JPS62118792A - Commutator motor - Google Patents

Abstract

PURPOSE:To eliminate wasteful power consumption by providing an electromagnet which rotates a brush holder reversely to the rotating direction of an armature to obtain a strong attracting force when a load becomes heavy and to reduce an input at standby time. CONSTITUTION:A brush holder 27 rotatably elastically supported along the rotating direction of a commutator 25, an iron piece 34 provided at a part of the holder 27, and an electromagnet 35 for attracting the iron piece disposed near the piece 34 to rotate the holder 27 reversely to the rotating direction of an armature are provided. The electromagnet 35 is energized in the state that the load of the motor becomes heavy to pivot the holder 27 reversely to the rotating direction of the armature to increase the input of a motor, thereby obtaining a strong attracting force. When the fact that the load of the motor becomes light is detected, the electromagnet 35 is deenergized to reduce the input of the motor.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は電気掃除機などに使用される送風機用の整流予
電＃ｈ機に関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a rectifier pre-energizer #h for a blower used in a vacuum cleaner or the like.

従来の技術 従来、この種の整流予電ｖＪ機は、第１５図に示すよう
に電動機本体１の一端に吸込用ファン部２が、他端には
電機子３を支える軸受部４がそれぞれ設けられている。2. Description of the Related Art Conventionally, this type of rectifying and pre-charging VJ machine has a suction fan section 2 at one end of a motor main body 1 and a bearing section 4 supporting an armature 3 at the other end, as shown in FIG. It is being

５は前記電機子３に設けられた整流子、６はこの整流子
５に給電するブラシで、ブラシホルダ７内に保持されて
いる。このブラシホルダ７は電動機本体１に固着されて
おり、その内部にバネ８を設け、バネ８がブラシ６を整
流子５に押し付けている。９は電機子３の周囲に位置し
た界磁である。5 is a commutator provided on the armature 3, and 6 is a brush for feeding power to the commutator 5, which is held in a brush holder 7. This brush holder 7 is fixed to the motor main body 1, and a spring 8 is provided inside the brush holder 7, and the spring 8 presses the brush 6 against the commutator 5. 9 is a field located around the armature 3.

電圧を印加すると、電流は界ｆ４１９を通りブラシ６を
通った後、整流子５によって整流され、電機子３を流れ
て電機子３が高速回転する。これにより電機子３に固着
された吸込用ファン部２のファンが回転して、空気は吸
込用ファン部２へ吸い込まれ、電動機本体１内を冷却し
て反対側へ放出される。When a voltage is applied, the current passes through the field f419 and the brush 6, is then rectified by the commutator 5, flows through the armature 3, and the armature 3 rotates at high speed. As a result, the fan of the suction fan section 2 fixed to the armature 3 rotates, and air is sucked into the suction fan section 2, cools the inside of the motor body 1, and is discharged to the opposite side.

発明が解決しようとする問題点 しかし、このような従来の電動機の場合、第１６図に示
すように電動機の入力と吸込用ファン部２を流れるｆｆ
１ｆｆｉとの関係は、ｆｆ１ｆｆｉが少ないほど入力が
低くなる特性を持つ。Problems to be Solved by the Invention However, in the case of such a conventional electric motor, as shown in FIG.
The relationship with 1ffi has a characteristic that the smaller ff1ffi is, the lower the input is.

つまり、電気袢除機の電動送風機に使用した場合、掃除
の途中に床ノズルを空中に浮かせると、吸込ｆｆ１ｆｆ
ｉが多くなり、電動機の入力は高くなり（第１６図Ａ点
）、掃除をするために床ノズルを被掃除面に付けると電
動機の入力は低くなる（第１６図Ｂ点）、すなわち、実
際に掃除を行うと電動機の入力が低くなって、その分だ
け吸込力が低下し、実際の掃除を行なわないときパノノ
が高く無駄な電力消費が行なわれるという欠点があった
。In other words, when used with the electric blower of an electric floor remover, if the floor nozzle is suspended in the air during cleaning, the suction ff1ff
As i increases, the input to the motor becomes higher (point A in Figure 16), and when the floor nozzle is attached to the surface to be cleaned for cleaning, the input to the motor becomes lower (point B in Figure 16). If cleaning is performed during the cleaning period, the input power of the electric motor is lowered, and the suction power is reduced by that amount, and when the actual cleaning is not performed, the pano noise is high and power consumption is wasted.

