JP4708895B2 - Brazing member and manufacturing method thereof - Google Patents

Brazing member and manufacturing method thereof Download PDF

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JP4708895B2
JP4708895B2 JP2005209405A JP2005209405A JP4708895B2 JP 4708895 B2 JP4708895 B2 JP 4708895B2 JP 2005209405 A JP2005209405 A JP 2005209405A JP 2005209405 A JP2005209405 A JP 2005209405A JP 4708895 B2 JP4708895 B2 JP 4708895B2
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brazing
housing
stacking direction
core
outer peripheral
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JP2007021555A5 (en
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俊三 宮内
勇司 大山
洋行 駒井
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株式会社マーレ フィルターシステムズ
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Description

この発明は、例えば内燃機関のオイルクーラ等の熱交換器に代表されるロウ付け部材に関する。なお、本明細書では明瞭化のために、ろう付け等の「ろう」を「ロウ」と記載している。   The present invention relates to a brazing member typified by a heat exchanger such as an oil cooler of an internal combustion engine. In the present specification, for clarity, “wax” such as brazing is described as “low”.

特許文献1にも開示されているように、内燃機関用のオイルクーラ等には、表面にロウ材層を有する複数の金属プレートがロウ付けにより接合されたロウ付け部材が好適に用いられる。ロウ付けの際には、ロウ付け状態を安定させるために、ロウ付け部材を構成する各部品を仮組みした仮組立体とともに炉内に入れられるロウ付け治具が用いられる。ロウ付け治具は、仮組立体を積層方向に挟持する一対のロアベース及びアッパベースと、ロウ材の溶融により発生する金属プレートの隙間を調整するように、つまり各部の密接状態を保つように、これらロアベースとアッパベースとを互いに近接する方向に所定圧力で加圧するスプリングや錘等の加圧治具と、を備えている。
実開平5−88770号公報
As disclosed in Patent Document 1, a brazing member in which a plurality of metal plates having brazing material layers on the surface are joined by brazing is suitably used for an oil cooler for an internal combustion engine or the like. In brazing, in order to stabilize the brazing state, a brazing jig that is put into a furnace together with a temporary assembly in which parts constituting the brazing member are temporarily assembled is used. The brazing jig adjusts the gap between the pair of lower base and upper base that sandwich the temporary assembly in the stacking direction and the metal plate generated by melting of the brazing material, that is, keeps the close state of each part. A pressure jig such as a spring or a weight that pressurizes the lower base and the upper base in a direction close to each other with a predetermined pressure is provided.
Japanese Utility Model Publication No. 5-88770

しかしながら、ロウ付け部材の各部品とともに炉内に入れられるロウ付け治具を使用する構成では、ロウ付け治具が繰り返し高温下に曝されるため、ロウ付け治具の熱変形により寸法精度の低下を招くおそれがある。また、ロウ付け治具が製品であるロウ付け部材とロウ付けされてしまうおそれがある。更に、ロウ付け治具も炉内で不可避的に加熱されるため、その加熱分のエネルギーが無駄となってしまう。   However, in a configuration using a brazing jig that is placed in the furnace together with each part of the brazing member, the brazing jig is repeatedly exposed to high temperatures, so the dimensional accuracy decreases due to thermal deformation of the brazing jig. May be incurred. In addition, the brazing jig may be brazed with a brazing member that is a product. Furthermore, since the brazing jig is inevitably heated in the furnace, energy for the heating is wasted.

本発明は、このような課題に鑑みてなされたものであり、ロウ付け治具を敢えて必要としない新規なロウ付け部材及びその製造方法を提供することを主たる目的としている。   The present invention has been made in view of such problems, and a main object of the present invention is to provide a new brazing member that does not require a brazing jig and a manufacturing method thereof.

表面にロウ材層を備えた複数のプレートが積層され、ロウ付け時に加熱によりロウ材層が溶融することによって、コア部の積層方向寸法の縮小を伴いつつ、積層方向で隣り合うプレートが互いにロウ付けされるコア部と、
このコア部を積層方向に挟む上記プレートよりも大きい金属製の第1ハウジング及び第2ハウジングと、
ロウ付け前に、上記コア部を挟んで第1,第2ハウジングを積層方向に加圧して、上記コア部が存在する径方向中央側で凸に膨らむように弾性変形させることにより、上記コア部よりも径方向外方へ張り出した上記第1,第2ハウジングの外周部を、上記積層方向に関してロウ付け後の正規寸法状態まで弾性変形させた状態で、これら第1,第2ハウジングの外周部同士を固定して、積層方向での相対位置を拘束させる仮止め部と、
を有している。
A plurality of plates having a brazing material layer on the surface are laminated, and the brazing material layer is melted by heating at the time of brazing, so that adjacent plates in the laminating direction are brazed together with a reduction in the dimension of the core in the laminating direction. A core part attached,
A metal first housing and a second housing larger than the plate sandwiching the core portion in the stacking direction;
Before brazing, the first and second housings are pressed in the laminating direction across the core part, and elastically deformed so as to bulge out convexly on the radial center side where the core part exists. the first projecting radially outward than the outer peripheral portion of the second housing, in a state of being elastically deformed to a proper size state after brazing respect the stacking direction, these first, outer peripheral portion of the second housing A temporary fixing part that fixes the other and restrains the relative position in the stacking direction ;
have.

