WO2012032888A1 - 軽合金部材に鋳込まれる鉄系金属製のベアリングキャップ - Google Patents
軽合金部材に鋳込まれる鉄系金属製のベアリングキャップ Download PDFInfo
- Publication number
- WO2012032888A1 WO2012032888A1 PCT/JP2011/067872 JP2011067872W WO2012032888A1 WO 2012032888 A1 WO2012032888 A1 WO 2012032888A1 JP 2011067872 W JP2011067872 W JP 2011067872W WO 2012032888 A1 WO2012032888 A1 WO 2012032888A1
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- WIPO (PCT)
- Prior art keywords
- bearing cap
- light alloy
- iron
- cast
- alloy member
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C9/00—Bearings for crankshafts or connecting-rods; Attachment of connecting-rods
- F16C9/02—Crankshaft bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2220/00—Shaping
- F16C2220/02—Shaping by casting
- F16C2220/04—Shaping by casting by injection-moulding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2360/00—Engines or pumps
- F16C2360/22—Internal combustion engines
Definitions
- the present invention relates to a bearing cap axially supporting a crankshaft journal of an internal combustion engine, and more particularly to a bearing cap cast in a light alloy member as a core.
- the light alloy member that has entered the recess of the bearing cap expands more than the bearing cap made of the iron-based member, and therefore the bearing surface of the bearing cap may be deformed. was there.
- the present invention has been made in view of such problems, and is made of a ferrous metal bearing cast in a light alloy member suitable for reducing the deformation of the bearing surface and improving the bondability with the light alloy member. Intended to provide a cap.
- a bearing cap made of iron-based metal cast as a core in a light alloy member is disposed continuously with an arc-shaped portion forming a bearing surface and both ends of the arc-shaped portion
- the apparatus is characterized by including left and right flanges and a boss which is disposed upright on the back side of the left and right flanges and through which a mounting bolt is inserted, and a groove or a convex is formed in the boss.
- FIG. 1 is a schematic block diagram of a bearing cap made of iron-based metal cast in a light alloy member showing one embodiment of the present invention.
- FIG. 2 is a cross-sectional view taken along the line II-II in FIG.
- FIG. 3 is a perspective view of a bearing cap.
- FIG. 4 is an explanatory view showing a casting mold of the boss of the bearing cap.
- FIG. 5 is an explanatory view showing a casting mold of the central portion of the bearing cap.
- FIG. 6 is a plan view of a rudder frame in which a bearing cap is cast.
- 7 is a cross-sectional view taken along the line VII-VII in FIG.
- FIG. 8 is a cross-sectional view taken along the line VIII-VIII in FIG.
- the iron-based metal bearing cap 1 cast in the light alloy member is made of iron-based metal.
- the bearing cap 1 is disposed upright on the back side of the arc-shaped portion 2 forming the bearing surface, the flange portion 3 continuous with both ends of the arc-shaped portion 2 and extending on both sides, and both flange portions 3 And a boss 4 through which a bolt is inserted. Further, the bearing cap 1 is disposed apart from the back surface of the arc-shaped portion 2 and is connected to the connecting beam 5 connecting the distal end sides of the both bosses 4 and the connecting portions of the connecting beam 5 and the boss 4 A pair of reinforcing beams 6 connected to the back surface of the arc-shaped portion 2 are integrally provided.
- the circular arc-shaped portion 2 forming the bearing surface and the flange portion 3 extending on both sides continuously with the both ends have a rectangular cross section with the same width and thickness.
- a bearing surface for supporting the crank journal via a bearing metal (not shown) is formed on the arcuate surface of the arcuate portion 2.
- the upper surface of the flange portion 3 which is continuous with both ends and extends on both sides is formed in a flat surface and abuts on the lower end surface of the bulkhead of the cylinder block.
- the boss portion 4 which is arranged to be erected on the back side of each of the two flange portions 3 and through which the mounting bolt is inserted has two bolt holes 11 passing through the flange portion 3. Equipped with two bosses 10. As shown in FIG. 2, the two bolt holes 11 are spaced apart, and the two bosses 10 surrounding the bolt holes 11 are also spaced apart, so that the thickness of the bosses 10 between the two bosses 10 is increased. Forming a groove 12 of comparable depth.
- the bosses 10 are connected to each other by a rib 13 disposed across the groove 12 between the bosses 10 on the tip end side.
- the bosses 10 are connected by the thin portion forming the groove 12 and by the flange portion 3 on the base end side and the rib 13 on the tip end side, thereby enhancing the rigidity.