本発明は上記のように電気掃除はの場合には、実際に掃
除を行う時の電動機の入力低下を防いで吸込み力を強く
することが出来る整流子電動機を提供することを目的と
する。As described above, an object of the present invention is to provide a commutator motor that can prevent a decrease in the input power of the motor during actual cleaning and increase the suction force in the case of electric cleaning.

問題点を解決するための手段 本発明の整流子電動機は、ファンと連結した電機子と、
この電機子と一体に回転する整流子と、この整流子に当
接して給電するブラシと、このブラシを保持すると共に
整流子の回転方向に沿って回動可能に弾性支持されたブ
ラシホルダと、このブラシホルダの一部に設けられた吸
着片と、この吸着片の近くに配設され吸着片を吸着して
前記ブラシホルダを電機子の回転方向とは逆方向に回動
させる電磁石とを設けたことを特徴とする。Means for Solving the Problems The commutator motor of the present invention includes an armature connected to a fan;
A commutator that rotates together with the armature, a brush that contacts the commutator to supply power, and a brush holder that holds the brush and is elastically supported so as to be rotatable along the rotational direction of the commutator. A suction piece provided on a part of the brush holder, and an electromagnet disposed near the suction piece to attract the suction piece and rotate the brush holder in a direction opposite to the direction of rotation of the armature. It is characterized by:

作用 この構成によると、電ｖＪｌｉの負荷が重くなったこと
を検出して電磁石に通電すると、ブラシホルダが電機子
の反回転方向に回動して、整流子におけるブラシ当接位
置が反回転方向にずれてｆｆｉ　ｖＪＩＩＩの入力が大
ぎくなり、電動機の負荷が軽くなったことを検出して電
磁石への通電をオフすると電動機の入力が小さくなる。Effect: According to this configuration, when it is detected that the load of the electric current vJli has become heavy and the electromagnet is energized, the brush holder rotates in the counter-rotational direction of the armature, and the brush contact position on the commutator changes in the counter-rotational direction. When it is detected that the load on the motor has become lighter and the power to the electromagnet is turned off, the input to the motor becomes smaller.

実施例 以下、本発明の実施例を第１図〜第１４図に基づいて説
明する。Embodiments Hereinafter, embodiments of the present invention will be described based on FIGS. 1 to 14.

第１図〜第３図は本発明の第１の実施例を示す。1 to 3 show a first embodiment of the present invention.

２１は電動機本体で、その一端には吸込ファン（図示せ
ず）を内蔵した吸込用ファン部２２が、他端には電機子
２３を支持する軸受部２４がそれぞれ設けられている。Reference numeral 21 denotes a motor main body, and one end thereof is provided with a suction fan section 22 containing a suction fan (not shown), and the other end is provided with a bearing section 24 that supports an armature 23.

２５は電機子２３に設けられた整流子、２Ｇはこの整流
子２５に給電するブラシで、ブラシホルダ２７内に保持
されるとともにバネ２８によって整流子２５に押し付け
れられている。ブラシホルダ２７は円環状の絶縁材２９
に取り付けられ、電ｖＪ１１本体２１のブラケット３０
に設けた穴３１に遊嵌している。穴３１はその縁部が絶
縁材３２によって覆われている。25 is a commutator provided on the armature 23, and 2G is a brush for feeding power to the commutator 25, which is held in the brush holder 27 and pressed against the commutator 25 by a spring 28. The brush holder 27 is made of an annular insulating material 29
It is attached to the bracket 30 of the electric vJ11 main body 21.
It fits loosely into a hole 31 provided in the hole 31. The edge of the hole 31 is covered with an insulating material 32.

