JP2015183827A - bearing member - Google Patents

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JP2015183827A
JP2015183827A JP2014063444A JP2014063444A JP2015183827A JP 2015183827 A JP2015183827 A JP 2015183827A JP 2014063444 A JP2014063444 A JP 2014063444A JP 2014063444 A JP2014063444 A JP 2014063444A JP 2015183827 A JP2015183827 A JP 2015183827A
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Prior art keywords
groove
bearing member
bearing
hole
sliding
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大輔 関
Daisuke Seki
大輔 関
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Taiho Kogyo Co Ltd
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Taiho Kogyo Co Ltd
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Priority to JP2014063444A priority Critical patent/JP2015183827A/en
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  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

PROBLEM TO BE SOLVED: To suppress leakage of lubricant from a junction part without shortening an oil supply amount to another bearing.SOLUTION: On a slide surface 12 of a first bearing member 10 constituting a halved slide bearing, a groove 15 extending in a slide direction is provided; at a position that is not center in a slide direction, a hole 14 penetrating from an outer peripheral surface 11 to the groove 15 is provided; and the depth of the groove 15 is maximum at the position of the hole 14 and is continuously reduced as getting close to both ends of the groove 15.

Description

本発明は、軸受部材に関する。   The present invention relates to a bearing member.

特許文献1には、半割り軸受における摺動面の円周方向全域に潤滑油を流通させる油溝を形成し、油溝はクラッシリリーフを通って接合部に開口するとともに、油溝の底部はクラッシリリーフの円周方向における接合部側の部分が中央側の部分よりも半割り軸受の中心側に近づくように形成されているすべり軸受が記載されている。   In Patent Document 1, an oil groove for circulating lubricating oil is formed in the entire circumferential direction of the sliding surface of the half bearing, and the oil groove opens through the crush relief to the joint, and the bottom of the oil groove is A slide bearing is described in which a portion on the joint portion side in the circumferential direction of the crash relief is formed so as to be closer to the center side of the half bearing than the portion on the center side.

特開2005−76755号公報JP-A-2005-76755

特許文献1に記載された技術では、油溝の幅が一定であるため、接合部からの潤滑油の漏れを十分に抑制することができない。また、このすべり軸受を主軸受として用いた場合、主軸受に供給された潤滑油の一部が、クランクシャフトの内部に設けられた通路を通じてコンロッド軸受に供給されるが、特許文献1に記載された技術では、コンロッド軸受への給油量の不足によってコンロッド軸受が損傷するおそれがある。
そこで、本発明は、他の軸受への給油量を不足させることなく、接合部からの潤滑油の漏れを抑制することのできる軸受部材を提供する。
In the technique described in Patent Document 1, since the oil groove width is constant, leakage of the lubricating oil from the joint portion cannot be sufficiently suppressed. Further, when this sliding bearing is used as a main bearing, a part of the lubricating oil supplied to the main bearing is supplied to the connecting rod bearing through a passage provided inside the crankshaft. In other technologies, the connecting rod bearing may be damaged due to insufficient oil supply to the connecting rod bearing.
Therefore, the present invention provides a bearing member that can suppress the leakage of lubricating oil from the joint without making the amount of oil supplied to other bearings insufficient.

本発明は、半割りのすべり軸受を構成する軸受部材であって、摺動面に、摺動方向に延びる溝を備え、摺動方向の中央でない位置に、外周面から前記溝に貫通する孔を備え、前記溝の深さは、前記孔の位置で最大であり、前記溝の両端に近づくにつれて連続的に減少する軸受部材を提供する。
上記の構成において、前記溝は、前記軸受部材と対をなす軸受部材との接合部に到達していてもよい。
上記の構成において、前記溝は、前記軸受部材と対をなす軸受部材との接合部に到達していなくてもよい。
The present invention is a bearing member that constitutes a half-slide bearing, and includes a groove that extends in the sliding direction on a sliding surface, and a hole that penetrates the groove from the outer peripheral surface at a position that is not the center in the sliding direction. The groove depth is maximum at the position of the hole and provides a bearing member that decreases continuously as it approaches both ends of the groove.
Said structure WHEREIN: The said groove | channel may reach | attain the junction part with the bearing member which makes a pair with the said bearing member.
In the above configuration, the groove may not reach a joint portion between the bearing member and the bearing member.

