JP6967875B2 - Sliding mechanism and compressor - Google Patents

Sliding mechanism and compressor Download PDF

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JP6967875B2
JP6967875B2 JP2017103357A JP2017103357A JP6967875B2 JP 6967875 B2 JP6967875 B2 JP 6967875B2 JP 2017103357 A JP2017103357 A JP 2017103357A JP 2017103357 A JP2017103357 A JP 2017103357A JP 6967875 B2 JP6967875 B2 JP 6967875B2
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sliding
sliding member
inclined surface
central axis
vane
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JP2018197540A (en
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森 長谷川
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Mitsubishi Electric Corp
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Description

本発明は、摺動機構および圧縮機に関する。 The present invention relates to a sliding mechanism and a compressor.

空気調和機、冷凍機等で使用される圧縮機として、例えばベーンと、シリンダに設けられベーンが内側を摺動するベーン溝を有するシリンダと、シリンダ内に配置され偏心回転するピストンと、を備える圧縮機が提供されている。ベーンは、シリンダ内に配置されたピストンの偏心回転に伴ってベーン溝内を上下に往復移動する。この種の圧縮機のうち特に冷凍機で使用される圧縮機では、ピストンの回転速度が低くベーンが低速で上下に往復移動するため、ベーンとベーン溝の内壁との間に潤滑油が保持されにくい。従って、ベーンとベーン溝の内壁との接触によるエネルギ損失やベーンの摩耗が発生する虞がある。 As a compressor used in an air conditioner, a refrigerator, etc., for example, a vane, a cylinder provided in the cylinder having a vane groove in which the vane slides inside, and a piston arranged in the cylinder and rotating eccentrically are provided. A compressor is provided. The vane reciprocates up and down in the vane groove with the eccentric rotation of the piston arranged in the cylinder. Of these types of compressors, especially those used in refrigerators, the piston rotation speed is low and the vane reciprocates up and down at a low speed, so that lubricating oil is retained between the vane and the inner wall of the vane groove. Hateful. Therefore, there is a risk of energy loss and vane wear due to contact between the vane and the inner wall of the vane groove.

これに対して、摺動する２つの摺動部材の摺動面の少なくとも一方に潤滑油を保持する微細な窪み部が設けられ摺動抵抗が低減された摺動機構が提案されている（例えば特許文献１参照）。窪み部は、例えば摺動部材の摺動面に鋼球を押し付けることにより形成される。窪み部は、平面視円形の椀状、即ち、平面視で等方的な形状を有する。 On the other hand, a sliding mechanism has been proposed in which a fine recess for holding the lubricating oil is provided on at least one of the sliding surfaces of the two sliding members to reduce the sliding resistance (for example). See Patent Document 1). The recess is formed, for example, by pressing a steel ball against the sliding surface of the sliding member. The recess has a circular bowl shape in a plan view, that is, an isotropic shape in a plan view.

特開２０１３−１３０１４３号公報Japanese Unexamined Patent Publication No. 2013-130143

圧縮機に特許文献１に記載された摺動機構を適用した場合、窪み部は平面視円形、即ち、等方的な形状を有する。この場合、ベーンをベーン溝に対して摺動させるときにベーンとベーン溝との間に介在する潤滑油から十分な動圧を得ることができずベーンの摺動面とベーン溝の摺動面とが接触し、ベーンの摺動面とベーン溝の摺動面とが接触することによるエネルギ損失やベーンの摩耗が発生してしまう。 When the sliding mechanism described in Patent Document 1 is applied to the compressor, the recessed portion has a circular shape in a plan view, that is, an isotropic shape. In this case, when the vane is slid with respect to the vane groove, sufficient dynamic pressure cannot be obtained from the lubricating oil interposed between the vane and the vane groove, and the sliding surface of the vane and the sliding surface of the vane groove cannot be obtained. Contact with the vane and the sliding surface of the vane and the sliding surface of the vane groove cause energy loss and wear of the vane.

本発明は、上記事由に鑑みてなされたものであり、摺動部材の摺動面同士の接触によるエネルギ損失および摺動部材の摩耗が低減された摺動機構および圧縮機を提供することを目的とする。 The present invention has been made in view of the above reasons, and an object of the present invention is to provide a sliding mechanism and a compressor in which energy loss due to contact between sliding surfaces of sliding members and wear of sliding members are reduced. And.

上記目的を達成するために、本発明に係る摺動機構は、複数の窪み部が形成された第１摺動面を有する第１摺動部材と、第１摺動部材の第１摺動面と潤滑油を介して対向する第２摺動面を有する第２摺動部材と、を備える。複数の窪み部は、それぞれ、平面視において、周縁全体が第１摺動面の周縁よりも内側に位置し、第１摺動部材に対して第２摺動部材が相対的に摺動する摺動方向に沿った中心軸方向の長さと中心軸方向と直交する方向の長さとが異なる異方的な形状を有し、中心軸と平行な一方向に向かって深さが増加する形で傾斜した第１傾斜面と、一方向に向かって深さが減少する形で傾斜した第２傾斜面と、を有する。そして、第１摺動面と直交する方向から見たときの複数の窪み部それぞれの中心軸は、前述の摺動方向に対して傾斜している。 In order to achieve the above object, the sliding mechanism according to the present invention includes a first sliding member having a first sliding surface in which a plurality of recessed portions are formed, and a first sliding surface of the first sliding member. And a second sliding member having a second sliding surface facing each other via a lubricating oil. In each of the plurality of recesses, the entire peripheral edge is located inside the peripheral edge of the first sliding surface in a plan view, and the second sliding member slides relative to the first sliding member. It has an anisotropic shape in which the length in the direction of the central axis along the direction of movement and the length in the direction orthogonal to the direction of the central axis are different, and it is inclined in a form that the depth increases in one direction parallel to the central axis. It has a first inclined surface and a second inclined surface inclined so as to decrease in depth in one direction. The central axes of the plurality of recesses when viewed from a direction orthogonal to the first sliding surface are inclined with respect to the above-mentioned sliding direction.

本発明によれば、第１摺動部材の第１摺動面に形成された複数の窪み部が、それぞれ、平面視において、上記中心軸方向の長さと前記中心軸方向と直交する方向の長さとが異なる異方的な形状を有し、上記中心軸に平行な一方向に向かって深さが増加する形で傾斜した第１傾斜面と、一方向に向かって深さが減少する形で傾斜した第２傾斜面と、を有する。そして、第１摺動面と直交する方向から見たときの複数の窪み部それぞれの中心軸は、前述の摺動方向に対して傾斜している。これにより、第１摺動部材と第２摺動部材との間に潤滑油が介在する場合、窪み部の平面視形状に応じて第１摺動部材と第２摺動部材との間に介在する潤滑油が窪み部の中心軸に沿って窪み部内へ流入する。そして、第１傾斜面に沿って窪み部内へ流入した潤滑油は、第２傾斜面に当たって第２傾斜面に沿って第２摺動部材へ近づく方向へ流れる。そして、この第２摺動部材へ近づく方向への潤滑油の流れにより、潤滑油から第２摺動部材に第１摺動部材から離れる方向への動圧を高めることができる。従って、第１摺動部材と第２摺動部材との接触が抑制されるので、第１摺動部材と第２摺動部材との摩擦によるエネルギ損失または第１摺動部材または第２摺動部材の摩耗が低減される。 According to the present invention, each of the plurality of recesses formed on the first sliding surface of the first sliding member has a length in the central axis direction and a length in a direction orthogonal to the central axis direction in a plan view. The first inclined surface, which has an anisotropic shape different from that of the above and is inclined in a direction increasing in one direction parallel to the central axis, and a shape in which the depth decreases in one direction. It has an inclined second inclined surface. The central axes of the plurality of recesses when viewed from a direction orthogonal to the first sliding surface are inclined with respect to the above-mentioned sliding direction. As a result, when the lubricating oil intervenes between the first sliding member and the second sliding member, it intervenes between the first sliding member and the second sliding member according to the plan view shape of the recessed portion. Lubricating oil flows into the recess along the central axis of the recess. Then, the lubricating oil that has flowed into the recess along the first inclined surface hits the second inclined surface and flows in the direction approaching the second sliding member along the second inclined surface. Then, the flow of the lubricating oil in the direction approaching the second sliding member can increase the dynamic pressure from the lubricating oil to the second sliding member in the direction away from the first sliding member. Therefore, since the contact between the first sliding member and the second sliding member is suppressed, energy loss due to friction between the first sliding member and the second sliding member or the first sliding member or the second sliding member is suppressed. Friction of members is reduced.

（Ａ）は本発明の実施の形態１に係る摺動機構を備えた装置を示す斜視図、（Ｂ）は（Ａ）に示す装置の一部を示す側面図(A) is a perspective view showing a device provided with a sliding mechanism according to the first embodiment of the present invention, and (B) is a side view showing a part of the device shown in (A). （Ａ）は実施の形態１に係る第１摺動部材の平面図、（Ｂ）は実施の形態１に係る第１摺動部材の一部を（Ａ）における内側から見たときの断面図(A) is a plan view of the first sliding member according to the first embodiment, and (B) is a cross-sectional view when a part of the first sliding member according to the first embodiment is viewed from the inside in (A). （Ａ）は実施の形態１に係る第１摺動部材の製造方法を説明するための断面図、（Ｂ）は実施の形態１に係る第１摺動部材の一部の拡大平面図(A) is a cross-sectional view for explaining a method of manufacturing the first sliding member according to the first embodiment, and (B) is an enlarged plan view of a part of the first sliding member according to the first embodiment. （Ａ）は本発明の実施の形態２に係る圧縮機の断面図、（Ｂ）は実施の形態２に係るベーンの斜視図(A) is a cross-sectional view of the compressor according to the second embodiment of the present invention, and (B) is a perspective view of the vane according to the second embodiment. （Ａ）は変形例に係る第１摺動部材の平面図、（Ｂ）は変形例に係る第１摺動部材の一部を（Ａ）における内側から見たときの断面図(A) is a plan view of the first sliding member according to the modified example, and (B) is a sectional view of a part of the first sliding member according to the modified example when viewed from the inside in (A). （Ａ）は変形例に係る第１摺動部材の製造方法を説明するための断面図、（Ｂ）は変形例に係る第１摺動部材の一部の拡大平面図(A) is a cross-sectional view for explaining a method of manufacturing the first sliding member according to the modified example, and (B) is an enlarged plan view of a part of the first sliding member according to the modified example. 変形例に係る第１摺動部材の平面図Top view of the first sliding member according to the modified example 変形例に係る第１摺動部材の平面図Top view of the first sliding member according to the modified example 変形例に係る第１摺動部材の平面図Top view of the first sliding member according to the modified example