円環状の絶縁材２９はバネ３３によって電ｖＪ機本体２
１に弾性的に保持され、その一部に鉄片３４が設けであ
る。鉄片３４の近くに電磁石３５が設置され、この電磁
石３５には第３図のように電動機に流れる電流を検出す
る検出装＠３６と制ｍ＋装置３７により、電流が減少す
ると電力が供給されてるように構成されている。The annular insulating material 29 is attached to the electric VJ machine body 2 by the spring 33.
1, and a part of it is provided with an iron piece 34. An electromagnet 35 is installed near the iron piece 34, and as shown in Figure 3, this electromagnet 35 is supplied with electric power by a detection device 36 that detects the current flowing to the motor and a control device 37 when the current decreases. It is composed of

次に、この第１の実施例の整流子電動機を電動送風□に
使用した電気棉除機の場合を例に挙げて動作を説明する
。Next, the operation will be explained by taking as an example the case of an electric cotton removing machine in which the commutator motor of the first embodiment is used for the electric blower.

電気棉除機を運転して床ノズルを空中に浮かせると、吸
込風聞が多いため吸込ファンは高負荷となり、電機子２
３の回転数が低くなる。そして整流予電動機の特性とし
て入力が増加、つまり電流が増加する。このため電磁石
３５には電力が供給されず、磁力が働かないため鉄片３
４は電磁石３５へ吸引されない。矢印爪方向はｆｆ１ｆ
ｉ子２３の回転方向を示し、！ｉｉ流了２５へは第１図
実線で示すブラシ位置より電流が供給される。When the electric cotton remover is operated and the floor nozzle is suspended in the air, the suction fan becomes under high load due to the large amount of suction air, and the armature 2
3 rotation speed becomes low. As a characteristic of the rectified premotor, the input increases, that is, the current increases. Therefore, no power is supplied to the electromagnet 35, and no magnetic force is applied to the iron piece 3.
4 is not attracted to the electromagnet 35. The direction of the arrow claw is ff1f
Indicates the direction of rotation of the i-child 23, ! ii. Current is supplied to the flow end 25 from the brush position shown by the solid line in FIG.

次に床ノズルを被掃除面に付けて掃除を行なうと、吸込
風量が低下するため吸込ファンは軽負荷となり、電機子
２３は回転数が上行し、入力が低下しそして電流が減少
する。このため、電磁石３５へ電力が供給され、電磁石
３５の磁力が強くなる。これにより鉄片３４は電磁石３
５へ吸引され、円環状の絶縁材２９はバネ３３に抗して
矢印Ｂ方向に回転すし、整流子２５へは第１図破線で示
すブラシ位置より電流が供給され、ブラシ位置が電機子
２３の反回転方向へずれると、電動機の入力は高くなり
、吸込力は向上する。Next, when cleaning is performed by attaching the floor nozzle to the surface to be cleaned, the suction air volume decreases, so the suction fan becomes a light load, the rotation speed of the armature 23 increases, the input decreases, and the current decreases. Therefore, electric power is supplied to the electromagnet 35, and the magnetic force of the electromagnet 35 becomes stronger. As a result, the iron piece 34 becomes the electromagnet 3
5, the annular insulating material 29 rotates in the direction of arrow B against the spring 33, and current is supplied to the commutator 25 from the brush position indicated by the broken line in FIG. Shifting in the opposite direction of rotation increases the input to the motor and improves the suction force.