本発明によれば、ロウ付け前に第1ハウジングと第2ハウジングとを仮止め部で仮止めしておくことにより、ロウ付け治具を用いることなく、第1,第2ハウジングからコア部に対して積層方向に沿う所定の圧縮圧力を作用させることができる。従って、ロウ付け治具を省略することが可能となり、ロウ付け治具の維持や交換が不要となるとともに、ロウ付け治具の組付・分解等の作業が不要となり、かつ、ロウ付け治具の削減分、炉内の消費熱量が低減し、ロウ付け部材の入炉数を増やすことができる等、実用上多大な効果を得ることができる。   According to the present invention, the first housing and the second housing are temporarily fixed by the temporary fixing portion before brazing, so that the first and second housings can be connected to the core portion without using a brazing jig. On the other hand, a predetermined compression pressure along the stacking direction can be applied. Accordingly, it is possible to omit the brazing jig, and it is not necessary to maintain or replace the brazing jig, and it is not necessary to assemble / disassemble the brazing jig. As a result of this reduction, the amount of heat consumed in the furnace is reduced, and the number of brazing members to be entered can be increased.

以下、本発明の好ましい実施の形態を図面を参照して詳細に説明する。なお、理解を容易にするために、以下の説明では、便宜上、「上」「下」の方向を図1〜図3の姿勢を基準として用いることとする。   Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In order to facilitate understanding, in the following description, for the sake of convenience, the directions of “up” and “down” are used with reference to the postures of FIGS.

図1〜図4は、本発明を内燃機関のシリンダブロックに取り付けられるロウ付け部材としてのオイルクーラ10に適用した第1実施例を示している。このオイルクーラ10自体は本出願人による特開平10−196367号公報や特開平7−269321号公報等に記載されており、ここでは簡単な説明に留める。   1 to 4 show a first embodiment in which the present invention is applied to an oil cooler 10 as a brazing member attached to a cylinder block of an internal combustion engine. This oil cooler 10 itself is described in Japanese Patent Application Laid-Open No. 10-196367 and Japanese Patent Application Laid-Open No. 7-269321 by the applicant of the present application, and only a brief description will be given here.

図3及び図4を参照して、オイルクーラ10は、ステンレス等の金属プレート12を複数積層して、これら金属プレート12間にオイル室と冷却水室とを交互に形成したコア部14と、金属プレート12の積層方向P(図3の上下方向)でコア部14を挟み込むように、このコア部14を収容するステンレス等の金属製の第1ハウジング16及び第2ハウジング17と、を備えている。コア部14には、積層方向Pに貫通して各オイル室へ連通する第1,第2オイル通路18,19と、同じく金属プレート12の積層方向Pに貫通して各冷却水室へ連通する一対の冷却水通路(図示省略)とが形成されている。   3 and 4, the oil cooler 10 includes a core portion 14 in which a plurality of metal plates 12 such as stainless steel are stacked, and oil chambers and cooling water chambers are alternately formed between the metal plates 12. There are provided a first housing 16 and a second housing 17 made of metal such as stainless steel for housing the core portion 14 so as to sandwich the core portion 14 in the stacking direction P of the metal plate 12 (vertical direction in FIG. 3). Yes. The core portion 14 penetrates in the stacking direction P and communicates with the oil chambers, and also communicates with the cooling water chambers through the metal plate 12 in the stacking direction P. A pair of cooling water passages (not shown) is formed.

第1ハウジング16は、一端が開口する略有底筒状に形成され、その筒部16Aに第1,第2冷却水管22,23が取り付けられるとともに、円盤状をなす底部16Bの外面に、図外のオイルフィルタへの取付座面24Aを有するステンレス製の取付シート24が取り付けられている。第2ハウジング17は、略円盤状をなし、第1ハウジング16の開口部を閉塞するように、その外周縁部17Aが第1ハウジング16の筒部16Aの開口周縁部16Cに接合される。第2ハウジング17の外周縁部17Aは、第1ハウジング16の開口周縁部16Cの内周面に良好に追従・密接するように、下方へ向けて断面略チャンネル状に張り出した形状に折曲成形されている。また、この第2ハウジング17には、Oリング28を保持するパッキンガイド30が固定されている。   The first housing 16 is formed in a substantially bottomed cylindrical shape having one end opened, and the first and second cooling water pipes 22 and 23 are attached to the cylindrical portion 16A, and the outer surface of the bottom portion 16B having a disk shape is illustrated on the outer surface. A stainless steel mounting sheet 24 having a mounting seating surface 24A for the outer oil filter is mounted. The second housing 17 has a substantially disk shape, and its outer peripheral edge portion 17A is joined to the opening peripheral edge portion 16C of the cylindrical portion 16A of the first housing 16 so as to close the opening portion of the first housing 16. The outer peripheral edge portion 17A of the second housing 17 is bent into a shape projecting downward in a substantially channel shape so as to follow and closely contact the inner peripheral surface of the opening peripheral edge portion 16C of the first housing 16 Has been. A packing guide 30 that holds the O-ring 28 is fixed to the second housing 17.