本発明によれば、他の軸受への給油量を不足させることなく、接合部からの潤滑油の漏れを抑制することができる。   According to the present invention, it is possible to suppress the leakage of the lubricating oil from the joint without making the amount of oil supplied to the other bearings insufficient.

軸方向を法線とするすべり軸受1の断面図。Sectional drawing of the plain bearing 1 which makes an axial direction a normal line. 軸方向を法線とする第1軸受部材10の断面図。Sectional drawing of the 1st bearing member 10 which makes an axial direction a normal line. 図2の矢視Iにおけるすべり軸受1の図。The figure of the plain bearing 1 in the arrow I of FIG. 摺動方向を法線とする第1軸受部材10の断面図。Sectional drawing of the 1st bearing member 10 which makes a sliding direction a normal line. 図4(a)を拡大した図。The figure which expanded Fig.4 (a). 変形例を示す図。The figure which shows a modification. 変形例を示す図。The figure which shows a modification. 変形例を示す図。The figure which shows a modification. 変形例を示す図。The figure which shows a modification. 変形例を示す図。The figure which shows a modification. 変形例を示す図。The figure which shows a modification. 変形例を示す図。The figure which shows a modification.

本発明の一実施形態について説明する。本実施形態では、内燃機関のシリンダーブロックにおいてクランクシャフトのジャーナルを支持する主軸受に本発明を適用した例を示す。図1は、軸方向を法線とするすべり軸受1の断面図である。図2は、軸方向を法線とする第1軸受部材10の断面図である。図3は、図2の矢視Iにおける第1軸受部材10の図である。なお、図1と図2は、図3におけるII-II線で切断した断面を示す。以下の説明では、軸300の回転方向を摺動方向と呼び、図1、図2において摺動方向に垂直な方向を半径方向と呼ぶ。   An embodiment of the present invention will be described. In the present embodiment, an example is shown in which the present invention is applied to a main bearing that supports a journal of a crankshaft in a cylinder block of an internal combustion engine. FIG. 1 is a cross-sectional view of a plain bearing 1 having an axial direction as a normal line. FIG. 2 is a cross-sectional view of the first bearing member 10 whose normal is the axial direction. FIG. 3 is a view of the first bearing member 10 in the direction of arrow I in FIG. 1 and 2 show a cross section taken along line II-II in FIG. In the following description, the rotation direction of the shaft 300 is referred to as a sliding direction, and the direction perpendicular to the sliding direction in FIGS. 1 and 2 is referred to as a radial direction.

すべり軸受1は、半割りのすべり軸受を構成する一対の部材である第1軸受部材10と第2軸受部材50とを備える。第1軸受部材10は、本発明に係る軸受部材の一例である。第1軸受部材10の外周面11は、シリンダーブロック100に固定される。第1軸受部材10の接合部13と第2軸受部材50の接合部53とが接合され、第2軸受部材50の外周面51を覆うようにキャップ200がシリンダーブロック100に固定される。クランクシャフトのジャーナルである軸300は、第1軸受部材10の摺動面12と第2軸受部材50の摺動面52との間の空間に保持される。第1軸受部材10は、軸受合金で形成されたライニングのみの一層構造でもよいし、ライニングを補強する裏金が設けられた二層構造でもよいし、これらに加えて摺動面12の特性を改善するオーバーレイ(コーティング)などが設けられた多層構造でもよい。   The slide bearing 1 includes a first bearing member 10 and a second bearing member 50 which are a pair of members constituting a half-sliding bearing. The first bearing member 10 is an example of a bearing member according to the present invention. The outer peripheral surface 11 of the first bearing member 10 is fixed to the cylinder block 100. The joint portion 13 of the first bearing member 10 and the joint portion 53 of the second bearing member 50 are joined, and the cap 200 is fixed to the cylinder block 100 so as to cover the outer peripheral surface 51 of the second bearing member 50. A shaft 300 that is a journal of the crankshaft is held in a space between the sliding surface 12 of the first bearing member 10 and the sliding surface 52 of the second bearing member 50. The first bearing member 10 may have a single-layer structure of only a lining formed of a bearing alloy, or may have a two-layer structure provided with a backing metal that reinforces the lining, and in addition to these, the characteristics of the sliding surface 12 are improved. It may be a multilayer structure provided with an overlay (coating) or the like.