第４図〜第６図は第２の実施例を示す。第１の実施例で
は電１１１Ｉ機の電流を検出装置３６で検出して電磁石
３５への通電を制御したが、第２の実施例では回転数セ
ンサ１３Ｇを使用している点が第１の実施例とは異なる
。１２１は電ｖＪｖ１本体で、その一端には吸込ファン
（図示せず）を内蔵した吸込ファン部１２２が、他端に
は電機子１２３を支持する軸受部１２４がそれぞれ設け
られている。１２５は′Ｆｉｍ子１２３に設けられた整
流子、１２６はこの整流子１２５に給電するブラシで、
ブラシホルダ１２７内に保持されるとともにバネ１２８
によって整流子１２５に押し付けられている。ブラシホ
ルダ１２７は円環状の絶縁材１２９に取り付けられ、７
１動機本体１２１のブラケット　１３Ｇに設けた穴１３
１にＭｋ）ｌている。穴１３１はその縁部が絶縁材１３
２によって覆われている。円環状の絶縁材１２９１よバ
ネ１３３によって電動機本体１２１に弾性的に保持され
、その一部に鉄片１３４が設けである。鉄片１３４の近
くに電磁石１３５が設置され、この電磁石１３５には電
機子１２３の回転数を感知する回転数センサ１３６の信
号を検出する制６０装［１３７から電機子１２３の回転
数が上昇すると電力が供給されるように構成されている
。4 to 6 show a second embodiment. In the first embodiment, the current of the electric motor 111I was detected by the detection device 36 to control the energization to the electromagnet 35, but in the second embodiment, the rotation speed sensor 13G is used. Different from the example. Reference numeral 121 denotes the electric vJv1 main body, and one end thereof is provided with a suction fan section 122 containing a suction fan (not shown), and the other end is provided with a bearing section 124 that supports an armature 123. 125 is a commutator provided in the fim element 123, 126 is a brush that supplies power to this commutator 125,
Retained within brush holder 127 and loaded with spring 128
is pressed against the commutator 125 by. The brush holder 127 is attached to an annular insulating material 129, and
1 Hole 13 provided in bracket 13G of motive body 121
1 has Mk)l. The edge of the hole 131 is covered with the insulating material 13
covered by 2. An annular insulating material 1291 is elastically held on the motor main body 121 by a spring 133, and an iron piece 134 is provided in a part thereof. An electromagnet 135 is installed near the iron piece 134, and this electromagnet 135 is equipped with a control device that detects a signal from a rotation speed sensor 136 that detects the rotation speed of the armature 123. is configured to be supplied.

次に、この第２の実施例の整流子電動機を電動送Ｆ！Ａ
機に使用した電気掃除機の場合を例に挙げて動作を説明
する。Next, the commutator motor of this second embodiment is electrically fed F! A
The operation will be explained using an example of a vacuum cleaner used in a vacuum cleaner.

電気掃除機を運転し、床ノズルを空中に浮かせると、吸
込８ａ量が多いため吸込ファンは高負荷となり、電機子
１２３の回転数は低い。このため電磁石１３５には電力
が供給されず磁力が働かず、鉄片１３４は電磁石１３５
へ吸引されない。矢印爪方向は７１Ｂ１子１２３の回転
方向を示し、整流子１２５へは第４図実線で示すブラシ
位置より電流が供給される。When the vacuum cleaner is operated and the floor nozzle is suspended in the air, the suction fan has a high load due to the large amount of suction 8a, and the rotation speed of the armature 123 is low. Therefore, no power is supplied to the electromagnet 135 and no magnetic force acts, and the iron piece 134
is not attracted to. The direction of the arrow claw indicates the rotation direction of the 71B1 element 123, and current is supplied to the commutator 125 from the brush position shown by the solid line in FIG.

次に床ノズルを被掃除面に付けて掃除を行うと、吸込風
量が低下するため吸込ファンは軽負荷となり、電機子１
２３は高速回転する。このため電磁石１３５へ電力が供
給され電磁石１３５の磁力が強くなる。これにより鉄片
１３４は電磁石１３５へ吸引され、円環状の絶縁材１２
９はバネ１３３に抗して矢印Ｂ方向に回転し、整流子１
２５へは第４図破線で示すブラシ位置より電流が供給さ
れ、ブラシ位置が＝ａ子１２３の反回転方向へずれると
、ｆｆ１ｖＪｔｆｆｉ　１２１の入力は高くなり、吸込
力は向上する。Next, when cleaning is performed by attaching the floor nozzle to the surface to be cleaned, the suction air volume decreases, so the suction fan has a light load, and the armature 1
23 rotates at high speed. Therefore, electric power is supplied to the electromagnet 135, and the magnetic force of the electromagnet 135 becomes stronger. As a result, the iron piece 134 is attracted to the electromagnet 135, and the annular insulating material 12
9 rotates in the direction of arrow B against the spring 133, commutator 1
25 is supplied with current from the brush position shown by the broken line in FIG. 4, and when the brush position is shifted in the counter-rotational direction of the a-element 123, the input to the ff1vJtffi 121 becomes higher and the suction force improves.