コア部14とハウジング16との間には、冷却水が通流するための第1間隙D1及び第2間隙D2を区画形成するように、ディスタンスピース32とウォータガイド34とが配設されている。ウォータガイド34は、略有底筒状をなし、上側の底部34Aがコア部14の最上面にロウ付けにより接合されるとともに、下側の開口端部に径方向外方へ張り出したフランジ部34Bが形成され、このフランジ部34Bがハウジング16内周面にロウ付けにより接合されている。ディスタンスピース32は、第1ハウジング16の底部16Bとウォータガイド34の底部34Aとの間に間隙を確保するように、両者16B,34A間に介装されている。   A distance piece 32 and a water guide 34 are disposed between the core portion 14 and the housing 16 so as to define a first gap D1 and a second gap D2 through which cooling water flows. . The water guide 34 has a substantially bottomed cylindrical shape, and an upper bottom portion 34A is joined to the uppermost surface of the core portion 14 by brazing, and a flange portion 34B projecting radially outward from a lower opening end portion. The flange portion 34B is joined to the inner peripheral surface of the housing 16 by brazing. The distance piece 32 is interposed between the bottom portions 16B and 34A so as to secure a gap between the bottom portion 16B of the first housing 16 and the bottom portion 34A of the water guide 34.

このようなオイルクーラ10は、取付シート24の座面24Aにオイルフィルタを取り付けた状態で、オイルフィルタおよびオイルクーラ10の貫通孔36を貫通する図外の中空ボルトによって、上記Oリング28を介して第2ハウジング17側よりシリンダブロックへ液密に締結,固定される。   Such an oil cooler 10 has an oil filter attached to the seating surface 24A of the mounting seat 24, and the oil filter and a hollow bolt (not shown) penetrating the through hole 36 of the oil cooler 10 through the O-ring 28. Then, the second housing 17 is fastened and fixed to the cylinder block in a liquid-tight manner.

エンジン側から送り込まれるエンジン潤滑用のオイルは、一方の第1オイル通路18から金属プレート12間に画成される各オイル室内に入り、各オイル室内を周方向に沿って流れた後、他方の第2オイル通路19へ送り出され、ディスタンスピース32やハウジング底部16Bに形成された穴(図示省略)及び取付シート24に形成された複数の穴24Bを通してオイルフィルタへ送り出される。オイルフィルタで濾過されたオイルは、上記中空ボルトの内部を通ってエンジン側へと戻される。また、一方の第1冷却水管22より流入される冷却水は、第1間隙D1から一方の冷却水通路を経て各冷却水室へ入り、各冷却水室を周方向に流れた後、他方の冷却水通路および第2間隙D2を経て第2冷却水管23へと送り出される。そして、各冷却水室内を流れる冷却水によって、オイル室内を流れるオイルが適温化される。   The engine lubricating oil fed from the engine side enters each oil chamber defined between the metal plates 12 from one first oil passage 18 and flows along the circumferential direction in each oil chamber. The oil is sent to the second oil passage 19 and sent to the oil filter through holes (not shown) formed in the distance piece 32 and the housing bottom 16B and a plurality of holes 24B formed in the mounting sheet 24. The oil filtered by the oil filter is returned to the engine side through the inside of the hollow bolt. In addition, the cooling water flowing in from the first cooling water pipe 22 enters the cooling water chambers through the first gap D1 through the one cooling water passage and flows in the circumferential direction through the cooling water chambers. It is sent out to the second cooling water pipe 23 through the cooling water passage and the second gap D2. And the oil which flows through an oil chamber is made suitable temperature with the cooling water which flows through each cooling water chamber.

上記の金属プレート12やディスタンスピース32等のオイルクーラ10を構成する多くの部品は、基材の両面にロウ材層を備えたクラッド材からなり、炉内で加熱することにより、各部のロウ付け接合が行われる。   Many parts constituting the oil cooler 10 such as the metal plate 12 and the distance piece 32 described above are made of a clad material provided with a brazing material layer on both surfaces of a base material, and are brazed to each part by heating in a furnace. Joining is performed.