- the groove 12 between the bosses 10 is formed in a basin-like space (closed space) whose both ends are closed by the ribs 13 and the rear surface of the flange portion 3.
- connection beam 5 is disposed apart from the back surface of the arc-shaped portion 2 and connects the tip sides of both boss portions 4 to each other.
- the connection beam 5 is connected to the boss portion 4 at a position where the rib 13 connecting the bosses 10 of the boss portion 4 on the tip end side is arranged, and the rib 13 and the connection beam 5 are arranged substantially in the same straight line It is done.
- the pair of bosses 4 are connected to each other by the connection beam 5 at the position where the rib 13 is disposed on the tip end side, and the bosses 4 are supported by each other, thereby enabling rigidity and weight reduction. . That is, by being connected to each other by the flange portion 3 and the arc-shaped portion 2 on the base end side and by the connecting beam 5 on the tip end side, a rigid frame shape is formed to improve its rigidity. That is, the bearing cap 1 bends the lateral bending direction bending surface including the flange portion 3 arc portion 2 boss portion 4 connection beam 5, longitudinal bending rigidity in these surfaces, and twists these surfaces. Torsional rigidity can be enhanced.
- the pair of reinforcing beams 6 connect the connecting portions of the connecting beam 5 and the boss portion 4 in an oblique direction with respect to the back surface of the arc-shaped portion 2.
- the rigidity in the plane including the boss portion 4, the connection beam 5, the flange portion 3 and the arc-shaped portion 2 can be further improved.
- a penetrating space 14 surrounded by reinforcing beams 6 on both sides is formed between the connecting beam 5 and the arc-shaped portion 2, and a partially arc-shaped portion 2 is also formed between the reinforcing beams 6 and the boss portion 4.
- a through space 15 is formed in contact with the back of the
- FIG. 4 is an explanatory view showing a casting mold of the boss portion 4 of the bearing cap 1
- FIG. 5 is an explanatory view showing a casting mold of the central portion of the bearing cap 1.
- the mold includes an upper die 21 having a cavity engraved in the shape of the arc-shaped portion 2 and the flange portion 3, and the flange portion 3 and the arc-shaped portion 2 from the center of the rib 13 of the boss portion 4 and the connecting beam 5.
- a horizontal mold 22 having a side surface shape up to the side surface, and a lower mold 23 provided with a rib 13 of the boss 4 and a cavity of a shape from the center to the lower side of the connecting beam 5. Burrs are generated at the mating surfaces of the horizontal mold 22 and the lower mold 23 and the upper mold 21 of the cast bearing cap 1, but these burrs are at the center of the connecting beam 5, the top of the rib 13, and arc-shaped It is at the edge of the part 2 and the flange part 3 and can be easily removed.
- FIG. 6 shows a rudder frame 30 in a V-type 6-cylinder engine, in which four bearing cap parts 31 incorporating the bearing cap 1 cast inside and the both end faces of these bearing cap parts 31 are connected. And a connecting portion 32 that constitutes the case.
- the bearing cap 1 cast in the bearing cap 31 is, as shown in FIGS. 7 and 8, the boss 4 in the lower region excluding the arc 2 and the flange 3, the connecting beam 5 and the reinforcing beam 6 are made of light alloy. Wrapped by the material. For this reason, a light alloy material is penetrated and filled in the through space 14 surrounded by the reinforcing beam 6 on both sides of the bearing cap 1 and the through space 15 between the reinforcing beam 6 and the boss 4.
- the boss 4 is also surrounded by a light alloy material, and only the end of the boss 10 is exposed from the light alloy material. Therefore, the light alloy material is also filled in the groove 12 formed between the bosses 10 and closed at both ends by the rib 13 and the back surface of the flange portion 3 and formed in the basin-like space (closed space).
- the bearing cap 1 is held by the contraction force of the light alloy material after the rudder frame 30 is cast.
- the above-mentioned contraction force is reduced due to the temperature rise accompanying engine operation. descend.
- both ends are closed by the rib 13 and the back surface of the flange portion 3 between the bosses 10 and the groove 12 filled in the basin-like space (closed space) is filled.
- the light alloy material is restricted in expansion by the rib 13 and the flange portion 3.
- the contact pressure between the rib 13 and the back surface of the flange portion 3 is increased.
- the boss 4 in which the groove 12 is formed is separated from the arc-shaped portion 2 in which the bearing surface is formed, so deformation of the bearing surface Less. Furthermore, since the bosses 4 in which the grooves 12 are formed have thermal expansion suppressed by the mounting bolts, the thermal expansion difference with the light alloy material becomes large, and the bondability between the bearing cap 1 and the light alloy member is enhanced.
