JP2006058226A - Temperature sensor and temperature-sensor equipped bearing device - Google Patents

Temperature sensor and temperature-sensor equipped bearing device Download PDF

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JP2006058226A
JP2006058226A JP2004242552A JP2004242552A JP2006058226A JP 2006058226 A JP2006058226 A JP 2006058226A JP 2004242552 A JP2004242552 A JP 2004242552A JP 2004242552 A JP2004242552 A JP 2004242552A JP 2006058226 A JP2006058226 A JP 2006058226A
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Prior art keywords
temperature
temperature sensor
sensor
bearing
bearing device
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Koichi Morita
耕一 森田
Hiroshi Nakao
宏志 中尾
Ikunori Sakatani
郁紀 坂谷
Katsutoshi Matsuoka
勝年 松岡
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NSK Ltd
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NSK Ltd
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    • 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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/52—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
    • F16C19/525—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions related to temperature and heat, e.g. insulation
    • 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
    • F16C2326/00—Articles relating to transporting
    • F16C2326/10—Railway vehicles
    • 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
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/042—Housings for rolling element bearings for rotary movement

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  • Measuring Temperature Or Quantity Of Heat (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a temperature sensor which detects the temperature of a bearing device, a mechanism with high precision and a temperature-sensor-equipped bearing device. <P>SOLUTION: The temperature-sensor-equipped bearing device 10 includes the temperature sensor 14 for measuring the temperature of the bearing device, and at least a part of the temperature sensor 14 is embedded in a member 12, to which the temperature sensor 14 has been attached. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、温度センサ及び温度センサ付軸受装置に関するものであり、特に、軸受装置や機械装置等の温度を測定して、軸受の焼付きや機械装置の異常を検出する温度センサ及び温度センサ付軸受装置に関するものである。   TECHNICAL FIELD The present invention relates to a temperature sensor and a bearing device with a temperature sensor, and in particular, with a temperature sensor and a temperature sensor for measuring seizure of a bearing or abnormality of a mechanical device by measuring the temperature of the bearing device or the mechanical device. The present invention relates to a bearing device.

従来、鉄道車両や自動車等の車軸を支持する軸受装置や機械設備等では、温度センサを用いて軸受装置や機械設備等の温度を測定して、軸受の焼付きや機械装置の異常を検出することが知られている。これら軸受装置や機械設備の温度を検出する温度センサを備えた温度センサ付軸受装置が種々提案されている（例えば、特許文献１〜３参照。）。   Conventionally, in bearing devices and mechanical equipment that support axles of railway vehicles and automobiles, the temperature of the bearing device and mechanical equipment is measured using a temperature sensor to detect bearing seizure and mechanical equipment abnormalities. It is known. Various types of bearing devices with a temperature sensor including a temperature sensor for detecting the temperature of these bearing devices and mechanical equipment have been proposed (for example, see Patent Documents 1 to 3).

例えば、図４に示された従来の温度センサ付軸受装置１００では、図示しない車輪を固定した車軸１０１を軸箱１０２に対して回転可能に支持するための軸受１０３が、車軸１０１と軸箱１０２との間に配置されている。そして、温度センサ１０４が軸箱１０２の外表面に設置され、温度センサ１０４内部に内蔵された図示しない温度検出素子によって温度を測定し、軸受１０３の温度を推定していた。
特表２００２−５４２９７３号公報 特開２００２−１３０２６３号公報 特開２００３−３０７２３０号公報 For example, in the conventional bearing device 100 with a temperature sensor shown in FIG. 4, a bearing 103 for rotatably supporting an axle 101 on which a wheel (not shown) is fixed with respect to the axle box 102 is provided with the axle 101 and the axle box 102. It is arranged between. Then, the temperature sensor 104 is installed on the outer surface of the axle box 102, and the temperature is measured by a temperature detection element (not shown) built in the temperature sensor 104 to estimate the temperature of the bearing 103.
JP-T-2002-542773 JP 2002-130263 A JP 2003-307230 A

ところで、図４に示された従来の温度センサ付軸受装置１００では、温度センサ１０４は軸箱１０２の外表面と底面のみで接触している。このため、温度センサ１０４の側面部からの放熱により、温度検出素子の温度は、軸箱１０２の外表面と差が大きくなり、その結果、軸受１０３の温度との差も大きくなって、軸受１０３の温度を精度よく測定することが困難であった。   By the way, in the conventional bearing device 100 with a temperature sensor shown in FIG. 4, the temperature sensor 104 is in contact only with the outer surface and the bottom surface of the axle box 102. For this reason, due to heat radiation from the side surface portion of the temperature sensor 104, the temperature of the temperature detection element is greatly different from that of the outer surface of the axle box 102. As a result, the difference from the temperature of the bearing 103 is also increased. It was difficult to accurately measure the temperature.

