載のヒートシンクによれば、放熱フィンは、フィン本体と、フィン本体の一端部がＵターン状に折り曲げられることにより形成された折り返し部とからなり、フィン本体と折り返し部との重ね合わせにより形成された重ね合わせ部が放熱ベースの溝部に収容され、折り返し部の先端が放熱ベースの溝部内に入っているとともに放熱フィンの重ね合わせ部が放熱ベースの溝部の左右両側面間に突っ張り放熱フィンが放熱ベースに固定されているので、放熱ベースを押圧して放熱フィンを放熱ベースに固定する場合に比べて、押圧する力が小さくてすみ押圧する部品の寿命を長くすることができる。 According to the heat sink described in 1) above, the radiating fin includes a fin main body and a folded portion formed by folding one end of the fin main body into a U-turn shape, and the fin body and the folded portion are overlapped. The overlapping part formed by the above is housed in the groove part of the heat dissipation base, the tip of the folded part is in the groove part of the heat dissipation base, and the overlapping part of the heat dissipation fins stretches between the left and right side surfaces of the groove part of the heat dissipation base Since the fin is fixed to the heat radiating base, the pressing force is small and the life of the part to be pressed can be extended as compared with the case where the heat radiating base is pressed to fix the heat radiating fin to the heat radiating base.
上記２）記載のヒートシンクによれば、折り返し部に貫通孔が空けられているので、放熱フィンの折り返し部を先端側から放熱ベースの溝部の底方向に押圧した際に、折り返し部が塑性変形し易くなり、貫通孔が形成されていない場合に比べて、小さい力で放熱フィンの重ね合わせ部が放熱ベースの溝部の左右両側面間に突っ張ることができる。 According to the heat sink described in 2) above, since the through hole is formed in the folded portion, when the folded portion of the radiating fin is pressed from the tip side toward the bottom of the groove portion of the radiating base, the folded portion is plastically deformed. As compared with the case where the through hole is not formed, the overlapping portion of the radiating fins can be stretched between the left and right side surfaces of the groove portion of the radiating base with a small force.
上記３）記載のヒートシンクの製造方法によれば、溝部を有する金属展伸材製放熱ベースと、金属展伸材製放熱フィン用板材とを用意し、放熱フィン用板材の一端部をＵターン状に折り曲げることにより、フィン本体と、フィン本体の一端部に連なりかつ放熱ベースの溝部から突出する高さを有する折り返し部とからなる放熱フィンを形成し、フィン本体と折り返し部とを重ね合わせて形成した重ね合わせ部を溝部に収容し、折り返し部を先端側から溝部の底方向へ押圧して塑性変形させ、折り返し部の先端を溝部内に入れるとともに重ね合わせ部を溝部の左右両側面間に突っ張らせ放熱フィンを放熱ベースに固定するので、外観視で放熱フィンが放熱ベースに固定されているか否かを容易に判断することができる。 According to the method for manufacturing a heat sink described in 3) above, a heat-radiating base made of a wrought metal material having a groove and a heat radiating fin plate made of a metal wrought material are prepared, and one end portion of the heat radiating fin plate material has a U-turn shape. To form a heat dissipation fin consisting of a fin body and a folded portion connected to one end of the fin body and projecting from the groove portion of the heat dissipation base, and the fin body and the folded portion are overlapped. The overlapped portion is accommodated in the groove portion, the folded portion is pressed from the tip side toward the bottom of the groove portion to be plastically deformed, the tip of the folded portion is put into the groove portion, and the overlapped portion is stretched between the left and right side surfaces of the groove portion. Since the radiating fins are fixed to the radiating base, it is possible to easily determine whether the radiating fins are fixed to the radiating base from an external view.