（実施の形態１）
以下、本発明の一実施の形態に係る摺動機構を備えた装置（以下、「摺動装置」と称する。）について図面を参照しながら説明する。摺動装置は、図１（Ａ）に示すように、潤滑油で満たされたプール１８と、摺動機構１と、主軸１７と、を備える。なお、以下、適宜図１（Ａ）における＋Ｚ方向を上方向、図１（Ｂ）における−Ｚ方向を下方向として説明する。摺動機構１は、プール１８の底に固定された第１摺動部材１１と、第１摺動部材１１に対向配置された第２摺動部材１２と、を有する。図１（Ｂ）に示すように、第２摺動部材１２は、第１摺動部材１１の第１摺動面１１１と潤滑油を介して対向する平坦な第２摺動面１２１を有する。主軸１７は、図１（Ａ）に示すように、第２摺動部材１２に固定されており、矢印ＡＲ１に示すように、第２摺動部材１２を第１摺動部材１１に向けて押圧する力を加えつつ、矢印ＡＲ２に示すように、第２摺動部材１２を第１摺動部材１１に対して相対的に回転させる。これにより、第１摺動部材１１が静止した状態で、第２摺動部材１２を第１摺動部材１１に対して摺動させる。 (Embodiment 1)
Hereinafter, a device provided with a sliding mechanism according to an embodiment of the present invention (hereinafter, referred to as “sliding device”) will be described with reference to the drawings. As shown in FIG. 1A, the sliding device includes a pool 18 filled with lubricating oil, a sliding mechanism 1, and a spindle 17. Hereinafter, the + Z direction in FIG. 1 (A) will be described as an upward direction, and the −Z direction in FIG. 1 (B) will be described as a downward direction. The sliding mechanism 1 has a first sliding member 11 fixed to the bottom of the pool 18 and a second sliding member 12 arranged to face the first sliding member 11. As shown in FIG. 1 (B), the second sliding member 12 has a flat second sliding surface 121 facing the first sliding surface 111 of the first sliding member 11 via the lubricating oil. The spindle 17 is fixed to the second sliding member 12 as shown in FIG. 1 (A), and the second sliding member 12 is pressed toward the first sliding member 11 as shown by the arrow AR1. As shown by the arrow AR2, the second sliding member 12 is rotated relative to the first sliding member 11. As a result, the second sliding member 12 is slid with respect to the first sliding member 11 in a state where the first sliding member 11 is stationary.

第１摺動部材１１は、図２（Ａ）に示すように、円環状であり、周方向全体に亘って複数の窪み部１１２が形成された第１摺動面１１１を有する。第２摺動部材１２は、矢印ＡＲ２に示すように、上方から見て第１摺動部材１１に対して時計回りに回転して摺動する。窪み部１１２は、図２（Ｂ）に示すように、第１摺動面１１１に平行であり且つ第２摺動部材１２の摺動方向ＡＲ２に直交する方向から見た断面が逆三角形状である。また、窪み部１１２は、平面視において、摺動方向ＡＲ２に沿った中心軸Ｊ１１方向の長さＬ１１＋Ｌ１２と、中心軸Ｊ１１と直交する方向の長さＷ１１と、が異なる異方的な形状を有する。ここで、「摺動方向ＡＲ２に沿った中心軸Ｊ１１」とは、摺動方向ＡＲ２に平行な中心軸Ｊ１１を意味する。また、窪み部１１２は、中心軸Ｊ１１に沿った第１摺動面１１１に直交する断面の形状と、中心軸Ｊ１１と直交する方向に沿った第１摺動面１１１に直交する断面の形状とが異なっている。そして、窪み部１１２は、中心軸Ｊ１１に平行な一方向に向かって深さが増加する形で傾斜した第１傾斜面１１２ａと、上記一方向に向かって深さが減少する形で傾斜した第２傾斜面１１２ｂと、を有する。第１傾斜面１１２ａの第１摺動面１１１に対する傾斜角θ１１は、４５度よりも小さく、第２傾斜面１１２ｂの第１摺動面１１１に対する傾斜角θ１２よりも小さく設定されている。そして、Ｚ軸方向および第２摺動部材１２の摺動方向ＡＲ２に直交する方向から見て、第１傾斜面１１２ａと第２傾斜面１１２ｂとのなす角度は９０度に設定されている。これにより、平面視において、第１傾斜面１１２ａの摺動方向ＡＲ２の長さＬ１１が、第２傾斜面１１２ｂの摺動方向ＡＲ２の長さＬ１２よりも長くなっている。また、第２傾斜面１１２ｂは、第１傾斜面１１２ａと第２傾斜面１１２ｂの境界部分から離れるにつれて第２摺動部材１２の摺動方向ＡＲ２に直交する方向の幅が狭くなる先細りの形状である。 As shown in FIG. 2A, the first sliding member 11 has an annular shape and has a first sliding surface 111 in which a plurality of recesses 112 are formed over the entire circumferential direction. As shown by the arrow AR2, the second sliding member 12 rotates clockwise with respect to the first sliding member 11 and slides. As shown in FIG. 2B, the recessed portion 112 has an inverted triangular cross section when viewed from a direction parallel to the first sliding surface 111 and orthogonal to the sliding direction AR2 of the second sliding member 12. be. Further, the recessed portion 112 has an anisotropic shape in which the length L11 + L12 in the central axis J11 direction along the sliding direction AR2 and the length W11 in the direction orthogonal to the central axis J11 are different in a plan view. .. Here, the "central axis J11 along the sliding direction AR2" means the central axis J11 parallel to the sliding direction AR2. Further, the recessed portion 112 has a cross-sectional shape orthogonal to the first sliding surface 111 along the central axis J11 and a cross-sectional shape orthogonal to the first sliding surface 111 along the direction orthogonal to the central axis J11. Is different. The recessed portion 112 has a first inclined surface 112a that is inclined so that the depth increases in one direction parallel to the central axis J11, and a first inclined surface 112a that is inclined so that the depth decreases toward the one direction. It has two inclined surfaces 112b. The inclination angle θ11 of the first inclined surface 112a with respect to the first sliding surface 111 is set to be smaller than 45 degrees and smaller than the inclination angle θ12 of the second inclined surface 112b with respect to the first sliding surface 111. The angle between the first inclined surface 112a and the second inclined surface 112b is set to 90 degrees when viewed from the Z-axis direction and the direction orthogonal to the sliding direction AR2 of the second sliding member 12. As a result, in a plan view, the length L11 of the sliding direction AR2 of the first inclined surface 112a is longer than the length L12 of the sliding direction AR2 of the second inclined surface 112b. Further, the second inclined surface 112b has a tapered shape in which the width in the direction orthogonal to the sliding direction AR2 of the second sliding member 12 becomes narrower as the distance from the boundary portion between the first inclined surface 112a and the second inclined surface 112b increases. be.

第１摺動部材１１と第２摺動部材１２との間に潤滑油が介在した状態で、第２摺動部材１２が第１摺動部材１１に対して摺動すると、第１摺動部材１１と第２摺動部材１２との間に介在する潤滑油は、第２摺動部材１２と同じ方向へ流れる。そして、矢印ＡＲ２１に示すように第１摺動部材１１の第１傾斜面１１２ａに沿って窪み部１１２内へ流入した潤滑油は、矢印ＡＲ２２に示すように第２傾斜面１１２ｂに当たって第２傾斜面１１２ｂに沿って第２摺動部材１２へ近づく方向へ流れる。前述のように第１傾斜面１１２ａと第２傾斜面１１２ｂとのなす角度が９０度に設定されていることにより、第１傾斜面１１２ａに沿って窪み部１１２に流入した潤滑油が、第１傾斜面１１２ａの法線方向へ流れる。この窪み部１１２から第２摺動部材１２へ近づく方向への潤滑油の流れによって、第２摺動部材１２には、第１摺動部材１１から離れる方向、即ち、上方へ押し上げられる方向へ力が加わる。 When the second sliding member 12 slides with respect to the first sliding member 11 with the lubricating oil interposed between the first sliding member 11 and the second sliding member 12, the first sliding member The lubricating oil interposed between the 11 and the second sliding member 12 flows in the same direction as the second sliding member 12. Then, as shown by the arrow AR21, the lubricating oil that has flowed into the recessed portion 112 along the first inclined surface 112a of the first sliding member 11 hits the second inclined surface 112b and hits the second inclined surface 112b as shown by the arrow AR22. It flows in a direction approaching the second sliding member 12 along 112b. As described above, the angle formed by the first inclined surface 112a and the second inclined surface 112b is set to 90 degrees, so that the lubricating oil that has flowed into the recessed portion 112 along the first inclined surface 112a is the first. It flows in the normal direction of the inclined surface 112a. Due to the flow of the lubricating oil from the recess 112 toward the second sliding member 12, the second sliding member 12 is forced to move away from the first sliding member 11, that is, in a direction of being pushed upward. Is added.

また、複数の窪み部１１２は、それぞれ、第１傾斜面１１２ａの中心軸Ｊ１１が最も深くなるように湾曲している。これにより、窪み部１１２の周囲に存在する潤滑油が、窪み部１１２へ効率良く流入するので、窪み部１１２から第２摺動部材１２へ近づく方向への潤滑油の流れが生じ易くなる。更に、窪み部１１２の第２傾斜面１１２ｂは、第１傾斜面１１２ａと第２傾斜面１１２ｂの境界部分から離れるにつれて第２摺動部材１２の摺動方向ＡＲ２に直交する方向の幅が狭くなる先細りの形状である。これにより、第２摺動部材１２を第１摺動部材１１に対して矢印ＡＲ２に示す方向へ摺動させたときにおいて、第１傾斜面１１２ａの法線方向へ流れる潤滑油の量が増加するので、第２摺動部材１２を上方へ押し上げる方向への力が増加する。 Further, each of the plurality of recesses 112 is curved so that the central axis J11 of the first inclined surface 112a is the deepest. As a result, the lubricating oil existing around the recessed portion 112 efficiently flows into the recessed portion 112, so that the lubricating oil tends to flow in the direction approaching the second sliding member 12 from the recessed portion 112. Further, the width of the second inclined surface 112b of the recessed portion 112 in the direction orthogonal to the sliding direction AR2 of the second sliding member 12 becomes narrower as the distance from the boundary portion between the first inclined surface 112a and the second inclined surface 112b increases. It has a tapered shape. As a result, when the second sliding member 12 is slid with respect to the first sliding member 11 in the direction indicated by the arrow AR2, the amount of lubricating oil flowing in the normal direction of the first inclined surface 112a increases. Therefore, the force in the direction of pushing up the second sliding member 12 increases.

次に、本実施の形態に係る第１摺動部材１１の製造方法について図３（Ａ）および（Ｂ）を参照しながら説明する。なお、図３（Ａ）および（Ｂ）において、基材９０１１の主面９１１１に直交する一方向をＺ方向、Ｚ方向に対して工具９１の中心軸が傾く方向をＰ方向、Ｐ方向とＺ方向とに直交する一方向をＱ方向として説明する。Ｐ方向は、図１（Ａ）における摺動方向ＡＲ２に対応し、Ｑ方向は、図１（Ａ）における摺動方向ＡＲ２に直交する方向に対応する。まず、第１摺動部材１１の基となる基材９０１１を準備する準備工程を行う。基材９０１１は、例えば金属から形成された円環状の板材である。 Next, a method of manufacturing the first sliding member 11 according to the present embodiment will be described with reference to FIGS. 3A and 3B. In FIGS. 3A and 3B, one direction orthogonal to the main surface 9111 of the base material 9011 is the Z direction, and the direction in which the central axis of the tool 91 is tilted with respect to the Z direction is the P direction, the P direction and Z. One direction orthogonal to the direction will be described as the Q direction. The P direction corresponds to the sliding direction AR2 in FIG. 1 (A), and the Q direction corresponds to the direction orthogonal to the sliding direction AR2 in FIG. 1 (A). First, a preparatory step for preparing the base material 9011 which is the base of the first sliding member 11 is performed. The base material 9011 is, for example, an annular plate material formed of metal.

