JP2003092858A - Attaching structure of winding temperature detecting element of motor and motor using the structure - Google Patents
Attaching structure of winding temperature detecting element of motor and motor using the structureInfo
- Publication number
- JP2003092858A JP2003092858A JP2001285295A JP2001285295A JP2003092858A JP 2003092858 A JP2003092858 A JP 2003092858A JP 2001285295 A JP2001285295 A JP 2001285295A JP 2001285295 A JP2001285295 A JP 2001285295A JP 2003092858 A JP2003092858 A JP 2003092858A
- Authority
- JP
- Japan
- Prior art keywords
- detecting element
- temperature detecting
- winding
- guide
- temperature
- 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.)
- Granted
Links
- 238000004804 winding Methods 0.000 title claims abstract description 77
- 238000001514 detection method Methods 0.000 claims description 18
- 238000009413 insulation Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- 238000003780 insertion Methods 0.000 description 8
- 230000037431 insertion Effects 0.000 description 8
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 239000002966 varnish Substances 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/25—Devices for sensing temperature, or actuated thereby
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電動機の巻線焼損
を防止する為、巻線の温度を検出する温度検出素子の取
付け構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting a temperature detecting element for detecting the temperature of a winding in order to prevent winding burnout of an electric motor.
【０００２】[0002]
【従来の技術】電動機の巻線では、鉄損や銅損等により
発熱が生じる。特に電動機の負荷が過大になると発熱に
より急激に温度上昇し、巻線部の温度が、巻線の絶縁皮
膜の耐熱温度を超え、絶縁不良となり、巻線部が焼損に
至る。巻線部の焼損を防止する為、巻線部の温度検出を
行ない、巻線部がダメージを受ける前に巻線への電流を
制御する保護制御を行なっている。この巻線の温度検出
を行なう為に、温度検出素子を巻線間に埋め込む方法や
紐等により巻線に固定する方法が用いられている。2. Description of the Related Art In a winding of an electric motor, heat is generated due to iron loss, copper loss and the like. In particular, when the load of the electric motor becomes excessive, the temperature rises rapidly due to heat generation, the temperature of the winding portion exceeds the heat resistant temperature of the insulating film of the winding, the insulation becomes defective, and the winding portion is burned. In order to prevent the winding portion from being burnt out, the temperature of the winding portion is detected and protection control is performed to control the current to the winding portion before the winding portion is damaged. In order to detect the temperature of the winding, a method of embedding the temperature detecting element between the windings or a method of fixing the temperature detecting element to the winding with a string or the like is used.
【０００３】例えば、特開平６−７０５１０号公報に
は、ステータコアに巻線をしたコイルに温度検出素子の
形状を摸したダミーを挿入し、ダミーを挿入したままコ
イルを成形し、更にダミーを抜き取る温度センサーの埋
め込み方法が記載されている。また、特開平１０−９４
２２２号公報には、電動機のリヤハウジング部に設けた
ガイドを用いて、温度検出素子を取付けることで、ステ
ータに装着されたコイルに加工を加えることなく温度検
出素子を取付ける方法が記載されている。さらに、特開
平８−２１４５０５号公報には、電動機の固定子コイル
の温度を検出するために、カラーの領域における基体の
凹所に、固定子コイルで巻き上げた温度に応答する構造
素子を配置し、この構造素子は接続端子と結合するよう
にしたものが記載されている。特開平８−２１４５０５
号公報の０００６の記載によれば、温度に応答する構造
素子は絶縁体を装着した後、固定子コイルを巻装するこ
とにより固定される。For example, in Japanese Unexamined Patent Publication No. 6-70510, a dummy having a shape of a temperature detecting element is inserted into a coil having a winding on a stator core, the coil is molded with the dummy inserted, and the dummy is removed. A method of embedding a temperature sensor is described. In addition, JP-A-10-94
Japanese Unexamined Patent Publication No. 222 discloses a method of mounting a temperature detecting element by using a guide provided in a rear housing part of an electric motor so that the coil mounted on the stator is not processed. . Further, in Japanese Unexamined Patent Publication No. 8-214505, in order to detect the temperature of the stator coil of the electric motor, a structural element responsive to the temperature wound by the stator coil is arranged in the recess of the base in the collar region. , This structural element is described so as to be coupled with a connection terminal. JP-A-8-214505
According to the description of 0006 of the publication, the temperature-responsive structural element is fixed by mounting an insulator and then winding a stator coil.
【０００４】[0004]
【発明が解決しようとする課題】上記特開平６−７０５
１０号公報記載の例では、巻線したコイルに温度検出素
子の形状を摸したダミーを挿入する工程、ダミーを挿入
したままコイルを成形する工程、更にダミーを抜き取る
工程が増加し、ステータコイルの生産性を阻害する要因
となっている。また、温度検出素子を紐等により巻線に
固定する方法では、難作業であり、人手に頼らざるを得
なく、自動化の妨げとなっていた。一方、特開平１０−
９４２２２号公報記載の例は、ステータコイルに加工を
加えず、温度検出素子を容易にコイルに取付けることを
目的にしている。しかし、通常、ステータにコイルを巻
線し、コイル端末を接続した後、コイル部の絶縁処理
（ワニス処理等）を施し、その後、リヤハウジングとス
テータを組付ける。従がって、温度検出素子を取り付け
るガイド部と検出素子を接触させるコイル部の位置精度
を得る為には、リヤハウジングとステータの組付け精度
に注意を払う必要があり、組立の効率を阻害する。ま
た、コイル部の絶縁処理（ワニス処理等）後、リヤハウ
ジングを組付け、その後、ガイド部に温度検出素子を挿
入、取付ける為、温度検出素子とコイル間にワニス層が
介在し、温度検出面の熱抵抗を増加させ、温度検出精度
が悪化するという問題がある。[Patent Document 1] Japanese Patent Application Laid-Open No. 6-705
In the example described in Japanese Patent Publication No. 10, the steps of inserting a dummy having the shape of the temperature detecting element into the wound coil, the step of molding the coil with the dummy inserted, and the step of removing the dummy are increased, and It is a factor that hinders productivity. Further, the method of fixing the temperature detecting element to the winding with a string or the like is a difficult work, and it is necessary to rely on human hands, which is an obstacle to automation. On the other hand, JP-A-10-
The example disclosed in Japanese Patent No. 94222 aims at easily attaching the temperature detecting element to the coil without processing the stator coil. However, usually, after winding a coil around the stator and connecting the coil end, the coil portion is subjected to insulation treatment (varnish treatment or the like), and then the rear housing and the stator are assembled. Therefore, in order to obtain the positional accuracy of the coil part that contacts the temperature detection element and the guide part that attaches the temperature detection element, it is necessary to pay attention to the assembly accuracy of the rear housing and the stator, which hinders the assembly efficiency. To do. In addition, after the coil section is insulated (varnished, etc.), the rear housing is assembled, and then the temperature detection element is inserted and attached to the guide section. However, there is a problem in that the temperature detection accuracy is deteriorated by increasing the thermal resistance of the.
【０００５】さらに、特開平８−２１４５０５号公報記
載のものでは、温度に応答する構造素子は絶縁体を装着
した後に固定子コイルを巻装することにより固定され
る。すなわち、完成された電動機において、構造素子の
上に固定子コイルが巻装されているので、構造素子を電
動機の固定子から取り外すことは出来ない。一般に、温
度検出素子は、温度検出素子自体の異常などの可能性が
あるため、定期的に交換などのメンテナンスをする必要
がある。特開平８−２１４５０５号公報記載のもので
は、固定子を含めて交換する必要が生ずる。Further, in the structure disclosed in Japanese Patent Laid-Open No. 8-214505, the temperature-responsive structural element is fixed by mounting an insulator and then winding a stator coil. That is, in the completed electric motor, since the stator coil is wound around the structural element, the structural element cannot be removed from the stator of the electric motor. In general, the temperature detecting element has a possibility of abnormality of the temperature detecting element itself, and therefore it is necessary to periodically perform maintenance such as replacement. In the case described in Japanese Patent Application Laid-Open No. 8-214505, it is necessary to replace the stator including the stator.
【０００６】そこで、本発明は、前記従来の問題点を解
決し、温度検出素子のコイルへの取付けを容易にし、ま
た、温度検出素子の温度検出面が確実にコイル表面に接
触し、安定した温度検出を可能にすることを目的とす
る。Therefore, the present invention solves the above-mentioned conventional problems, facilitates attachment of the temperature detecting element to the coil, and ensures that the temperature detecting surface of the temperature detecting element is in contact with the coil surface reliably. The purpose is to enable temperature detection.
【０００７】本発明の他の目的は、温度検出素子の温度
検出面が確実にコイル表面に接触するとともに、メンテ
ナンスに備えて固定子から容易に取り外すことができ
る、電動機の巻線温度検出素子の取付け構造及びそれを
用いた電動機を提供することにある。Another object of the present invention is to provide a winding temperature detecting element for an electric motor, in which the temperature detecting surface of the temperature detecting element surely contacts the coil surface and can be easily removed from the stator for maintenance. An object is to provide a mounting structure and an electric motor using the mounting structure.
【０００８】[0008]
【課題を解決するための手段】本発明は、電動機の巻線
温度を検出する温度検出素子の取付け構造において、電
動機のステータコアとコイルエンドの間隙に設けられ
た、前記温度検出素子を収納するガイドを備え、該ガイ
ドは弾性変形可能な引っ掛かり部を有し、該引っ掛かり
部を変形させて前記ガイドに前記温度検出素子を挿入す
ることにより、前記温度検出素子の感温部を前記コイル
エンド部の巻線内面に接触保持させることを特徴とす
る。According to the present invention, in a mounting structure of a temperature detecting element for detecting a winding temperature of an electric motor, a guide for accommodating the temperature detecting element is provided in a gap between a stator core and a coil end of the electric motor. The guide has an elastically deformable hooking portion, and by deforming the hooking portion and inserting the temperature detecting element into the guide, the temperature sensing portion of the temperature detecting element is connected to the coil end portion. It is characterized in that it is held in contact with the inner surface of the winding.
【０００９】本発明の電動機の巻線温度検出素子の取付
けは、電動機のステータコアとコイルエンドの間隙にガ
イドを用いて温度検出素子を取付けることにより、ステ
ータコイルに加工を加えたり、コイルに損傷を与えるこ
となく取付けを行なうものである。これにより、温度検
出素子の取付け作業が容易になる。また、温度検出素子
の温度検出面が確実にコイル表面に接触するとともに、
メンテナンスに備えて固定子から容易に取り外すことが
できる。The winding temperature detecting element of the electric motor according to the present invention is mounted on the stator coil by using a guide in the gap between the stator core and the coil end of the electric motor so as to process the stator coil or damage the coil. It is installed without giving. This facilitates the work of mounting the temperature detecting element. In addition, the temperature detecting surface of the temperature detecting element surely contacts the coil surface,
Can be easily removed from the stator for maintenance.
【００１０】本発明の他の特徴は、前記ガイドが、ステ
ータコアと巻線のコイルエンド部のトンネル状間隙に着
脱自在であり、前記温度検出素子を収納する切り欠き部
を有し、前記ガイドが前記引っ掛かり部によりコイルエ
ンド部に固定され、前記切り欠き部から覗いた前記温度
検出素子の表面が前記巻線の内側表面と密着することに
ある。Another feature of the present invention is that the guide is attachable to and detachable from a tunnel-shaped gap between a stator core and a coil end portion of a winding, and has a notch portion for accommodating the temperature detecting element. The surface of the temperature detecting element, which is fixed to the coil end portion by the catching portion and is seen from the cutout portion, comes into close contact with the inner surface of the winding.
【００１１】本発明の他の特徴は、前記ガイドが、ステ
ータコアとコイル間の絶縁を確保するボビンと一体で、
該ボビンには、前記温度検出素子を保持する保持部と該
検出素子の温度感知面を巻回コイルの内面に接触可能に
する貫通穴を設けていることにある。Another feature of the present invention is that the guide is integral with a bobbin for ensuring insulation between the stator core and the coil,
The bobbin is provided with a holding portion for holding the temperature detecting element and a through hole for allowing the temperature sensing surface of the detecting element to contact the inner surface of the winding coil.
【００１２】また、温度検出素子の取付け位置は、ガイ
ドとステータコイル間で一定位置に定まり、更に、ステ
ータコアに巻線した後、前記ガイドに温度検出素子を挿
入、取付けし、その後、絶縁処理（ワニス処理等）を施
すことで、温度検出素子とコイル表面の接触を確実にで
き、安定した温度検出を行なうことが可能となる。The mounting position of the temperature detecting element is fixed at a fixed position between the guide and the stator coil. Furthermore, after winding the stator core, the temperature detecting element is inserted and mounted in the guide, followed by insulation treatment ( By performing a varnish treatment or the like), the contact between the temperature detecting element and the coil surface can be ensured and stable temperature detection can be performed.
【００１３】[0013]
【発明の実施の形態】以下、本発明による電動機の巻線
温度検知素子の取付け構造について、図示の実施形態に
より詳細に説明する。図１〜図３に、本発明の第一の実
施例になる電動機の巻線温度検知素子の取付け構造を示
す。図１は本発明の巻線温度検出素子の取付けを説明す
る電動機のステータの斜視図であり、図２は、本実施例
の巻線３及びガイド６挿入部の横断面図、図３は電動機
のステータの拡大斜視図である。ステータコア１は、テ
ィース２に巻線３が巻回されている。なお、ステータコ
ア１の表面は、図示されていない絶縁皮膜により、巻線
３との絶縁が確保されている。温度検出素子４は、樹脂
でモールドされたサーミスタ等であり、巻線３の表面と
接触させ、巻線温度を検出する為の素子である。該温度
検出素子４の検出信号は、リード線５を介して取出され
る。温度検出素子４は、樹脂等で成形されたガイド６に
挿入され、固定される。ここで、ガイド６は、前記温度
検出素子４が覗く様に一部切り欠き部７が形成されてい
る。次に温度検出素子４を固定したガイド６は、前記ス
テータコアの端面と巻線３のコイルエンドとの概略半円
形断面のトンネル状間隙８に挿入され、前記切り欠き部
７から覗いた温度検出素子４がその長手方向において巻
線３の内側表面と密着して、固定される。次に、巻線３
の絶縁及び固定を目的に、絶縁処理（ワニス処理等）が
施される。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a mounting structure of a winding temperature detecting element of an electric motor according to the present invention will be described in detail with reference to embodiments shown in the drawings. 1 to 3 show a mounting structure of a winding temperature detecting element of an electric motor according to a first embodiment of the present invention. FIG. 1 is a perspective view of a stator of an electric motor for explaining attachment of a winding temperature detecting element of the present invention, FIG. 2 is a cross-sectional view of a winding 3 and a guide 6 insertion portion of the present embodiment, and FIG. 3 is an enlarged perspective view of the stator of FIG. In the stator core 1, the winding 3 is wound around the tooth 2. The surface of the stator core 1 is insulated from the winding 3 by an insulating film (not shown). The temperature detecting element 4 is a thermistor or the like molded with resin, and is an element for contacting the surface of the winding 3 and detecting the winding temperature. The detection signal of the temperature detecting element 4 is taken out via the lead wire 5. The temperature detection element 4 is inserted and fixed in a guide 6 formed of resin or the like. Here, the guide 6 is formed with a partial cutout 7 so that the temperature detecting element 4 can be seen. Next, the guide 6 to which the temperature detecting element 4 is fixed is inserted into the tunnel-shaped gap 8 having a substantially semicircular cross section between the end surface of the stator core and the coil end of the winding 3, and the temperature detecting element seen through the cutout portion 7 is inserted. 4 is fixed in close contact with the inner surface of the winding 3 in its longitudinal direction. Next, winding 3
Insulation treatment (varnish treatment, etc.) is performed for the purpose of insulation and fixing.
【００１４】ガイド６の先端には、ガイド６及び温度検
出素子４が前記トンネル状間隙８から容易に抜け無い様
に、引っ掛かり部９が形成されている。ガイド６は、樹
脂成形品であり、弾性を有する為、ガイド６及び温度検
出素子４を前記トンネル状間隙８に容易に挿入でき、挿
入後は、前記引っ掛かり部９が巻線３のステータ内径側
に引っ掛かり、確実に固定される。A catching portion 9 is formed at the tip of the guide 6 so that the guide 6 and the temperature detecting element 4 do not easily come out of the tunnel-shaped gap 8. Since the guide 6 is a resin molded product and has elasticity, the guide 6 and the temperature detecting element 4 can be easily inserted into the tunnel-shaped gap 8, and after the insertion, the catch 9 is formed on the stator inner diameter side of the winding 3. It will be caught in and fixed securely.
【００１５】このように、本実施例によれば、温度検出
素子４を容易に取付けられ、取付け作業性が向上すると
共に、取付け位置が安定し、温度検出精度も向上する。
すなわち、本実施例によれば、挿入等の単純な操作で温
度検出素子を取付けられる為、取付け作業工数が少な
く、また、一方向への挿入動作である為、自動化が容易
である。As described above, according to this embodiment, the temperature detecting element 4 can be easily mounted, the mounting workability is improved, the mounting position is stable, and the temperature detection accuracy is also improved.
That is, according to the present embodiment, since the temperature detecting element can be mounted by a simple operation such as insertion, the number of man-hours required for mounting is small, and the insertion operation in one direction facilitates automation.
【００１６】更に、ガイド６の略円弧状（曲率ｒ）の断
面形状及び切り欠き部７から覗いた温度検出素子の断面
形状を、前記概略半円形断面（曲率Ｒ）のトンネル状間
隙の形状に合わせる（曲率ｒ≒Ｒ）ことで、切り欠き部
７から覗いた温度検出素子４がその長手方向において巻
線３の内側表面に確実に、一定位置で接触するようにで
き、取付け位置の変化による温度検出精度の低下を低減
できる。すなわち、モールドされた温度検出素子４のほ
ぼ全表面が巻線３の内側表面と直接接触するので、温度
検出精度が向上する。Further, the cross-sectional shape of the guide 6 having a substantially arcuate shape (curvature r) and the cross-sectional shape of the temperature detecting element viewed from the cutout portion 7 are made into the shape of a tunnel-shaped gap having the above-mentioned roughly semicircular cross section (curvature R). By matching (curvature r≈R), the temperature detecting element 4 viewed from the cutout portion 7 can be surely brought into contact with the inner surface of the winding wire 3 at a constant position in the longitudinal direction thereof, and the change in the mounting position can The decrease in temperature detection accuracy can be reduced. That is, since almost the entire surface of the molded temperature detecting element 4 is in direct contact with the inner surface of the winding 3, the temperature detecting accuracy is improved.
【００１７】更に本実施例では、温度検出素子を取り付
けた後、絶縁処理（ワニス処理等）が施されるので、温
度検出素子４と巻線３が密着した状態を確保でき、ワニ
ス層により温度検出面の熱抵抗を増加させること無く、
良好な温度検出精度が得られる。Further, in this embodiment, since the temperature detecting element is attached and then subjected to the insulation treatment (varnish treatment or the like), the temperature detecting element 4 and the winding 3 can be kept in close contact with each other, and the varnish layer prevents temperature change. Without increasing the thermal resistance of the detection surface,
Good temperature detection accuracy can be obtained.
【００１８】次に、本発明の他の実施例を、図４〜図６
により、詳細に説明する。図４は本発明の巻線温度検出
素子の取付けを説明する電動機のステータの上面図であ
り、図５は、図４のＡ−Ａ断面、図６は図４のＢ−Ｂ断
面である。この実施例では、第一の実施例のガイド６に
相当するものとして保持部１１を用いる。保持部１１の
断面形状は概略半円形断面のトンネル状間隙８の形状に
合わせる。保持部１１には、巻線３のトンネル状間隙８
から容易に抜け無い様にする引っ掛かり部９のほかに、
温度検出素子４が保持部１１から容易に抜け無い様に保
持する引っ掛かり部１３が形成されている。Next, another embodiment of the present invention will be described with reference to FIGS.
Will be described in detail. 4 is a top view of the stator of the electric motor for explaining the mounting of the winding temperature detecting element of the present invention, FIG. 5 is an AA cross section of FIG. 4, and FIG. 6 is a BB cross section of FIG. In this embodiment, the holding portion 11 is used as the one corresponding to the guide 6 of the first embodiment. The cross-sectional shape of the holding portion 11 is matched with the shape of the tunnel-shaped gap 8 having a substantially semicircular cross section. The holding portion 11 has a tunnel-shaped gap 8 of the winding 3.
In addition to the catch 9 that prevents it from coming off easily,
A catching portion 13 is formed to hold the temperature detecting element 4 so that the temperature detecting element 4 does not easily come off from the holding portion 11.
【００１９】保持部１１は、樹脂成形品であり、弾性を
有する為、保持部１１及び温度検出素子４を前記トンネ
ル状間隙８に容易に挿入でき、挿入後は、前記引っ掛か
り部９及び１３により、温度検出素子４が引っ掛かり部
１３の弾性により巻線３の内側表面に強く押圧される。Since the holding portion 11 is a resin molded product and has elasticity, the holding portion 11 and the temperature detecting element 4 can be easily inserted into the tunnel-shaped gap 8, and after the insertion, the holding portions 9 and 13 are used. The temperature detecting element 4 is strongly pressed against the inner surface of the winding 3 by the elasticity of the catch 13.
【００２０】このように、本実施例によれば、温度検出
素子４を容易に取付けられ、取付け作業性が向上すると
共に、取付け位置が安定し、温度検出精度も向上する。
すなわち、本実施例によれば、挿入等の単純な操作で温
度検出素子を取付けられる為、取付け作業工数が少な
く、また、一方向への挿入動作である為、自動化が容易
である。更に、温度検出素子４が巻線３の内側表面に確
実に、一定位置で接触でき、取付け位置の変化による温
度検出精度の低下を低減できる。すなわち、モールドさ
れた温度検出素子４が強く押圧されそのほぼ全表面が巻
線３の内側表面と直接接触するので、温度検出精度がよ
り向上する。As described above, according to this embodiment, the temperature detecting element 4 can be easily mounted, the mounting workability is improved, the mounting position is stable, and the temperature detection accuracy is also improved.
That is, according to the present embodiment, since the temperature detecting element can be mounted by a simple operation such as insertion, the number of man-hours required for mounting is small, and the insertion operation in one direction facilitates automation. Further, the temperature detecting element 4 can surely come into contact with the inner surface of the winding 3 at a fixed position, and the decrease in temperature detection accuracy due to the change in the mounting position can be reduced. That is, since the molded temperature detecting element 4 is strongly pressed and almost the entire surface thereof directly contacts the inner surface of the winding 3, the temperature detecting accuracy is further improved.
【００２１】さらに、本発明の他の実施例を図７によ
り、詳細に説明する。図７は、本発明の他の実施例にな
るステータの縦断面図である。巻線３は、ステータコア
１のティース２にボビン１０を介して、巻回される。ボ
ビン１０のコイルエンド部には、温度検出素子４を挿
入、固定するガイドとしての保持部１１が設けられ、更
に、巻線３の内側表面と温度検出素子４を接触可能にす
る貫通穴１２が設けられている。前記保持部１１には、
挿入した温度検出素子４の抜けを防止する引っ掛け部１
３を設けてある。なお、前記ボビン１０は、樹脂成形品
であり、弾性を有する為、前記引っ掛け部１３全体が温
度検出素子４を巻線３の内側表面に押付け、接触状態を
確実にする。また、保持部１１の貫通穴１２の断面形状
（曲率ｒ）及び温度検出素子の断面形状を、前記巻線３
の内側表面（曲率Ｒ）の形状に合わせる（曲率ｒ≒Ｒ）
ことで、貫通穴１２から覗いた温度検出素子４がその長
手方向において巻線３の内側表面に確実に、一定位置で
接触するようにでき、取付け位置の変化による温度検出
精度の低下を低減できる。Further, another embodiment of the present invention will be described in detail with reference to FIG. FIG. 7 is a vertical sectional view of a stator according to another embodiment of the present invention. The winding 3 is wound around the tooth 2 of the stator core 1 via the bobbin 10. The coil end portion of the bobbin 10 is provided with a holding portion 11 as a guide for inserting and fixing the temperature detecting element 4, and a through hole 12 for allowing the inner surface of the winding 3 and the temperature detecting element 4 to come into contact with each other. It is provided. In the holding portion 11,
Hooking part 1 for preventing the temperature detection element 4 from coming off
3 is provided. Since the bobbin 10 is a resin molded product and has elasticity, the entire hooking portion 13 presses the temperature detecting element 4 against the inner surface of the winding 3 to ensure a contact state. In addition, the cross-sectional shape (curvature r) of the through hole 12 of the holding portion 11 and the cross-sectional shape of the temperature detecting element are set to the winding 3
Match the shape of the inner surface (curvature R) of the (curvature r ≈ R)
As a result, the temperature detecting element 4 seen through the through hole 12 can surely come into contact with the inner surface of the winding 3 at a fixed position in the longitudinal direction thereof, and a decrease in temperature detection accuracy due to a change in mounting position can be reduced. .
【００２２】この実施例によれば、ボビン１０に前記ガ
イド６と同一の機能を持たせることが可能であり、ガイ
ド６を用いずに、ステータコア１にセットしたボビン１
０に巻線後、温度検出素子４を挿入するだけで良い。従
がって、前記実施例と同様に温度検出素子の取付けが容
易になり、巻線との確実な接触により、温度検出精度が
向上する。更に、ガイド部品を削減できる。According to this embodiment, the bobbin 10 can have the same function as the guide 6, and the bobbin 1 set on the stator core 1 without using the guide 6.
After winding to 0, it suffices to insert the temperature detecting element 4. Therefore, similarly to the above-described embodiment, the temperature detecting element can be easily attached and the temperature detecting accuracy is improved by the reliable contact with the winding. Further, the number of guide parts can be reduced.
【００２３】[0023]
【発明の効果】以上説明したように、本発明によれば、
電動機の巻線温度検出素子の取付けが容易になり、自動
化が可能となる。また、温度検出素子の取付け位置が安
定し、巻線との確実な接触が実現され、温度検出精度を
向上することが可能となる。As described above, according to the present invention,
The winding temperature detecting element of the electric motor can be easily attached and automation can be achieved. In addition, the mounting position of the temperature detecting element is stable, reliable contact with the winding is realized, and the temperature detecting accuracy can be improved.
【図１】 本発明の第一の実施例になる電動機の巻線温
度検出素子取付け構造を説明する電動機のステータの斜
視図である。FIG. 1 is a perspective view of a stator of an electric motor for explaining a winding temperature detecting element mounting structure of the electric motor according to a first embodiment of the present invention.
【図２】 第一の実施例の巻線及びガイド挿入部の横断
面図である。FIG. 2 is a cross-sectional view of a winding and a guide insertion portion of the first embodiment.
【図３】 第一の実施例の電動機のステータの拡大斜視
図である。FIG. 3 is an enlarged perspective view of a stator of the electric motor according to the first embodiment.
【図４】 本発明の他の実施例になる巻線温度検出素子
の取付けを説明する電動機のステータの上面図である。FIG. 4 is a top view of a stator of an electric motor for explaining mounting of a winding temperature detecting element according to another embodiment of the present invention.
【図５】 図４のＡ−Ａ断面である。5 is a cross section taken along the line AA of FIG.
【図６】 図４のＢ−Ｂ断面である。6 is a BB cross section of FIG.
【図７】 本発明の別の温度検出素子取付け構造の縦断
面図である。FIG. 7 is a vertical cross-sectional view of another temperature detecting element mounting structure of the present invention.
１…ステータコア、２…ティース、３…巻線、４…温度
検出素子、５…リード線、６…ガイド、７…切り欠き
部、８…トンネル状間隙、９…引っ掛かり部、１０…ボ
ビン、１１…保持部、１２…貫通穴、１３…引っ掛け部DESCRIPTION OF SYMBOLS 1 ... Stator core, 2 ... Teeth, 3 ... Winding, 4 ... Temperature detection element, 5 ... Lead wire, 6 ... Guide, 7 ... Notch, 8 ... Tunnel gap, 9 ... Hook, 10 ... Bobbin, 11 ... Holding part, 12 ... Through hole, 13 ... Hooking part
───────────────────────────────────────────────────── フロントページの続き (72)発明者 森 嘉巳 茨城県ひたちなか市大字高場2520番地 株 式会社日立製作所自動車機器グループ内 Ｆターム(参考） 5H604 AA08 BB01 CC01 CC05 CC13 QA08 QB12 QB17 5H611 AA01 BB01 PP02 QQ04 UA02 UA03 UB01 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Yoshimi Mori Hitachinaka City, Ibaraki Prefecture 2520 Takaba Ceremony Company Hitachi Ltd. Automotive equipment group F-term (reference) 5H604 AA08 BB01 CC01 CC05 CC13 QA08 QB12 QB17 5H611 AA01 BB01 PP02 QQ04 UA02 UA03 UB01
Claims (7)
の取付け構造において、電動機のステータコアとコイル
エンドの間隙に設けられた、前記温度検出素子を収納す
るガイドを備え、該ガイドは弾性変形可能な引っ掛かり
部を有し、 該引っ掛かり部を変形させて前記ガイドに前記温度検出
素子を挿入することにより、前記温度検出素子の感温部
を前記コイルエンド部の巻線内面に接触保持させること
を特徴とする電動機の巻線温度検出素子の取付け構造。1. A structure for mounting a temperature detecting element for detecting a winding temperature of an electric motor, comprising a guide which is provided in a gap between a stator core and a coil end of the electric motor and accommodates the temperature detecting element, the guide being elastically deformed. And a temperature sensing element of the temperature sensing element is inserted into the guide so that the temperature sensing portion of the temperature sensing element is held in contact with the inner surface of the coil of the coil end portion. A mounting structure for a winding temperature detecting element of an electric motor.
ルエンド部のトンネル状間隙に着脱自在であり、前記温
度検出素子を収納する切り欠き部を有し、前記ガイドが
前記引っ掛かり部によりコイルエンド部に固定され、前
記切り欠き部から覗いた前記温度検出素子の表面が前記
巻線の内側表面と密着することを特徴とする請求項１の
電動機の巻線温度検出素子の取付け構造。2. The guide is attachable / detachable to / from a tunnel-shaped gap between a stator core and a coil end portion of a winding, and has a notch portion for accommodating the temperature detecting element, and the guide has a coil end by the catch portion. 2. The mounting structure for a winding temperature detecting element of an electric motor according to claim 1, wherein the surface of the temperature detecting element fixed to a portion is closely contacted with the inner surface of the winding.
とほぼ同じ曲率の略半円形の断面であることを特徴とす
る請求項２の電動機の巻線温度検出素子の取付け構造。3. The mounting structure for a winding temperature detecting element of an electric motor according to claim 2, wherein the guide has a substantially semi-circular cross section having substantially the same curvature as the shape of the tunnel gap.
絶縁を確保するボビンと一体で、該ボビンには、前記温
度検出素子を保持する保持部と該検出素子の温度感知面
を巻回コイルの内面に接触可能にする貫通穴を設けてい
ることを特徴とする請求項１の電動機の巻線温度検出素
子の取付け構造。4. The guide is integral with a bobbin for ensuring insulation between the stator core and the coil, and the bobbin has a holding portion for holding the temperature detecting element and a temperature sensing surface of the detecting element for winding the coil. The mounting structure for a winding temperature detecting element of an electric motor according to claim 1, wherein a through hole is provided to allow contact with the inner surface.
度検出素子の断面形状が、前記巻線の内側表面の形状と
ほぼ同じ曲率の断面であることを特徴とする請求項４の
電動機の巻線温度検出素子の取付け構造。5. The electric motor according to claim 4, wherein the sectional shape (curvature r) of the through hole and the sectional shape of the temperature detecting element are substantially the same curvature as the shape of the inner surface of the winding. Winding temperature detection element mounting structure.
温度検出素子の取付け構造を備えたことを特徴とする電
動機。6. An electric motor comprising the winding temperature detecting element mounting structure according to any one of claims 1 to 5.
子の取付け方法において、前記温度検出素子を、該温度
検出素子が覗く様に一部切り欠き部が形成されたガイド
に挿入固定し、 次に、前記温度検出素子を固定した前記ガイドを、前記
電動機のステータコアの端面と前記巻線のコイルエンド
との概略半円形断面のトンネル状間隙に挿入し、前記ガ
イドの引っ掛かり部により前記ガイドを前記巻線の内側
に固定させ、 次に、前記巻線に対して絶縁処理を施すことを特徴とす
る電動機の温度検出素子の取付け方法。7. A method of mounting a temperature detecting element for detecting the temperature of a winding of an electric motor, wherein the temperature detecting element is inserted and fixed in a guide having a cutout part so that the temperature detecting element can be seen. Next, the guide to which the temperature detecting element is fixed is inserted into a tunnel-shaped gap having a substantially semicircular cross section between the end surface of the stator core of the electric motor and the coil end of the winding, and the guide is hooked by the catching portion of the guide. Is fixed to the inside of the winding, and then the winding is subjected to insulation treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001285295A JP3699025B2 (en) | 2001-09-19 | 2001-09-19 | Mounting structure of winding temperature detecting element of electric motor and electric motor using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001285295A JP3699025B2 (en) | 2001-09-19 | 2001-09-19 | Mounting structure of winding temperature detecting element of electric motor and electric motor using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003092858A true JP2003092858A (en) | 2003-03-28 |
| JP3699025B2 JP3699025B2 (en) | 2005-09-28 |
Family
ID=19108463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001285295A Expired - Fee Related JP3699025B2 (en) | 2001-09-19 | 2001-09-19 | Mounting structure of winding temperature detecting element of electric motor and electric motor using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3699025B2 (en) |
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