すなわち、放熱フィンの折り返し部が放熱ベースの溝部に嵌め入れられた状態において、折り返し部の先端が溝部から突出している場合、折り返し部が押圧されていないので放熱フィンの重ね合わせ部が放熱ベースの溝部の左右両側間に突っ張っておらず、放熱フィンが放熱ベースに固定されていないことが外観視で判断でき、折り返し部の先端が溝部内に入っている場合、折り返し部が押圧されているので放熱フィンの重ね合わせ部が塑性変形により放熱ベースの溝部の左右両側間に突っ張っており、放熱フィンが放熱ベースに固定されていることが外観視で判断できる。 That is, in the state where the folded portion of the radiating fin is fitted in the groove portion of the radiating base, when the tip of the folded portion protrudes from the groove portion, the folded portion is not pressed, so the overlapping portion of the radiating fin is Since it is not stretched between the left and right sides of the groove part, it can be judged from the appearance that the radiating fin is not fixed to the radiating base, and when the tip of the folded part is in the groove part, the folded part is pressed. It can be determined from an external view that the overlapping portion of the heat radiating fins is stretched between the left and right sides of the groove portion of the heat radiating base due to plastic deformation, and the heat radiating fins are fixed to the heat radiating base.
上記４）記載のヒートシンクの製造方法によれば、放熱フィン用板材の一端部を折り曲げる前に折り返し部となる部分に貫通孔を空けておくので、放熱フィンの折り返し部を先端側から放熱ベースの溝部の底方向に押圧した際に、折り返し部が塑性変形し易くなり、貫通孔が形成されていない場合に比べて、小さい力で放熱フィンの重ね合わせ部が放熱ベースの溝部の左右両側面間に突っ張ることができる。 According to the method for manufacturing a heat sink described in 4) above, since the through hole is made in the portion that becomes the folded portion before folding the one end portion of the heat radiating fin plate, the folded portion of the radiating fin is connected to the radiating base from the tip side. When pressed toward the bottom of the groove part, the folded part is easily plastically deformed, and compared with the case where no through hole is formed, the overlapping part of the radiating fin is between the left and right side surfaces of the groove part of the radiating base with a small force. Can be stretched.
上記５）記載のヒートシンクの製造方法によれば、折り返し部の先端を溝部の底方向へ押圧した際、折り返し部の先端のみが曲がることを防止することができる。したがって、折り返し部を先端側から溝部の底方向へ押圧した際、確実に折り返し部を塑性変形させ、折り返し部の先端を溝部内に入れるとともに重ね合わせ部を溝部の左右両側面間に突っ張らせ放熱フィンを放熱ベースに固定することができ、外観視で放熱フィンが放熱ベースに固定されているか否かを容易に判断することができる。 According to the heat sink manufacturing method described in 5) above, when the tip of the folded portion is pressed toward the bottom of the groove portion, only the tip of the folded portion can be prevented from bending. Therefore, when the folded portion is pressed from the tip side toward the bottom of the groove portion, the folded portion is surely plastically deformed, the tip of the folded portion is placed in the groove portion, and the overlapping portion is stretched between the left and right side surfaces of the groove portion to dissipate heat. The fins can be fixed to the heat radiating base, and it can be easily determined whether or not the heat radiating fins are fixed to the heat radiating base in appearance.
以下、この発明の実施の形態を、図面を参照して説明する。この実施形態において、図１の紙面に向かって手前側を前、紙面に向かって奥側を後といい、同図の上下を上下、左右を左右というものとする。 Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, the front side toward the paper surface of FIG. 1 is referred to as the front, and the back side toward the paper surface is referred to as the rear.
さらに、以下の説明において、「アルミニウム」という用語には、純アルミニウムの他にアルミニウム合金を含むものとする。 Furthermore, in the following description, the term “aluminum” includes aluminum alloys in addition to pure aluminum.
図１に示すように、ヒートシンク(1)は、上面がフィン取付面(2a)となされるとともに下面が受熱面(2b)となされた方形板状金属製放熱ベース(2)と、放熱ベース(2)のフィン取付面(2a)に、フィン取付面(2a)に対して立ち上がり状となりかつ左右方向に等間隔をおいて並列状となるように設けられた複数の板状金属展伸材製放熱フィン(3)とを備えている。 As shown in FIG. 1, the heat sink (1) includes a rectangular plate-shaped metal heat radiation base (2) whose upper surface is a fin mounting surface (2a) and whose lower surface is a heat receiving surface (2b), and a heat radiation base ( 2) Fin mounting surface (2a) made of a plurality of plate-shaped metal wrought materials provided so as to stand up with respect to the fin mounting surface (2a) and in parallel with equal intervals in the left-right direction And a heat dissipating fin (3).