本発明は、上述したような事情に鑑みてなされたものであり、その目的は、軸受装置や機械装置等の温度を精度よく検出することができる温度センサ及び温度センサ付軸受装置を提供することである。   The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a temperature sensor and a bearing device with a temperature sensor that can accurately detect the temperature of a bearing device, a mechanical device, or the like. It is.

本発明の上記目的は、下記の構成により達成される。
（１） 軸受装置の温度を測定する温度センサを備えた温度センサ付軸受装置であって、
前記温度センサの少なくとも一部は、前記温度センサが取り付けられる部材内に埋設されていることを特徴とする温度センサ付軸受装置。
（２） 前記温度センサはセンサ筐体に取り付けられたプリント基板上に固定される温度検出素子を有し、少なくとも該温度検出素子は、前記部材内に埋没されていることを特徴とする（１）に記載の温度センサ付軸受装置。
（３） ハウジング内に装着される軸受と、該軸受の温度を測定する温度センサとを備えた温度センサ付軸受装置であって、
前記ハウジングには座ぐり部が設けられ、前記温度センサの少なくとも一部は該座ぐり部に埋設されていることを特徴とする温度センサ付軸受装置。
（４） 前記軸受は鉄道車両用車軸軸受であることを特徴とする（１）〜（３）のいずれかに記載の温度センサ付軸受装置。
（５） 前記軸受は自動車用車軸軸受であることを特徴とする（１）〜（３）のいずれかに記載の温度センサ付軸受装置。
（６） センサ筐体内に温度検出素子を備えた温度センサであって、
前記センサ筐体の側面部は断熱されていることを特徴とする温度センサ。
（７） 前記センサ筐体の側面部には断熱材が塗布されていることを特徴とする（６）に記載の温度センサ。
（８） 前記センサ筐体の側面部には断熱材が貼り付けられていることを特徴とする（６）に記載の温度センサ。
（９） 前記センサ筐体の底面部は、前記センサ筐体が取り付けられる部材に密着されていることを特徴とする（６）〜（８）のいずれかに記載の温度センサ。 The above object of the present invention can be achieved by the following constitution.
(1) A bearing device with a temperature sensor provided with a temperature sensor for measuring the temperature of the bearing device,
At least a part of the temperature sensor is embedded in a member to which the temperature sensor is attached.
(2) The temperature sensor includes a temperature detection element fixed on a printed circuit board attached to a sensor housing, and at least the temperature detection element is embedded in the member (1) ) Bearing device with temperature sensor.
(3) A bearing device with a temperature sensor comprising a bearing mounted in a housing and a temperature sensor for measuring the temperature of the bearing,
The housing is provided with a counterbore part, and at least a part of the temperature sensor is embedded in the counterbore part.
(4) The bearing device with a temperature sensor according to any one of (1) to (3), wherein the bearing is an axle bearing for a railway vehicle.
(5) The bearing device with a temperature sensor according to any one of (1) to (3), wherein the bearing is an automobile axle bearing.
(6) A temperature sensor having a temperature detection element in the sensor housing,
A temperature sensor characterized in that a side surface portion of the sensor casing is thermally insulated.
(7) The temperature sensor according to (6), wherein a heat insulating material is applied to a side surface portion of the sensor casing.
(8) The temperature sensor according to (6), wherein a heat insulating material is attached to a side surface portion of the sensor casing.
(9) The temperature sensor according to any one of (6) to (8), wherein a bottom surface portion of the sensor casing is in close contact with a member to which the sensor casing is attached.