図4は、摺動方向を法線とする第1軸受部材10の断面図である。図4において、(a)は、図2のIII−III断面図であり、(b)は、図2のIV−IV断面図であり、(c)は、図2のV−V断面図である。摺動面12には、摺動方向に延びる溝15が設けられている。溝15は、摺動面12を摺動方向に貫いて、両方の接合部13まで到達している。   FIG. 4 is a cross-sectional view of the first bearing member 10 whose normal is the sliding direction. 4A is a sectional view taken along line III-III in FIG. 2, FIG. 4B is a sectional view taken along line IV-IV in FIG. 2, and FIG. 4C is a sectional view taken along line VV in FIG. is there. The sliding surface 12 is provided with a groove 15 extending in the sliding direction. The groove 15 penetrates the sliding surface 12 in the sliding direction and reaches both joints 13.

図1に示されるように、シリンダーブロック100には、すべり軸受1に潤滑油を供給する通路101が設けられており、第1軸受部材10のこの通路101に対応する位置には、外周面11から溝15に向かって貫通する孔14が設けられている。本実施形態では、第1軸受部材10の摺動方向の2箇所に孔14が設けられている例を示す。オイルポンプ(図示省略)から通路101を経由して圧送された潤滑油は、孔14を通過して溝15に供給される。軸300が駆動されると、軸300と摺動面12との間にくさび効果により油膜が形成される。   As shown in FIG. 1, the cylinder block 100 is provided with a passage 101 for supplying lubricating oil to the slide bearing 1, and an outer peripheral surface 11 is provided at a position corresponding to the passage 101 of the first bearing member 10. A hole 14 penetrating from the groove 15 toward the groove 15 is provided. In this embodiment, an example is shown in which holes 14 are provided at two locations in the sliding direction of the first bearing member 10. The lubricating oil pumped from the oil pump (not shown) through the passage 101 passes through the hole 14 and is supplied to the groove 15. When the shaft 300 is driven, an oil film is formed between the shaft 300 and the sliding surface 12 due to the wedge effect.

軸300の内部には、潤滑油を流通させるための通路301が設けられている。この通路301は、軸300の中心を通って半径方向に貫通しており、この貫通した区間内の1点から軸300の内部を通過してコンロッド軸受(図示省略)に到達する。溝15に供給された潤滑油の一部は、通路301を通過してコンロッド軸受に供給される。   Inside the shaft 300, a passage 301 is provided for circulating lubricating oil. The passage 301 passes through the center of the shaft 300 in the radial direction, and passes through the inside of the shaft 300 from one point in the penetrating section to reach a connecting rod bearing (not shown). A part of the lubricating oil supplied to the groove 15 passes through the passage 301 and is supplied to the connecting rod bearing.

図4に示されるように、溝15は、底部15aと、第1側壁15bと、第2側壁15cとを有する。摺動方向を法線とする断面において、底部15aは、摺動面12と平行に形成されており、第1側壁15bは、底部15aの両端から摺動面12に向かって直線状に形成されており、第2側壁15cは、第1側壁15bの摺動面12側の端部と摺動面12とを結ぶように直線状に形成されている。   As shown in FIG. 4, the groove 15 has a bottom portion 15a, a first side wall 15b, and a second side wall 15c. In the cross section whose normal is the sliding direction, the bottom 15a is formed parallel to the sliding surface 12, and the first side wall 15b is formed linearly from both ends of the bottom 15a toward the sliding surface 12. The second side wall 15 c is formed in a straight line so as to connect the end of the first side wall 15 b on the sliding surface 12 side and the sliding surface 12.

図5は、図4(a)を拡大した図である。摺動方向を法線とする断面において、摺動面12に近づくほど2つの第1側壁15b間の距離、及び、2つの第2側壁15c間の距離が広がるように形成されている。また、2つの第2側壁15cのなす角度θ2は、2つの第1側壁15bのなす角度θ1よりも大きい。なお、2つの第1側壁15bが平行に形成されていてもよい。   FIG. 5 is an enlarged view of FIG. In the cross section having the sliding direction as a normal line, the distance between the two first side walls 15b and the distance between the two second side walls 15c are increased as the sliding surface 12 is approached. The angle θ2 formed by the two second side walls 15c is larger than the angle θ1 formed by the two first side walls 15b. The two first side walls 15b may be formed in parallel.

図2、図4に示されるように、溝15の深さは、孔14の位置で最大であり、溝15の両端に近づくにつれて連続的に減少する。また、第2側壁15cの高さは、孔14の位置で最大であり、溝15の両端に近づくにつれて連続的に減少し、接合部13の手前の位置で第2側壁15cが消失する。第2側壁15cが消失した位置から接合部13までの区間では、溝15は、底部15aと第1側壁15bとで構成される。このように構成されているため、図3に示されるように、摺動面12における溝15の幅(すなわち、第2側壁15cと摺動面12との境界線同士の距離)は、孔14の位置で最大であり、溝15の両端に近づくにつれて連続的に減少する。   As shown in FIGS. 2 and 4, the depth of the groove 15 is maximum at the position of the hole 14 and continuously decreases as the both ends of the groove 15 are approached. Further, the height of the second side wall 15c is maximum at the position of the hole 14, and continuously decreases toward the both ends of the groove 15, and the second side wall 15c disappears at a position in front of the joint portion 13. In the section from the position where the second side wall 15c disappears to the joint portion 13, the groove 15 is composed of a bottom portion 15a and a first side wall 15b. Since it is configured in this way, as shown in FIG. 3, the width of the groove 15 in the sliding surface 12 (that is, the distance between the boundary lines of the second side wall 15 c and the sliding surface 12) is the hole 14. And continuously decreases as the both ends of the groove 15 are approached.

本実施形態では、溝15の深さは、孔14の位置で最大となり、溝15の両端に近づくにつれて連続的に減少する。そのため、摺動方向を法線とする断面において、溝15の断面積は、孔14の位置で最大であり、溝15の両端にに近づくにつれて減少する。この構成によれば、溝15の深さが孔14以外の位置で最大である構成と比べて、他の軸受への給油量を増大させることができるから、他の軸受への給油量を不足させることなく、接合部からの潤滑油の漏れを抑制することができる。   In the present embodiment, the depth of the groove 15 is maximum at the position of the hole 14 and continuously decreases as the both ends of the groove 15 are approached. Therefore, in the cross section whose normal is the sliding direction, the cross-sectional area of the groove 15 is the maximum at the position of the hole 14 and decreases as it approaches both ends of the groove 15. According to this configuration, compared to the configuration in which the depth of the groove 15 is maximum at a position other than the hole 14, the amount of oil supplied to the other bearing can be increased, and therefore the amount of oil supplied to the other bearing is insufficient. Without causing the leakage of the lubricating oil from the joint portion.

また、本実施形態では、溝15が接合部13に到達しているから、異物が接合部13に排出されることにより、潤滑性の低下を抑制することができる。   Moreover, in this embodiment, since the groove | channel 15 has reached | attained the junction part 13, when a foreign material is discharged | emitted by the junction part 13, the fall of lubricity can be suppressed.

上記の実施形態を以下のように変形してもよい。また、複数の変形例を組み合わせてもよい。
実施形態では、第2側壁15cの高さが孔14から離れるにつれて連続的に減少し、接合部13の手前の位置で第2側壁15cが消失する例を示したが、図6に示されるように、接合部13の手前の位置で第2側壁15cが消失せずに、接合部13においても第2側壁15cが存在するように構成されていてもよい。
The above embodiment may be modified as follows. A plurality of modified examples may be combined.
In the embodiment, the example in which the height of the second side wall 15c continuously decreases as the distance from the hole 14 decreases and the second side wall 15c disappears at a position in front of the joint portion 13 is shown in FIG. In addition, the second side wall 15 c may not be lost at the position before the joint portion 13, and the second side wall 15 c may exist in the joint portion 13.

実施形態では、孔14の位置で溝15の深さが最大である例を示したが、図7に示されるように、孔14の位置以外の位置で溝15の深さが最大となるように構成されていてもよい。   In the embodiment, the example in which the depth of the groove 15 is the maximum at the position of the hole 14 has been shown, but as shown in FIG. 7, the depth of the groove 15 is maximized at a position other than the position of the hole 14. It may be configured.

実施形態は、溝15が接合部13まで到達している例を示したが、図8に示されるように、溝15が接合部13に到達しないように構成されていてもよい。   Although the embodiment shows an example in which the groove 15 reaches the joint portion 13, the groove 15 may be configured not to reach the joint portion 13 as shown in FIG. 8.

実施形態では、摺動方向の2箇所に孔14が設けられている例を示したが、図9に示されるように、摺動方向の1箇所(ただし、摺動方向の中央以外の位置)に孔14が設けられている構成に本発明を適用してもよい。また、摺動方向の3箇所以上に孔14が設けられている構成に本発明を適用してもよい。   In the embodiment, the example in which the holes 14 are provided in two places in the sliding direction is shown. However, as shown in FIG. 9, one place in the sliding direction (however, a position other than the center in the sliding direction). The present invention may be applied to a configuration in which the hole 14 is provided. Moreover, you may apply this invention to the structure by which the hole 14 is provided in three or more places of a sliding direction.

また、図10、図11、図12に示されるように、溝15が底部15aと第1側壁15bとで構成され、第2側壁15cが設けられていなくてもよい。図10は、軸方向を法線とする第1軸受部材10の断面図(図11におけるII-II線で切断した断面)である。図11は、図10の矢視Iにおける第1軸受部材10の図である。図12は、摺動方向を法線とする第1軸受部材10の断面図である。図12において、(a)は、図10のIII−III断面図であり、(b)は、図10のIV−IV断面図であり、(c)は、図10のV−V断面図である。   Further, as shown in FIGS. 10, 11, and 12, the groove 15 is composed of a bottom portion 15a and a first side wall 15b, and the second side wall 15c may not be provided. FIG. 10 is a cross-sectional view of the first bearing member 10 having a normal line in the axial direction (a cross section taken along line II-II in FIG. 11). FIG. 11 is a view of the first bearing member 10 in the direction of arrow I in FIG. FIG. 12 is a cross-sectional view of the first bearing member 10 whose normal is the sliding direction. 12A is a sectional view taken along line III-III in FIG. 10, FIG. 12B is a sectional view taken along line IV-IV in FIG. 10, and FIG. 12C is a sectional view taken along line VV in FIG. is there.

実施形態では、主軸受に供給された潤滑油の一部がコンロッド軸受に供給される例を示したが、コンロッド軸受以外の軸受(バランサ軸受など)に対して潤滑油を給油する構成に対して本発明を適用してもよい。   In the embodiment, an example in which a part of the lubricating oil supplied to the main bearing is supplied to the connecting rod bearing is shown. However, for a configuration in which lubricating oil is supplied to a bearing (such as a balancer bearing) other than the connecting rod bearing. The present invention may be applied.

1 すべり軸受、10 第1軸受部材、11 外周面、12 摺動面、13 接合部、14 孔、15 溝、15a 底部、15b 第1側壁、15c 第2側壁 DESCRIPTION OF SYMBOLS 1 Slide bearing, 10 1st bearing member, 11 Outer peripheral surface, 12 Sliding surface, 13 Joint part, 14 Hole, 15 Groove, 15a Bottom part, 15b 1st side wall, 15c 2nd side wall

Claims (3)

半割りのすべり軸受を構成する軸受部材であって、
摺動面に、摺動方向に延びる溝を備え、
摺動方向の中央でない位置に、外周面から前記溝に貫通する孔を備え、
前記溝の深さは、前記孔の位置で最大であり、前記溝の両端に近づくにつれて連続的に減少する
軸受部材。
A bearing member constituting a half-sliding bearing,
The sliding surface has a groove extending in the sliding direction,
Provided with a hole that penetrates the groove from the outer peripheral surface at a position that is not the center in the sliding direction,
The depth of the groove is the maximum at the position of the hole, and continuously decreases as it approaches both ends of the groove.
前記溝は、前記軸受部材と対をなす軸受部材との接合部に到達している
請求項1に記載の軸受部材。
The bearing member according to claim 1, wherein the groove reaches a joint portion between the bearing member paired with the bearing member.
前記溝は、前記軸受部材と対をなす軸受部材との接合部に到達していない
請求項1に記載の軸受部材。
The bearing member according to claim 1, wherein the groove does not reach a joint portion between the bearing member paired with the bearing member.
JP2014063444A 2014-03-26 2014-03-26 bearing member Pending JP2015183827A (en)

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