放熱ベース(2)のフィン取付面(2a)には、前後方向に延びる複数の溝部(4)が左右方向に等間隔をおいて並列状となるように形成されている。 A plurality of grooves (4) extending in the front-rear direction are formed in the fin mounting surface (2a) of the heat dissipation base (2) so as to be arranged in parallel at equal intervals in the left-right direction.
溝部(4)の幅は、上端（開口）から下端（底）まで同一幅で形成されている。 The width of the groove (4) is the same from the upper end (opening) to the lower end (bottom).
放熱フィン(3)は、板状のフィン本体(5)と、フィン本体(5)の下端部がＵターン状に折り曲げられて形成された折り返し部(6)とから構成されている。フィン本体(5)と折り返し部(6)との重ね合わせにより形成された重ね合わせ部(7)が、溝部(4)内に嵌め入れられている。 The radiating fin (3) includes a plate-shaped fin body (5) and a folded portion (6) formed by bending the lower end of the fin body (5) into a U-turn shape. An overlapping portion (7) formed by overlapping the fin body (5) and the folded portion (6) is fitted into the groove portion (4).
折り返し部(6)の先端は、放熱フィン(3)の溝部(4)から突出していたが、先端側から溝部(4)の底方向へ押圧されて放熱フィン(3)の溝部(4)内に入った状態となっている。 The tip of the folded portion (6) protruded from the groove (4) of the radiating fin (3), but was pressed from the tip side toward the bottom of the groove (4) to be inside the groove (4) of the radiating fin (3). It has entered the state.
放熱フィン(3)の折り返し部(6)に、貫通孔(8)が前後方向に複数並べられて形成されており、この実施形態において貫通孔(8)の形状は、図４（ａ）に示す円形とされているが、この形状の他に、貫通孔の形状は、例えば、図４（ｂ）〜（ｄ）に示すように、ひし形(9)、横長楕円形(10)、縦長楕円形(11)とされてもよい。 A plurality of through holes (8) are formed in the folded portion (6) of the radiating fin (3) in the front-rear direction. In this embodiment, the shape of the through holes (8) is shown in FIG. In addition to this shape, the shape of the through hole is, for example, a rhombus (9), a horizontally long ellipse (10), a vertically long ellipse, as shown in FIGS. It may be in the form (11).
次にヒートシンク(1)の製造方法について説明する。 Next, a method for manufacturing the heat sink (1) will be described.
まず、並列状に設けられた複数の溝部(4)を有する放熱ベース(2)と、放熱フィン用板材とを用意する。 First, a heat radiating base (2) having a plurality of grooves (4) provided in parallel and a heat radiating fin plate are prepared.
放熱ベース(2)はアルミニウムや銅などの熱伝導性に優れた金属展伸材により形成されるが、アルミニウムの場合、例えば押出により形成され、銅の場合、例えば押出により形成される。 The heat dissipating base (2) is formed of a metal stretched material having excellent thermal conductivity such as aluminum or copper. In the case of aluminum, it is formed by extrusion, for example. In the case of copper, it is formed by extrusion.
放熱ベース(2)の肉厚は、３〜３０ｍｍ程度であることが好ましい。また、溝部(4)の深さは１〜２０ｍｍ程度であることが好ましい。 The thickness of the heat dissipation base (2) is preferably about 3 to 30 mm. Moreover, it is preferable that the depth of a groove part (4) is about 1-20 mm.