本発明の温度センサ付軸受装置によれば、温度センサの少なくとも一部は、温度センサが取り付けられる部材内に埋設されているので、該部材から温度センサへの熱伝導性を向上させ、温度センサの温度を該部材の温度に近付け、軸受装置の温度を精度良く検出することができる。特に、鉄道車両や自動車用の車軸軸受のハウジング等、温度センサが走行中に風で冷却されるものにおいては、温度センサの底部および底部の周囲の冷却が抑制され、温度検出誤差の発生を防止することができる。   According to the bearing device with a temperature sensor of the present invention, since at least a part of the temperature sensor is embedded in the member to which the temperature sensor is attached, the thermal conductivity from the member to the temperature sensor is improved. The temperature of the bearing device can be brought close to the temperature of the member, and the temperature of the bearing device can be detected with high accuracy. In particular, in the case where the temperature sensor is cooled by wind while running, such as a housing for a railcar or an axle bearing for an automobile, cooling of the bottom of the temperature sensor and the surrounding area of the bottom is suppressed to prevent occurrence of a temperature detection error. can do.

また、本発明の温度センサによれば、センサ筐体の側面部は断熱されているので、センサ筐体の側面部からの放熱が防止され、温度センサ内部に内蔵されている温度検出素子の温度をセンサ筐体が取り付けられる部材の表面の温度に近付け、軸受装置や機械装置等の温度を精度良く検出することができる。   Further, according to the temperature sensor of the present invention, since the side surface portion of the sensor housing is thermally insulated, heat radiation from the side surface portion of the sensor housing is prevented, and the temperature of the temperature detection element built in the temperature sensor is prevented. Can be brought close to the temperature of the surface of the member to which the sensor housing is attached, and the temperature of the bearing device, the mechanical device, or the like can be detected with high accuracy.

以下、本発明の各実施形態に係る温度センサ及び温度センサ付軸受装置について図面を参照して説明する。   Hereinafter, a temperature sensor and a bearing device with a temperature sensor according to each embodiment of the present invention will be described with reference to the drawings.

（第１実施形態）
図１は、本発明の第１実施形態である温度センサ付軸受装置を説明するための正面図であり、図２（ａ）は、図１の要部拡大部分断面図であり、図２（ｂ）は、図２（ａ）の温度センサのII方向から見た上面図である。 (First embodiment)
FIG. 1 is a front view for explaining a bearing device with a temperature sensor according to a first embodiment of the present invention. FIG. 2 (a) is an enlarged partial sectional view of a main part of FIG. FIG. 2B is a top view of the temperature sensor of FIG.

図１に示されるように、第１実施形態の温度センサ付軸受装置１０は、鉄道車両用軸受装置であり、図示しない車輪を固定した車軸１１を、ハウジングである軸箱１２に対して回転可能に支持するための軸受１３が、車軸１１と軸箱１２との間に配置されている。   As shown in FIG. 1, the bearing device 10 with a temperature sensor of the first embodiment is a bearing device for a railway vehicle, and an axle 11 to which a wheel (not shown) is fixed can be rotated with respect to an axle box 12 that is a housing. A bearing 13 is provided between the axle 11 and the axle box 12.

軸受１３には、種々の部材の重量等によるラジアル荷重と任意のアキシアル荷重とが負荷される。なお、軸受１３は、複列円すいころ軸受、複列の深溝玉軸受、アンギュラ玉軸受、円筒ころ軸受等、公知の各種転がり軸受を使用することができ、転がり軸受の具体構成は図示省略する。   The bearing 13 is loaded with a radial load and an arbitrary axial load due to the weight of various members. As the bearing 13, various known rolling bearings such as a double row tapered roller bearing, a double row deep groove ball bearing, an angular ball bearing, and a cylindrical roller bearing can be used, and a specific configuration of the rolling bearing is not illustrated.

軸受１３の負荷圏側に位置する、即ち、車軸１１の中心Oを通過する水平面Ｐより上方に位置する軸箱１２の側部表面には、座ぐり部１２ａが加工されており、この座ぐり部１２ａには温度センサ１４の少なくとも一部が埋設されている。   A counterbore 12a is machined on the side surface of the axle box 12 located on the load zone side of the bearing 13, that is, above the horizontal plane P passing through the center O of the axle 11. At least a part of the temperature sensor 14 is embedded in the part 12a.