次に、基材９０１１の主面９１１１に複数の窪み部１１２を形成する窪み部形成工程を行うことにより、第１摺動部材１１が生成される。窪み部形成工程では、例えば刃先が９０度の円筒状のスクエアエンドミルまたは砥石である工具９１を使用する。工具９１は、工作機械のスピンドルモータ（図示せず）に連結され、その筒軸Ｊ９１周りに回転する。工具９１の先端部は、側方から見て矩形状であり角部の角度が９０度である。そして、工具９１を回転させながら、工具９１を基材９０１１の主面９１１１に押し当てて切削または研削することにより、基材９０１１の主面９１１１に窪み部１１２を形成する。このとき、工具９１の筒軸Ｊ９１が傾くＰ方向を、第１摺動部材１１に対して第２摺動部材１２が摺動する方向、即ち、基材９０１１の周方向に沿った方向に設定する。そして、工具９１の筒軸Ｊ９１を、基材９０１１の主面９１１１に対して４５度よりも小さい角度θ１１だけ傾斜させる。 Next, the first sliding member 11 is generated by performing a recessed portion forming step of forming a plurality of recessed portions 112 on the main surface 9111 of the base material 9011. In the recess forming step, for example, a cylindrical square end mill having a cutting edge of 90 degrees or a tool 91 which is a grindstone is used. The tool 91 is connected to a spindle motor (not shown) of the machine tool and rotates around the cylinder shaft J91. The tip of the tool 91 is rectangular when viewed from the side, and the angle of the corner is 90 degrees. Then, while rotating the tool 91, the tool 91 is pressed against the main surface 9111 of the base material 9011 to be cut or ground to form a recessed portion 112 on the main surface 9111 of the base material 9011. At this time, the P direction in which the cylinder shaft J91 of the tool 91 is tilted is set to the direction in which the second sliding member 12 slides with respect to the first sliding member 11, that is, the direction along the circumferential direction of the base material 9011. do. Then, the cylinder shaft J91 of the tool 91 is tilted with respect to the main surface 9111 of the base material 9011 by an angle θ11 smaller than 45 degrees.

このようにして形成された窪み部１１２は、そのＺ軸方向および摺動方向ＡＲ２に直交する方向から見た断面が左右非対称となる。また、窪み部１１２の第１傾斜面１１２ａは、Ｑ軸方向における中央部が最も深くなるように湾曲したものとなる。更に、図３（Ｂ）に示すように、窪み部１１２の第２傾斜面１１２ｂは、第１傾斜面１１２ａと第２傾斜面１１２ｂの境界部分から離れるにつれてＱ軸方向の幅が小さくなる先細り形状となる。また、窪み部１１２のＱ軸方向の幅は、窪み部１１２の最深部の深さと工具９１の直径とにより決定することができる。ここにおいて、窪み部１１２の幅の精度を重要視する場合、工具９１としてツルーイングしやすい砥石を使用するのが好ましい。また、工具９１として、窪み部１１２における最も幅が広い部分の幅よりも小径の工具を用いることによりならい加工を行うことにより、窪み部の形状のバリエーションを増やすこともできる。 The recessed portion 112 formed in this way has a left-right asymmetric cross section when viewed from the direction orthogonal to the Z-axis direction and the sliding direction AR2. Further, the first inclined surface 112a of the recessed portion 112 is curved so that the central portion in the Q-axis direction is the deepest. Further, as shown in FIG. 3B, the second inclined surface 112b of the recessed portion 112 has a tapered shape in which the width in the Q-axis direction decreases as the distance from the boundary portion between the first inclined surface 112a and the second inclined surface 112b increases. It becomes. Further, the width of the recessed portion 112 in the Q-axis direction can be determined by the depth of the deepest portion of the recessed portion 112 and the diameter of the tool 91. Here, when the accuracy of the width of the recessed portion 112 is important, it is preferable to use a grindstone that is easy to true as the tool 91. Further, by using a tool having a diameter smaller than the width of the widest portion of the recessed portion 112 as the tool 91, it is possible to increase the variation in the shape of the recessed portion.

ところで、前述の窪み部生成工程において、例えばローラを基材９０１１に押し当てて基材９０１１の主面９１１１を塑性加工する場合、窪み部１１２の周囲が盛り上がってしまう。従って、基材９０１１の主面９１１１に窪み部１１２を形成した後、窪み部１１２の周囲の***部分を平坦化するための表面研磨処理が必要となる。これに対して、本実施の形態に係る窪み部生成工程のように、基材９０１１の主面９１１１を切削または研削して基材９０１１の窪み部１１２に対応する部分を除去する方法を採用することにより、窪み部１１２生成後の表面研磨処理が不要となる。従って、製造工程の簡素化を図ることができるという利点がある。 By the way, in the above-mentioned recessed portion generation step, for example, when a roller is pressed against the base material 9011 to plastically process the main surface 9111 of the base material 9011, the periphery of the recessed portion 112 rises. Therefore, after forming the recessed portion 112 on the main surface 9111 of the base material 9011, a surface polishing treatment for flattening the raised portion around the recessed portion 112 is required. On the other hand, as in the recessed portion generation step according to the present embodiment, a method of cutting or grinding the main surface 9111 of the base material 9011 to remove the portion corresponding to the recessed portion 112 of the base material 9011 is adopted. This eliminates the need for surface polishing after the recess 112 is formed. Therefore, there is an advantage that the manufacturing process can be simplified.

また、前述の窪み部生成工程において、前述のように塑性加工を行う場合、基材９０１１がいわゆる硬脆材料であるとクラックなどの欠陥が入り易い。これに対して、本実施の形態に係る窪み部形成工程のように切削加工または研削加工を採用することにより、基材９０１１がいわゆる硬脆材料であっても欠陥の発生が抑制される。 Further, in the above-mentioned recessed portion forming step, when plastic working is performed as described above, if the base material 9011 is a so-called hard and brittle material, defects such as cracks are likely to occur. On the other hand, by adopting cutting or grinding as in the recess forming step according to the present embodiment, the generation of defects is suppressed even if the base material 9011 is a so-called hard and brittle material.

以上説明したように、本実施の形態に係る摺動機構１によれば、第１摺動部材１１の第１摺動面１１１に形成された複数の窪み部１１２が、それぞれ、平面視において異方的な形状であり、摺動方向ＡＲ２に向かって深さが増加する形で傾斜した第１傾斜面１１２ａと、摺動方向ＡＲ２に向かって深さが減少する形で傾斜した第２傾斜面１１２ｂと、を有する。これにより、窪み部１１２の平面視形状に応じて第１摺動部材１１と第２摺動部材１２との間に介在する潤滑油の窪み部１１２内への流入が促進される。そして、第１傾斜面１１２ａに沿って窪み部１１２内へ流入した潤滑油は、摺動方向ＡＲ２へ流れて第２傾斜面１１２ｂに当たって第２傾斜面１１２ｂに沿って第２摺動部材１２へ近づく方向へ流れる。そして、この第２摺動部材１２へ近づく方向への潤滑油の流れにより、潤滑油から第２摺動部材１２に第１摺動部材１１から離れる方向、即ち、上方への十分な動圧を得ることができる。従って、第１摺動部材１１と第２摺動部材１２との接触が抑制されるので、第１摺動部材１１と第２摺動部材１２との摩擦によるエネルギ損失または第１摺動部材１１または第２摺動部材１２の摩耗が低減される。 As described above, according to the sliding mechanism 1 according to the present embodiment, the plurality of recesses 112 formed on the first sliding surface 111 of the first sliding member 11 are different in plan view. A first inclined surface 112a that has an anisotropic shape and is inclined so that the depth increases toward the sliding direction AR2, and a second inclined surface that is inclined so that the depth decreases toward the sliding direction AR2. 112b and. As a result, the inflow of the lubricating oil interposed between the first sliding member 11 and the second sliding member 12 into the recessed portion 112 is promoted according to the plan view shape of the recessed portion 112. Then, the lubricating oil that has flowed into the recessed portion 112 along the first inclined surface 112a flows in the sliding direction AR2, hits the second inclined surface 112b, and approaches the second sliding member 12 along the second inclined surface 112b. Flow in the direction. Then, due to the flow of the lubricating oil in the direction approaching the second sliding member 12, a sufficient dynamic pressure is applied to the second sliding member 12 from the lubricating oil in the direction away from the first sliding member 11, that is, upward. Obtainable. Therefore, since the contact between the first sliding member 11 and the second sliding member 12 is suppressed, energy loss due to friction between the first sliding member 11 and the second sliding member 12 or the first sliding member 11 Alternatively, the wear of the second sliding member 12 is reduced.

また、本実施の形態に係る窪み部１１２は、第１傾斜面１１２ａの第１摺動面１１１に対する傾斜角θ１１が、第２傾斜面１１２ｂの第１摺動面１１１に対する傾斜角θ１２よりも小さい。これにより、第２摺動部材１２を第１摺動部材１１に対して矢印ＡＲ２に示す方向へ摺動させたときにおいて、潤滑油が第２摺動部材１２へ近づく方向へ効率良く流れる。従って、第２摺動部材１２を上方へ押し上げる方向への圧力を高めることができる。 Further, in the recessed portion 112 according to the present embodiment, the inclination angle θ11 of the first inclined surface 112a with respect to the first sliding surface 111 is smaller than the inclination angle θ12 of the second inclined surface 112b with respect to the first sliding surface 111. .. As a result, when the second sliding member 12 is slid with respect to the first sliding member 11 in the direction indicated by the arrow AR2, the lubricating oil efficiently flows in the direction approaching the second sliding member 12. Therefore, the pressure in the direction of pushing up the second sliding member 12 can be increased.

更に、本実施の形態に係る窪み部１１２の第２傾斜面１１２ｂは、第１傾斜面１１２ａと第２傾斜面１１２ｂの境界部分から離れるにつれて第２摺動部材１２の摺動方向ＡＲ２に直交する方向の幅が狭くなる先細りの形状である。これにより、第２摺動部材１２を第１摺動部材１１に対して矢印ＡＲ２に示す方向へ摺動させたときにおいて、第１傾斜面１１２ａの法線方向、即ち、第２摺動部材１２へ近づく方向へ流れる潤滑油の量が増加するので、第２摺動部材１２を上方へ押し上げる方向への圧力を高めることができる。 Further, the second inclined surface 112b of the recessed portion 112 according to the present embodiment is orthogonal to the sliding direction AR2 of the second sliding member 12 as the distance from the boundary portion between the first inclined surface 112a and the second inclined surface 112b increases. It is a tapered shape with a narrower width in the direction. As a result, when the second sliding member 12 is slid with respect to the first sliding member 11 in the direction indicated by the arrow AR2, the normal direction of the first inclined surface 112a, that is, the second sliding member 12 Since the amount of the lubricating oil flowing in the direction approaching is increased, the pressure in the direction of pushing the second sliding member 12 upward can be increased.