図9を参照して、ロウ付け治具2を用いた比較例に係るロウ付け手順について説明する。一般的にはこの比較例のように、ロウ付け前の各部品を組み立てた仮組立体1Aにロウ付け治具2を組み付けて炉内に入れ、炉内で加熱することにより各部のロウ付けが行われる。上記のロウ付け治具2は、仮組立体1Aを積層方向Pに挟持する一対のロアベース3及びアッパベース4と、ロウ材の溶融により発生する隙間を調整するように、つまり各部の密接状態を保つように、これらロアベース3とアッパベース4とを互いに近接する圧縮方向に所定圧力で加圧する加圧治具と、を備えている。この加圧治具は、仮組立体1A,ロアベース3及びアッパベース4を貫通するセンターシャフト5と、センターシャフト5の一端に取り付けられてアッパベース4に当接するストッパピン6と、センターシャフト5の他端に設けられ、ロアベース3をアッパベース4側へ例えば初期荷重800kg程度の所定圧力で加圧するスプリング7と、を有している。ロウ付け後のオイルクーラ1は、ロウ付け前の仮組立体1Aに比して、ロウ材の溶融により積層方向Pの寸法が所定量αだけ低減することとなる。   A brazing procedure according to a comparative example using the brazing jig 2 will be described with reference to FIG. In general, as in this comparative example, the brazing jig 2 is assembled into the temporary assembly 1A in which the parts before brazing are assembled, placed in a furnace, and heated in the furnace to braze each part. Done. The brazing jig 2 adjusts the gap generated by the melting of the brazing material with the pair of lower base 3 and upper base 4 that sandwich the temporary assembly 1A in the stacking direction P, that is, the intimate state of each part. A pressurizing jig that pressurizes the lower base 3 and the upper base 4 with a predetermined pressure in the compression direction close to each other is provided. The pressurizing jig includes a center shaft 5 that passes through the temporary assembly 1A, the lower base 3, and the upper base 4, a stopper pin 6 that is attached to one end of the center shaft 5 and contacts the upper base 4, and a center shaft 5 A spring 7 is provided at the other end and pressurizes the lower base 3 toward the upper base 4 with a predetermined pressure of, for example, an initial load of about 800 kg. In the oil cooler 1 after brazing, the dimension in the stacking direction P is reduced by a predetermined amount α due to melting of the brazing material, as compared with the temporary assembly 1A before brazing.

これに対して本実施例では、図1及び図2に示すように、ロウ付け前の各部品を組み立てた仮組立体に対し、その積層方向Pの寸法がロウ付け後の正規の寸法となるように、スプリングや錘等の適宜な治具を用いて、上記比較例での初期荷重(ロウ付け安定性を得るために必要な荷重)と同等またはそれ以上の荷重・圧力で積層方向Pに加圧し、この加圧を保持した状態、つまりロウ付け後の正規寸法状態まで弾性変形した状態で、第1,第2ハウジング16,17を、仮止め部40において溶接等により固定し、両者16,17を積層方向Pで仮止めする。つまり両者16,17の積層方向Pでの相対位置を拘束させる。仮止め部40は、図2に示すように、第1ハウジング16の開口周縁部16Cに沿って、周方向で適宜間隔毎に複数箇所に設けられている。この第1実施例では、仮止め部40において、スポット溶接やYAGレーザ溶接などの溶接により両者16,17が固定されている。   On the other hand, in the present embodiment, as shown in FIGS. 1 and 2, the dimension in the stacking direction P is a normal dimension after brazing for the temporary assembly in which the parts before brazing are assembled. Thus, using an appropriate jig such as a spring or a weight, in the stacking direction P at a load / pressure equal to or higher than the initial load (load necessary for obtaining brazing stability) in the comparative example. The first and second housings 16 and 17 are fixed by welding or the like at the temporary fixing portion 40 in a state in which the pressure is applied and the pressure is maintained, that is, in a state of being elastically deformed to the normal dimension state after brazing. , 17 are temporarily fixed in the stacking direction P. That is, the relative position in the stacking direction P of both 16 and 17 is constrained. As shown in FIG. 2, the temporary fixing portions 40 are provided at a plurality of locations at appropriate intervals in the circumferential direction along the opening peripheral edge portion 16 </ b> C of the first housing 16. In the first embodiment, the temporary fixing portion 40 is fixed to both 16 and 17 by welding such as spot welding or YAG laser welding.

この仮止め後に加圧を開放すると、図1及び図2に示すような中間成形体11が得られる。この中間成形体11では、特に積層方向Pに関しては各部品のロウ材層の厚みを合わせた分、第1,第2ハウジング16,17が径方向中央側で凸に膨らむように弾性変形し、これら第1,第2ハウジング16,17が元の形状に戻ろうとする反発応力・復元力により、積層方向Pに挟み込まれるコア部14,ディスタンスピース32及びウォータガイド34に対し、積層方向Pに沿う所定の圧縮圧力、つまり上記の初期荷重と同程度の荷重・圧力が作用する。従って、上記比較例のようなロウ付け治具2を用いることなく、第1,第2ハウジング16,17により積層方向Pに挟持されるコア部14,ディスタンスピース32及びウォータガイド34等に対し、ロウ付け治具2を用いた場合と同じ様に所定の圧縮圧力を作用させることができる。よって、この中間成形体11を単体で炉内に入れて加熱すると、炉内の温度上昇に伴って熱膨張による変形と、ロウ付け温度下におけるロウ材の溶融による隙間との釣り合いにより、上記のロウ付け治具2を用いた場合と同様に隙間修正作用が働き、ロウ付け治具2を用いた場合と同等又はそれ以上のロウ付け性を得ることが可能となる。このように、ロウ付け治具2を省略することができることから、ロウ付け治具2の維持や交換が不要となるとともに、ロウ付け治具2の組付・分解等の作業が不要となり、かつ、ロウ付け治具2の削減分、炉内の消費熱量が低減し、その入炉数を増加することができる。   When the pressure is released after the temporary fixing, an intermediate molded body 11 as shown in FIGS. 1 and 2 is obtained. In the intermediate molded body 11, particularly in the stacking direction P, the first and second housings 16 and 17 are elastically deformed so as to bulge convexly on the radial center side, corresponding to the thickness of the brazing material layer of each component. Due to the repulsive stress / restoring force that the first and second housings 16, 17 return to their original shapes, the core part 14, the distance piece 32, and the water guide 34 sandwiched in the stacking direction P are along the stacking direction P. A predetermined compression pressure, that is, a load / pressure equivalent to the initial load acts. Therefore, without using the brazing jig 2 as in the above comparative example, the core portion 14, the distance piece 32, the water guide 34, etc. sandwiched in the stacking direction P by the first and second housings 16 and 17, A predetermined compression pressure can be applied in the same manner as when the brazing jig 2 is used. Therefore, when this intermediate molded body 11 is put in the furnace alone and heated, the above-described balance between the deformation due to thermal expansion and the gap due to the melting of the brazing material at the brazing temperature due to the temperature rise in the furnace, The gap correcting action works in the same way as when the brazing jig 2 is used, and brazing performance equal to or higher than that when the brazing jig 2 is used can be obtained. Thus, since the brazing jig 2 can be omitted, maintenance and replacement of the brazing jig 2 are not necessary, and work such as assembly / disassembly of the brazing jig 2 is not necessary, and The amount of heat consumed in the furnace is reduced by the reduction of the brazing jig 2 and the number of furnaces can be increased.