図２に示すように、温度センサ１４は、アルミニウム合金等の軸箱１２と同一材料からなるセンサ筐体１５、センサ筐体１５の開口部を密閉するカバー部材１６、センサ筐体１５の底部側に取り付けられたプリント基板１７、プリント基板１７上に固定された温度検出素子１８、及び、温度検出素子１８から出力された測定信号を外部に伝送するため、センサ筐体１５に形成されたケーブル取り出し部１５ａから外部へ引き出される信号ケーブル１９を備える。なお、軸箱１２の材質は、アルミニウム合金に限定されるものでなく、鉄製であっても良い。また、センサ筐体１５の材質もアルミニウム合金に限定されず、ステンレス鋼等であっても良い。しかしながら、アルミニウム合金製のセンサ筐体の方が、熱伝導性が良いので好ましい。   As shown in FIG. 2, the temperature sensor 14 includes a sensor housing 15 made of the same material as the axle box 12 such as an aluminum alloy, a cover member 16 that seals an opening of the sensor housing 15, and a bottom side of the sensor housing 15. A printed circuit board 17 attached to the printed circuit board 17, a temperature detection element 18 fixed on the printed circuit board 17, and a cable formed in the sensor housing 15 for transmitting a measurement signal output from the temperature detection element 18 to the outside A signal cable 19 is provided from the portion 15a to the outside. The material of the axle box 12 is not limited to the aluminum alloy, and may be made of iron. The material of the sensor housing 15 is not limited to aluminum alloy, and may be stainless steel or the like. However, an aluminum alloy sensor housing is preferred because of its good thermal conductivity.

軸箱１２に形成された座ぐり部１２ａの深さは、センサ筐体１５内に内蔵された温度検出素子１８が軸箱１２内に埋没される、即ち、座ぐり部１２ａの開口面Ｓよりも軸箱１２側に位置するように設定されている。そして、センサ筐体１５は、軸箱１２に形成された座ぐり部１２ａ内に底部１５ｂ及び底部１５ｂの周囲を埋設させた状態で、カバー部材１６と共に２本のボルト２０，２０によって軸箱１２に固定される。   The depth of the spot facing portion 12a formed in the axle box 12 is such that the temperature detection element 18 built in the sensor housing 15 is buried in the axle box 12, that is, from the opening surface S of the spot facing portion 12a. Is also set to be located on the axle box 12 side. Then, the sensor housing 15 has the bottom 15b and the periphery of the bottom 15b embedded in a counterbore 12a formed in the axle box 12, and the axle box 12 by the two bolts 20 and 20 together with the cover member 16. Fixed to.

また、座ぐり部１２ａとセンサ筐体１５の周囲との間の隙間には、熱伝導性の良いシリコン樹脂、シリコンペーストや熱伝導性の良いエポキシ樹脂等の樹脂２１が充填されている。   In addition, a gap between the spot facing portion 12a and the periphery of the sensor housing 15 is filled with a resin 21 such as a silicon resin having good thermal conductivity, a silicon paste, or an epoxy resin having good thermal conductivity.

従って、本実施形態の温度センサ付軸受装置１０によれば、温度センサ１４の少なくとも一部が軸箱１２内に埋設されているので、軸箱１２からの温度センサ１４への熱伝導性を向上させ、温度センサ１４の温度を軸箱１２の温度に近付けられる。これにより、プリント基板１７上の温度検出素子１８の温度が軸箱１２及び軸受１３の温度に近づき、軸受１３の温度を精度良く検出することができる。特に、鉄道車両の走行中にセンサ筐体１５に風があたっても、センサ筐体１５の底部１５ｂ及び底部１５ｂの周囲が軸箱１２に埋設されているので、センサ筐体１５の底部１５ｂおよび底部１５ｂの周囲の冷却が抑制され、温度検出誤差の発生を防止することができる。   Therefore, according to the temperature sensor bearing device 10 of the present embodiment, since at least a part of the temperature sensor 14 is embedded in the axle box 12, the thermal conductivity from the axle box 12 to the temperature sensor 14 is improved. The temperature of the temperature sensor 14 is brought close to the temperature of the axle box 12. Thereby, the temperature of the temperature detection element 18 on the printed circuit board 17 approaches the temperature of the axle box 12 and the bearing 13, and the temperature of the bearing 13 can be detected with high accuracy. In particular, even if the sensor casing 15 is exposed to wind during travel of the railway vehicle, the bottom 15b of the sensor casing 15 and the periphery of the bottom 15b are embedded in the axle box 12, so that the bottom 15b of the sensor casing 15 and Cooling around the bottom 15b is suppressed, and temperature detection errors can be prevented.