なお、前述では、第１摺動部材１１が静止しており、第２摺動部材１２が第１摺動部材１１に対して摺動方向ＡＲ２へ摺動する例について説明したが、第２摺動部材１２が静止しており、第１摺動部材１１が第２摺動部材１２に対して摺動するものであってもよい。この場合、第１摺動部材１１が第２摺動部材１２に対して、矢印ＡＲ２で示す方向とは逆回りの方向へ摺動するとき、第２摺動部材１２が第１摺動部材１１に対して相対的に矢印ＡＲ２の方向へ摺動するものと解釈する。 In the above description, an example in which the first sliding member 11 is stationary and the second sliding member 12 slides in the sliding direction AR2 with respect to the first sliding member 11 has been described. The moving member 12 may be stationary and the first sliding member 11 may slide with respect to the second sliding member 12. In this case, when the first sliding member 11 slides with respect to the second sliding member 12 in the direction opposite to the direction indicated by the arrow AR2, the second sliding member 12 is the first sliding member 11. It is interpreted that it slides in the direction of the arrow AR2 relative to the arrow AR2.

（実施の形態２）
本実施の形態に係る圧縮機は、ロータリ圧縮機であり、ベーンがシリンダに設けられたベーン溝内を摺動する。ベーンの表面には実施の形態１で説明した形状と同様の形状を有する窪み部が複数設けられている。これにより、ベーンがベーン溝内を鉛直下方向へ摺動する際のベーンの外壁とベーン溝の内壁との間での摺動抵抗が低減されているものである。 (Embodiment 2)
The compressor according to the present embodiment is a rotary compressor, and the vane slides in the vane groove provided in the cylinder. The surface of the vane is provided with a plurality of recesses having the same shape as that described in the first embodiment. As a result, the sliding resistance between the outer wall of the vane and the inner wall of the vane groove when the vane slides vertically downward in the vane groove is reduced.

図４（Ａ）に示すように、本実施の形態に係る圧縮機６００１は、ベーン６０５１と、ピストン６０５２と、シリンダ６０５３と、を備える。圧縮機６００１は、図４（Ａ）におけるＹ軸方向が鉛直方向となる姿勢で使用される。シリンダ６０５３は、圧縮室Ｒ２と、鉛直方向に延長され下端で圧縮室Ｒ２に連通し内側にベーン６０５１が配置されるベーン溝６０５４と、を有する。また、シリンダ６０５３は、図４（Ａ）におけるベーン溝６０５４よりも右側に位置し圧縮室Ｒ２に連通する吸気孔６０５５と、図４（Ａ）におけるベーン溝６０５４よりも左側に位置し圧縮室Ｒ２に連通する排気孔６０５６と、を有する。 As shown in FIG. 4A, the compressor 6001 according to the present embodiment includes a vane 6051, a piston 6052, and a cylinder 6053. The compressor 6001 is used in a posture in which the Y-axis direction in FIG. 4A is the vertical direction. The cylinder 6053 has a compression chamber R2 and a vane groove 6054 that extends in the vertical direction and communicates with the compression chamber R2 at the lower end and the vane 6051 is arranged inside. Further, the cylinder 6053 is located on the right side of the vane groove 6054 in FIG. 4A and communicates with the compression chamber R2, and is located on the left side of the vane groove 6054 in FIG. 4A and is located on the left side of the compression chamber R2. It has an exhaust hole 6056 and a communication with the exhaust hole 6056.

ピストン６０５２は、圧縮室Ｒ２内に配置され、矢印ＡＲ６１に示すように回転軸Ｊ６１周りに偏心回転する。このとき、ピストン６０５２の周壁は、シリンダ６０５３の圧縮室Ｒ２の内壁に対して摺動する。 The piston 6052 is arranged in the compression chamber R2 and rotates eccentrically around the rotation axis J61 as shown by the arrow AR61. At this time, the peripheral wall of the piston 6052 slides with respect to the inner wall of the compression chamber R2 of the cylinder 6053.

ベーン６０５１は、ベーン溝６０５４の内側に配置された状態で、圧縮室Ｒ２内における吸気口６０５５に連通する領域と排気口６０５６に連通する領域とを隔てる隔壁として機能する。ベーン６０５１は、下端部がピストン６０５２の周壁に当接した状態でピストン６０５２の偏心回転に伴って矢印ＡＲ６２に示すようにベーン溝６０５４内を上下に摺動する。ここで、ベーン６０５１の第１摺動面６５１１が、ベーン溝６０５４の第２摺動面６５４１に対向している。ここにおいて、ピストン６０５２の中心軸Ｊ６２が回転軸Ｊ６１の下側に位置する状態から中心軸Ｊ６２が回転軸Ｊ６１の上側に位置する状態へピストン６０５２が回転軸Ｊ６１周りに回転するのに伴って、ベーン６０５１は、ピストン６０５２により鉛直上方へ押し上げられる。一方、ピストン６０５２の中心軸Ｊ６２が回転軸Ｊ６１の上側に位置する状態から中心軸Ｊ６２が回転軸Ｊ６１の上側に位置する状態へピストン６０５２が回転軸Ｊ６１周りに回転するのに伴って、ベーン６０５１は、背面にあるバネ（図示せず）によりベーン溝６０５４内を鉛直下方へ移動する。 The vane 6051, in a state of being arranged inside the vane groove 6054, functions as a partition wall in the compression chamber R2 that separates the region communicating with the intake port 6055 and the region communicating with the exhaust port 6056. The vane 6051 slides up and down in the vane groove 6054 as shown by the arrow AR62 with the eccentric rotation of the piston 6052 in a state where the lower end thereof is in contact with the peripheral wall of the piston 6052. Here, the first sliding surface 6511 of the vane 6051 faces the second sliding surface 6541 of the vane groove 6054. Here, as the piston 6052 rotates around the rotary shaft J61 from the state where the central shaft J62 of the piston 6052 is located below the rotary shaft J61 to the state where the central shaft J62 is located above the rotary shaft J61, The vane 6051 is pushed vertically upward by the piston 6052. On the other hand, as the piston 6052 rotates around the rotating shaft J61 from the state where the central axis J62 of the piston 6052 is located above the rotating shaft J61 to the state where the central axis J62 is located above the rotating shaft J61, the vane 6051 Moves vertically downward in the vane groove 6054 by a spring (not shown) on the back surface.

ベーン６０５１の両面の第１摺動面６５１１には、図４（Ｂ）に示すように、ベーン６０５１の摺動方向に並んだ複数の窪み部６１１２が形成されている。ベーン６０５１が下方へ移動するとき、ベーン溝６０５４の内壁がベーン６０５１に対して相対的に上方へ摺動する。図４（Ｂ）の矢印ＡＲ６３は、ベーン溝６０５４の内壁がベーン６０５１に対して相対的に摺動する摺動方向を示す。窪み部６１１２は、平面視において、摺動方向ＡＲ６３に沿った中心軸Ｊ６３方向の長さＬ６１＋Ｌ６２と、中心軸Ｊ６３と直交する方向の長さＷ６１と、が異なる異方的な形状を有する。そして、窪み部６１１２の中心軸Ｊ６３は、摺動方向ＡＲ６３に平行である。窪み部６１１２は、第１傾斜面１１２ａと第２傾斜面１１２ｂとを有する。第１傾斜面１１２ａは、ベーン６０５１が鉛直下方向へ摺動するときにベーン６０５１から見てベーン溝６０５４が相対的に摺動する摺動方向ＡＲ６３に向かって深さが増加する形で傾斜している。第２傾斜面１１２ｂは、ベーン６０５１が鉛直下方向へ摺動するときにベーン６０５１から見てベーン溝６０５４が相対的に摺動する摺動方向ＡＲ６３に向かって深さが減少する形で傾斜している。また、平面視において、第１傾斜面１１２ａの中心軸Ｊ６３方向の長さＬ６１が、第２傾斜面１１２ｂの中心軸Ｊ６３方向の長さＬ６２よりも長くなっている。これにより、ベーン６０５１がベーン溝６０５４内を下降するときのベーン６０５１の第１摺動面６５１１とベーン溝６０５４の第２摺動面６５４１との間に生じる摺動抵抗が低減されている。 As shown in FIG. 4B, a plurality of recesses 6112 arranged in the sliding direction of the vane 6051 are formed on the first sliding surfaces 6511 on both sides of the vane 6051. When the vane 6051 moves downward, the inner wall of the vane groove 6054 slides upward relative to the vane 6051. The arrow AR63 in FIG. 4B indicates a sliding direction in which the inner wall of the vane groove 6054 slides relative to the vane 6051. The recessed portion 6112 has an anisotropic shape in which the length L61 + L62 in the direction of the central axis J63 along the sliding direction AR63 and the length W61 in the direction orthogonal to the central axis J63 are different in a plan view. The central axis J63 of the recessed portion 6112 is parallel to the sliding direction AR63. The recessed portion 6112 has a first inclined surface 112a and a second inclined surface 112b. The first inclined surface 112a is inclined so that the depth increases toward the sliding direction AR63 in which the vane groove 6054 relatively slides when viewed from the vane 6051 when the vane 6051 slides in the vertical downward direction. ing. The second inclined surface 112b is inclined so that the depth decreases toward the sliding direction AR63 in which the vane groove 6054 relatively slides when viewed from the vane 6051 when the vane 6051 slides in the vertical downward direction. ing. Further, in a plan view, the length L61 of the first inclined surface 112a in the central axis J63 direction is longer than the length L62 of the second inclined surface 112b in the central axis J63 direction. As a result, the sliding resistance generated between the first sliding surface 6511 of the vane 6051 and the second sliding surface 6541 of the vane groove 6054 when the vane 6051 descends in the vane groove 6054 is reduced.

ところで、第１摺動面６５１１と第２摺動面６５４１との間に生じる摺動抵抗が大きくなると、ベーン６０５１が鉛直下方へ移動する際の移動速度が低下してしまい、ベーン６０５１の移動がピストン６０５２の偏心回転に追従できず、ベーン６０５１の下端部とピストン６０５２の周壁との間に空隙が発生してしまう虞がある。この場合、圧縮室Ｒ２における吸気口６０５５に連通する領域と排気口６０５６に連通する領域とが繋がってしまうため、圧縮機６００１の圧縮効率が低下してしまう。 By the way, if the sliding resistance generated between the first sliding surface 6511 and the second sliding surface 6541 becomes large, the moving speed when the vane 6051 moves vertically downward decreases, and the vane 6051 moves. It cannot follow the eccentric rotation of the piston 6052, and there is a possibility that a gap may be generated between the lower end of the vane 6051 and the peripheral wall of the piston 6052. In this case, since the region communicating with the intake port 6055 and the region communicating with the exhaust port 6056 in the compression chamber R2 are connected, the compression efficiency of the compressor 6001 is lowered.