- the bearing cap 1 into the light alloy member, the light alloy material is filled in the groove 12 formed in the boss 4. Then, the expansion of the light alloy material filled in the groove 12 is restricted by the groove 12 due to the temperature rise at the time of actual operation, so the holding force between the light alloy material and the bearing cap 1 formed of iron-based material It is possible to suppress the decline. As a result, the bondability with the light alloy member can be improved.
- the boss 4 in which the groove 12 is formed has thermal expansion suppressed by the mounting bolt, the thermal expansion difference with the light alloy member becomes large, and the bondability between the bearing cap 1 and the light alloy member is enhanced.
- the boss portion 4 has two bolt holes 11 passing through the flange portion 3 and two bosses 10 surrounding the bolt holes 11, and the groove 12 is formed between the two bosses. Further, the bosses are connected by a rib 13 disposed across the groove between the bosses on the tip end side.
- both ends are closed by the rib 13 and the back surface of the flange portion 3 between the bosses 10 and the light is also contained in the groove 12 formed in the basin-like space (closed space). It will be in the state filled with the alloy material.
- the light alloy material filled in the groove 12 formed in the basin-like space (closed space) is closed between the bosses 10 and both ends are closed by the rib 13 and the back surface of the flange portion 3 due to temperature rise during operation.
- the ribs 13 and the flanges 3 restrict expansion.
- the contact pressure between the rib 13 and the back surface of the flange portion 3 is increased according to the expansion of the light alloy material filled in the groove 12, and the bearing cap 1 formed of the light alloy material and the iron material The reduction in holding power can be suppressed. As a result, the bondability with the light alloy member can be improved without reducing the rigidity of the bearing cap 1.
- the pair of bosses 4 are connected to each other by the connecting beam 5 at the positions where the ribs 13 are disposed, so that the bosses 4 can support each other to increase rigidity and reduce weight.
- the pair of bosses 4 includes a pair of reinforcing beams 6 that obliquely connect each of the portions to which the connecting beams 5 are connected to the back surface of the arc-shaped portion 2.
- the bearing cap 1 is cast and formed by a casting mold in which the rib 13 and the connecting beam 5 are placed, so that the burr formed on the mold mating surface is at the center of the connecting beam 5 and the top of the rib 13 It can be positioned on the surface and can easily remove burrs.
- a groove is formed in the boss of the bearing cap, and a light alloy material is filled in the groove to improve the bonding between the bearing cap and the light alloy member.
- the same effect may be obtained by forming 100 (broken line in FIG. 3) and forming asperities with the light alloy material.
Abstract
Description
Claims (6)
- 軽合金部材にコアとして鋳込まれる鉄系金属製のベアリングキャップ(1)であって、
軸受面を形成する円弧状部(2)と、
円弧状部(2)の両端に連ねて配置される左右のフランジ部(3)と、
左右のフランジ部(3)の背面側に起立して配置され、取付ボルトを挿通するボス部(4)と、を備え、
前記ボス部(4)には、溝(12)又は凸部(100)が形成される軽合金部材に鋳込まれる鉄系金属製のベアリングキャップ(1)。 - 請求項1に記載の軽合金部材に鋳込まれる鉄系金属製のベアリングキャップ(1)であって、
前記ボス部(4)は、前記フランジ部(3)を貫通させて2本のボルト穴(11)を備えると共にこのボルト穴(11)を囲む2つのボス(10)を備え、
前記溝(12)は、両ボス(10)間に形成される軽合金部材に鋳込まれる鉄系金属製のベアリングキャップ(1)。 - 請求項2に記載の軽合金部材に鋳込まれる鉄系金属製のベアリングキャップ(1)であって、
