JP2004297958A - Structure for mounting temperature sensor of electric motor - Google Patents

Structure for mounting temperature sensor of electric motor Download PDF

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Publication number
JP2004297958A
JP2004297958A JP2003089250A JP2003089250A JP2004297958A JP 2004297958 A JP2004297958 A JP 2004297958A JP 2003089250 A JP2003089250 A JP 2003089250A JP 2003089250 A JP2003089250 A JP 2003089250A JP 2004297958 A JP2004297958 A JP 2004297958A
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Japan
Prior art keywords
temperature sensor
temperature
sensor
electric motor
stator
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
JP2003089250A
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Japanese (ja)
Inventor
Shinji Maruyama
伸二 丸山
Takafumi Nakamura
貴文 中村
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.)
Toyota Industries Corp
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Toyota Industries Corp
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 Toyota Industries Corp filed Critical Toyota Industries Corp
Priority to JP2003089250A priority Critical patent/JP2004297958A/en
Publication of JP2004297958A publication Critical patent/JP2004297958A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure for mounting temperature sensor of electric motor that makes it easy to replace a temperature sensor, while making it possible to detect coil temperature accurately. <P>SOLUTION: The temperature of a stator coil 8 can be detected accurately with a temperature sensor 4, because the temperature of the stator coil 8 mounted in the slot 7 of a stator 2 in an electric motor 1 is conducted to the sensor 4 via a temperature transmission pin 6, whose surrounding portion that comes into contact with air is covered by an insulating member without causing the temperature to drop. When a failure occurs to the sensor 4; the sensor 4 is removed from a mounting hole 9 provided in a frame 5, a new temperature sensor 4 is simply passed through the mounting hole 9, and an axial part 4a of one end side of the sensor 4 is just fitted into a fitting hole 10 of the temperature transmission pin 6, which means it is possible to replace only the temperature sensor. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、電動機の温度センサ取付け構造に関する。
【0002】
【従来の技術】
従来、電動機の温度センサ取付け構造として、ロータの温度を検出する温度センサを備える電動機において、温度センサをステータコアのスロット開口部に取り付けたものが知られている(例えば、特許文献1の図1,図2参照)。
【0003】
この従来技術では、ステータコアのスロット内にステータコイルを装着した後、ロータ温度検出用の温度センサは、ステータコアのスロット開口部に入れられ、合成樹脂または接着剤のような固定剤の流動状のものを流し込んで、固化させて固定される。
【0004】
【特許文献1】
実開平2−65081号公報
【0005】
【発明が解決しようとする課題】