これに対して、本実施の形態に係る圧縮機６００１では、ベーン６０５１の第１摺動面６５１１に、前述のような第１傾斜面１１２ａと第２傾斜面１１２ｂとを有する複数の窪み部６１１２が形成されている。これにより、ベーン６０５１が下方へ移動する際のベーン６０５１の第１摺動面６５１１とベーン溝６０５４の第２摺動面６５４１との間に生じる摺動抵抗が低減されるので、ベーン６０５１が鉛直下方へ移動する際の移動速度が向上する。従って、ベーン６０５１の下端部とピストン６０５２の周壁との間に空隙が生じることを抑制できるので、圧縮機６００１の圧縮効率が改善される。 On the other hand, in the compressor 6001 according to the present embodiment, the first sliding surface 6511 of the vane 6051 has a plurality of recessed portions 6112 having the first inclined surface 112a and the second inclined surface 112b as described above. Is formed. As a result, the sliding resistance generated between the first sliding surface 6511 of the vane 6051 and the second sliding surface 6541 of the vane groove 6054 when the vane 6051 moves downward is reduced, so that the vane 6051 is vertical. The movement speed when moving downward is improved. Therefore, it is possible to suppress the formation of a gap between the lower end portion of the vane 6051 and the peripheral wall of the piston 6052, so that the compression efficiency of the compressor 6001 is improved.

また、現在、地球環境に対する意識の高まりから、空気調和機として環境負荷が小さいものが選択される傾向となっている。空気調和機においては、特に、圧縮機の性能が環境負荷に与える影響が大きく、圧縮機の効率改善が環境負荷の低減が必須となっている。これに対して、本実施の形態に係る圧縮機６００１では、前述のように、ベーン６０５１の第１摺動面６５１１とベーン溝６０５４の第２摺動面６５４１との間に生じる摺動抵抗を低減することによりその圧縮効率が改善される。従って、本実施の形態に係る圧縮機６００１を空気調和機に用いることにより、環境負荷の低減を図ることができる。 In addition, due to the growing awareness of the global environment, there is a tendency to select air conditioners with a small environmental load. In air conditioners, the performance of the compressor has a large effect on the environmental load, and it is essential to improve the efficiency of the compressor to reduce the environmental load. On the other hand, in the compressor 6001 according to the present embodiment, as described above, the sliding resistance generated between the first sliding surface 6511 of the vane 6051 and the second sliding surface 6541 of the vane groove 6054 is generated. By reducing it, the compression efficiency is improved. Therefore, by using the compressor 6001 according to the present embodiment as an air conditioner, it is possible to reduce the environmental load.

（変形例）
以上、本発明の実施の形態について説明したが、本発明は前述の実施の形態によって限定されるものではない。例えば、図５（Ａ）および（Ｂ）に示す第１摺動部材２０１１のように、窪み部２１１２について、第１傾斜面２１１２ａの第１摺動面１１１に対する傾斜角θ２１と、第２傾斜面２１１２ｂの第１摺動面１１１に対する傾斜角θ２２と、が同じに設定されている構成であってもよい。窪み部２１１２は、平面視において、摺動方向ＡＲ２に沿った中心軸Ｊ２１方向の長さＬ２１＋Ｌ２２と、中心軸Ｊ２１と直交する方向の長さＷ２１と、が異なる異方的な形状を有する。ここで、「摺動方向ＡＲ２に沿った中心軸Ｊ２１」とは、摺動方向ＡＲ２に平行な中心軸Ｊ２１を意味する。そして、平面視において、第１傾斜面２１１２ａの中心軸Ｊ２１方向の長さＬ２１と第２傾斜面２１１２ｂの中心軸Ｊ２１方向の長さＬ２２とが等しい。図５（Ｂ）に示すように、Ｚ軸方向および第２摺動部材１２の摺動方向ＡＲ２に直交する方向から見て、第１傾斜面２１１２ａと第２傾斜面２１１２ｂとのなす角度は９０度に設定されている。また、第２傾斜面２１１２ｂは、第２摺動部材１２の摺動方向に直交する方向の幅が先細り形状である。これにより、第２摺動部材１２を第１摺動部材２０１１に対して矢印ＡＲ２に示す方向へ摺動させたときにおいて、第１傾斜面２１１２ａの法線方向へ流れる潤滑油の量が増加するので、第２摺動部材１２を上方へ押し上げる方向への圧力が増加する。これにより、第１摺動部材２０１１の摺動面２１１１と第２摺動部材１２の第２摺動面１２１との間に生じる摺動抵抗を低減できる。 (Modification example)
Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments. For example, as in the first sliding member 2011 shown in FIGS. 5A and 5B, the recessed portion 2112 has an inclination angle θ21 with respect to the first sliding surface 111 of the first inclined surface 2112a and a second inclined surface. The inclination angle θ22 with respect to the first sliding surface 111 of 2112b may be set to be the same. The recessed portion 2112 has an anisotropic shape in which the length L21 + L22 in the direction of the central axis J21 along the sliding direction AR2 and the length W21 in the direction orthogonal to the central axis J21 are different in a plan view. Here, the "central axis J21 along the sliding direction AR2" means the central axis J21 parallel to the sliding direction AR2. Then, in a plan view, the length L21 of the first inclined surface 2112a in the central axis J21 direction and the length L22 of the second inclined surface 2112b in the central axis J21 direction are equal. As shown in FIG. 5B, the angle formed by the first inclined surface 2112a and the second inclined surface 2112b is 90 when viewed from the Z-axis direction and the direction orthogonal to the sliding direction AR2 of the second sliding member 12. It is set every time. Further, the width of the second inclined surface 2112b in the direction orthogonal to the sliding direction of the second sliding member 12 is tapered. As a result, when the second sliding member 12 is slid with respect to the first sliding member 2011 in the direction indicated by the arrow AR2, the amount of lubricating oil flowing in the normal direction of the first inclined surface 2112a increases. Therefore, the pressure in the direction of pushing up the second sliding member 12 increases. As a result, the sliding resistance generated between the sliding surface 2111 of the first sliding member 2011 and the second sliding surface 121 of the second sliding member 12 can be reduced.

本変形例に係る第１摺動部材２０１１の製造方法は、実施の形態１で説明した第１摺動部材１１の製造方法と比べて、図６（Ａ）に示すように、窪み部形成工程における工具９１の筒軸Ｊ９２の基材９０１１の主面９１１１に対する傾斜角θ２１が異なる。なお、図６（Ａ）および（Ｂ）において、実施の形態１と同様の構成については図３（Ａ）および（Ｂ）と同一の符号を付している。窪み部形成工程において、工具９１の筒軸Ｊ９２の基材９０１１の主面９１１１に対する角度θ２１は、４５度に設定されている。これにより、窪み部２１１２は、そのＺ軸方向および摺動方向ＡＲ２に直交する方向から見た断面が左右対称となる。また、図６（Ｂ）に示すように、窪み部２１１２の第２傾斜面２１１２ｂは、楕円形状、即ち、第１傾斜面２１１２ａと第２傾斜面２１１２ｂの境界部分から離れるにつれてＱ軸方向の幅が小さくなる先細り形状となっている。また、窪み部２１１２の第１傾斜面２１１２ａも、第１傾斜面２１１２ａと第２傾斜面２１１２ｂの境界部分から離れるにつれてＱ軸方向の幅が小さくなる先細り形状となっている。 As shown in FIG. 6A, the manufacturing method of the first sliding member 2011 according to the present modification is a recessed portion forming step as compared with the manufacturing method of the first sliding member 11 described in the first embodiment. The inclination angle θ21 of the cylinder shaft J92 of the tool 91 with respect to the main surface 9111 of the base material 9011 is different. In FIGS. 6A and 6B, the same components as those in the first embodiment are designated by the same reference numerals as those in FIGS. 3A and 3B. In the recess forming step, the angle θ21 of the tubular shaft J92 of the tool 91 with respect to the main surface 9111 of the base material 9011 is set to 45 degrees. As a result, the cross section of the recessed portion 2112 is symmetrical when viewed from the Z-axis direction and the direction orthogonal to the sliding direction AR2. Further, as shown in FIG. 6B, the second inclined surface 2112b of the recessed portion 2112 has an elliptical shape, that is, the width in the Q-axis direction as the distance from the boundary portion between the first inclined surface 2112a and the second inclined surface 2112b increases. It has a tapered shape that makes it smaller. Further, the first inclined surface 2112a of the recessed portion 2112 also has a tapered shape in which the width in the Q-axis direction decreases as the distance from the boundary portion between the first inclined surface 2112a and the second inclined surface 2112b increases.

本構成によれば、第１摺動部材２０１１に対して第２摺動部材１２を矢印ＡＲ２に示す方向へ摺動させる場合と、矢印ＡＲ２とは反対方向へ摺動させる場合との両方において、同様に第１摺動面２１１１と第２摺動面１２１との間に生じる摺動抵抗が低減される。 According to this configuration, in both the case where the second sliding member 12 is slid with respect to the first sliding member 2011 in the direction indicated by the arrow AR2 and the case where the second sliding member 12 is slid in the direction opposite to the arrow AR2. Similarly, the sliding resistance generated between the first sliding surface 2111 and the second sliding surface 121 is reduced.

実施の形態１では、窪み部１１２の中心軸Ｊ１１が第１摺動部材１１に対する第２摺動部材の摺動方向ＡＲ２と平行である構成について説明したが、窪み部の形状はこれに限定されない。例えば図７に示す第１摺動部材３０１１のように、各窪み部３１１２の中心軸Ｊ３１、Ｊ３１が第２摺動部材の摺動方向ＡＲ２に対して傾斜している構成であってもよい。窪み部３１１２は、平面視において、摺動方向ＡＲ２に沿った中心軸Ｊ３１（Ｊ３２）方向の長さＬ３１＋Ｌ３２と、中心軸Ｊ３１（Ｊ３２）と直交する方向の長さＷ３１と、が異なる異方的な形状を有する。ここで、「摺動方向ＡＲ２に沿った中心軸Ｊ３１（Ｊ３２）」とは、摺動方向ＡＲ２に対して傾斜した中心軸Ｊ３１（Ｊ３２）を意味する。そして、平面視において、第１傾斜面３１１２ａの中心軸Ｊ３１（Ｊ３２）方向の長さＬ３１は、第２傾斜面３１１２ｂの中心軸Ｊ３１（Ｊ３２）方向の長さＬ３２に比べて長い。窪み部３１１２の中心軸の第２摺動部材の摺動方向ＡＲ２に対する傾斜角θ３は、例えば５度乃至２０度に設定される。第１摺動部材３０１１の径方向で隣接する２つの窪み部３１１２の中心軸Ｊ３１、Ｊ３２は互いに交差している。つまり、複数の窪み部３１１２は、摺動方向ＡＲ２に対していわゆるヘリングボーン型に配置されている。 In the first embodiment, the configuration in which the central axis J11 of the recessed portion 112 is parallel to the sliding direction AR2 of the second sliding member with respect to the first sliding member 11 has been described, but the shape of the recessed portion is not limited to this. .. For example, as in the first sliding member 3011 shown in FIG. 7, the central axes J31 and J31 of each recessed portion 3112 may be inclined with respect to the sliding direction AR2 of the second sliding member. The recessed portion 3112 is anisotropic in that the length L31 + L32 in the central axis J31 (J32) direction along the sliding direction AR2 and the length W31 in the direction orthogonal to the central axis J31 (J32) are different in a plan view. Has a unique shape. Here, the "central axis J31 (J32) along the sliding direction AR2" means the central axis J31 (J32) inclined with respect to the sliding direction AR2. Then, in a plan view, the length L31 of the first inclined surface 3112a in the central axis J31 (J32) direction is longer than the length L32 of the second inclined surface 3112b in the central axis J31 (J32) direction. The inclination angle θ3 with respect to the sliding direction AR2 of the second sliding member of the central axis of the recessed portion 3112 is set to, for example, 5 degrees to 20 degrees. The central axes J31 and J32 of the two recesses 3112 adjacent to each other in the radial direction of the first sliding member 3011 intersect with each other. That is, the plurality of recessed portions 3112 are arranged in a so-called herringbone type with respect to the sliding direction AR2.