また、温度検出素子１８が軸箱１２内に埋没されているので、温度検出素子１８の温度が軸箱１２の温度にほぼ等しくなり、軸受１３の温度をより精度良く検出することができる。なお、軸箱１２のスペースに余裕がある場合には、センサ筐体１５全体を軸箱１２に埋設することで、さらに軸受１３の温度が精度良く検出することができる。   Further, since the temperature detection element 18 is buried in the axle box 12, the temperature of the temperature detection element 18 becomes substantially equal to the temperature of the axle box 12, and the temperature of the bearing 13 can be detected with higher accuracy. If the space of the axle box 12 is sufficient, the temperature of the bearing 13 can be detected with higher accuracy by embedding the entire sensor housing 15 in the axle box 12.

また、座ぐり部１２ａとセンサ筐体１５の周囲との間の隙間はできるだけ小さいほうが望ましいが、座ぐり部１２ａとセンサ筐体１５の周囲に隙間を有する場合には、本実施形態のように、この隙間に熱伝導性の良いシリコン樹脂等、熱伝導性の良い樹脂２１を充填することで、熱伝導性を向上することができる。   Further, it is desirable that the gap between the spot facing portion 12a and the periphery of the sensor casing 15 is as small as possible. However, when there is a gap between the spot facing portion 12a and the sensor casing 15, as in the present embodiment. The thermal conductivity can be improved by filling the gap with a resin 21 having a good thermal conductivity such as a silicon resin having a good thermal conductivity.

(第２実施形態)
次に、本発明の第２実施形態における温度センサ及び温度センサ付軸受装置について図３を参照して説明する。なお、第１実施形態と同等部分については同一符号を付して、説明を省略或いは簡略化する。 (Second embodiment)
Next, a temperature sensor and a temperature sensor bearing device according to a second embodiment of the present invention will be described with reference to FIG. In addition, the same code | symbol is attached | subjected about a part equivalent to 1st Embodiment, and description is abbreviate | omitted or simplified.

本実施形態の温度センサ付軸受装置３０では、温度センサ３１は、第１実施形態と同様、センサ筐体１５、カバー部材１６、プリント基板１７、温度検出素子１８、及び、信号ケーブル１９、及び、ボルト２０，２０を備える。本実施形態のセンサ筐体１５では、底部１５ａが軸箱１２の側部表面に密着して配置されており、側面部１５ｃが断熱材３２によって全周に亘って覆われている。断熱材３２は、例えば、ゴム、発泡スチロール、或いは樹脂等からなり、センサ筐体１５の側面部１５ｃに貼り付けられる。なお、樹脂等の断熱材３２は、センサ筐体１５の側面部１５ｃにインサート成形等で射出成形されてもよい。
その他の構成及び作用については、第１実施形態のものと同様である。 In the bearing device 30 with the temperature sensor of the present embodiment, the temperature sensor 31 includes the sensor housing 15, the cover member 16, the printed circuit board 17, the temperature detection element 18, and the signal cable 19, as in the first embodiment. Bolts 20 and 20 are provided. In the sensor housing 15 of the present embodiment, the bottom portion 15a is disposed in close contact with the side surface of the axle box 12, and the side surface portion 15c is covered with the heat insulating material 32 over the entire circumference. The heat insulating material 32 is made of, for example, rubber, styrene foam, resin, or the like, and is attached to the side surface portion 15 c of the sensor housing 15. The heat insulating material 32 such as resin may be injection-molded by insert molding or the like on the side surface portion 15 c of the sensor housing 15.
Other configurations and operations are the same as those in the first embodiment.

従って、本実施形態の温度センサ３１によれば、センサ筐体１５内に温度検出素子１８を備え、センサ筐体１５の側面部１５ｃは断熱されているので、センサ筐体１５の側面部１５ｃからの放熱が防止され、温度センサ３１内部に内蔵されている温度検出素子１８の温度を軸箱１２の表面の温度に近付け、軸受１３の温度を精度良く検出することができる。   Therefore, according to the temperature sensor 31 of the present embodiment, the temperature detection element 18 is provided in the sensor housing 15 and the side surface portion 15c of the sensor housing 15 is thermally insulated. Heat dissipation is prevented, and the temperature of the temperature detection element 18 incorporated in the temperature sensor 31 is brought close to the temperature of the surface of the axle box 12 so that the temperature of the bearing 13 can be detected with high accuracy.