ところで、上記従来技術では、温度センサは、ステータコアのスロット開口部に合成樹脂または接着剤で固定されているので、温度センサの故障時に温度センサを単品で交換することができず、温度センサの交換が難しいという問題があった。そのため、温度センサの故障時には、例えば車両などに搭載されたモータアセンブリから電動機を取り外し、電動機を分解して、温度センサが固定されているステータコアごと交換するという煩雑な作業が必要であった。これは、温度センサをステータコアのスロット開口部から取り外すときに、ステータコイルに傷を付けるおそれがあるからである。
【0006】
本発明の目的は、正確なコイル温度の検出を可能にしつつ、温度センサの交換を容易にした電動機の温度センサ取付け構造を提供することにある。
【0007】
【課題を解決するための手段】
そこで、上記目的を達成するために請求項1に記載の発明では、温度センサを備える電動機の温度センサ取付け構造において、熱伝導率の高い素材で作られた温度伝達ピンの一端側がステータのスロット内に或いは該スロット内に装着されるステータコイルに固定される。温度センサはその一端側が内部に突出するようにフレーム或いはカバーに設けた取付け孔に通して取り外し可能に固定される。温度伝達ピンの他端側に温度センサの一端側が嵌合し、また、温度伝達ピンの空気に触れる部分の周囲は断熱材で被覆されている。
【0008】
こうした構成により、ステータのスロット内に装着されるステータコイルの温度は、空気に触れる部分の周囲が断熱材で被覆された温度伝達ピンを介して温度低下することなく温度センサに伝わるので、ステータコイルの温度を温度センサで正確に検出できる。また、温度センサの故障時には、温度センサをフレーム或いはカバーに設けた取付け孔から外し、新しい温度センサを取付け孔に通して温度センサの一端側を温度伝達ピンの他端側に嵌合するだけでよい。つまり、温度センサ単品での交換が可能になる。したがって、正確なコイル温度の検出を可能にしつつ、温度センサの交換が容易になる。
【0009】
なお、ここにいう、「温度伝達ピン」は、CuやAlなどの熱伝導率の高い素材で作られ、ステータコイルの温度を効率良く温度センサに伝えることができる部材をいう。
【0010】
【発明の実施の形態】
以下、本発明に係る電動機の温度センサ取付け構造を具体化した一実施形態を図1及び図2に基づいて説明する。
【0011】
図1は、一実施形態に係る電動機の温度センサ取付け構造を説明するために、電動機の一部を断面で示している。この電動機は、例えば三相誘導電動機である。
【0012】
図1に示す電動機1は、ステータ2と、ロータ3と、温度センサ4と、フレーム5と、温度伝達ピン6とを備えている。
図1及び図2に示す温度伝達ピン6は、熱伝導率の高い素材、例えばCu、Alなどで作られている。温度伝達ピン6の一側半分(一端側)6aは、ステータ2のスロット7内にワニスなどで固定されている。このスロット7内には、ステータコイル8が装着されている。
【0013】
温度センサ4は、その一端側の軸部4a(一端側)が電動機1の内部に突出するようにフレーム5に設けた取付け孔9に通して取り外し可能に固定される。そのため、本例の温度センサ4には、その中央部外周に固定用凸部4bが形成されている。温度センサ4を取付け孔9に通すと、温度センサ4の他端側の軸部4cが取付け孔9に圧入嵌合した状態で、固定用凸部4bがフレーム5の内面に係止されて、温度センサ4がフレーム5に抜け止め固定されるようになっている。
【0014】
また、温度伝達ピン6の他端側6bには、嵌合穴10が形成されており、この嵌合穴10に温度センサ4の一端側の軸部4aが嵌合可能になっている。
また、温度伝達ピン6の空気に触れる部分の周囲全体は、断熱材11で被覆されている。この断熱材11は、例えば、断熱効果の高い樹脂で形成されている。そして、ステータコイル8の温度は、空気に触れる部分の周囲が断熱材11で被覆された温度伝達ピン6を介して温度センサ4に伝わるので、ステータコイル8の温度を温度センサ4で測定できる。温度センサ4で測定されたステータコイル8の温度は、ハーネスなどで構成される信号線12を介して電動機制御用のECU(図示省略)などに送られるようになっている。
【0015】
温度センサ4が故障したとき、図1に示す取付け位置にある温度センサ4を強く引き抜くことで、温度センサ4を電動機1のフレーム5から取り外すことができる。また、新しい温度センサ4を電動機1のフレーム5に取り付ける際には、温度センサ4をフレーム5の方へ強く押し付ける。これにより、温度センサ4の軸部4cが取付け孔9に圧入嵌合した状態で、固定用凸部4bがフレーム5の内面に係止されて、温度センサ4がフレーム5に抜け止め固定される。
【0016】
以上のように構成された一実施形態によれば、以下の作用効果を奏する。
(イ)電動機1におけるステータ2のスロット7内に装着されるステータコイル8の温度は、空気に触れる部分の周囲が断熱材11で被覆された温度伝達ピン6を介して温度低下することなく温度センサ4に伝わるので、ステータコイル8の温度を温度センサ4で正確に検出できる。また、温度センサ4の故障時には、温度センサ4をフレーム5に設けた取付け孔9から外し、新しい温度センサ4を取付け孔9に通して温度センサ4の一端側の軸部4aを温度伝達ピン6の嵌合穴10に嵌合するだけでよい。つまり、温度センサ単品での交換が可能になる。したがって、正確なコイル温度の検出を可能にしつつ、温度センサの交換が容易になる。
【0017】
(ロ)温度センサ単品での交換が可能になるので、温度センサ4の故障時に、上記従来技術のように、車両などに搭載されたモータアセンブリから電動機1を取り外し、電動機1を分解して、温度センサ4が固定されているステータコア(ステータ7)ごと交換するという煩雑な作業が不要に成る。したがって、車両などに搭載されるモータアセンブリの一部を取り外すなどの煩雑な作業を行わずに、温度センサ4を交換することができる。
【0018】
(ハ)温度センサ4の故障時に、温度センサ単品での交換が可能になるので、上記従来技術のようにステータコア(ステータ2)ごと交換する場合よりも部品交換に伴う費用を安くすることができる。
【0019】
[ 変形例]
なお、この発明は以下のように変更して具体化することもできる。
・上記一実施形態では、温度伝達ピン6の一側半分(一端側)6aは、ステータ2のスロット7内にワニスなどで固定されているが、その一側半分6aを、スロット7内に装着されるステータコイル8にワニスなどで固定するようにしてもよい。この場合、その一側半分6aの取付け位置は、ステータコイル8内であればどこでも良い。
【0020】
・上記一実施形態では、温度センサ4は、その一端側の軸部4a(一端側)が電動機1の内部に突出するようにフレーム5に設けた取付け孔9に通して取り外し可能に固定されるが、本発明はこのような構成に限定されない。例えば、電動機1がフレームレスの電動機である場合には、エンドカバー(図示省略)に取付け孔を設けて、この取付け孔に温度センサ4を取り外し可能に固定する構成にも本発明は適用される。
【0021】
・上記一実施形態では、温度センサ4をフレーム5の方へ強く押し付けることで、温度センサ4の軸部4cが取付け孔9に圧入嵌合した状態で、固定用凸部4bがフレーム5の内面に係止されて、温度センサ4がフレーム5に抜け止め固定されるが、本発明はこのような固定構造に限定されない。例えば、温度センサ4に固定用凸部4bを設ける代わりに、温度センサ4の軸部外周に雄ねじ部を形成するとともに、取付け孔9に雌ねじ部を形成し、温度センサ4を取付け孔9にねじ込んで固定する構造にも本発明は適用される。
【0022】
【発明の効果】
以上詳述したように本発明によれば、ステータのスロット内に装着されるステータコイルの温度は、空気に触れる部分の周囲が断熱材で被覆された温度伝達ピンを介して温度低下することなく温度センサに伝わるので、ステータコイルの温度を温度センサで正確に検出できる。また、温度センサの故障時には、温度センサをフレーム或いはカバーに設けた取付け孔から外し、新しい温度センサを取付け孔に通して温度センサの一端側を温度伝達ピンの他端側に嵌合するだけでよい。つまり、温度センサ単品での交換が可能になる。したがって、正確なコイル温度の検出を可能にしつつ、温度センサの交換が容易になる。
【図面の簡単な説明】
【図1】一実施形態における電動機の一部を示す断面図。
【図2】図1の温度伝達ピンを示す拡大図。
【符号の説明】
1…電動機、2…ステータ、4…温度センサ、5…フレーム、6…温度伝達ピン、6b…他端側、7…スロット、8…ステータコイル、9…取付け孔、11…断熱材。
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a temperature sensor mounting structure for an electric motor.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as a temperature sensor mounting structure of a motor, there has been known a motor having a temperature sensor for detecting a temperature of a rotor, in which the temperature sensor is mounted on a slot opening of a stator core (for example, FIG. (See FIG. 2).
[0003]
In this prior art, after a stator coil is mounted in a slot of a stator core, a temperature sensor for detecting a rotor temperature is inserted into a slot opening of the stator core, and is a fluid type of a fixing agent such as a synthetic resin or an adhesive. , And solidified and fixed.
[0004]
[Patent Document 1]
JP-A-2-65081
[Problems to be solved by the invention]
By the way, in the above-mentioned conventional technology, the temperature sensor is fixed to the slot opening of the stator core with a synthetic resin or an adhesive. Therefore, when the temperature sensor fails, the temperature sensor cannot be replaced as a single item. There was a problem that was difficult. Therefore, when the temperature sensor fails, for example, it is necessary to perform a complicated operation of removing the electric motor from a motor assembly mounted on a vehicle or the like, disassembling the electric motor, and replacing the entire stator core to which the temperature sensor is fixed. This is because when removing the temperature sensor from the slot opening of the stator core, the stator coil may be damaged.
[0006]
SUMMARY OF THE INVENTION It is an object of the present invention to provide a temperature sensor mounting structure for an electric motor, which enables accurate detection of a coil temperature and facilitates replacement of a temperature sensor.
[0007]
[Means for Solving the Problems]
Therefore, in order to achieve the above object, according to the first aspect of the present invention, in a temperature sensor mounting structure for a motor having a temperature sensor, one end of a temperature transmission pin made of a material having a high thermal conductivity is provided inside a slot of a stator. Or fixed to a stator coil mounted in the slot. The temperature sensor is detachably fixed through a mounting hole provided in a frame or a cover so that one end side thereof projects inside. One end of the temperature sensor is fitted to the other end of the temperature transmission pin, and a portion of the temperature transmission pin that contacts the air is covered with a heat insulating material.
[0008]
With such a configuration, the temperature of the stator coil mounted in the slot of the stator is transmitted to the temperature sensor without lowering the temperature around the portion that comes into contact with the air via the temperature transmission pins covered with the heat insulating material. Temperature can be accurately detected by the temperature sensor. When the temperature sensor fails, simply remove the temperature sensor from the mounting hole provided in the frame or cover, pass a new temperature sensor through the mounting hole, and fit one end of the temperature sensor to the other end of the temperature transmission pin. Good. That is, the temperature sensor can be replaced by itself. Therefore, the temperature sensor can be easily replaced while enabling accurate coil temperature detection.
[0009]
Here, the “temperature transmitting pin” is a member made of a material having a high thermal conductivity such as Cu or Al and capable of efficiently transmitting the temperature of the stator coil to the temperature sensor.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment embodying a temperature sensor mounting structure for an electric motor according to the present invention will be described with reference to FIGS.
[0011]
FIG. 1 is a cross-sectional view of a part of the electric motor for explaining a temperature sensor mounting structure of the electric motor according to the embodiment. This motor is, for example, a three-phase induction motor.
[0012]
The electric motor 1 shown in FIG. 1 includes a stator 2, a rotor 3, a temperature sensor 4, a frame 5, and a temperature transmitting pin 6.
The temperature transmission pins 6 shown in FIGS. 1 and 2 are made of a material having a high thermal conductivity, for example, Cu, Al, or the like. One half (one end side) 6a of the temperature transmission pin 6 is fixed in the slot 7 of the stator 2 with a varnish or the like. A stator coil 8 is mounted in the slot 7.
[0013]
The temperature sensor 4 is detachably fixed through a mounting hole 9 provided in the frame 5 so that a shaft portion 4a (one end side) on one end side projects into the electric motor 1. For this reason, the temperature sensor 4 of the present example is formed with a fixing convex portion 4b on the outer periphery of the central portion. When the temperature sensor 4 is passed through the mounting hole 9, the fixing projection 4 b is locked to the inner surface of the frame 5 in a state where the shaft 4 c at the other end of the temperature sensor 4 is press-fitted into the mounting hole 9, The temperature sensor 4 is fixed to the frame 5 so as not to come off.
[0014]
A fitting hole 10 is formed in the other end 6b of the temperature transmitting pin 6, and a shaft 4a on one end of the temperature sensor 4 can be fitted in the fitting hole 10.
Further, the entire periphery of the portion of the temperature transmission pin 6 that comes into contact with the air is covered with the heat insulating material 11. The heat insulating material 11 is formed of, for example, a resin having a high heat insulating effect. Then, the temperature of the stator coil 8 is transmitted to the temperature sensor 4 via the temperature transmission pins 6 covered with the heat insulating material 11 around the portion that comes into contact with the air, so that the temperature of the stator coil 8 can be measured by the temperature sensor 4. The temperature of the stator coil 8 measured by the temperature sensor 4 is sent to an electric motor control ECU (not shown) via a signal line 12 composed of a harness or the like.
[0015]
When the temperature sensor 4 fails, the temperature sensor 4 at the mounting position shown in FIG. 1 can be detached from the frame 5 of the electric motor 1 by forcibly pulling out the temperature sensor 4. When attaching a new temperature sensor 4 to the frame 5 of the electric motor 1, the temperature sensor 4 is strongly pressed toward the frame 5. Thus, in a state where the shaft portion 4c of the temperature sensor 4 is press-fitted into the mounting hole 9, the fixing projection 4b is locked to the inner surface of the frame 5, and the temperature sensor 4 is fixed to the frame 5 so as not to come off. .
[0016]
According to the embodiment configured as described above, the following operational effects can be obtained.
(A) The temperature of the stator coil 8 mounted in the slot 7 of the stator 2 in the electric motor 1 is maintained without dropping through the temperature transmitting pins 6 covered with the heat insulating material 11 around the portion that comes into contact with air. Since the temperature is transmitted to the sensor 4, the temperature of the stator coil 8 can be accurately detected by the temperature sensor 4. When the temperature sensor 4 fails, the temperature sensor 4 is removed from the mounting hole 9 provided in the frame 5, a new temperature sensor 4 is passed through the mounting hole 9, and the shaft 4 a at one end of the temperature sensor 4 is connected to the temperature transmitting pin 6. It is only necessary to fit in the fitting hole 10 of. That is, the temperature sensor can be replaced by itself. Therefore, the temperature sensor can be easily replaced while enabling accurate coil temperature detection.
[0017]
(B) Since the temperature sensor can be replaced by itself, when the temperature sensor 4 fails, the motor 1 is removed from the motor assembly mounted on a vehicle or the like, and the motor 1 is disassembled, as in the above-described conventional technology. The complicated work of replacing the stator core (stator 7) to which the temperature sensor 4 is fixed becomes unnecessary. Therefore, the temperature sensor 4 can be replaced without performing a complicated operation such as removing a part of a motor assembly mounted on a vehicle or the like.
[0018]
(C) When the temperature sensor 4 fails, the temperature sensor 4 can be replaced by a single temperature sensor. Therefore, the cost associated with component replacement can be reduced as compared with the case where the entire stator core (stator 2) is replaced as in the related art. .
[0019]
[Modifications]
The present invention can be embodied with the following modifications.
In the above embodiment, one half (one end) 6a of the temperature transmitting pin 6 is fixed in the slot 7 of the stator 2 with a varnish or the like, but the one half 6a is mounted in the slot 7. May be fixed to the stator coil 8 with a varnish or the like. In this case, the mounting position of the one-side half 6 a may be anywhere within the stator coil 8.
[0020]
In the above embodiment, the temperature sensor 4 is detachably fixed through the mounting hole 9 provided in the frame 5 so that the shaft portion 4a (one end side) at one end protrudes into the electric motor 1. However, the present invention is not limited to such a configuration. For example, when the motor 1 is a frameless motor, the present invention is also applied to a configuration in which a mounting hole is provided in an end cover (not shown) and the temperature sensor 4 is removably fixed to the mounting hole. .
[0021]
In the above-described embodiment, the temperature sensor 4 is strongly pressed toward the frame 5 so that the fixing projection 4 b is pressed into the mounting hole 9 so that the fixing projection 4 b is pressed into the inner surface of the frame 5. And the temperature sensor 4 is fixed to the frame 5 so as not to come off, but the present invention is not limited to such a fixing structure. For example, instead of providing the fixing protrusion 4 b on the temperature sensor 4, a male screw portion is formed on the outer periphery of the shaft portion of the temperature sensor 4, a female screw portion is formed on the mounting hole 9, and the temperature sensor 4 is screwed into the mounting hole 9. The present invention is also applied to a structure that is fixed by using.
[0022]
【The invention's effect】
As described above in detail, according to the present invention, the temperature of the stator coil mounted in the slot of the stator does not decrease through the temperature transmission pin covered with the heat insulating material around the portion that comes into contact with the air. Since the temperature is transmitted to the temperature sensor, the temperature of the stator coil can be accurately detected by the temperature sensor. When the temperature sensor fails, simply remove the temperature sensor from the mounting hole provided in the frame or cover, pass a new temperature sensor through the mounting hole, and fit one end of the temperature sensor to the other end of the temperature transmission pin. Good. That is, the temperature sensor can be replaced by itself. Therefore, the temperature sensor can be easily replaced while enabling accurate coil temperature detection.
[Brief description of the drawings]
FIG. 1 is an exemplary sectional view showing a part of an electric motor according to an embodiment;
FIG. 2 is an enlarged view showing the temperature transmission pin of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Electric motor, 2 ... Stator, 4 ... Temperature sensor, 5 ... Frame, 6 ... Temperature transmission pin, 6b ... Other end side, 7 ... Slot, 8 ... Stator coil, 9 ... Mounting hole, 11 ... Heat insulating material.

Claims (1)

温度センサを備える電動機の温度センサ取付け構造において、
熱伝導率の高い素材で作られた温度伝達ピンを備え、該温度伝達ピンの一端側がステータのスロット内に或いは該スロット内に装着されるステータコイルに固定され、前記温度センサは、その一端側が内部に突出するようにフレーム或いはカバーに設けた取付け孔に通して取り外し可能に固定され、前記温度伝達ピンの他端側に前記温度センサの一端側が嵌合し、また、前記温度伝達ピンの空気に触れる部分の周囲は断熱材で被覆されていることを特徴とする電動機の温度センサ取付け構造。
In a temperature sensor mounting structure of a motor having a temperature sensor,
A temperature transmission pin made of a material having high thermal conductivity is provided, and one end of the temperature transmission pin is fixed to a slot of the stator or to a stator coil mounted in the slot, and the temperature sensor has one end thereof. One end of the temperature sensor is fitted to the other end of the temperature transmission pin so as to protrude into the mounting hole provided in the frame or cover, and one end of the temperature sensor is fitted to the other end of the temperature transmission pin. A temperature sensor mounting structure for an electric motor, wherein a portion surrounding a portion touching the surface is covered with a heat insulating material.
JP2003089250A 2003-03-27 2003-03-27 Structure for mounting temperature sensor of electric motor Pending JP2004297958A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013201834A1 (en) * 2013-02-05 2014-08-07 Zf Friedrichshafen Ag Arrangement for temperature measurement of stator winding of electrical machine, has sensor guide element which arranges in housing opening through which temperature sensor is guided and is held in installation position
DE102015110399A1 (en) * 2015-06-29 2016-12-29 Ebm-Papst Mulfingen Gmbh & Co. Kg Motor temperature monitoring
CN106953471A (en) * 2017-05-24 2017-07-14 合肥巨动力***有限公司 Hybrid powder motor stator winding temperature measurement structure
US9772234B2 (en) 2013-09-13 2017-09-26 Toyota Jidosha Kabushiki Kaisha Thermistor module
WO2021047711A1 (en) * 2019-09-09 2021-03-18 Schaeffler Technologies AG & Co. KG Sensor fastening device for temperature measurement in an electrical machine of a motor vehicle
US11677299B2 (en) 2019-09-06 2023-06-13 Vestas Wind Systems A/S External temperature sensor assembly

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013201834A1 (en) * 2013-02-05 2014-08-07 Zf Friedrichshafen Ag Arrangement for temperature measurement of stator winding of electrical machine, has sensor guide element which arranges in housing opening through which temperature sensor is guided and is held in installation position
US9772234B2 (en) 2013-09-13 2017-09-26 Toyota Jidosha Kabushiki Kaisha Thermistor module
DE102015110399A1 (en) * 2015-06-29 2016-12-29 Ebm-Papst Mulfingen Gmbh & Co. Kg Motor temperature monitoring
CN106953471A (en) * 2017-05-24 2017-07-14 合肥巨动力***有限公司 Hybrid powder motor stator winding temperature measurement structure
US11677299B2 (en) 2019-09-06 2023-06-13 Vestas Wind Systems A/S External temperature sensor assembly
WO2021047711A1 (en) * 2019-09-09 2021-03-18 Schaeffler Technologies AG & Co. KG Sensor fastening device for temperature measurement in an electrical machine of a motor vehicle

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