本構成によれば、第１摺動部材３０１１に対して第２摺動部材を矢印ＡＲ２方向へ摺動させた場合、第１摺動部材３０１１の径方向で隣り合う窪み部３１１２からの第２傾斜面３１１２ｂに沿った潤滑油の流れが衝突する。これにより、第２摺動部材に加わる第１摺動部材３０１１から離れる方向への圧力が増加するので、第１摺動部材３０１１および第２摺動部材の摩擦損失や摩耗を更に低減できる。 According to this configuration, when the second sliding member is slid with respect to the first sliding member 3011 in the direction of arrow AR2, the second sliding member from the recess 3112 adjacent to each other in the radial direction of the first sliding member 3011. The flow of lubricating oil along the inclined surface 3112b collides. As a result, the pressure applied to the second sliding member in the direction away from the first sliding member 3011 increases, so that the friction loss and wear of the first sliding member 3011 and the second sliding member can be further reduced.

実施の形態１では、窪み部１１２が第１摺動部材１１の周方向に沿って２列に配列しており、径方向で隣り合う２つの窪み部１１２の間隔が第１摺動部材１１の全周に亘って同じである例について説明した。但し、窪み部の配置はこれに限定されるものではない。例えば図８に示す第１摺動部材４０１１のように、周方向で隣り合う２組の窪み部４１１３、４１１４について、径方向で隣り合う２つの窪み部４１１３同士の間隔Ｗ４２と径方向で隣り合う２つの窪み部４１１４同士の間隔Ｗ４３とが互いに異なる構成であってもよい。なお、間隔Ｗ４２、Ｗ４３は、径方向で隣り合う２つの窪み部４１１３、４１１４における第１傾斜面４１１２ａと第２傾斜面４１１２ｂとの境界部分と窪み部４１１３、４１１４の中心軸Ｊ４１、Ｊ４２との交点間の間隔に相当する。ここにおいて、２つの窪み部４１１３と２つの窪み部４１１４とを有する窪み部組４１１２が、第１摺動部材４０１１の周方向に沿って等間隔に位置する複数の領域Ａ４それぞれに形成されている。 In the first embodiment, the recesses 112 are arranged in two rows along the circumferential direction of the first sliding member 11, and the distance between the two recesses 112 adjacent to each other in the radial direction is the distance of the first sliding member 11. An example that is the same over the entire circumference has been described. However, the arrangement of the recessed portion is not limited to this. For example, as in the first sliding member 4011 shown in FIG. 8, for two sets of recesses 4113 and 4114 that are adjacent to each other in the circumferential direction, they are adjacent to each other in the radial direction with the distance W42 between the two recesses 4113 that are adjacent in the radial direction. The spacing W43 between the two recesses 4114 may be different from each other. The intervals W42 and W43 are such that the boundary portion between the first inclined surface 4112a and the second inclined surface 4112b in the two recessed portions 4113 and 4114 adjacent to each other in the radial direction and the central axes J41 and J42 of the recessed portions 4113 and 4114. Corresponds to the distance between intersections. Here, a recessed portion 4112 having two recessed portions 4113 and two recessed portions 4114 is formed in each of a plurality of regions A4 located at equal intervals along the circumferential direction of the first sliding member 4011. ..

２つの窪み部４１１３のうち径方向における外側に位置する一方の中心軸Ｊ４１と２つの窪み部４１１４のうち径方向における外側に位置する一方の中心軸Ｊ４１とは、一致している。また、２つの窪み部４１１３のうち径方向における内側に位置する一方の中心軸Ｊ４２と２つの窪み部４１１４のうち径方向における内側に位置する一方の中心軸Ｊ４２とは、一致している。また、窪み部４１１３、４１１４の中心軸Ｊ４１、Ｊ４２は、第２摺動部材の摺動方向ＡＲ２に対して傾斜している。窪み部４１１３、４１１４は、平面視において、摺動方向ＡＲ２に沿った中心軸Ｊ４１（Ｊ４２）方向の長さＬ４１＋Ｌ４２と、中心軸Ｊ４１（Ｊ４２）と直交する方向の長さＷ４１と、が異なる異方的な形状を有する。ここで、「摺動方向ＡＲ２に沿った中心軸Ｊ４１（Ｊ４２）」とは、摺動方向ＡＲ２に対して傾斜した中心軸Ｊ４１（Ｊ４２）を意味する。そして、平面視において、第１傾斜面４１１２ａの中心軸Ｊ４１（Ｊ４２）方向の長さＬ４１は、第２傾斜面４１１２ｂの中心軸Ｊ４１（Ｊ４２）方向の長さＬ４２に比べて長い。窪み部４１１３、４１１４の中心軸Ｊ４１、Ｊ４２の第２摺動部材の摺動方向ＡＲ２に対する傾斜角θ４は、例えば５度乃至２０度に設定される。そして、中心軸Ｊ４１、Ｊ４２は、窪み部４１１３、４１１４の摺動方向ＡＲ２側で互いに交差している。つまり、第１摺動部材４０１１の径方向における外側で周方向に並ぶ２つの窪み部４１１３、４１１４と第１摺動部材４０１１の径方向における内側で周方向に並ぶ２つの窪み部４１１３、４１１４とが、摺動方向ＡＲ２に対していわゆるヘリングボーン型に配置されている。これに伴い、２つの窪み部４１１４同士の間隔Ｗ４３は、２つの窪み部４１１３同士の間隔Ｗ４２よりも狭くなっている。なお、窪み部４１１３、４１１４の幅を狭くして窪み部４１１３、４１１４の径方向の幅を更に狭くしてもよい。 The central axis J41 located on the outer side in the radial direction of the two recessed portions 4113 and the central axis J41 located on the outer side in the radial direction of the two recessed portions 4114 coincide with each other. Further, the central axis J42 of the two recesses 4113 located inward in the radial direction and the central axis J42 of the two recesses 4114 located inward in the radial direction coincide with each other. Further, the central axes J41 and J42 of the recessed portions 4113 and 4114 are inclined with respect to the sliding direction AR2 of the second sliding member. The recessed portions 4113 and 4114 differ in length L41 + L42 in the central axis J41 (J42) direction along the sliding direction AR2 and length W41 in the direction orthogonal to the central axis J41 (J42) in a plan view. It has a rectangular shape. Here, the "central axis J41 (J42) along the sliding direction AR2" means the central axis J41 (J42) inclined with respect to the sliding direction AR2. Then, in a plan view, the length L41 of the first inclined surface 4112a in the central axis J41 (J42) direction is longer than the length L42 of the second inclined surface 4112b in the central axis J41 (J42) direction. The inclination angle θ4 with respect to the sliding direction AR2 of the second sliding member of the central axes J41 and J42 of the recessed portions 4113 and 4114 is set to, for example, 5 degrees to 20 degrees. The central axes J41 and J42 intersect each other on the AR2 side in the sliding direction of the recessed portions 4113 and 4114. That is, two recesses 4113, 4114 arranged in the radial direction on the outside of the first sliding member 4011 and two recesses 4113, 4114 arranged in the circumferential direction on the inside in the radial direction of the first sliding member 4011. Is arranged in a so-called herringbone type with respect to the sliding direction AR2. Along with this, the distance W43 between the two recesses 4114 is narrower than the distance W42 between the two recesses 4113. The width of the recesses 4113 and 4114 may be narrowed to further narrow the radial width of the recesses 4113 and 4114.

本構成によれば、第１摺動部材４０１１に対して第２摺動部材を矢印ＡＲ２方向へ摺動させた場合、第１摺動部材４０１１の径方向における外側、内側それぞれの窪み部４１１３、４１１４からの潤滑油の流れが衝突する。これにより、第２摺動部材に加わる第１摺動部材４０１１から離れる方向への圧力が増加するので、第１摺動部材４０１１と第２摺動部材との接触によるエネルギ損失や第１摺動部材４０１１または第２摺動部材の摩耗が低減される。 According to this configuration, when the second sliding member is slid with respect to the first sliding member 4011 in the direction of arrow AR2, the outer and inner recesses 4113 in the radial direction of the first sliding member 4011, respectively. Lubricating oil flows from 4114 collide. As a result, the pressure applied to the second sliding member in the direction away from the first sliding member 4011 increases, so that energy loss due to contact between the first sliding member 4011 and the second sliding member and the first sliding are performed. Wear of member 4011 or the second sliding member is reduced.

実施の形態１では、窪み部１１２が第１摺動部材１１の周方向に沿って２列に配列している例について説明したが、窪み部１１２の配置は２列に限定されるものではない。例えば、図９に示す第１摺動部材５０１１のように、窪み部５１１２が第１摺動部材５０１１の周方向に沿って６列に配列している構成であってもよい。 In the first embodiment, an example in which the recesses 112 are arranged in two rows along the circumferential direction of the first sliding member 11 has been described, but the arrangement of the recesses 112 is not limited to the two rows. .. For example, as in the case of the first sliding member 5011 shown in FIG. 9, the recessed portions 5112 may be arranged in six rows along the circumferential direction of the first sliding member 5011.

第１摺動部材５０１１の径方向に並ぶ６つの窪み部５１１２の中心軸Ｊ５１は、いずれも第２摺動部材の摺動方向ＡＲ２に対して傾斜角θ５だけ傾斜している。窪み部５１１２は、平面視において、摺動方向ＡＲ２に沿った中心軸Ｊ５１方向の長さＬ５１＋Ｌ５２と、中心軸Ｊ５１と直交する方向の長さＷ５１と、が異なる異方的な形状を有する。ここで、「摺動方向ＡＲ２に沿った中心軸Ｊ５１」とは、摺動方向ＡＲ２に対して傾斜した中心軸Ｊ５１を意味する。そして、平面視において、第１傾斜面５１１２ａの中心軸Ｊ５１方向の長さＬ５１は、第２傾斜面５１１２ｂの中心軸Ｊ５１方向の長さＬ５２に比べて長い。また、各窪み部５１１２の中心軸Ｊ５１は、いわゆるスパイラル型に配置されており、窪み部５１１２の摺動方向ＡＲ２側ほど第１摺動部材５０１１の中心に近づくように傾斜している。 The central axes J51 of the six recessed portions 5112 arranged in the radial direction of the first sliding member 5011 are all inclined by an inclination angle θ5 with respect to the sliding direction AR2 of the second sliding member. The recessed portion 5112 has an anisotropic shape in which the length L51 + L52 in the direction of the central axis J51 along the sliding direction AR2 and the length W51 in the direction orthogonal to the central axis J51 are different in a plan view. Here, the "central axis J51 along the sliding direction AR2" means the central axis J51 inclined with respect to the sliding direction AR2. Then, in a plan view, the length L51 of the first inclined surface 5112a in the central axis J51 direction is longer than the length L52 of the second inclined surface 5112b in the central axis J51 direction. Further, the central axis J51 of each recessed portion 5112 is arranged in a so-called spiral shape, and is inclined so as to be closer to the center of the first sliding member 5011 toward the AR2 side in the sliding direction of the recessed portion 5112.