アルミニウムや銅などの熱伝導性に優れた金属展伸材よるなる放熱フィン用板材により放熱フィン(3)が形成される。すなわち、放熱フィン用板材の一端部をＵターン状に折り曲げることにより、フィン本体(5)と、フィン本体(5)の一端部に連なった折り返し部(6)とからなる放熱フィン(3)を形成する。フィン本体(5)の肉厚は０．１〜５ｍｍ程度であることが好ましい。 The radiating fin (3) is formed of a radiating fin plate made of a metal stretched material having excellent thermal conductivity such as aluminum or copper. That is, by folding one end of the heat radiating fin plate in a U-turn shape, the heat radiating fin (3) including the fin body (5) and the folded portion (6) connected to one end of the fin body (5) is formed. Form. The thickness of the fin body (5) is preferably about 0.1 to 5 mm.
そして、フィン本体(5)と折り返し部(6)とを重ね合わせて重ね合わせ部(7)を形成する。 Then, the fin body (5) and the folded portion (6) are overlapped to form an overlapping portion (7).
放熱フィン用板材の下端部をＵターン状に折り曲げる前に、折り返し部(6)となる部分に貫通孔(8)を折り返し部(6)の前後方向に並べて複数形成しておく。 Before the lower end portion of the heat radiating fin plate is bent into a U-turn shape, a plurality of through holes (8) are formed side by side in the front-rear direction of the folded portion (6) in the portion that becomes the folded portion (6).
折り返し部(6)の高さは、図３に示す溝部(4)の深さよりも若干高くなるように形成する。 The height of the folded portion (6) is formed to be slightly higher than the depth of the groove (4) shown in FIG.
ついで、図２および図３に示すように、放熱ベース(2)の溝部(4)の底に放熱フィン(3)の重ね合わせ部(7)の先端が当接するように重ね合わせ部(7)を溝部(4)に嵌め入れる。溝部(4)の開口幅は放熱フィン(3)の重ね合わせ部(7)の肉厚により異なるが、放熱フィン(3)の左右両面と溝部(4)の開口の両側縁との間に、それぞれ１〜５ｍｍ程度の隙間が存在することが好ましい。 Next, as shown in FIG. 2 and FIG. 3, the overlapping portion (7) so that the tip of the overlapping portion (7) of the heat radiating fin (3) abuts the bottom of the groove (4) of the heat radiating base (2). Is inserted into the groove (4). The opening width of the groove portion (4) varies depending on the thickness of the overlapping portion (7) of the radiating fin (3), but between the left and right sides of the radiating fin (3) and both side edges of the opening of the groove portion (4), It is preferable that a gap of about 1 to 5 mm exists.
放熱フィン(3)の重ね合わせ部(7)を放熱ベース(2)の溝部(4)に嵌め入れると、図３に示した鎖線のように、折り返し部(6)の先端が、放熱ベース(2)の溝部(4)からわずかに突出する。折り返し部(6)の放熱ベース(2)の溝部(4)から突出する高さは、０．５ｍｍ以下とされている。折り返し部(6)の放熱ベース(2)の溝部(4)から突出する高さが高すぎると、折り返し部(6)の先端を溝部(4)の底方向へ押圧した際、折り返し部(6)の先端のみが右側へ曲がってしまい、折り返し部(6)が塑性変形せず折り返し部(6)の先端が放熱ベース(2)の溝部(4)内に入らない可能性がある。折り返し部(6)の放熱ベース(2)の溝部(4)から突出した高さが０．５ｍｍ以下であれば、折り返し部(6)を先端側から溝部(4)の底方向へ押圧した際、折り返し部(6)の先端のみが曲がることが防止でき、確実に折り返し部(6)を塑性変形させることができる。 When the overlapping part (7) of the heat dissipating fin (3) is inserted into the groove (4) of the heat dissipating base (2), the end of the folded part (6) is connected to the heat dissipating base (as shown by the chain line in FIG. It protrudes slightly from the groove (4) of 2). The height protruding from the groove (4) of the heat dissipating base (2) of the folded portion (6) is 0.5 mm or less. If the height of the folded portion (6) protruding from the groove (4) of the heat dissipation base (2) is too high, the folded portion (6) is pushed when the tip of the folded portion (6) is pressed toward the bottom of the groove (4). ) May be bent to the right, and the folded portion (6) may not be plastically deformed, and the distal end of the folded portion (6) may not enter the groove (4) of the heat dissipation base (2). If the height protruding from the groove (4) of the heat radiating base (2) of the folded part (6) is 0.5 mm or less, the folded part (6) is pressed from the tip side toward the bottom of the groove (4). Further, it is possible to prevent only the tip of the folded portion (6) from being bent, and the folded portion (6) can be reliably plastically deformed.