なお、本実施形態の変形例として、センサ筐体１５の側面部１５ｂに断熱材３２を吹き付けてコーティングすることで、側面部１５ｂを断熱するようにしてもよい。この場合、塗布される断熱材３２としては、発泡ウレタン、ガラスエポキシ等のプラスチックや熱伝導性の悪いセラミックスが使用される。   As a modification of the present embodiment, the side surface portion 15b may be insulated by spraying and coating the heat insulating material 32 on the side surface portion 15b of the sensor housing 15. In this case, as the heat insulating material 32 to be applied, plastic such as urethane foam or glass epoxy or ceramics having poor thermal conductivity is used.

また、軸箱１２とセンサ筐体１５の底面部１５ｂとの間の密着部には、伝熱性シリコン樹脂やシリコンペースト等を塗布すると熱伝導性を向上することができるので好ましい。
さらに、放熱条件を合わせるため、断熱しないセンサ筐体の上面部、即ち、カバー部材１６は軸箱１２の材質や表面処理に合わせるのが好ましい。 In addition, it is preferable to apply a heat conductive silicon resin, a silicon paste, or the like to the close contact portion between the axle box 12 and the bottom surface portion 15b of the sensor housing 15 because thermal conductivity can be improved.
Furthermore, in order to match the heat radiation conditions, it is preferable that the upper surface portion of the sensor housing that is not thermally insulated, that is, the cover member 16 is matched to the material and surface treatment of the axle box 12.

なお、本発明は、前述した実施形態に限定されるものではなく、適宜、変形、改良等が可能である。
本実施形態では、温度センサ付軸受装置として、鉄道車両用軸受装置を例示したが、自動車用軸受装置にも適用可能である。
また、本発明の温度センサは、プリント基板上に振動検出素子等を搭載するマルチセンサとすることが好ましい。
さらに、本発明は、第１及び第２実施形態の各温度センサ付軸受装置の構成を組み合わせて適用することも可能である。 In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably.
In the present embodiment, the railway vehicle bearing device is exemplified as the temperature sensor-equipped bearing device, but the present invention can also be applied to an automobile bearing device.
Moreover, it is preferable that the temperature sensor of the present invention is a multisensor in which a vibration detection element or the like is mounted on a printed board.
Furthermore, the present invention can also be applied by combining the configurations of the temperature sensor bearing devices of the first and second embodiments.

本発明の第１実施形態である温度センサ付軸受装置を示す正面図である。It is a front view which shows the bearing apparatus with a temperature sensor which is 1st Embodiment of this invention. （ａ）は、図１の要部拡大部分断面図であり、（ｂ）は、（ａ）の温度センサをII方向から見た上面図である。(A) is the principal part expanded partial sectional view of FIG. 1, (b) is the top view which looked at the temperature sensor of (a) from II direction. （ａ）は、本発明の第２実施形態である温度センサ付軸受装置を示す正面図であり、（ｂ）は、（ａ）の温度センサをIII方向から見た上面図である。(A) is a front view which shows the bearing apparatus with a temperature sensor which is 2nd Embodiment of this invention, (b) is the top view which looked at the temperature sensor of (a) from the III direction. 従来の温度センサ付軸受装置を示す正面図である。It is a front view which shows the conventional bearing apparatus with a temperature sensor.

符号の説明Explanation of symbols

１０，３０ 温度センサ付軸受装置
１１ 車軸
１２ 軸箱（ハウジング）
１３ 軸受
１４，３１ 温度センサ
１５ センサ筐体
１７ プリント基板
１８ 温度検出素子
１９ 信号ケーブル
２１ 樹脂
３２ 断熱材 10, 30 Bearing device with temperature sensor 11 Axle 12 Shaft box (housing)
13 Bearings 14 and 31 Temperature sensor 15 Sensor housing 17 Printed circuit board 18 Temperature detection element 19 Signal cable 21 Resin 32 Heat insulating material

Claims (9)