なお、窪み部５１１２の幅を狭くして第１摺動部材５０１１の径方向で隣り合う２つの窪み部５１１２同士の間隔を更に狭くしてもよい。また、第１摺動部材５０１１の外側に設ける窪み部５１１２の数を増加することにより、第１摺動部材５０１１の外側の窪み部５１１２の密度を向上させてもよい。また、複数の窪み部５１１２が、それらの第１傾斜面５１１２ａ、第２傾斜面５１１２ｂの傾斜角が第１摺動部材５０１１の外側から内側に向かって漸次変化する形で形成されていてもよい。 The width of the recessed portion 5112 may be narrowed to further narrow the distance between the two recessed portions 5112 adjacent to each other in the radial direction of the first sliding member 5011. Further, the density of the recessed portions 5112 on the outer side of the first sliding member 5011 may be improved by increasing the number of the recessed portions 5112 provided on the outer side of the first sliding member 5011. Further, the plurality of recessed portions 5112 may be formed so that the inclination angles of the first inclined surface 5112a and the second inclined surface 5112b gradually change from the outside to the inside of the first sliding member 5011. ..

本構成によれば、第１摺動部材５０１１に対して第２摺動部材を矢印ＡＲ２方向へ摺動させた場合、各窪み部５１１２からの潤滑油の流れが第１摺動部材５０１１の中央部に集中する。これにより、第２摺動部材に加わる第１摺動部材５０１１から離れる方向への圧力が増加するので、第１摺動部材５０１１に対して第２摺動部材を流体潤滑領域で摺動させることができる。従って、第１摺動部材５０１１と第２摺動部材との接触によるエネルギ損失や第１摺動部材５０１１または第２摺動部材の摩耗が低減される。 According to this configuration, when the second sliding member is slid with respect to the first sliding member 5011 in the direction of arrow AR2, the flow of the lubricating oil from each recess 5112 is at the center of the first sliding member 5011. Focus on the club. As a result, the pressure applied to the second sliding member in the direction away from the first sliding member 5011 increases, so that the second sliding member is slid with respect to the first sliding member 5011 in the fluid lubrication region. Can be done. Therefore, energy loss due to contact between the first sliding member 5011 and the second sliding member and wear of the first sliding member 5011 or the second sliding member are reduced.

実施の形態および前述の変形例では、第１摺動部材の径方向に並ぶ窪み部の数が２つ、４つ、６つの場合について説明したが、第１摺動部材の径方向に並ぶ窪み部の数はこれらに限定されない。例えば第１摺動部材の径方向に並ぶ窪み部の数が、１つであってもよいし、３つであってもよいし、５つであってもよいし、７つ以上であってもよい。 In the embodiment and the above-mentioned modification, the case where the number of the number of the dents arranged in the radial direction of the first sliding member is two, four, or six has been described, but the dents arranged in the radial direction of the first sliding member have been described. The number of copies is not limited to these. For example, the number of recesses arranged in the radial direction of the first sliding member may be one, three, five, or seven or more. May be good.

実施の形態１で説明した窪み部形成工程において、工具９１と基材９０１１との間に電圧を印加したときに工具９１と基材９０１１との間に流れる電流を検出することにより工具９１と基材９０１１との位置関係を監視してもよい。例えば窪み部形成工程において、工具９１による基材９０１１の単位時間当たりの切削量（切削深さ）を示す切削量情報を記憶する記憶部と、工具９１と基材９０１１との間に電圧を印加する電圧印加部と、工具９１から基材９０１１へ流れる電流を検出する電流検出部と、を備える工作機械を使用すればよい。工作機械は、窪み部形成工程において、工具９１と基材９０１１との間の通電状況を監視しながら工具９１を基材９０１１へ近づけていく。そして、工作機械は、工具９１と基材９０１１との間を流れる電流を検出した時点を基準にして、記憶部が記憶する単位時間当たりの切削量に基づいて切削加工を実行する。 In the recess forming step described in the first embodiment, when a voltage is applied between the tool 91 and the base material 9011, the current flowing between the tool 91 and the base material 9011 is detected to form the tool 91 and the base. The positional relationship with the material 9011 may be monitored. For example, in the recess forming step, a voltage is applied between the tool 91 and the base material 9011 and a storage unit that stores cutting amount information indicating the cutting amount (cutting depth) of the base material 9011 by the tool 91 per unit time. A machine tool may be used that includes a voltage application unit and a current detection unit that detects a current flowing from the tool 91 to the base material 9011. In the recess forming process, the machine tool brings the tool 91 closer to the base material 9011 while monitoring the energization status between the tool 91 and the base material 9011. Then, the machine tool executes the cutting process based on the cutting amount per unit time stored in the storage unit with reference to the time point when the current flowing between the tool 91 and the base material 9011 is detected.

或いは、窪み部形成工程において、ＡＥ（Acoustic Emission）計測技術を利用して工具９１と基材９０１１との位置関係を監視してもよい。この場合、窪み部形成工程において、工具９１による基材９０１１の単位時間当たりの切削量を示す切削量情報を記憶する記憶部と、工具９１が基材９０１１に接触したときに基材９０１１内を伝播するＡＥ波を検出するＡＥ波検出部と、を備える工作機械を使用すればよい。工作機械は、ＡＥ波検出部によりＡＥ波が検出されるか否かを監視しながら工具９１を基材９０１１へ近づけていく。そして、工作機械は、ＡＥ波を検出した時点を基準にして、記憶部が記憶する単位時間当たりの切削量に基づいて切削加工を実行する。以上説明したような工作機械を用いることにより、窪み部１１２の深さ方向の加工精度を向上させることができる。 Alternatively, in the recess forming step, the positional relationship between the tool 91 and the base material 9011 may be monitored by using the AE (Acoustic Emission) measurement technique. In this case, in the recess forming step, the storage unit for storing the cutting amount information indicating the cutting amount of the base material 9011 by the tool 91 per unit time and the inside of the base material 9011 when the tool 91 comes into contact with the base material 9011. A machine tool provided with an AE wave detection unit that detects a propagating AE wave may be used. The machine tool brings the tool 91 closer to the base material 9011 while monitoring whether or not the AE wave is detected by the AE wave detection unit. Then, the machine tool executes the cutting process based on the cutting amount per unit time stored in the storage unit with reference to the time point when the AE wave is detected. By using the machine tool as described above, it is possible to improve the machining accuracy of the recessed portion 112 in the depth direction.

実施の形態１では、窪み部形成工程において、円筒状の工具９１を筒軸Ｊ９１周りに回転させながら、基材９０１１の主面９１１１に押し当てて切削または研削する例について説明したが、切削または研削する方法はこの方法に限定されない。例えば、彫刻刃型のような工具の刃先を基材９０１１の主面９１１１に押し当てて基材９０１１を切削する方法であってもよい。この場合、実施の形態１に係る摺動機構の製造方法と同様に、窪み部１１２生成後の表面研磨処理が不要となる。従って、製造工程の簡素化を図ることができるという利点がある。また、基材９０１１がいわゆる硬脆材料であっても欠陥の発生が抑制される。 In the first embodiment, in the recess forming step, an example in which the cylindrical tool 91 is pressed against the main surface 9111 of the base material 9011 while rotating around the cylinder shaft J91 to be cut or ground has been described. The method of grinding is not limited to this method. For example, a method of cutting the base material 9011 by pressing the cutting edge of a tool such as an engraving blade against the main surface 9111 of the base material 9011 may be used. In this case, as in the method for manufacturing the sliding mechanism according to the first embodiment, the surface polishing treatment after the dent portion 112 is formed becomes unnecessary. Therefore, there is an advantage that the manufacturing process can be simplified. Further, even if the base material 9011 is a so-called hard and brittle material, the occurrence of defects is suppressed.

実施の形態１では、窪み部形成工程において、切削加工または研削加工を採用する例について説明したが、これに限定されるものではない。例えば、窪み部形成工程において、外形が基材９０１１の主面９１１１に形成する複数の窪み部１１２それぞれの内側の形状と同じ同一形状部分を有する工具を用いて、同一形状部分を基材９０１１の主面９１１１に転写するいわゆる塑性加工方法を採用してもよい。この場合、窪み部形成工程において、例えば、基材９０１１よりも硬度の高い材料から形成された円柱状の工具を使用する。そして、工具の先端部を基材９０１１の主面９１１１に押し当てて基材９０１１を塑性変形させることにより、基材９０１１の主面９１１１に窪み部を形成する。このとき、工具の中心軸が傾く方向を、第１摺動部材１１に対して第２摺動部材１２が摺動する方向に設定する。そして、工具の中心軸を、基材９０１１の主面９１１１に対して４５度よりも小さい角度だけ傾斜させる。これにより、実施の形態１で説明した窪み１１２と同様の窪み部を基材９０１１の主面９１１１に形成することができる。このように窪み部形成工程において塑性加工方法を採用することにより、窪み部形成工程に要する処理時間の短縮を図ることができる。 In the first embodiment, an example in which cutting or grinding is adopted in the recess forming step has been described, but the present invention is not limited to this. For example, in the recess forming step, a tool having the same shape as the inner shape of each of the plurality of recesses 112 whose outer shape is formed on the main surface 9111 of the base material 9011 is used to form the same shape portion of the base material 9011. A so-called plastic working method of transferring to the main surface 9111 may be adopted. In this case, in the recess forming step, for example, a columnar tool formed of a material having a hardness higher than that of the base material 9011 is used. Then, the tip portion of the tool is pressed against the main surface 9111 of the base material 9011 to plastically deform the base material 9011 to form a recessed portion on the main surface 9111 of the base material 9011. At this time, the direction in which the central axis of the tool is tilted is set to the direction in which the second sliding member 12 slides with respect to the first sliding member 11. Then, the central axis of the tool is tilted with respect to the main surface 9111 of the base material 9011 by an angle smaller than 45 degrees. Thereby, the same recessed portion as the recessed 112 described in the first embodiment can be formed on the main surface 9111 of the base material 9011. By adopting the plastic working method in the recessed portion forming step in this way, the processing time required for the recessed portion forming step can be shortened.

また、実施の形態１に係る窪み部形成工程において、工具９１の代わりに電極を用いて、電極と基材９０１１との間で放電させることにより基材９０１１に窪み部１１２を形成してもよい。 Further, in the recessed portion forming step according to the first embodiment, the recessed portion 112 may be formed in the base material 9011 by using an electrode instead of the tool 91 and discharging the electrode between the electrode and the base material 9011. ..

