JPS60205017A - Bearing device - Google Patents

Bearing device

Info

Publication number
JPS60205017A
JPS60205017A JP6249984A JP6249984A JPS60205017A JP S60205017 A JPS60205017 A JP S60205017A JP 6249984 A JP6249984 A JP 6249984A JP 6249984 A JP6249984 A JP 6249984A JP S60205017 A JPS60205017 A JP S60205017A
Authority
JP
Japan
Prior art keywords
contact surface
ceramic
bearing device
section
contact
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP6249984A
Other languages
Japanese (ja)
Inventor
Kazuo Takahashi
一夫 高橋
Takahide Kakinuma
柿沼　孝英
Toshitsugu Koiwa
小岩　寿次
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tokyo Sanyo Electric Co Ltd
Sanyo Electric Co Ltd
Sanyo Denki Co Ltd
Original Assignee
Tokyo Sanyo Electric Co Ltd
Sanyo Electric Co Ltd
Sanyo Denki Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tokyo Sanyo Electric Co Ltd, Sanyo Electric Co Ltd, Sanyo Denki Co Ltd filed Critical Tokyo Sanyo Electric Co Ltd
Priority to JP6249984A priority Critical patent/JPS60205017A/en
Publication of JPS60205017A publication Critical patent/JPS60205017A/en
Pending legal-status Critical Current

Links

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
    • F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
    • F16C23/02—Sliding-contact bearings
    • F16C23/04—Sliding-contact bearings self-adjusting
    • F16C23/043—Sliding-contact bearings self-adjusting with spherical surfaces, e.g. spherical plain bearings
    • F16C23/045—Sliding-contact bearings self-adjusting with spherical surfaces, e.g. spherical plain bearings for radial load mainly, e.g. radial spherical plain 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/043—Sliding surface consisting mainly of ceramics, cermets or hard carbon, e.g. diamond like carbon [DLC]

Abstract

PURPOSE:To aim at obtaining an oil-less bearing device having a high-strength, by forming the bearing device with an Si compound ceramic section which is formed with a groove in its contact surface made in contact with a rotary shaft, and with a metal section which is jointed to the noncontact surface of the ceramic section. CONSTITUTION:A spiral groove 8 is formed in the contact surface 7 of a ceramic section 5 made of silicone carbide (SiC), which is made in contact with a rotary shaft 5. Further, a metal section 9 is jointed to the noncontact surface of the ceramic section 5 by shrink-fit through projections 10 formed on the noncontact surface at 90 deg. angular intervals. This metal section 9 is made of iron so that it allows heat generated in the ceramic section 5 to be dissipated in order to protect the ceramic section 5.

Description

【発明の詳細な説明】 （イ）産業上の利用分野 本発明は回転軸との接触面にＳｉ化合物を用いるセラミ
ックス軸受に係るものである。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a ceramic bearing that uses a Si compound on the contact surface with a rotating shaft.

（ロ）従来技術 一般Ｋ、従来の軸受装置は例えば電動機用としては、軸
受メタルを銅、カーボン、鉄からなる焼結体に潤滑油を
含浸させたものが用いられていた。(B) Prior Art General K. For example, in a conventional bearing device for an electric motor, a bearing metal made of a sintered body made of copper, carbon, or iron impregnated with lubricating oil has been used.

このようなオイル含浸タイプは、電動機の駆動開始の初
期には潤滑油が充分に供給されて、円滑に回転軸の回転
が確保される。しかしこのような軸受装置を長期間使用
した場合には酸化による潤滑油の劣化や使用条件によっ
ては潤滑油が外部に奪われるなどして充分な潤滑効果が
行なえなくなる場合があった。従って潤滑油の供給が悪
くなるＫつれて回転軸と軸受メタルとの摩擦係数が増加
して摩耗が進行する。すなわち軸受メタルの焼付けが発
生するものであった。In such an oil-impregnated type, a sufficient amount of lubricating oil is supplied at the beginning of driving the electric motor, and smooth rotation of the rotating shaft is ensured. However, if such a bearing device is used for a long period of time, the lubricating oil may deteriorate due to oxidation or, depending on the conditions of use, the lubricating oil may be taken away to the outside, so that a sufficient lubricating effect may not be achieved. Therefore, as the supply of lubricating oil deteriorates, the coefficient of friction between the rotating shaft and the bearing metal increases and wear progresses. In other words, seizure of the bearing metal occurred.

これに対して特開昭５７−５１１７３号公報には耐熱衝
撃性を向上させるためにオキシドセラミック材料を用い
た例が記載されている。このようなセラミックス材料を
用いた軸受装置は耐熱性が向上するが、周知のようにセ
ラミックス材料は熱伝導性が悪く駆動中は高温になる問
題点があった。On the other hand, JP-A-57-51173 describes an example in which an oxide ceramic material is used to improve thermal shock resistance. Bearing devices using such ceramic materials have improved heat resistance, but as is well known, ceramic materials have a problem of poor thermal conductivity and high temperatures during operation.

またこのセラミックス材料は外部からの衝撃に弱く容易
に破損してしまう欠点を有していた。Additionally, this ceramic material has the disadvantage that it is weak against external impacts and easily breaks.

（ハ）発明の目的 斯る問題点に鑑み、本発明による軸受装置はシリコン化
合物（Ｓｉ化合物）例えばセラミックスを用いても充分
な強度が得られかつオイルレス化を図った軸受装置を提
供するものである。(c) Purpose of the Invention In view of the above problems, the present invention provides a bearing device that can obtain sufficient strength even when using a silicon compound (Si compound) such as ceramics and is oil-free. It is.

に）発明の構成 本発明の軸受装置は回転軸との接触面Ｋ　Ｓｉ化合物を
用いるセラミックス軸受において、この接触面に溝を有
するセラミックス部と、このセラミックス部の反接触面
側に接合する金桐部とを備え、この金属部によって軸受
装置の外部からの衝撃九対する強度を増加し、かつセラ
ミックス部の溝と合わせて充分な放熱が行なえるように
したものである。B) Structure of the Invention The bearing device of the present invention has a ceramic bearing that uses a contact surface K with a rotating shaft and a Si compound. The metal part increases the strength of the bearing device against external shocks, and together with the grooves in the ceramic part, provides sufficient heat dissipation.

（ホ）実施例 以下、本発明の実施例を第１図乃至第３図に基づいて説
明すると、第１図は本発明の実施例を示す断面図であり
、固定子巻線ｆｉ＋及び回転子（２）を有する誘導電動
機を示している。（３）は誘導電動機のケース、（４）
は軸受装置であり、第２図、第３図に示すように構成さ
れている。（５）はセラミックス部であり、シリコンカ
ーバイド（ＳｉＣ）からなっている。さらに回転軸（６
）との接触面（７）には螺旋状の溝（８）が形成されて
いる。（９）は金属部であり、セラミックス部（５）の
反接触面側に９０°間隔で設けた突起αＱを用いて焼ば
め式で接合されている。この金属部（９）の材質は鉄で
ある。これはセラミックス部（５）Ｋ生じた熱を放熱さ
せかつセラミックス部（５）の保護を行なうために設け
たものであり、この材質としては鉄に限るものではなく
アルミ合金など他の金属を用いても良いものである。ま
た、回転子（２）に挿入された回転軸（６）の表面には
防鉋及び耐摩耗性の向上を目的として（ＳｉＣ）十窒化
ホウ素（ＢＮ）複合セラミックス、あるいは窒化チタン
（ＴｉＮ）セラミックスを約５〜１０μ程度の厚さでコ
ーテングしている。(E) Embodiment Hereinafter, embodiments of the present invention will be explained based on FIGS. 1 to 3. FIG. 1 is a cross-sectional view showing the embodiment of the present invention. (2) shows an induction motor with (3) is the case of induction motor, (4)
is a bearing device, and is constructed as shown in FIGS. 2 and 3. (5) is a ceramic portion made of silicon carbide (SiC). Furthermore, the rotation axis (6
) A helical groove (8) is formed on the contact surface (7). (9) is a metal part, which is joined by shrink fit using protrusions αQ provided at 90° intervals on the side opposite to the contact surface of the ceramic part (5). The material of this metal part (9) is iron. This is provided to dissipate the heat generated by the ceramic part (5)K and to protect the ceramic part (5).The material is not limited to iron, but other metals such as aluminum alloy can be used. It's a good thing. In addition, the surface of the rotating shaft (6) inserted into the rotor (2) is made of (SiC), boron nitride (BN) composite ceramics, or titanium nitride (TiN) ceramics for the purpose of preventing planes and improving wear resistance. is coated with a thickness of approximately 5 to 10 μm.

このように構成された誘導電動機の軸受装置は潤滑油を
用いないで、回転子（２）を回転させた場合、回転子（
２）の回転軸（６）と軸受装置（４）の接触面（７）と
の間に摩擦熱が発生する。この摩擦熱はセラミックス部
（５）の反接触面側に設けられた金属部（９）へ伝わり
、この金属部（９）から外部へ放熱するものである。In the bearing device of the induction motor configured in this way, when the rotor (2) is rotated without using lubricating oil, the rotor (2)
Frictional heat is generated between the rotating shaft (6) of 2) and the contact surface (7) of the bearing device (4). This frictional heat is transmitted to the metal part (9) provided on the side opposite to the contact surface of the ceramic part (5), and is radiated to the outside from this metal part (9).

また、回転軸（６）とセラミックス部（５）とが接触す
る接触面（７）には螺旋状忙溝（８）が設けてあり、こ
の溝（８）で接触面（７）に発生した摩擦熱の一部を軸
受装置（４）の外部へ放熱している。またこの溝（８）
Ｋは回転軸（６１と接触面（刀との間に生じた摩耗粉を
収納することができる。すなわち摩耗粉で接触面（力に
傷が発生するのを抑制して軸受装置の長寿命化を図れる
ものである。In addition, a spiral groove (8) is provided on the contact surface (7) where the rotating shaft (6) and the ceramic part (5) come into contact, and this groove (8) prevents the occurrence of damage on the contact surface (7). A part of the frictional heat is radiated to the outside of the bearing device (4). Also this groove (8)
K can store the abrasion powder generated between the rotating shaft (61) and the contact surface (knife). In other words, the abrasion powder can suppress the occurrence of scratches on the contact surface (force) and extend the life of the bearing device. It is possible to aim for

尚、上記のような誘導電動機を初期駆動させる時は、回
転軸（６）やセラミックス部（５）の接触面（７）の真
円度などの加工精度により摩擦係数の増加があるが、こ
れはテフロンスプレー等の潤滑材を用いてなじませれば
解消させることができる。When initially driving the induction motor as described above, the coefficient of friction increases due to machining accuracy such as the roundness of the rotating shaft (6) and the contact surface (7) of the ceramic part (5). This can be resolved by using a lubricant such as Teflon spray to spread it out.

（へ）発明の効果 本発明の軸受装置は回転軸との接触面ＫＳｉ化合物を用
いるセラミックス軸受において、この接触面に溝を有す
るセラミックス部と、このセラミックス部の反接触面側
忙接合する金属部とを備えたので、接触面に潤滑油を用
いなくとも軸受けの焼付けを抑制することができる。す
なわち回転軸との接触面にセラミックスを用いたので接
触面九発生する摩擦熱に対する耐熱性が向上している。(F) Effects of the Invention The bearing device of the present invention is a ceramic bearing using a KSi compound on the contact surface with a rotating shaft, and includes a ceramic portion having a groove on the contact surface and a metal portion on the side opposite to the contact surface of the ceramic portion. Therefore, it is possible to suppress seizure of the bearing without using lubricating oil on the contact surface. That is, since ceramics are used for the contact surface with the rotating shaft, the heat resistance against the frictional heat generated at the contact surface is improved.

また接触面に設けた溝で接触面に生じる摩擦熱の一部を
放熱すると同時に接触面に生じた摩耗粉を収納でき、こ
の摩耗粉による接触面の劣化を抑制できる。さらに接触
面で発生した摩擦熱は金属部を介して外部へ効率よ（発
散させることができ、かつ外部からの衝撃に対して補強
することができ軸受装置の破損を防止することができる
。Further, the grooves provided on the contact surface can dissipate part of the frictional heat generated on the contact surface and at the same time accommodate the abrasion powder generated on the contact surface, thereby suppressing deterioration of the contact surface due to this abrasion powder. Furthermore, the frictional heat generated at the contact surface can be efficiently dissipated to the outside through the metal part, and the bearing device can be reinforced against external impact, thereby preventing damage to the bearing device.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明の実施例を示す断面図、第２図は第１図
の軸受装置の拡大断面図、第３図は第２図の」■−■断
面図である。 （５）・・・セラミックス部、　（６）・・・回転軸、
　（７）・・・接触面、　（８）・・・溝、　（９）・
・・金属部。 出願人　三洋電機株式会社　外１名 代理人　弁理士　佐　野　靜　夫FIG. 1 is a sectional view showing an embodiment of the present invention, FIG. 2 is an enlarged sectional view of the bearing device shown in FIG. 1, and FIG. (5)... Ceramic part, (6)... Rotating shaft,
(7)...Contact surface, (8)...Groove, (9)...
...Metal part. Applicant: Sanyo Electric Co., Ltd. and 1 other representative: Patent attorney: Shizuo Sano

Claims (1)

【特許請求の範囲】[Claims] １）回転軸との接触面にＳｉ化合物を用いるセラミック
ス軸受において、この接触面に溝を有するセラミックス
部と、このセラミックス部の反接触面側忙接合する金属
部とを備えたことを特徴とする軸受装置。1) A ceramic bearing using a Si compound on the contact surface with the rotating shaft, characterized by comprising a ceramic portion having a groove on the contact surface, and a metal portion that is connected to the side opposite to the contact surface of the ceramic portion. Bearing device.
JP6249984A 1984-03-29 1984-03-29 Bearing device Pending JPS60205017A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6249984A JPS60205017A (en) 1984-03-29 1984-03-29 Bearing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6249984A JPS60205017A (en) 1984-03-29 1984-03-29 Bearing device

Publications (1)

Publication Number Publication Date
JPS60205017A true JPS60205017A (en) 1985-10-16

Family

ID=13201916

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6249984A Pending JPS60205017A (en) 1984-03-29 1984-03-29 Bearing device

Country Status (1)

Country Link
JP (1) JPS60205017A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0346855A2 (en) * 1988-06-15 1989-12-20 Hitachi, Ltd. Continuous hot-dip plating apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4857034A (en) * 1971-10-02 1973-08-10

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4857034A (en) * 1971-10-02 1973-08-10

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0346855A2 (en) * 1988-06-15 1989-12-20 Hitachi, Ltd. Continuous hot-dip plating apparatus
US5072689A (en) * 1988-06-15 1991-12-17 Hitachi, Ltd. Continuous hot-dip plating apparatus

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