その後、折り返し部(6)を先端側から溝部(4)の底方向へ押圧すると折り返し部(6)が塑性変形し、折り返し部(6)の先端が放熱ベース(2)の溝部(4)内に入るとともに重ね合わせ部(7)が左右方向に広がって溝部(4)の左右両側面間に突っ張る。その結果、放熱フィン(3)を放熱ベース(2)に固定することができる。 After that, when the folded portion (6) is pressed from the tip side toward the bottom of the groove (4), the folded portion (6) is plastically deformed, and the tip of the folded portion (6) is in the groove (4) of the heat dissipation base (2). As it enters, the overlapping portion (7) spreads in the left-right direction and stretches between the left and right side surfaces of the groove (4). As a result, the radiating fin (3) can be fixed to the radiating base (2).
こうして、ヒートシンク(1)が製造される。 Thus, the heat sink (1) is manufactured.
折り返し部(6)に貫通孔(8)を形成すると、折り返し部(6)を押圧した時に折り返し部(6)が塑性変形して左右方向に広がり易くなり、放熱フィン(3)を放熱ベース(2)に固定することが容易となる。 When the through hole (8) is formed in the folded portion (6), when the folded portion (6) is pressed, the folded portion (6) is plastically deformed and easily spreads in the left-right direction. It becomes easy to fix to 2).
放熱ベース(2)の溝部(4)に収納された折り返し部(6)が押圧される前は、折り返し部(6)の先端が放熱ベース(2)の溝部(4)から上方へ突出した状態となり、溝部(4)に収納された折り返し部(6)が先端から溝部(4)の底方向へ押圧された後は、折り返し部(6)の先端が放熱ベース(2)の溝部(4)内に入った状態となる。 Before the folded part (6) stored in the groove (4) of the heat dissipation base (2) is pressed, the tip of the folded part (6) protrudes upward from the groove (4) of the heat dissipation base (2). After the folded portion (6) stored in the groove (4) is pressed from the tip toward the bottom of the groove (4), the tip of the folded portion (6) is the groove (4) of the heat dissipation base (2). It will be in the state.
すなわち、折り返し部(6)の先端が放熱ベース(2)の溝部(4)から上方へ突出していれば、折り返し部(6)は押圧されていないため、放熱フィン(3)の重ね合わせ部(7)が放熱ベース(2)の溝部(4)の左右両側面間に突っ張っておらず、放熱フィン(3)は放熱ベース(2)に固定されていない。一方、折り返し部(6)の先端が放熱ベース(2)の溝部(4)内に入っていれば、折り返し部(6)が押圧されているため、放熱フィン(3)の重ね合わせ部(7)が放熱ベース(2)の溝部(4)の左右両側面間に突っ張っており、放熱フィン(3)は放熱ベース(2)に固定されている。 That is, if the tip of the folded portion (6) protrudes upward from the groove (4) of the heat radiating base (2), the folded portion (6) is not pressed, so the overlapping portion of the radiating fin (3) ( 7) does not stretch between the left and right side surfaces of the groove (4) of the heat dissipation base (2), and the heat dissipation fin (3) is not fixed to the heat dissipation base (2). On the other hand, if the tip of the folded portion (6) is in the groove (4) of the heat dissipation base (2), the folded portion (6) is pressed, so the overlapping portion (7 ) Stretches between the left and right side surfaces of the groove (4) of the heat dissipation base (2), and the heat dissipation fin (3) is fixed to the heat dissipation base (2).