実施の形態１では、窪み部形成工程において、刃先が９０度の円筒状のスクエアエンドミルまたは砥石である工具９１を使用する例について説明したが、使用する工具の形状はこれに限定されるものではない。例えば、刃先に丸みが形成された工具、刃先が面取りされた工具、刃先が９０度よりも小さい角度に設定された工具、或いは、刃先が９０度よりも大きい角度に設定された工具を採用してもよい。 In the first embodiment, an example of using a tool 91 which is a cylindrical square end mill or a grindstone having a cutting edge of 90 degrees has been described in the recess forming step, but the shape of the tool to be used is not limited to this. No. For example, a tool with a rounded cutting edge, a tool with a chamfered cutting edge, a tool with a cutting edge set at an angle smaller than 90 degrees, or a tool with a cutting edge set at an angle larger than 90 degrees is adopted. You may.

実施の形態２では、窪み部６１１２の第１傾斜面１１２ａと第２傾斜面１１２ｂの第１摺動面６５１１に対する傾斜角が互いに異なる例について説明したが、窪み部の形状はこれに限定されない。例えば、ベーン６０５１に対してベーン溝６０５４が相対的に摺動する方向において、第１傾斜面の第１摺動面６５１１に対する傾斜角と第２傾斜面の第１摺動面６５１１に対する傾斜角とが等しい構成であってもよい。本構成によれば、ベーン６０５１が鉛直下方へ移動する場合のみならず、ベーン６０５１が鉛直上方へ移動する場合も、ベーン６０５１の第１摺動面６５１１とベーン溝６０５４の第２摺動面６５４１との間に生じる摺動抵抗を低減することができる。 In the second embodiment, an example in which the inclination angles of the recessed portion 6112 with respect to the first inclined surface 112a and the second inclined surface 112b with respect to the first sliding surface 6511 are different from each other has been described, but the shape of the recessed portion is not limited to this. For example, in the direction in which the vane groove 6054 slides relative to the vane 6051, the inclination angle of the first inclined surface with respect to the first sliding surface 6511 and the inclination angle of the second inclined surface with respect to the first sliding surface 6511. May be equal. According to this configuration, not only when the vane 6051 moves vertically downward, but also when the vane 6051 moves vertically upward, the first sliding surface 6511 of the vane 6051 and the second sliding surface 6541 of the vane groove 6054 It is possible to reduce the sliding resistance generated between the and.

実施の形態２では、ベーン６０５１が、第１傾斜面１１２ａと第２傾斜面１１２ｂとのなす角度が９０度である窪み部６１１２を有する例について説明したが、窪み部の形状はこれに限定されない。ベーン６０５１は、例えば第１傾斜面１１２ａと第２傾斜面１１２ｂとのなす角度が９０度よりも大きい角度に設定された窪み部を有する構成であってもよい。 In the second embodiment, an example in which the vane 6051 has a recessed portion 6112 in which the angle formed by the first inclined surface 112a and the second inclined surface 112b is 90 degrees has been described, but the shape of the recessed portion is not limited thereto. .. The vane 6051 may have, for example, a configuration having a recessed portion in which the angle formed by the first inclined surface 112a and the second inclined surface 112b is set to an angle larger than 90 degrees.

以上、本発明の実施の形態および変形例（なお書きに記載したものを含む。）について説明したが、本発明はこれらに限定されるものではない。本発明は、実施の形態及び変形例が適宜組み合わされたもの、それに適宜変更が加えられたものを含む。 Although embodiments and modifications of the present invention (including those described in the description) have been described above, the present invention is not limited thereto. The present invention includes a combination of embodiments and modifications as appropriate, and modifications thereof as appropriate.

本発明は、空気調和機の圧縮機に好適に利用することができる。 The present invention can be suitably used for a compressor of an air conditioner.

１，２００１ 摺動機構、１１，２０１１，３０１１，４０１１，５０１１ 第１摺動部材、１２ 第２摺動部材、１７ 主軸、１８ プール、９１ 工具、１１１，２１１１，３１１１，４１１１，５１１１，６５１１ 第１摺動面、１１２，２１１２，３１１２，４１１３，４１１４，５１１２，６１１２ 窪み部、１１２ａ，２１１２ａ，３１１２ａ，４１１２ａ，５１１２ａ 第１傾斜面、１１２ｂ，２１１２ｂ，３１１２ｂ，４１１２ｂ，５１１２ｂ 第２傾斜面、１２１，６５４１ 第２摺動面、４１１２ 窪み部組、６００１ 圧縮機、６０５１ ベーン、６０５２ ピストン、６０５３ シリンダ、６０５４ ベーン溝、６０５５ 吸気孔、６０５６ 排気孔、９０１１ 基材、９１１１ 主面、Ａ４ 領域、ＡＲ２，ＡＲ６３ 摺動方向、Ｒ２ 圧縮室、Ｊ６１ 回転軸、Ｊ１１，Ｊ２１，Ｊ３１，Ｊ３２，Ｊ４１，Ｊ４２，Ｊ５１，Ｊ６２，Ｊ６３ 中心軸、Ｊ９１，Ｊ９２ 筒軸 1,2001 Sliding mechanism 11,2011,3011,4011,5011 First sliding member, 12 Second sliding member, 17 Spindle, 18 Pool, 91 Tools, 111,2111,3111,4111,5111,6511 1 Sliding surface, 112, 211,3112, 4113, 4114, 5112, 6112 recessed portion, 112a, 2112a, 3112a, 4112a, 5112a 1st inclined surface, 112b, 2112b, 3112b, 4112b, 5112b 2nd inclined surface, 121 , 6541 2nd sliding surface, 4112 recessed part, 6001 compressor, 6051 vane, 6052 piston, 6053 cylinder, 6054 vane groove, 6055 intake hole, 6056 exhaust hole, 9011 base material, 9111 main surface, A4 area, AR2 , AR63 Sliding direction, R2 compression chamber, J61 rotating shaft, J11, J21, J31, J32, J41, J42, J51, J62, J63 central shaft, J91, J92 tubular shaft

Claims (6)

複数の窪み部が形成された第１摺動面を有する第１摺動部材と、
前記第１摺動部材の第１摺動面と潤滑油を介して対向する第２摺動面を有する第２摺動部材と、を備え、
前記複数の窪み部は、それぞれ、平面視において、周縁全体が前記第１摺動面の周縁よりも内側に位置し、前記第１摺動部材に対して前記第２摺動部材が相対的に摺動する摺動方向に沿った中心軸方向の長さと前記中心軸方向と直交する方向の長さとが異なる異方的な形状を有し、前記中心軸と平行な一方向に向かって深さが増加する形で傾斜した第１傾斜面と、前記一方向に向かって深さが減少する形で傾斜した第２傾斜面と、を有し、
前記第１摺動面と直交する方向から見たときの前記複数の窪み部それぞれの中心軸は、前記摺動方向に対して傾斜している、
摺動機構。 A first sliding member having a first sliding surface on which a plurality of recesses are formed,
A second sliding member having a second sliding surface facing the first sliding surface of the first sliding member via a lubricating oil is provided.
In each of the plurality of recesses, the entire peripheral edge is located inside the peripheral edge of the first sliding surface in a plan view, and the second sliding member is relative to the first sliding member. It has an anisotropic shape in which the length in the central axis direction along the sliding sliding direction and the length in the direction orthogonal to the central axis direction are different, and the depth is toward one direction parallel to the central axis. There possess a first inclined surface inclined in a manner that increases, and the second inclined surface depth toward the one direction is inclined with decreasing form, a,
The central axis of each of the plurality of recesses when viewed from a direction orthogonal to the first sliding surface is inclined with respect to the sliding direction.
Sliding mechanism. 前記第１傾斜面の前記第１摺動面に対する傾斜角は、前記第２傾斜面の第１摺動面に対する傾斜角よりも小さい、
請求項１に記載の摺動機構。 The inclination angle of the first inclined surface with respect to the first sliding surface is smaller than the inclination angle of the second inclined surface with respect to the first sliding surface.
The sliding mechanism according to claim 1. 前記複数の窪み部それぞれの前記第２傾斜面は、前記第１傾斜面と前記第２傾斜面との境界部分から離れるにつれて前記摺動方向に直交する方向の幅が狭くなっている、
請求項１または２に記載の摺動機構。 The width of the second inclined surface of each of the plurality of recessed portions becomes narrower in the direction orthogonal to the sliding direction as the distance from the boundary portion between the first inclined surface and the second inclined surface increases.
The sliding mechanism according to claim 1 or 2. 前記第１摺動面と直交する方向から見たときの、前記摺動方向に直交する方向で隣り合う２つの窪み部それぞれの中心軸は、前記摺動方向側で互いに交差している、
請求項１に記載の摺動機構。 When viewed from a direction orthogonal to the first sliding surface, the central axes of the two recesses adjacent to each other in the direction orthogonal to the sliding direction intersect each other on the sliding direction side.
The sliding mechanism according to claim 1. 前記第１摺動面と直交する方向から見たときの、前記摺動方向に直交する方向で隣り合う２つの窪み部それぞれの中心軸は、互いに平行である、
請求項１に記載の摺動機構。 When viewed from a direction orthogonal to the first sliding surface, the central axes of the two recesses adjacent to each other in the direction orthogonal to the sliding direction are parallel to each other.
The sliding mechanism according to claim 1. ベーンと、
前記ベーンが内側を摺動するベーン溝を有するシリンダと、
前記シリンダ内に配置され偏心回転するピストンと、を備え、
前記ベーンの摺動面に複数の窪み部が形成され、
前記複数の窪み部は、それぞれ、平面視において、周縁全体が前記摺動面の周縁よりも内側に位置し、前記ベーンに対して前記ベーン溝の内壁が相対的に摺動する摺動方向に沿った中心軸方向の長さと前記中心軸方向と直交する方向の長さとが異なる異方的な形状を有し、前記中心軸に平行な一方向に向かって深さが増加する形で傾斜した第１傾斜面と、前記一方向に向かって深さが減少する形で傾斜した第２傾斜面と、を有し、
前記摺動面と直交する方向から見たときの前記複数の窪み部それぞれの中心軸は、前記摺動方向に対して傾斜している、
圧縮機。 With Vane,
A cylinder having a vane groove on which the vane slides inside,
With a piston arranged in the cylinder and rotating eccentrically,
A plurality of recesses are formed on the sliding surface of the vane.
In each of the plurality of recesses, in a plan view, the entire peripheral edge is located inside the peripheral edge of the sliding surface, and the inner wall of the vane groove slides relative to the vane in the sliding direction. It has an anisotropic shape in which the length in the direction along the central axis and the length in the direction orthogonal to the central axis are different, and it is inclined so that the depth increases in one direction parallel to the central axis. a first inclined surface, and the second inclined surface depth toward the one direction is inclined with decreasing form, was closed,
The central axis of each of the plurality of recesses when viewed from a direction orthogonal to the sliding surface is inclined with respect to the sliding direction.
Compressor.
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