軸受装置の温度を測定する温度センサを備えた温度センサ付軸受装置であって、
前記温度センサの少なくとも一部は、前記温度センサが取り付けられる部材内に埋設されていることを特徴とする温度センサ付軸受装置。 A temperature sensor bearing device having a temperature sensor for measuring the temperature of the bearing device,
At least a part of the temperature sensor is embedded in a member to which the temperature sensor is attached. 前記温度センサはセンサ筐体に取り付けられたプリント基板上に固定される温度検出素子を有し、少なくとも該温度検出素子は、前記部材内に埋没されていることを特徴とする請求項１に記載の温度センサ付軸受装置。   The said temperature sensor has a temperature detection element fixed on the printed circuit board attached to the sensor housing | casing, At least this temperature detection element is embed | buried in the said member. Bearing device with temperature sensor. ハウジング内に装着される軸受と、該軸受の温度を測定する温度センサとを備えた温度センサ付軸受装置であって、
前記ハウジングには座ぐり部が設けられ、前記温度センサの少なくとも一部は該座ぐり部に埋設されていることを特徴とする温度センサ付軸受装置。 A bearing device with a temperature sensor comprising a bearing mounted in a housing and a temperature sensor for measuring the temperature of the bearing,
The housing is provided with a counterbore part, and at least a part of the temperature sensor is embedded in the counterbore part. 前記軸受は鉄道車両用車軸軸受であることを特徴とする請求項１〜３のいずれかに記載の温度センサ付軸受装置。   The bearing device with a temperature sensor according to claim 1, wherein the bearing is an axle bearing for a railway vehicle. 前記軸受は自動車用車軸軸受であることを特徴とする請求項１〜３のいずれかに記載の温度センサ付軸受装置。   The bearing device with a temperature sensor according to claim 1, wherein the bearing is an axle bearing for an automobile. センサ筐体内に温度検出素子を備えた温度センサであって、
前記センサ筐体の側面部は断熱されていることを特徴とする温度センサ。 A temperature sensor having a temperature detection element in a sensor housing,
A temperature sensor characterized in that a side surface portion of the sensor casing is thermally insulated. 前記センサ筐体の側面部には断熱材が塗布されていることを特徴とする請求項６に記載の温度センサ。   The temperature sensor according to claim 6, wherein a heat insulating material is applied to a side surface portion of the sensor casing. 前記センサ筐体の側面部には断熱材が貼り付けられていることを特徴とする請求項６に記載の温度センサ。   The temperature sensor according to claim 6, wherein a heat insulating material is attached to a side surface portion of the sensor casing. 前記センサ筐体の底面部は、前記センサ筐体が取り付けられる部材に密着されていることを特徴とする請求項６〜８のいずれかに記載の温度センサ。   The temperature sensor according to any one of claims 6 to 8, wherein the bottom surface of the sensor casing is in close contact with a member to which the sensor casing is attached.
JP2004242552A 2004-08-23 2004-08-23 Temperature sensor and temperature-sensor equipped bearing device Pending JP2006058226A (en)

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JP2008002883A (en) * 2006-06-21 2008-01-10 Nsk Ltd Structure and method for installing bearing sensor
WO2008113330A1 (en) * 2007-03-21 2008-09-25 Schaeffler Kg Device for monitoring the operating temperature of a bearing
DE102009048300A1 (en) 2009-10-05 2011-04-07 Schaeffler Technologies Gmbh & Co. Kg Sensor for detecting vibrations of bearing, has energy storage provided for intermediate storage of energy that is provided from piezoelectric sensor, where energy storage is unloaded by display element
DE102009048301A1 (en) 2009-10-05 2011-04-07 Schaeffler Technologies Gmbh & Co. Kg Sensor for detecting vibrations of bearing, has display element comprising electro-optical component controlled by electric impulse that is delivered by piezoelectric sensor, where component is provided with electrochromic coating
WO2011083756A1 (en) * 2010-01-05 2011-07-14 ダイキン工業株式会社 Refrigeration device

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JP2008002883A (en) * 2006-06-21 2008-01-10 Nsk Ltd Structure and method for installing bearing sensor
WO2008113330A1 (en) * 2007-03-21 2008-09-25 Schaeffler Kg Device for monitoring the operating temperature of a bearing
DE102009048300A1 (en) 2009-10-05 2011-04-07 Schaeffler Technologies Gmbh & Co. Kg Sensor for detecting vibrations of bearing, has energy storage provided for intermediate storage of energy that is provided from piezoelectric sensor, where energy storage is unloaded by display element
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