したがって、外観視で折り返し部(6)の先端が放熱ベース(2)の溝部(4)から上方へ突出しているか否かによって、放熱フィン(3)が放熱ベース(2)に固定されているか否かを容易に判別することができる。 Therefore, whether or not the heat-radiating fin (3) is fixed to the heat-dissipating base (2) depends on whether or not the tip of the folded portion (6) protrudes upward from the groove (4) of the heat-dissipating base (2) in appearance. Can be easily determined.
この発明によるヒートシンクは、自動車用電子制御機器および産業用電子制御機器における発熱体などの冷却装置や半導体用冷却器に好適に使用される。 The heat sink according to the present invention is suitably used for a cooling device such as a heating element and a semiconductor cooler in automotive electronic control equipment and industrial electronic control equipment.
（１）：ヒートシンク
（２）：放熱ベース
（３）：放熱フィン
（４）：溝部
（５）：フィン本体
（６）：折り返し部
（７）：放熱フィンの重ね合わせ部
(1): Heat sink (2): Radiation base (3): Radiation fin (4): Groove (5): Fin body (6): Folded portion (7): Overlay portion of the radiation fin
Claims (3)
放熱フィンは、フィン本体と、フィン本体の一端部がＵターン状に折り曲げられることにより形成された折り返し部とからなり、折り返し部の高さ方向の中間位置に貫通孔が空けられており、フィン本体と折り返し部との重ね合わせにより形成された重ね合わせ部が放熱ベースの溝部に収容され、折り返し部の先端が放熱ベースの溝部内に入っているとともに放熱フィンの重ね合わせ部が放熱ベースの溝部の左右両側面間に突っ張り放熱フィンが放熱ベースに固定されているヒートシンク。 A heat spreader made of a metal wrought material having a plurality of grooves provided in parallel, and a heat spreader fin made of a metal wrench with one end fitted into the groove of the heat dissipation base and provided upright with respect to the heat dissipation base A heat sink comprising:
The radiating fin is composed of a fin body and a folded portion formed by bending one end of the fin body into a U-turn shape, and a through hole is formed at an intermediate position in the height direction of the folded portion. The overlapping part formed by overlapping the main body and the folded part is accommodated in the groove part of the heat dissipation base, the tip of the folded part is in the groove part of the heat dissipation base, and the overlapping part of the radiation fin is the groove part of the heat dissipation base A heat sink in which the heat dissipating fins are fixed to the heat dissipating base.
放熱フィン用板材の一端部をＵターン状に折り曲げることにより、フィン本体と、フィン本体の一端部に連なりかつ放熱ベースの溝部から突出する高さを有する折り返し部とからなる放熱フィンを形成し、放熱フィン用板材の一端部を折り曲げる前に折り返し部となる部分の高さ方向の中間位置に貫通孔を空けておき、フィン本体と折り返し部とを重ね合わせて形成した重ね合わせ部を溝部に収容し、折り返し部を先端側から溝部の底方向へ押圧して塑性変形させ、折り返し部の先端を溝部内に入れるとともに重ね合わせ部を溝部の左右両側面間に突っ張らせ放熱フィンを放熱ベースに固定するヒートシンクの製造方法。By folding one end portion of the heat radiating fin plate material into a U-turn shape, a heat radiating fin comprising a fin main body and a folded portion having a height that is continuous with the one end portion of the fin main body and protrudes from the groove portion of the heat radiating base is formed. Before folding one end of the radiating fin plate, a through hole is made in the intermediate position in the height direction of the part that becomes the folded part, and the overlapping part formed by overlapping the fin body and the folded part is accommodated in the groove part Then, the folded part is pressed from the tip side toward the bottom of the groove part to be plastically deformed, the tip of the folded part is inserted into the groove part, and the overlapping part is stretched between the left and right side surfaces of the groove part to fix the radiation fin to the radiation base. A method of manufacturing a heat sink.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015162641A JP6564274B2 (en) | 2015-08-20 | 2015-08-20 | heatsink |
| CN201620896225.4U CN205993055U (en) | 2015-08-20 | 2016-08-17 | Radiator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015162641A JP6564274B2 (en) | 2015-08-20 | 2015-08-20 | heatsink |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2017041544A JP2017041544A (en) | 2017-02-23 |
| JP6564274B2 true JP6564274B2 (en) | 2019-08-21 |
Family
ID=58107058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2015162641A Active JP6564274B2 (en) | 2015-08-20 | 2015-08-20 | heatsink |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6564274B2 (en) |