前記ボス(10)同士は、先端側において前記ボス(10)間の溝(12)を横断して配置したリブ(13)により連結されている軽合金部材に鋳込まれる鉄系金属製のベアリングキャップ(1)。 - 請求項3に記載の軽合金部材に鋳込まれる鉄系金属製のベアリングキャップ(1)であって、
前記ボス部(4)は、リブ(13)が配置された位置において互いに連結ビーム(5)により連結されている軽合金部材に鋳込まれる鉄系金属製のベアリングキャップ(1)。 - 請求項4に記載の軽合金部材に鋳込まれる鉄系金属製のベアリングキャップ(1)であって、
前記ボス部(4)は、連結ビーム(5)が連結された部位の夫々を円弧状部(2)の背面に対して斜め方向に連結する一対の補強ビーム(6)を備える軽合金部材に鋳込まれる鉄系金属製のベアリングキャップ(1)。 - 請求項4又は請求項5に記載の軽合金部材に鋳込まれる鉄系金属製のベアリングキャップ(1)であって、
前記ベアリングキャップ(1)は、前記リブ(13)及び連結ビーム(5)がある部位で型合せされる鋳造型により鋳造成形される軽合金部材に鋳込まれる鉄系金属製のベアリングキャップ(1)。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR112013005243-0A BR112013005243B1 (pt) | 2010-09-06 | 2011-08-04 | tampa metálica de mancal a base de ferro a ser fundida em um componente de metal leve |
CN201180041100.3A CN103080573B (zh) | 2010-09-06 | 2011-08-04 | 浇铸在轻合金构件中的铁系金属制的轴承盖 |
MX2013001812A MX2013001812A (es) | 2010-09-06 | 2011-08-04 | Sombrerete de cojinete, en metal basado en fierro, para ser colado como un miembro de metal ligero. |
EP11823367.5A EP2615316B1 (en) | 2010-09-06 | 2011-08-04 | Iron-based metal bearing cap to be cast into light metal member |
RU2013106910/11A RU2529563C1 (ru) | 2010-09-06 | 2011-08-04 | Металлическая крышка подшипника на основе железа, которая должна быть залита внутри элемента из легкого металла |
JP2012532911A JP5403166B2 (ja) | 2010-09-06 | 2011-08-04 | 軽合金部材に鋳込まれる鉄系金属製のベアリングキャップ |
US13/820,947 US8690440B2 (en) | 2010-09-06 | 2011-08-04 | Iron-based metal bearing cap to be cast into light metal member |
Applications Claiming Priority (2)
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JP2010199119 | 2010-09-06 | ||
JP2010-199119 | 2010-09-06 |
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PCT/JP2011/067872 WO2012032888A1 (ja) | 2010-09-06 | 2011-08-04 | 軽合金部材に鋳込まれる鉄系金属製のベアリングキャップ |
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US (1) | US8690440B2 (ja) |
EP (1) | EP2615316B1 (ja) |
JP (1) | JP5403166B2 (ja) |
CN (1) | CN103080573B (ja) |
BR (1) | BR112013005243B1 (ja) |
MX (1) | MX2013001812A (ja) |
MY (1) | MY157385A (ja) |
RU (1) | RU2529563C1 (ja) |
WO (1) | WO2012032888A1 (ja) |
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WO2016051600A1 (ja) * | 2014-10-03 | 2016-04-07 | 日産自動車株式会社 | 内燃機関のベアリングキャップ |
JP2020037938A (ja) * | 2018-09-04 | 2020-03-12 | トヨタ自動車株式会社 | シリンダブロック組立体 |
US11199156B2 (en) | 2019-11-01 | 2021-12-14 | Toyota Jidosha Kabushiki Kaisha | Bearing cap, internal combustion engine, and manufacturing method of internal combustion engine |
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CN103437842A (zh) * | 2013-08-09 | 2013-12-11 | 芜湖市恒峰科技有限公司 | 一种发动机轴承盖 |
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WO2016051600A1 (ja) * | 2014-10-03 | 2016-04-07 | 日産自動車株式会社 | 内燃機関のベアリングキャップ |
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US11199156B2 (en) | 2019-11-01 | 2021-12-14 | Toyota Jidosha Kabushiki Kaisha | Bearing cap, internal combustion engine, and manufacturing method of internal combustion engine |
Also Published As
Publication number | Publication date |
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EP2615316B1 (en) | 2018-06-27 |
CN103080573B (zh) | 2015-07-15 |
MY157385A (en) | 2016-06-15 |
RU2529563C1 (ru) | 2014-09-27 |
BR112013005243A2 (pt) | 2016-04-26 |
EP2615316A4 (en) | 2017-10-25 |
JPWO2012032888A1 (ja) | 2014-01-20 |
RU2013106910A (ru) | 2014-10-20 |
BR112013005243B1 (pt) | 2020-10-27 |
US8690440B2 (en) | 2014-04-08 |
EP2615316A1 (en) | 2013-07-17 |
US20130170774A1 (en) | 2013-07-04 |
CN103080573A (zh) | 2013-05-01 |
MX2013001812A (es) | 2013-04-29 |
JP5403166B2 (ja) | 2014-01-29 |
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