特に、この第1実施例にあっては、ディスタンスピース32やウォータガイド34によって第1ハウジング16とコア部14との間に適宜な間隙D1,D2が確保されていることから、図1や図2に模式的に示すように第1ハウジング16が比較的容易に弾性変形することができる。   In particular, in the first embodiment, appropriate distances D1 and D2 are secured between the first housing 16 and the core portion 14 by the distance piece 32 and the water guide 34, so that FIG. As schematically shown in FIG. 2, the first housing 16 can be elastically deformed relatively easily.

また、この第1実施例のように溶接により仮止めを行う構成では、圧入作業性を損ねることなく溶接可能な積層方向P寸法を十分に確保するように、第1ハウジング16の開口周縁部16Cの内面に対向し、安定的にスライドして摺動面(摺動部)となる第2ハウジング17の外周縁部17Aの最外壁面17Bの寸法が設定されている。   Further, in the configuration in which the temporary fixing is performed by welding as in the first embodiment, the peripheral edge portion 16C of the opening of the first housing 16 is sufficiently secured so as to sufficiently secure the stacking direction P dimension that can be welded without impairing the press-fitting workability. The dimension of the outermost wall surface 17B of the outer peripheral edge portion 17A of the second housing 17 which is opposed to the inner surface of the second housing 17 and stably slides to become a sliding surface (sliding portion) is set.

図5及び図6は、本発明の第2実施例に係るオイルクーラ10Aを示している。なお、後述する実施例では、既述した第1実施例と同じ構成要素には同一参照符号を付し、重複する説明を適宜省略する。この第2実施例では、周方向に沿って適宜間隔毎に複数設けられた仮止め部40Aにおいて、第1ハウジング16の開口周縁部16Cを第2ハウジング17の外周縁部17Aに加締めることにより両者が結合され、積層方向Pに仮止めされている点で、上記第1実施例と異なっている。より具体的には、上記第1実施例と同様、ロウ付け前の各部品を組み立てた状態で、第1ハウジング16と第2ハウジング17とを所定圧力で積層方向Pに加圧し、この加圧状態で、各仮止め部40Aにおいて、第1ハウジング16の開口周縁部16Cに形成された折曲片部41を径方向内方へ折り曲げて、第2ハウジング17の外周縁部17Aに巻き付くように接合させる。このような第2実施例においても、第1ハウジング16と第2ハウジング17との間に挟まれるコア部14等に所定圧力を付与することができるので、ロウ付け治具2を用いることなくロウ付け処理を行うことができる。   5 and 6 show an oil cooler 10A according to a second embodiment of the present invention. In the embodiments described later, the same components as those in the first embodiment described above are denoted by the same reference numerals, and redundant descriptions are omitted as appropriate. In the second embodiment, a plurality of temporary fixing portions 40A provided at appropriate intervals along the circumferential direction are used to crimp the opening peripheral edge portion 16C of the first housing 16 to the outer peripheral edge portion 17A of the second housing 17. They differ from the first embodiment in that both are combined and temporarily fixed in the stacking direction P. More specifically, as in the first embodiment, the first housing 16 and the second housing 17 are pressed in the stacking direction P with a predetermined pressure in a state where the parts before brazing are assembled. In the state, the bent piece portion 41 formed on the opening peripheral edge portion 16C of the first housing 16 is bent radially inward in each temporary fixing portion 40A so as to be wound around the outer peripheral edge portion 17A of the second housing 17. To be joined. Also in the second embodiment, a predetermined pressure can be applied to the core portion 14 and the like sandwiched between the first housing 16 and the second housing 17, so that the brazing jig 2 is not used. The attachment process can be performed.

図7及び図8は、本発明の第3実施例に係る、いわゆるハウジングレス式オイルクーラ10Bを示している。このようなハウジングレス式オイルクーラ自体は特開平10−185462号公報等に記載されているように公知であり、ここでは詳細な説明を省略する。このハウジングレス式オイルクーラ10Bは、複数の金属プレート12が積層され、隣り合う金属プレート12がロウ付けされてなるコア部14と、このコア部14を積層方向Pで挟み込む第1ハウジング46及び第2ハウジング47とを有している。但し、この第3実施例では、第1,第2ハウジング46,47がともに金属プレート12とほぼ同様の円盤状をなしており、コア部14の外周はハウジングに覆われることなく外部に露出している。つまり、第1,第2ハウジング46,47は、コア部14の最外層のプレートと換言することもできる。   7 and 8 show a so-called housingless oil cooler 10B according to a third embodiment of the present invention. Such a housingless type oil cooler itself is known as described in Japanese Patent Laid-Open No. 10-185462, and detailed description thereof is omitted here. The housingless oil cooler 10B includes a core portion 14 in which a plurality of metal plates 12 are stacked and adjacent metal plates 12 are brazed, and a first housing 46 and a first housing 46 sandwiching the core portion 14 in the stacking direction P. 2 housing 47. However, in the third embodiment, both the first and second housings 46 and 47 have substantially the same disk shape as the metal plate 12, and the outer periphery of the core portion 14 is exposed outside without being covered by the housing. ing. That is, the first and second housings 46 and 47 can also be referred to as the outermost layer plate of the core portion 14.

そして、この第3実施例では、第1,第2ハウジング46,47の外周部とコア部14の外周部とにわたって、これらの部材を積層方向Pに仮止めする仮止め部40Bが設けられている。仮止め部40Bは周方向に適宜間隔を置いて複数箇所に設定されている。詳しくは、ロウ付け前に各部品を仮組みした仮組立体に対し、積層方向Pの寸法がロウ付け後の正規の寸法となるように、スプリングや錘等の適宜な治具を用いて、積層方向Pに所定圧力(上記の初期荷重(800kg程度)に相当する圧力)で加圧し、この加圧を保持した状態、つまりロウ付け後の正規寸法まで弾性変形させた状態で、上記の仮止め部40Bにおいて、第1,第2ハウジング46,47及びコア部14の外周部を積層方向Pに沿ってYAG溶接等により固定する。   And in this 3rd Example, the temporary fix part 40B which temporarily fixes these members to the lamination direction P is provided over the outer peripheral part of the 1st, 2nd housings 46 and 47, and the outer peripheral part of the core part 14. Yes. The temporary fixing portions 40B are set at a plurality of locations at appropriate intervals in the circumferential direction. Specifically, for a temporary assembly in which each part is temporarily assembled before brazing, using an appropriate jig such as a spring or a weight so that the dimension in the stacking direction P becomes a regular dimension after brazing, In the stacking direction P with a predetermined pressure (a pressure corresponding to the above initial load (about 800 kg)) and in the state where this pressurization is maintained, that is, in the state of being elastically deformed to the normal dimension after brazing, In the stop portion 40B, the outer peripheral portions of the first and second housings 46 and 47 and the core portion 14 are fixed along the stacking direction P by YAG welding or the like.

このような第3実施例においても、上記の第1,第2実施例と同様、第1,第2ハウジング46,47により狭持されるコア部14に対して積層方向Pに沿う所定の圧縮圧力が作用するので、ロウ付け治具2を用いることなくロウ付け処理を良好に行うことができる。   Also in the third embodiment, a predetermined compression along the stacking direction P is applied to the core portion 14 held by the first and second housings 46 and 47 as in the first and second embodiments. Since the pressure acts, the brazing process can be favorably performed without using the brazing jig 2.

以上の説明より把握し得る本発明の特徴的な技術思想について、上記実施例を参照しつつ列記する。但し、本発明は上記実施例に限定されるものではない。例えば、上記実施例のような内燃機関のシリンダブロックに取り付けられるオイルクーラに限らず、自動変速機の変速機ケースに取り付けられるオイルクーラや、オイルクーラ以外の熱交換器の他、熱交換器以外の様々なロウ付け部材にも本発明を適用することができる。   The characteristic technical ideas of the present invention that can be understood from the above description will be listed with reference to the above-described embodiments. However, the present invention is not limited to the above embodiments. For example, not only the oil cooler attached to the cylinder block of the internal combustion engine as in the above embodiment, but also an oil cooler attached to a transmission case of an automatic transmission, a heat exchanger other than an oil cooler, and other than a heat exchanger The present invention can also be applied to various brazing members.

(1)複数のプレート12が積層され、積層方向Pで隣り合うプレート12が互いにロウ付けされるコア部14と、このコア部14を積層方向Pに挟む第1ハウジング16(46)及び第2ハウジング17(47)と、ロウ付け前に上記第1,第2ハウジング16,17(46,47)を積層方向Pで仮止めする仮止め部40(40A,40B)と、を有する。すなわち、第1,第2ハウジング16,17(46,47)を積層方向Pに加圧した状態で仮止めして中間成形体11を形成し、この中間成形体11を加熱することにより、ロウ付け治具2を用いることなくロウ付けを行うことができる。   (1) A core part 14 in which a plurality of plates 12 are laminated and adjacent plates 12 are brazed together in the lamination direction P, and the first housing 16 (46) and the second housing 16 sandwiching the core part 14 in the lamination direction P A housing 17 (47), and a temporary fixing portion 40 (40A, 40B) for temporarily fixing the first and second housings 16, 17 (46, 47) in the stacking direction P before brazing. That is, the intermediate molded body 11 is formed by temporarily fixing the first and second housings 16 and 17 (46, 47) in a state in which they are pressurized in the stacking direction P, and the intermediate molded body 11 is heated. Brazing can be performed without using the brazing jig 2.

(2)好ましくは上記第1,第2実施例のように、第1ハウジング16がコア部14の外周を囲繞する筒部16Aを有する略有底筒状をなし、仮止め部40(40A)が筒部16Aの開口周縁部16Cと、第2ハウジング17の外周縁部17Aと、の結合部に沿って設けられる。仮止め部40(40A)では、例えば溶接や加締め等により仮止めが行われる。   (2) Preferably, as in the first and second embodiments, the first housing 16 has a substantially bottomed cylindrical shape having a cylindrical portion 16A surrounding the outer periphery of the core portion 14, and the temporary fixing portion 40 (40A). Is provided along the connecting portion between the opening peripheral edge portion 16C of the cylindrical portion 16A and the outer peripheral edge portion 17A of the second housing 17. In the temporary fixing part 40 (40A), temporary fixing is performed by welding or caulking, for example.

(3)第3実施例のハウジングレス型オイルクーラのように、第1,第2ハウジング46,47がコア部の積層方向Pの両端に配置される略板状をなしている場合、仮止め部40Bにおいて第1,第2ハウジング46,47の外周部とコア部14の外周部とを積層方向Pに沿って仮止めすれば良い。   (3) When the first and second housings 46 and 47 are substantially plate-like shapes arranged at both ends in the stacking direction P of the core portion, as in the housingless type oil cooler of the third embodiment, What is necessary is just to temporarily fix the outer peripheral part of the 1st, 2nd housings 46 and 47 and the outer peripheral part of the core part 14 along the lamination direction P in the part 40B.

本発明の第1実施例に係るオイルクーラの中間成形体を示す断面図。Sectional drawing which shows the intermediate molded object of the oil cooler which concerns on 1st Example of this invention. 上記第1実施例の中間成形体を示す側面図。The side view which shows the intermediate molded object of the said 1st Example. 上記第1実施例のオイルクーラを示す断面図。Sectional drawing which shows the oil cooler of the said 1st Example. 上記第1実施例のオイルクーラを示す上面図。The top view which shows the oil cooler of the said 1st Example. 本発明の第2実施例に係るオイルクーラの断面図。Sectional drawing of the oil cooler which concerns on 2nd Example of this invention. 上記第2実施例のオイルクーラの下面図。The bottom view of the oil cooler of the second embodiment. 本発明の第3実施例に係るハウジングレス型オイルクーラの断面図。Sectional drawing of the housingless type oil cooler which concerns on 3rd Example of this invention. 上記第3実施例のオイルクーラの側面図。The side view of the oil cooler of the said 3rd Example. 比較例に係るオイルクーラのロウ付け手順を示す説明図。Explanatory drawing which shows the brazing procedure of the oil cooler which concerns on a comparative example.

符号の説明Explanation of symbols

10,10A,10B…オイルクーラ(ロウ付け部材)
11…中間成形体
12…金属プレート
14…コア部
16…第1ハウジング
16A…筒部
16C…開口周縁部
17…第2ハウジング
17A…外周縁部
40,40A,40B…仮止め部
46…第1ハウジング
47…第2ハウジング
10, 10A, 10B ... Oil cooler (brazing member)
DESCRIPTION OF SYMBOLS 11 ... Intermediate molded object 12 ... Metal plate 14 ... Core part 16 ... 1st housing 16A ... Cylindrical part 16C ... Opening peripheral part 17 ... 2nd housing 17A ... Outer peripheral part 40, 40A, 40B ... Temporary fixing part 46 ... 1st Housing 47 ... second housing

Claims (4)

表面にロウ材層を備えた複数のプレートが積層され、ロウ付け時に加熱によりロウ材層が溶融することによって、コア部の積層方向寸法の縮小を伴いつつ、積層方向で隣り合うプレートが互いにロウ付けされるコア部と、
このコア部を積層方向に挟む上記プレートよりも大きい金属製の第1ハウジング及び第2ハウジングと、
ロウ付け前に、上記コア部を挟んで第1,第2ハウジングを積層方向に加圧して、上記コア部が存在する径方向中央側で凸に膨らむように弾性変形させることにより、上記コア部よりも径方向外方へ張り出した上記第1,第2ハウジングの外周部を、上記積層方向に関してロウ付け後の正規寸法状態まで弾性変形させた状態で、これら第1,第2ハウジングの外周部同士を固定して、積層方向での相対位置を拘束させる仮止め部と、
を有することを特徴とするロウ付け部材。
A plurality of plates having a brazing material layer on the surface are laminated, and the brazing material layer is melted by heating at the time of brazing, so that adjacent plates in the laminating direction are brazed together with a reduction in the dimension of the core in the laminating direction. A core part attached,
A metal first housing and a second housing larger than the plate sandwiching the core portion in the stacking direction;
Before brazing, the first and second housings are pressed in the laminating direction across the core part, and elastically deformed so as to bulge out convexly on the radial center side where the core part exists. the first projecting radially outward than the outer peripheral portion of the second housing, in a state of being elastically deformed to a proper size state after brazing respect the stacking direction, these first, outer peripheral portion of the second housing A temporary fixing part that fixes the other and restrains the relative position in the stacking direction ;
A brazing member comprising:
上記第1ハウジングが、上記コア部の外周を囲繞する筒部を有する略有底筒状をなし、
上記仮止め部が、上記筒部の開口周縁部と、第2ハウジングの外周縁部と、の結合部に沿って設けられることを特徴とする請求項1に記載のロウ付け部材。
The first housing has a substantially bottomed cylindrical shape having a cylindrical portion surrounding the outer periphery of the core portion,
The brazing member according to claim 1, wherein the temporary fixing portion is provided along a connecting portion between an opening peripheral edge portion of the cylindrical portion and an outer peripheral edge portion of the second housing.
上記第1,第2ハウジングが、コア部の積層方向両端に配置される略板状をなしており、
上記仮止め部では、上記第1,第2ハウジングの外周部とコア部の外周部とが積層方向に沿って固定されていることを特徴とする請求項1に記載のロウ付け部材。
The first and second housings have a substantially plate shape disposed at both ends of the core portion in the stacking direction,
2. The brazing member according to claim 1, wherein in the temporary fixing portion, an outer peripheral portion of the first and second housings and an outer peripheral portion of the core portion are fixed along a stacking direction.
表面にロウ材層を備えた複数のプレートが積層され、ロウ付け時に加熱によりロウ材層が溶融することによって、コア部の積層方向寸法の縮小を伴いつつ、積層方向で隣り合うプレートが互いにロウ付けされるコア部と、
このコア部を積層方向に挟む上記プレートよりも大きい金属製の第1ハウジング及び第2ハウジングと、
を有するロウ付け部材の製造方法において、
ロウ付け前に、上記コア部を挟んで第1,第2ハウジングを積層方向に加圧して、上記コア部が存在する径方向中央側で凸に膨らむように弾性変形させることにより、上記コア部よりも径方向外方へ張り出した上記第1,第2ハウジングの外周部を、上記積層方向に関してロウ付け後の正規寸法状態まで弾性変形させた状態で、これら第1,第2ハウジングの外周部同士を固定して、積層方向での相対位置を拘束させた中間成形体を形成し、
この中間成形体を加熱することによりロウ付けを行うことを特徴とするロウ付け部材の製造方法。
A plurality of plates having a brazing material layer on the surface are laminated, and the brazing material layer is melted by heating at the time of brazing, so that adjacent plates in the laminating direction are brazed together with a reduction in the dimension of the core in the laminating direction. A core part attached,
A metal first housing and a second housing larger than the plate sandwiching the core portion in the stacking direction;
In a method of manufacturing a brazing member having
Before brazing , the first and second housings are pressed in the laminating direction across the core part, and elastically deformed so as to bulge out convexly on the radial center side where the core part exists. the first projecting radially outward than the outer peripheral portion of the second housing, in a state of being elastically deformed to a proper size state after brazing respect the stacking direction, these first, outer peripheral portion of the second housing Fixing each other, forming an intermediate molded body that restrains the relative position in the stacking direction ,
A method for producing a brazing member, characterized in that brazing is performed by heating the intermediate formed body.
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JP5107604B2 (en) * 2007-04-27 2012-12-26 株式会社ティラド Heat exchanger manufacturing method and heat exchanger
JP5233195B2 (en) * 2007-07-27 2013-07-10 株式会社豊田中央研究所 Plate laminate and manufacturing method thereof
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0487726A (en) * 1990-07-30 1992-03-19 Calsonic Corp Manufacture for core part of housingless type oil cooler
JPH09295132A (en) * 1996-05-02 1997-11-18 Sumitomo Light Metal Ind Ltd Brazing method and cushion rail used therefor
JPH1014178A (en) * 1996-06-21 1998-01-16 Toshiba Corp Manufacture of core
JP2001012887A (en) * 1999-06-30 2001-01-19 Denso Corp Heat exchanger and brazing method thereof
JP2001047166A (en) * 2000-01-01 2001-02-20 Bosch Automotive Systems Corp Tube for heat exchanger and its priduction
JP2004042055A (en) * 2002-07-09 2004-02-12 Sumitomo Precision Prod Co Ltd Brazing method for plate fin type heat exchanger

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0487726A (en) * 1990-07-30 1992-03-19 Calsonic Corp Manufacture for core part of housingless type oil cooler
JPH09295132A (en) * 1996-05-02 1997-11-18 Sumitomo Light Metal Ind Ltd Brazing method and cushion rail used therefor
JPH1014178A (en) * 1996-06-21 1998-01-16 Toshiba Corp Manufacture of core
JP2001012887A (en) * 1999-06-30 2001-01-19 Denso Corp Heat exchanger and brazing method thereof
JP2001047166A (en) * 2000-01-01 2001-02-20 Bosch Automotive Systems Corp Tube for heat exchanger and its priduction
JP2004042055A (en) * 2002-07-09 2004-02-12 Sumitomo Precision Prod Co Ltd Brazing method for plate fin type heat exchanger

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