| CN (1) | CN205993055U (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109341401B (en) * | 2018-12-07 | 2023-11-17 | 常州恒创热管理有限公司 | Radiating fin and cascade caulking groove radiator |
| CN110149786A (en) * | 2019-06-17 | 2019-08-20 | 鑫佰图科技(惠州)有限公司 | A kind of assemble method of the radiating fin of radiator |
| CN111589917B (en) * | 2020-05-25 | 2021-03-26 | 深圳市维鼎精密五金有限公司 | Fin structure and stamping processing equipment thereof |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3503023B2 (en) * | 2000-07-07 | 2004-03-02 | 誠志 蟹江 | Bonding method of copper fin and copper base in heat sink |
| JP3990140B2 (en) * | 2001-11-08 | 2007-10-10 | 株式会社フジクラ | heatsink |
| JP2004022830A (en) * | 2002-06-17 | 2004-01-22 | Fujikura Ltd | Heat sink |
| JP2004158682A (en) * | 2002-11-07 | 2004-06-03 | Niwano:Kk | Heat sink |
| CN202306426U (en) * | 2011-09-15 | 2012-07-04 | 杨煌龙 | Radiator fin and substrate stamping combination structure |
| CN102538558B (en) * | 2012-02-10 | 2013-07-24 | 东莞汉旭五金塑胶科技有限公司 | Radiator of punch combined radiating fins |
| CN102748734B (en) * | 2012-06-13 | 2014-08-13 | 东莞汉旭五金塑胶科技有限公司 | Radiating fin and radiating base combination of LED (light-emitting diode) bulb |
-
2015
- 2015-08-20 JP JP2015162641A patent/JP6564274B2/en active Active
-
2016
- 2016-08-17 CN CN201620896225.4U patent/CN205993055U/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN205993055U (en) | 2017-03-01 |
| JP2017041544A (en) | 2017-02-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7911798B2 (en) | Memory heat sink device provided with a larger heat dissipating area | |
| JP3140755U (en) | Corrugated fin type radiator | |
| KR200448519Y1 (en) | Heat sink for protrusion type ic package | |
| JP6564274B2 (en) | heatsink | |
| US20160088770A1 (en) | Heatsink equipped with plural fins whose connection methods are different | |
| US20180077817A1 (en) | Heat sink for head up display | |
| US20110290449A1 (en) | Cooler device | |
| JP2005033157A (en) | Radiator and its manufacturing method | |
| KR101002989B1 (en) | heat sink for electric and electronic products with propagation heat | |
| JP5368973B2 (en) | Semiconductor device radiator and method of manufacturing the same | |
| US20090279256A1 (en) | Heat-dissipating structure | |
| US20130105132A1 (en) | Heat sink fin and heat sink device | |
| JP3149894U (en) | Radiator | |
| JP2011040558A (en) | Heat sink | |
| JP2016034008A (en) | Mounting device of heating component | |
| TWI589829B (en) | Heat sink and method for manufacturing the same | |
| JP7172065B2 (en) | semiconductor equipment | |
| US9476655B2 (en) | Thermal module | |
| JP2002093961A (en) | Heat sink and semiconductor device | |
| JP2014192401A (en) | Heat sink | |
| KR100616310B1 (en) | Manufaturing method of a heatsink for electronic equipment | |
| JP2003234443A (en) | Heat sink with fin | |
| JP2010040996A (en) | Heat sink | |
| JP6606650B2 (en) | Manufacturing method of heat sink integrated with plate fin | |
| JP2015207569A (en) | heat dissipation structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A821 Effective date: 20170912 |
|
| RD02 | Notification of acceptance of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7422 Effective date: 20170912 |
|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20180508 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20190212 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20190226 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20190422 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20190702 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20190726 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 6564274 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| RD02 | Notification of acceptance of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: R3D02 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313111 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |