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JP2007244096A - Electric motor - Google Patents

Electric motor
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Publication number
JP2007244096A
JP2007244096AJP2006062905AJP2006062905AJP2007244096AJP 2007244096 AJP2007244096 AJP 2007244096AJP 2006062905 AJP2006062905 AJP 2006062905AJP 2006062905 AJP2006062905 AJP 2006062905AJP 2007244096 AJP2007244096 AJP 2007244096A
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tube
flexible body
wiring
housing inner
electric motor
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JP2007244096A5 (en
JP4900780B2 (en
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Hirohide Konishi
博英 小西
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NSK Ltd
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NSK Ltd
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Abstract

Translated fromJapanese

【課題】配線の取り付け作業の効率を高めるとともに、電動機の信頼性を高めること。
【解決手段】ハウジングインナ14の外周面に凹部16を形成し、凹部16に配線固定金具20を挿着し、配線固定金具20をボルト42でハウジングインナ14に固定し、リード線38が挿入されたチューブ36を配線固定金具20の湾曲部22に挿着し、チューブ36の外周側を配線支持部28,30で支持し、チ熱収縮ューブ40による段差と配線支持部28、30との当接により、チューブ36の移動を阻止する。
【選択図】図5
An object of the present invention is to improve the efficiency of electric wire attachment work and increase the reliability of an electric motor.
A recess 16 is formed on the outer peripheral surface of a housing inner 14, a wiring fixing bracket 20 is inserted into the recess 16, the wiring fixing bracket 20 is fixed to the housing inner 14 with a bolt 42, and a lead wire 38 is inserted. The tube 36 is inserted into the curved portion 22 of the wiring fixing bracket 20, the outer periphery of the tube 36 is supported by the wiring support portions 28, 30, and the step between the heat shrinkable tube 40 and the wiring support portions 28, 30 The contact prevents the movement of the tube 36.
[Selection] Figure 5

Description

Translated fromJapanese

本発明は、電動機に関し、特に、電動機のコイルに接続されるリード線等の配線の取り付け構造の改良に関する。  The present invention relates to an electric motor, and more particularly to an improvement in a structure for attaching a wiring such as a lead wire connected to a coil of the electric motor.

従来、スピンドル・歯車などを介せずに、直接負荷を回転自在に支持し、その負荷に対して回転駆動力を直接与えるようにした電動機(モータ)は、工作機器のワーク回転保持部や、ロボットの駆動関節部等に用いられている。  Conventionally, an electric motor (motor) that directly supports a load rotatably without using a spindle or a gear and directly applies a rotational driving force to the load is a work rotation holding portion of a machine tool, It is used for driving joints of robots.

この種の電動機としては、例えば、ステータが内周に配置され、ロータが外周に配置された外転型電動機が知られている。外転型電動機は、配線・配管・補助軸などが通される中空穴を備えている場合があり、そのような場合、負荷を直接駆動する装置の特性上、中空穴としてはできるだけ大きいことが要求されるのに対して、装置の外形はできるだけ小さく、装置の軸方向の高さは低いことが要求されている。  As this type of electric motor, for example, an abduction type electric motor in which a stator is disposed on the inner periphery and a rotor is disposed on the outer periphery is known. An abduction motor may have a hollow hole through which wiring, piping, auxiliary shafts, etc. pass. In such a case, the hollow hole should be as large as possible due to the characteristics of the device that directly drives the load. In contrast to this, the outer shape of the device is required to be as small as possible, and the axial height of the device is required to be low.

一方、限られた容積内で電動機出力(モータ出力)をできるだけ大きくするためには、ステータの外周はできるだけ大きくし、内周はできる限り小さくする必要がある。したがって、モータ出力に直接寄与しないハウジングの外形はできるだけ小さくする必要がある。さらにモータ出力に直接寄与しない配線の引き出し部もできるだけ小さくする必要がある。  On the other hand, in order to make the motor output (motor output) as large as possible within a limited volume, it is necessary to make the outer circumference of the stator as large as possible and make the inner circumference as small as possible. Therefore, the outer shape of the housing that does not directly contribute to the motor output needs to be as small as possible. Furthermore, it is necessary to make the lead-out portion of the wiring that does not directly contribute to the motor output as small as possible.

そこで、ステータのコイルなどに接続されるリード線などをモータハウジングに固定するに際しては、給電用のリード線やセンサ用のリード線を保護するために、各リード線にシリコンガラス製チューブなどの可撓性のチューブを被せ、これらを、半円弧形状の取り付け部を有する配線固定金具で押し付けてモータハウジングに固定する方法が採用されていた。また、リード線をモータケースから引き出すに際しては、モータケースのリード線引出し穴に挿着されたゴムブッシュよりも外径の大きい結び目をリード線に形成し、リード線がモータケース外部に引っ張られても、リード線の結び目がゴムブッシュとモータケースの天井面に当たって引っかかるようにするようにしたものが提案されている(特許文献1参照)。ステータ側のハウジングに固定される可撓体としては上部のようなチューブ
を被せたリード線(ケーブル線)の他、例えば、冷却用のエアを供給するためのチューブ等もある。
特開平10−32956号公報
Therefore, when fixing the lead wire connected to the stator coil, etc. to the motor housing, a silicon glass tube or the like can be used for each lead wire to protect the lead wire for power supply and the lead wire for the sensor. A method has been employed in which flexible tubes are covered and these are pressed to a motor housing by pressing them with a wiring fixing bracket having a semicircular arc-shaped mounting portion. Also, when pulling out the lead wire from the motor case, a knot having a larger outer diameter than the rubber bush inserted in the lead wire lead-out hole of the motor case is formed on the lead wire, and the lead wire is pulled outside the motor case. In addition, there has been proposed one in which the knot of the lead wire hits the rubber bush and the ceiling surface of the motor case (see Patent Document 1). As a flexible body fixed to the stator-side housing, there are, for example, a tube for supplying cooling air in addition to a lead wire (cable wire) covered with a tube such as an upper portion.
JP-A-10-32956

例えば、可撓体が上記のようなケーブル線の場合、半円弧形状の取り付け部を有する配線固定金具を用いて配線をハウジングに取り付けるに際しては、ハウジングの凹部内に挿入されたチューブの外周面を配線固定金具で押さえた状態で、配線固定金具の両端に形成されたボルト挿入穴内にボルトを挿入し、配線を押しつぶしながらボルトを締めこむ必要がある。このため、限られたスペース内において、ボルトと配線固定金具を一方の手で保持しながら、他方の手でレンチを回す作業は非常に困難である。  For example, when the flexible body is a cable wire as described above, when attaching the wiring to the housing using a wiring fixing bracket having a semicircular arc-shaped attachment portion, the outer peripheral surface of the tube inserted into the recess of the housing is used. It is necessary to insert the bolts into the bolt insertion holes formed at both ends of the wiring fixing bracket while holding the wiring fixing bracket, and tighten the bolt while crushing the wiring. For this reason, in a limited space, it is very difficult to turn the wrench with the other hand while holding the bolt and the wiring fixture with one hand.

また、限られたスペースに配線固定金具を配置するため、必然的に配線固定金具の押さえ幅が狭くなり、線材に過度な圧力がかかってしまう。これは、リード線などの引き出し線を曲げることができないため、モータの利便性を損なう恐れがある。また線材の切れや断線につながり、製品の信頼性を低下させる恐れがある。  Further, since the wiring fixing metal fittings are arranged in a limited space, the holding width of the wiring fixing metal fittings is inevitably narrowed, and excessive pressure is applied to the wire. This is because the lead wires and other lead wires cannot be bent, which may impair the convenience of the motor. In addition, the wire may be cut or broken, and the reliability of the product may be reduced.

また、ボルトの締め付け力で配線を固定するため、引き出し線が動かされたときには、ボルトに緩みが生じる恐れがある。これは、配線の断線、モータ回転部分への金具やボルトの落下(混入)といった事故につながる恐れがある。  Further, since the wiring is fixed by the tightening force of the bolt, there is a risk that the bolt will loosen when the lead wire is moved. This may lead to accidents such as disconnection of wiring and dropping (mixing) of metal fittings and bolts to the motor rotating part.

さらに、配線固定金具を固定するためのスペースを確保するために、モータハウジングの取り付け底面部に切り欠きを設ける場合には、はめ合い円の外周が少なくなり、モータの取り付け剛性が悪化することがある。
他の可撓体を取付ける場合にも同様な問題がある。
Furthermore, when a notch is provided on the bottom surface of the motor housing in order to secure a space for fixing the wiring fixing bracket, the outer circumference of the fitting circle is reduced and the motor mounting rigidity may deteriorate. is there.
There is a similar problem when attaching another flexible body.

本発明は、前記従来技術の課題に鑑みて為されたものであり、その目的は、配線等の可撓体の取り付け作業の効率を高めるとともに、電動機の信頼性を高めることにある。  The present invention has been made in view of the above-described problems of the prior art, and an object thereof is to increase the efficiency of attaching a flexible body such as a wiring and to improve the reliability of an electric motor.

前記目的を達成するために、本発明は、環状に形成されたステータの内周側に配置されるハウジングインナと、該ハウジングインナを固定され可撓性を有する長尺の可撓体とを備えた電動機において、前記ハウジングインナの外周面に形成された凹部と、前記凹部に装着可能に形成された可撓体固定部材とを備え、前記可撓体固定部材は、前記凹部に装着可能に形成された湾曲部と、前記湾曲部の一端側に前記湾曲部を間にして形成された一対の固定部材支持部と、前記湾曲部の他端側に前記湾曲部を間にして円弧状に形成された一対の可撓体支持部とから構成され、前記可撓体固定部材は、前記湾曲部が前記凹部に装着されて、前記ハウジングインナに固定され、前記可撓体は前記一対の可撓体支持部で支持されてなる電動機を構成したものである。  In order to achieve the above object, the present invention includes a housing inner disposed on the inner peripheral side of an annularly formed stator, and a long flexible body to which the housing inner is fixed and has flexibility. The electric motor includes a recess formed on an outer peripheral surface of the housing inner and a flexible body fixing member formed so as to be attachable to the recess, and the flexible body fixing member is formed so as to be attachable to the recess. And a pair of fixing member support portions formed on one end side of the bending portion with the bending portion interposed therebetween, and an arc shape with the bending portion interposed on the other end side of the bending portion. The flexible body fixing member is fixed to the housing inner with the bending portion mounted in the recess, and the flexible body is the pair of flexible body support members. A motor that is supported by the body support part It is.

前記電動機を構成するに際しては、前記可撓体の外周の一部には、前記一対の可撓体支持部との接触によりその移動が阻止される段差を形成することが望ましい。  When the electric motor is configured, it is desirable that a part of the outer periphery of the flexible body be formed with a step that is prevented from moving by contact with the pair of flexible body support portions.

前記した手段によれば、可撓体を可撓体固定部材の湾曲部に挿着すると、可撓体の外周側が可撓体支持部によって支持され、可撓体が可撓体固定部材に挿着されるので、可撓体の取り付け作業の効率を高めることができる。また、可撓体をハウジングインナに固定するときに、可撓体を押しつぶすなど、可撓体に機械的圧力を加えずに固定できるため、可撓体に傷がついたりするのを防止することができ、電動機の信頼性の向上に寄与することができる。さらに前記可撓体の外周の一部に前記一対の可撓体支持部との接触によりその移動が阻止される段差が、形成されてなると可撓体を可撓体固定部材から離れる方向に引っ張っても、可撓体の段差が可撓体支持部に引っかかり、可撓体のそれ以上の移動が阻止されるので、引っ張り力に対しても、可撓体を強固に保持することができる。
更に本発明の他の形態は、前記段差が前記可撓体の端部外周に被覆される熱収縮チューブにより形成されてなり、更に他の形態は、前記凹部が前記湾曲部が装着される第1凹部と、該第1凹部と交差し、前記固定部材支持部が収まる第2凹部とを有することを特徴とするものである。
According to the above-described means, when the flexible body is inserted into the bending portion of the flexible body fixing member, the outer peripheral side of the flexible body is supported by the flexible body support portion, and the flexible body is inserted into the flexible body fixing member. Since it is worn, the efficiency of the work of attaching the flexible body can be increased. In addition, when the flexible body is fixed to the housing inner, the flexible body can be fixed without applying mechanical pressure, such as crushing the flexible body, so that the flexible body is prevented from being damaged. Can contribute to the improvement of the reliability of the electric motor. Further, when a step is formed on a part of the outer periphery of the flexible body so that the movement is prevented by contact with the pair of flexible body support portions, the flexible body is pulled away from the flexible body fixing member. However, since the step of the flexible body is caught by the flexible body support portion and further movement of the flexible body is prevented, the flexible body can be firmly held against the pulling force.
In another embodiment of the present invention, the step is formed by a heat-shrinkable tube that covers the outer periphery of the end of the flexible body, and in another embodiment, the concave portion is attached to the curved portion. It has 1 recessed part and the 2nd recessed part which cross | intersects this 1st recessed part and the said fixing member support part fits.

本発明によれば、配線等の可撓体の取り付け作業の効率を高めるとともに、電動機の信頼性を高めることができる。  ADVANTAGE OF THE INVENTION According to this invention, while improving the efficiency of attachment work of flexible bodies, such as wiring, the reliability of an electric motor can be improved.

以下、本発明の第一の実施の形態を図面に基づいて説明する。図1は本発明の一実施例を示す外転型電動機の要部分解斜視図である。図1において、外転型電動機(以下、モータと称する。)10は、環状に形成されたステータ12(但し、ステータのコアに巻回されるコイル線は図示せず)と、ステータ12の内周側に配置された円筒状のハウジングインナ14を備えており、ステータ12の外周側には円筒状のロータ(図示せず)が配置されるようになっている。  Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view of a main part of an abduction motor showing one embodiment of the present invention. In FIG. 1, an outer rotation type electric motor (hereinafter referred to as a motor) 10 includes an annular stator 12 (however, a coil wire wound around a core of the stator is not shown), A cylindrical housing inner 14 is provided on the circumferential side, and a cylindrical rotor (not shown) is arranged on the outer circumferential side of thestator 12.

ハウジングインナ14の外周面には、円弧状の凹部16がハウジングインナ14の軸方向に沿って形成されているとともに、凹部16を間にして複数の取り付け穴(タップ穴)18が形成されている。この凹部16には、図2に示す可撓体固定部材としての配線固定金具20が挿着されるようになっている。なお、図1で14aは、ハウジングインナ14のモータ取り付け面である。  On the outer peripheral surface of the housing inner 14, an arc-shaped recess 16 is formed along the axial direction of the housing inner 14, and a plurality of mounting holes (tap holes) 18 are formed with therecess 16 in between. . Awiring fixture 20 as a flexible member fixing member shown in FIG. 2 is inserted into therecess 16. In FIG. 1, 14 a is a motor mounting surface of the housing inner 14.

モータ取り付け面14aに複数の取り付け穴(タップ穴)14bが設けられている。一方、外転型電動機10が固定されるモータ取り付けベース(図示せず)には、各取り付け穴14bに対応するようにボルト挿入穴が設けられる。外転型電動機10は、これらの取り付け穴14b及びボルト挿入穴を利用して、ボルトによりモータ取り付けベースに固定される。モータ取り付けベースには、必要に応じ、ハウジングインナ14の中空穴に連通する貫通穴や、ハウジシグインナ14に固定されるケーブル案内のために凹部16に連通して凹部あるいは貫通穴が、設けられる。  A plurality of mounting holes (tap holes) 14b are provided in themotor mounting surface 14a. On the other hand, the motor mounting base (not shown) to which theabduction motor 10 is fixed is provided with bolt insertion holes corresponding to themounting holes 14b. Theabduction motor 10 is fixed to the motor mounting base by bolts using thesemounting holes 14b and bolt insertion holes. The motor mounting base is provided with a through hole communicating with the hollow hole of the housing inner 14 and a concave portion or through hole communicating with theconcave portion 16 for guiding the cable fixed to the housing inner 14 as necessary.

配線固定金具20は、図2に示すように、凹部16に挿着可能に形成された湾曲部22と、湾曲部22の一端側に、湾曲部22を間にして形成された一対の固定部材支持部としての締結部材支持部24、26(以下固定部支持部とも呼ぶ)と、湾曲部22の他端側に、湾曲部22を間にして円弧状に形成された一対の可撓体支持部としての配線支持部28、30(以下、可撓体支持部とも呼ぶ)とから構成されており、締結部材支持部24、26にはそれぞれ締結部材挿入穴としてのボルト挿入穴32、34が形成されている。湾曲部22は、円弧状部として、その断面が円弧状に形成されており、この湾曲部22には、図3に示す可撓性を有するチューブ36が装着されるようになっている。  As shown in FIG. 2, thewiring fixing bracket 20 includes acurved portion 22 that can be inserted into theconcave portion 16, and a pair of fixing members that are formed on one end side of thecurved portion 22 with thecurved portion 22 therebetween. Fasteningmember support portions 24 and 26 (hereinafter also referred to as fixed portion support portions) as support portions, and a pair of flexible body supports formed in an arc shape on the other end side of thebending portion 22 with thebending portion 22 therebetween. Wiring supportportions 28 and 30 (hereinafter, also referred to as flexible body support portions) as parts, andbolt insertion holes 32 and 34 as fastening member insertion holes are provided in the fasteningmember support portions 24 and 26, respectively. Is formed. Thecurved portion 22 is formed in an arc shape as an arc-shaped portion, and theflexible tube 36 shown in FIG. 3 is attached to thecurved portion 22.

チューブ36は、例えば、ポリ塩化ビニル(PVC)を用いて、ステータ12のコイルに接続される複数のリード線38の外周側を覆うように構成されている。また、チューブ36の軸方向端部には、2mmから6mmの長さの熱収縮チューブ40が被覆されている。この熱収縮チューブ40を、110℃以上の熱風で熱収縮させることで、被覆されていない部分との間に約0.5mm程度段差が形成されるようになっている。この場合、チューブ36の外径は配線支持部28、30の内径とほぼ同じに形成されているので、チューブ36が湾曲部22に挿入して装着されたときに、チューブ36の軸方向への移動に伴って、熱収縮チューブ40により形成された段差が配線支持部28、30と接触したときには、チューブ36のそれ以上の移動が阻止されるようになっている。このため、リード線38が挿入されたチューブ36を配線固定金具20の湾曲部22に挿着したときに、チューブ36の軸方向への移動に伴って、可撓体支持部28、30と熱収縮チューブ40とが当接したときには、熱収縮チューブ40により形成された段差40Aが配線固定金具20に引っかかることで、チューブ36の抜けが防止されるようになっている。  Thetube 36 is comprised so that the outer peripheral side of the somelead wire 38 connected to the coil of thestator 12 may be covered using polyvinyl chloride (PVC), for example. Further, the end portion in the axial direction of thetube 36 is covered with aheat shrinkable tube 40 having a length of 2 mm to 6 mm. Theheat shrinkable tube 40 is heat shrunk with hot air of 110 ° C. or higher so that a step of about 0.5 mm is formed between the heat-shrinkable tube 40 and the uncovered portion. In this case, since the outer diameter of thetube 36 is formed to be substantially the same as the inner diameter of the wiring supportportions 28 and 30, when thetube 36 is inserted into thebending portion 22 and attached, thetube 36 extends in the axial direction. With the movement, when the step formed by theheat shrinkable tube 40 comes into contact with thewiring support portions 28 and 30, further movement of thetube 36 is prevented. For this reason, when thetube 36 into which thelead wire 38 is inserted is inserted into thebending portion 22 of thewiring fixture 20, the flexible body supportportions 28, 30 and thethermal support portions 28, 30 are heated together with the axial movement of thetube 36. When thecontraction tube 40 comes into contact, thestep 40 </ b> A formed by theheat contraction tube 40 is caught by thewiring fixture 20, thereby preventing thetube 36 from coming off.

なお、熱収縮チューブ40の収縮により、熱収縮チューブ40はPVC製のチューブ36に対して固定されるが、より強固に固定するために、熱収縮チューブとしてその内周面にチューブ36に対して優れた接着性を有する接着剤を塗布したものを用いると好ましい。また、図3(b)等に示すように、熱収縮チューブ40は、その一部のみがチューブ36を被覆し、残りの部分が複数のリード線38を取り巻くようにして、この状態で熱収縮させることにより、チューブ36とともに複数のリード線38も固定するようにすると好ましい。  The heat-shrinkable tube 40 is fixed to thePVC tube 36 due to the shrinkage of the heat-shrinkable tube 40. It is preferable to use a material coated with an adhesive having excellent adhesiveness. Further, as shown in FIG. 3B and the like, the heat-shrinkable tube 40 covers only thetube 36 and the remaining portion surrounds the plurality oflead wires 38. In this state, the heat-shrinkable tube 40 is heat-shrinkable. By doing so, it is preferable to fix the plurality oflead wires 38 together with thetube 36.

上記のようにして得られる、チーブ36、複数のリード線38及び熱収縮チューブ40からなるケーブル線が本実施の形態においてハウジングインナ14に固定される可撓体に相当する。  The cable wire composed of thetube 36, the plurality oflead wires 38 and theheat shrinkable tube 40 obtained as described above corresponds to a flexible body fixed to the housing inner 14 in the present embodiment.

次に、リード線38をステータ12から引き出すに際しては、図4に示すように、ハウジングインナ14の凹部16に配線固定金具20を挿着し、ボルト挿入穴32、34にそれぞれボルト42(本実施の形態では、六角穴付ボルトを用いているが他の各種ネジと代えてもよい。)挿入し、各ボルト42の先端側を取り付け穴18内に挿入し、ボルト42と取り付け穴18との締結により、配線固定金具20をハウジングインナ14の外周面に固定する。この時、締結部材支持部24,26は、ハウジングインナ14の円弧形状に合わせて弾性変形する。  Next, when thelead wire 38 is pulled out from thestator 12, as shown in FIG. 4, thewiring fixture 20 is inserted into therecess 16 of the housing inner 14, and the bolts 42 (this embodiment) are respectively inserted into the bolt insertion holes 32 and 34. In this embodiment, a hexagon socket head cap screw is used, but it may be replaced with other various screws.) Insert and insert the front end side of eachbolt 42 into the mountinghole 18 to connect thebolt 42 and the mountinghole 18 to each other. By fastening, thewiring fixture 20 is fixed to the outer peripheral surface of thehousing inner 14. At this time, the fasteningmember support portions 24 and 26 are elastically deformed according to the arc shape of thehousing inner 14.

このとき固定されるのは配線固定金具20のみなので、従来の場合のようにチューブやリード線と固定金具を押さえつけながら、固定金具をボルトで締め付ける必要がなく、ボルト42の締め付け作業は容易に行える。また、リード線38等を傷つける恐れもない。  At this time, since only thewiring fixing bracket 20 is fixed, it is not necessary to tighten the fixing bracket with a bolt while pressing the tube or the lead wire and the fixing bracket as in the conventional case, and thebolt 42 can be easily tightened. . Further, there is no risk of damaging thelead wires 38 and the like.

次に、図5に示すように、リード線38が挿入されたチューブ36のうち熱収縮チューブ40による段差から外れた部位を配線固定金具20の湾曲部22に挿着すると、チューブ36の外周側が可撓体支持部28、30によって支持され、チューブ36が配線固定金具20に挿着される。このあとチューブ36を配線固定金具20から離れる方向、すなわち上方に引っ張っても熱収縮チューブ40が配線支持部28、30に引っかかり、チューブ36のそれ以上の移動が阻止されるとともに、チューブ36およびリード線36を強固に保持することができる。この場合、段差による引張り耐力は25N以上確保できるようになっている。  Next, as shown in FIG. 5, when the portion of thetube 36 into which thelead wire 38 is inserted is removed from the step due to the heat-shrinkable tube 40 and is inserted into thecurved portion 22 of thewiring fixture 20, the outer peripheral side of thetube 36 is Thetube 36 is inserted into and attached to thewiring fixture 20 by being supported by the flexiblebody support portions 28 and 30. Thereafter, even if thetube 36 is pulled away from thewiring fixture 20, that is, upward, the heat-shrinkable tube 40 is caught on thewiring support portions 28 and 30, and further movement of thetube 36 is prevented. Thewire 36 can be held firmly. In this case, the tensile strength due to the step can be secured at 25 N or more.

また、配線固定金具20にチューブ36が挿着されたあと可撓体支持部28、30をチューブ36側(可撓体支持部28、30が成す環状の径方向)にカシメ加工することで、チューブ36をより強固に固定することもできる。  In addition, after thetube 36 is inserted into thewiring fixture 20, the flexiblebody support portions 28 and 30 are crimped to thetube 36 side (the annular radial direction formed by the flexiblebody support portions 28 and 30). Thetube 36 can also be fixed more firmly.

このカシメ加工は、すでにチューブ36が配線固定金具20を介してハウジングインナ14に固定された状態なので、容易に行える。なお、上記手順では、まず、配線固定金具20を凹部16に固定した後に、複数のリード線38が挿入されて端部に熱収縮チューブ40が固定された状態のチューブ36(ケーブル線)を固定するようにしたが、これに代え、まず複数のリード線38が挿入されて端部に熱収縮チューブ40が固定された状態のチュ一一ブ36に配線固定金具20を取り付け(ここで、熱収縮チューブ40のチューブ36への固定をチュ一ブ36への配線固定金具20の取り付けの後に行うようにしてもよい)、配線固定金具20を凹部36に固定するようにしても良い。この場合も、配線固定金20にチュープ36を取り付ける際には、配線固定具20は自由な状態であり、チューブ36やリード線38に無理な力が加わったり傷がついたりする恐れはない。また、チューブ36に取り付けられた状態の配線固定金具20を凹部16に固定する際には、配線固定金具20をチューブ36に対して押し付けたりする必要がないので、チューブ36やリード線38に無理なカが加わったり傷がついたりする恐れもない。ボルト42の締め付け作業も、金具を押さえつけながら行った従来の場合と比べ、容易に行うことができる。さらに、チューブ支持部28,30をチューブ36側にカシメ加工しても良いが、このカシメ作業も安全に行うことが容易である。  This caulking process can be easily performed because thetube 36 is already fixed to the housing inner 14 via thewiring fixture 20. In the above procedure, first, after fixing thewiring fixture 20 to therecess 16, the tube 36 (cable wire) in a state where the plurality oflead wires 38 are inserted and theheat shrinkable tube 40 is fixed to the end portion is fixed. However, instead of this, the wiring fixing metal fitting 20 is first attached to thetube 36 in a state in which the plurality oflead wires 38 are inserted and theheat shrinkable tube 40 is fixed to the end (here, the heat Theshrinkable tube 40 may be fixed to thetube 36 after thewiring fixture 20 is attached to the tube 36), or thewiring fixture 20 may be fixed to therecess 36. Also in this case, when thetube 36 is attached to thewiring fixing metal 20, thewiring fixing tool 20 is in a free state, and there is no fear that an excessive force is applied to thetube 36 or thelead wire 38 or damage is caused. Further, when the wiring fixing metal fitting 20 attached to thetube 36 is fixed to therecess 16, it is not necessary to press the wiring fixing metal fitting 20 against thetube 36. There is no danger of adding mosquitoes or scratching. The tightening operation of thebolt 42 can be easily performed as compared with the conventional case in which thebolt 42 is pressed. Further, thetube support portions 28 and 30 may be crimped to thetube 36 side, but this crimping operation is easy to perform safely.

本実施例によれば、リード線38が挿入されたチューブ36のうち熱収縮チューブ40との段差部から外れた部位を配線固定金具20の湾曲部22に挿着すると、チューブ36の外周側が可撓体支持部28、30によって支持され、チューブ36が配線固定金具20に挿着されるので、配線の取り付け作業の効率を高めることができる。  According to the present embodiment, when the portion of thetube 36 into which thelead wire 38 is inserted is removed from the stepped portion with respect to theheat shrinkable tube 40, the outer peripheral side of thetube 36 is allowed. Since thetube 36 is inserted into and attached to thewiring fixing bracket 20 by being supported by the flexiblebody supporting portions 28 and 30, the efficiency of wiring attachment work can be increased.

また、本実施例によれば、リード線38をハウジングインナ14に固定するときに、リード線38を押しつぶすなど、リード線38に機械的圧力を加えずに固定できるため、リード線38が断線したり、曲がったりするのを防止することができ、モータ10の信頼性の向上に寄与することができる。  Further, according to the present embodiment, when thelead wire 38 is fixed to the housing inner 14, thelead wire 38 can be fixed without applying mechanical pressure, such as crushing thelead wire 38. Can be prevented, and can contribute to the improvement of the reliability of themotor 10.

さらに、本実施例によれば、チューブ36を配線固定金具20から離れる方向に引っ張っても、チューブ36の熱収縮チューブ40による段差が配線支持部28、30に引っかかり、チューブ36のそれ以上の移動が阻止されるので、引っ張り力に対しても、熱収縮チューブ36およびリード線38を強固に保持することができる。  Furthermore, according to the present embodiment, even when thetube 36 is pulled away from thewiring fixing bracket 20, the step due to theheat shrinkable tube 40 of thetube 36 is caught on thewiring support portions 28 and 30, and thetube 36 is moved further than that. Therefore, the heat-shrinkable tube 36 and thelead wire 38 can be firmly held against a pulling force.

次にハウジングインナに設けられる凹部の形状が上記第1の実施の形態と異なる第2の実施の形態を示す。図6は第2の実施の形態の外転型電動機のハウジングインナにステータ(コイル巻線は図示せず)及び配線固定金具を取り付けた状態の要部を示す図であり、(a)はハウジングインナの軸方向一端蔀から見た場合の要部を、(b)は凹部を正面から見た場合の要部を示す。  Next, a second embodiment in which the shape of the recess provided in the housing inner is different from the first embodiment will be described. FIG. 6 is a view showing a main part in a state in which a stator (coil winding is not shown) and a wiring fixing bracket are attached to a housing inner of an abduction type electric motor according to a second embodiment. (B) shows the main part when the concave part is viewed from the front side.

前期第1の実施の形態では、凹部16は、ハウジングインナ14のモータ取り付け面の外周側端面から軸方向に沿って所定の深さに設けられた断面円弧状の溝であり、配線固定金具20の湾曲部22の部分が凹部16に装着される場合を示した。これに対し、第2の実施の形態で1は、凹部116は、ハウジングインナ14のモータ取り付け面側端面から軸方向に沿って所定の深さに設けられた断面略U宇状の第1凹部116aと、ハウジングィンナ14のモータ取り付け面側端面から所定の距離だけ離れた位置に設けられ、第1凹部116aと交差して設けられる一対の第2凹部116b、116cとよりなる。その他の構成は上記第1の実施形態の場合と共通であるので、以下は異なる部分のみを述べる。  In the first embodiment, therecess 16 is a groove having an arcuate cross section provided at a predetermined depth along the axial direction from the outer peripheral end surface of the motor mounting surface of thehousing inner 14. The case where thecurved portion 22 is attached to therecess 16 is shown. On the other hand, in the second embodiment, the firstconcave portion 116 has a substantially U-shaped cross section provided at a predetermined depth along the axial direction from the end surface on the motor mounting surface side of thehousing inner 14. 116a and a pair ofsecond recesses 116b and 116c provided at a position away from the end surface on the motor mounting surface side of the housing inner 14 by a predetermined distance and provided to intersect thefirst recess 116a. Since other configurations are the same as those in the first embodiment, only different parts will be described below.

第1凹部116aの軸方向と直交する断面での断面形状は、円弧状の部分の半径は配線固定金具20の湾曲部及びチューブ支持部の外径と略等しく、溝底までの深さは、配線固定金具20を装着した際に、ハウジングインナ14の外周面から配線固定金具20が突出しない範囲でできるだけ浅い深さとなるような形状である。  The cross-sectional shape in the cross section orthogonal to the axial direction of thefirst recess 116a is such that the radius of the arc-shaped portion is substantially equal to the outer diameter of the curved portion of thewiring fixing bracket 20 and the tube support portion, and the depth to the groove bottom is When the wiring fixing metal fitting 20 is mounted, the depth is as shallow as possible within a range in which the wiring fixing metal fitting 20 does not protrude from the outer peripheral surface of thehousing inner 14.

一対の第2凹部116b、116cは、第1凹部116aを間に挟んで対称に設けられている。一対の第2凹部116b、116cの底部は、図6(a)に示されるように、平面状で、かつ、互いに同一平面上にあるように形成されている。一対の第2凹部116b、116cの底部の深さは、図6(a)に示されるように、配線固定金具20を凹部116に取り付けた際に、湾曲部22の外周面と凹部116aとの間、固定部材支持部24の取り付け面と第2凹部116bとの間、及び、固定部材支持部26の取り付け面と第2凹部116cとの間が、いずれも略すきまのない状態となる深さである。また、ハウジングインナ14のモータ取り付け面側端面から、一対の第2凹部116b、116cのモータ取り付け面側寄りの端部までの距離は、図6(b)に示されるように、配線固定金具20のチユーブ支持部側端面から、固定部材支持部24、26のチューブ支持部側端面寄りの端部までの距離と略等しく設定されている。  The pair ofsecond recesses 116b and 116c are provided symmetrically with thefirst recess 116a interposed therebetween. As shown in FIG. 6A, the bottoms of the pair ofsecond recesses 116b and 116c are formed to be planar and on the same plane. As shown in FIG. 6A, the depth of the bottom of the pair ofsecond recesses 116b and 116c is determined between the outer peripheral surface of thecurved portion 22 and therecess 116a when thewiring fixing bracket 20 is attached to therecess 116. The depth at which the gap between the mounting surface of the fixingmember support portion 24 and thesecond recess 116b and the mounting surface of the fixingmember support portion 26 and thesecond recess 116c are substantially free of clearance. It is. Further, the distance from the end surface on the motor mounting surface side of the housing inner 14 to the end portion on the motor mounting surface side of the pair ofsecond recesses 116b and 116c is as shown in FIG. This distance is set to be approximately equal to the distance from the tube support portion side end surface to the end portions of the fixingmember support portions 24 and 26 near the tube support portion side end surface.

凹部116を上記のようにしたことにより、図6(b)にも示したとおり、配線固定金具20や取り付け用のボルト42がハウジングインナ14の外周面から突出することがなく、電動機10全体としての小型化に寄与する。なお、第2凹部116b、116cを平面状とする代わりに、例えば、円周方向に沿った一定の深さの溝としても良い。この場合、固定部材支持部24、26は溝底に対応する円弧状としてもよい。  Since therecess 116 is configured as described above, thewiring fixture 20 and the mountingbolt 42 do not protrude from the outer peripheral surface of the housing inner 14 as shown in FIG. Contributes to downsizing. Instead of making thesecond recesses 116b and 116c planar, for example, a groove having a certain depth along the circumferential direction may be used. In this case, the fixingmember support portions 24 and 26 may have an arc shape corresponding to the groove bottom.

この場合も、配線固定金具等がハウジングインナ14の外周面から突出しないようにするのが好ましい。なお、上記各実施の形態では、ハウジングインナ14に配線固定金具20を固定するのにポルド等固定ねじを用いたが、これに限らず、例えば、金属同士の接着が可能な接着剤(例えばエポキシ系の接着剤)により固定部材支持部24、26をハウジングインナ14に固定するようにしてもよい。また、上記第2の実施の形態の場合のように第2凹部を有する場合には、別途、適宜の手段により配線固定金具20が径方向に移動するのを防止できれば、固定部材支持部24、26をハウジングインナ14に固定しなくてもよい。すなわち、この場合、ケーブル線を軸方向に抜くようなカが作用しても、固定部材支持部24、26が、第2凹部があることでハウジングインナ14に形成される段差によってケーブル線が引き抜かれることが阻止される。なお、上記各実施の形態では、ハウジングインナ14に固定する可撓体として、給電用のり一ド線やセンサ用のリード線をチューブで覆ったケーブル線の場合について示したが、例えば空冷用等のエア供給のためのチューブ等、他の可撓体をハウジングインナ14に固定する場合にも本発明は適用できる。  Also in this case, it is preferable that the wiring fixing metal fittings do not protrude from the outer peripheral surface of thehousing inner 14. In each of the above embodiments, a fixing screw such as a pole is used to fix thewiring fixture 20 to thehousing inner 14. However, the present invention is not limited to this. For example, an adhesive (for example, epoxy) that can bond metals together. The fixingmember support portions 24 and 26 may be fixed to the housing inner 14 by a system adhesive). Further, in the case of having the second recess as in the case of the second embodiment, if the wiring fixing metal fitting 20 can be prevented from moving in the radial direction by appropriate means, the fixingmember support portion 24, 26 may not be fixed to thehousing inner 14. That is, in this case, even if a force that pulls the cable wire in the axial direction acts, the fixingmember support portions 24 and 26 are pulled out by the step formed in the housing inner 14 due to the second recess. Is prevented. In each of the above embodiments, the case where the flexible body fixed to the housing inner 14 is a cable wire in which a feeding lead wire or a sensor lead wire is covered with a tube has been described. The present invention can also be applied to the case where another flexible body such as a tube for supplying air is fixed to thehousing inner 14.

また、上記各実施の形態では、熱収縮チューブを被覆することによりチューブ36の端部に段差を設けるようにしたが、これに限らず、例えば、他のチューブを重ねて固定したり、チューブとして端部が段差状に成形された樹脂成型品を用いたりすることにより、段差を設けるようにしてもよい。また、上記各実施の形態のようにケーブル線に段差を設けることは、万一ケーブル線が引き抜かれるようなカが作用しても、ケーブル線の段差の部分が可撓体材支持部に引っかかることにより、簡単な構成によってケーブル線が引き抜かれることが確実に阻止されるため好ましいが、このようなカが作用する恐れがない場合であれば、段差は必ずしも設けなくてもよい。  In each of the above embodiments, a step is provided at the end of thetube 36 by covering the heat-shrinkable tube. However, the present invention is not limited to this. For example, another tube may be stacked and fixed, or You may make it provide a level | step difference by using the resin molded product by which the edge part was shape | molded by the level | step difference shape. In addition, providing a step in the cable line as in each of the above embodiments means that the step part of the cable line is caught by the flexible material support portion even if the cable wire is pulled out. Thus, it is preferable because the cable wire is surely prevented from being pulled out by a simple configuration, but the step may not necessarily be provided if there is no fear of such a force acting.

また、上記各実施の形態で示した凹部16(116)及び配線固定金具20等からなる配線の固定構造をハウジングインナの複数箇所に設けるようにしてもよい。例えば、ハウジングインナ14のモータ取り付け面14aの対角線上に2箇所設け、一方を給電用、すなわちステータ12のコイル巻線等に接続されるリード線群のために用い、他方をセンサ用、例えばレゾルバや光学式エンコーダ等の回転位置検出用のセンサに接続されるリード線群のために用いるようにしても良い。そのような例を示す本発明の外転型電動機の取り付け状態の一例の概略を図7に、使用されるモータ取り付けベースの概略を図8に示す。モータ取り付けベース700は、図7でモータ取り付けベース700の下側からハウジングインナのモータ取り付け面14aにボルト704により締結される。図7において、702はステータ12の外周側配置されるロータハウジングである。さらに、図8に示すように、モータ取付けベース700の凹部716は、ハウジングインナ14の凹部16(又は116)の位置に対応するように対角線上に2箇所設け、一方を給電用リード線群のために用いられ、他方をセンサ用、例えばレゾルバや光学式エンコーダ等の回転位置検出用のセンサに接続されるリード線群のために用いられている。ボルト704用の貫通孔714bは、ハウジングインナ14の取付け穴14bに対応するように60°均等に配置されている。  In addition, a wiring fixing structure including the concave portion 16 (116) and the wiring fixing metal fitting 20 shown in the above embodiments may be provided at a plurality of locations of the housing inner. For example, two locations are provided on the diagonal of themotor mounting surface 14a of the housing inner 14, and one is used for power feeding, that is, for a group of lead wires connected to the coil winding of thestator 12, and the other is used for a sensor, for example, a resolver. Alternatively, it may be used for a group of lead wires connected to a rotational position detection sensor such as an optical encoder. FIG. 7 shows an outline of an example of the mounting state of the abduction motor of the present invention showing such an example, and FIG. 8 shows an outline of the motor mounting base used. Themotor mounting base 700 is fastened to themotor mounting surface 14a of the housing inner from the lower side of themotor mounting base 700 withbolts 704 in FIG. In FIG. 7,reference numeral 702 denotes a rotor housing disposed on the outer peripheral side of thestator 12. Further, as shown in FIG. 8, therecess 716 of themotor mounting base 700 is provided at two positions on the diagonal line so as to correspond to the position of the recess 16 (or 116) of the housing inner 14, and one of them is the power supply lead group. The other is used for a lead wire group connected to a sensor, for example, a rotational position detection sensor such as a resolver or an optical encoder. The throughholes 714b for thebolts 704 are equally arranged at 60 ° so as to correspond to the mountingholes 14b of thehousing inner 14.

本発明の第1の実施の形態を示す電動機の要部分解斜視図。The principal part disassembled perspective view of the electric motor which shows the 1st Embodiment of this invention.配線固定金具の構成を説明するための図であって、(a)は上面図、(b)は正面図、(c)は(b)のA−A線に沿う断面図、(d)は側面図。It is a figure for demonstrating the structure of a wiring fixing metal, Comprising: (a) is a top view, (b) is a front view, (c) is sectional drawing which follows the AA line of (b), (d) is Side view.リード線を被うチューブと熱収縮チューブとリード線とよりなるケーブル線を説明するための図であって、(a)はチューブの端部に熱収縮チューブを被せた状態の斜視図、(b)はチューブにリード線が挿入されさらに熱収縮チューブを被せて熱収縮させた状態の斜視図、(c)はケーブル線を配線固定金具に取り付けた状態のケーブル線を示す斜視図。It is a figure for demonstrating the cable wire which consists of the tube which covers a lead wire, a heat contraction tube, and a lead wire, Comprising: (a) is a perspective view of the state which covered the heat contraction tube on the edge part of a tube, (b) ) Is a perspective view of a state in which a lead wire is inserted into the tube and further heat-shrinked with a heat-shrinkable tube, and FIG.ハウジングインナに配線固定金具を取り付けた状態を示す電動機の分解斜視図。The exploded perspective view of the electric motor which shows the state which attached the wiring fixing metal fitting to the housing inner.ハウジングインナに配線固定金具とケーブル線を固定したときの状態を示す斜視図。The perspective view which shows a state when fixing a wiring fixing metal fitting and a cable wire to a housing inner.本発明の第2の実施の形態を示す電動機の要部を示す図で(a)は上面図、(b)は正面図。It is a figure which shows the principal part of the electric motor which shows the 2nd Embodiment of this invention, (a) is a top view, (b) is a front view.本発明の電動機をモータ取付ベースに取付けた状態の概略を示す側面図。The side view which shows the outline of the state which attached the electric motor of this invention to the motor attachment base.図7に示すモータ取付ベースの底面図。The bottom view of the motor attachment base shown in FIG.

符号の説明Explanation of symbols

10 モータ
12 ステータ
14 ハウジングインナ
16 凹部
18 取り付け穴
20 配線固定金具
22 湾曲部
24、26 固定材支持部
28、30 可撓体支持部
32、34 ボルト挿入穴
36 チューブ
38 リード線
40 熱収縮チューブ

DESCRIPTION OFSYMBOLS 10Motor 12Stator 14 Housing inner 16 Recessedpart 18 Mountinghole 20Wiring fixing bracket 22Bending part 24, 26 Fixingmaterial support part 28, 30 Flexiblebody support part 32, 34Bolt insertion hole 36Tube 38Lead wire 40 Heat shrinkable tube

Claims (4)

Translated fromJapanese
環状に形成されたステータの内周側に配置されるハウジングインナと、該ハウジングインナに固定され、可撓性を有する長尺の可撓体とを備えた電動機において、前記ハウジングインナの外周面に形成された凹部と、前記凹部に装着可能に形成された可撓体固定部材とを備え、前記可撓体固定部材は、前記凹部に装着可能に形成された湾曲部と、前記湾曲部の一端側に前記湾曲部を間にして形成された一対の固定部材支持部と、前記湾曲部の他端側に前記湾曲部を間にして円弧状に形成された一対の可撓体支持部とから構成され、前記可撓体固定部材は、前記湾曲部が前記凹部に装着されて、前記ハウジングインナに固定され、前記可撓体は前記一対の可撓体支持部で支持されてなることを特徴とする電動機。An electric motor comprising a housing inner disposed on the inner peripheral side of a ring-shaped stator, and a long flexible body fixed to the housing inner and having flexibility, on the outer peripheral surface of the housing inner A recessed portion formed, and a flexible body fixing member formed so as to be attachable to the recessed portion, wherein the flexible body fixing member includes a curved portion formed so as to be attachable to the recessed portion, and one end of the curved portion. A pair of fixing member support portions formed on the side with the bending portion therebetween, and a pair of flexible body support portions formed in an arc shape with the bending portion on the other end side of the bending portion. The flexible body fixing member is configured such that the curved portion is mounted in the concave portion and fixed to the housing inner, and the flexible body is supported by the pair of flexible body support portions. Electric motor.前記可撓体の外周の一部には、前記一対の可撓体支持部との接触によりその移動が阻止される段差が形成されてなることを特徴とする請求項1に記載の電動機。2. The electric motor according to claim 1, wherein a part of an outer periphery of the flexible body is formed with a step that is prevented from moving by contact with the pair of flexible body support portions.前記段差が前記可撓体の端部外周に被覆される熱収縮チューブにより形成されてなる請求項2の電動機。The electric motor according to claim 2, wherein the step is formed by a heat-shrinkable tube that covers an outer periphery of an end of the flexible body.前記凹部は前記湾曲部が装着される第1凹部と、該第1凹部と交差し、前記固定部材支持部が収まる第2凹部とを有する請求項1乃至3のいずれか1項記載の電動機。

4. The electric motor according to claim 1, wherein the concave portion includes a first concave portion in which the curved portion is mounted, and a second concave portion that intersects the first concave portion and accommodates the fixing member support portion.

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