第７図〜第９図は第３の実施例を示す。第１の実施例で
は電動機の電流を検出装置３６で検出して電磁石３５へ
の通電を制御し、第２の実施例では電動機の回転数を回
転数センサ１３６で検出して電磁石１３５への通電を制
御したが、第３の実施例では風量センサ２３６を使用し
ている点が第１、第２の実施例とは異なる。２２１は電
動機本体で、その一端には吸込ファン（図示せず）を内
蔵した吸込用ファン部２２２が、他端には電機子２２３
を支持する軸受部２４がそれぞれ設けられている。２２
５は電機子２２３に設けられた整流子、２２６はこの整
流子２２５に給電するブラシで、ブラシホルダ２２７内
に保持されるとともに、バネ２２８によって整流子２２
５に押し付けられている。ブラシホルダ２２７は円環状
の絶縁材２２９に取り付けられ、電動機本体２２１のブ
ラケット２３０に設けた穴２３１をＩＩＮＬ、でいる。7 to 9 show a third embodiment. In the first embodiment, the current of the electric motor is detected by a detection device 36 to control the energization to the electromagnet 35, and in the second embodiment, the rotation speed of the electric motor is detected by a rotation speed sensor 136 to control the energization to the electromagnet 135. However, the third embodiment differs from the first and second embodiments in that an air volume sensor 236 is used. Reference numeral 221 denotes a motor body, at one end of which there is a suction fan section 222 with a built-in suction fan (not shown), and at the other end there is an armature 223.
Bearing portions 24 are provided for supporting the respective bearings. 22
5 is a commutator provided on the armature 223; 226 is a brush that supplies power to the commutator 225; it is held in a brush holder 227;
It is pushed to 5. The brush holder 227 is attached to an annular insulating material 229, and is inserted through a hole 231 provided in a bracket 230 of the motor body 221.

穴２３１はその縁部が絶縁材２３２によって覆われてい
る。円環状の絶縁材２２９はバネ２３３によって電ｖＪ
機本体２２１に弾性的に保持され、その一部に鉄片２３
４が設けである。またその鉄片２３４の近くに電磁石２
３５が設置されている。２３６はブラケット２３０にそ
の一端が回動自在に枢支され、他端をバネ２３７等で支
持された風受板２３８を持つ８Ｉｌｅセンサで、ｆｆ１
ｆｆｉが減少すると風受板２３８はバネ２３７によって
ブラケット２３０側へ回動するよう構成されている。こ
のＭｆｆｉｆｆ状２３６は風受板２３８の回動する変位
を抵抗器等（図示せず）で感知して、その検出された信
号を制御装置２３９へ出力するようにしである。電磁石
２３５には電動機本体２２１に流れる風量を感知する上
記ｆｉｆｆｉセンサ２３６と制御装置２３９によりｆｆ
ｉ吊が減少すると電力が供給されるようになっている。The edge of the hole 231 is covered with an insulating material 232. The annular insulating material 229 receives a voltage vJ by the spring 233.
It is elastically held by the machine body 221, and a part of it has an iron piece 23.
4 is a provision. Also, an electromagnet 2 is placed near the iron piece 234.
35 are installed. 236 is an 8Ile sensor having a wind receiving plate 238 whose one end is rotatably supported by a bracket 230 and whose other end is supported by a spring 237, etc.
The wind receiving plate 238 is configured to rotate toward the bracket 230 by a spring 237 when ffi decreases. This Mffiff shape 236 is configured to sense the rotational displacement of the wind receiving plate 238 using a resistor or the like (not shown) and output the detected signal to the control device 239. The electromagnet 235 is connected to the fiffi sensor 236 that detects the amount of air flowing into the motor body 221 and the control device 239.
When the i-hang decreases, power is supplied.

次に、この第３の実施例の整流予電ｖＪ機を電動送風機
に使用した電気掃除機の場合を例に挙げて動作を説明す
る。Next, the operation will be explained by taking as an example the case of a vacuum cleaner in which the rectifying pre-current VJ machine of the third embodiment is used as an electric blower.

電気掃除機を運転し、床ノズルを空中に浮かせると、吸
込Ｍｆｆｉが多いため、風量センサ２３６が開放状態（
第７図実線）となる。このため電磁石２３５には電力が
供給されず、磁力が働かず鉄片２３４は電磁石２３５へ
吸引されない。矢印六方向は電機子２２３の回転方向を
示し、整流子２２５へは第７図実線で示すブラシ位置よ
り電流が供給される。When the vacuum cleaner is operated and the floor nozzle is suspended in the air, the air volume sensor 236 is in the open state (
Figure 7 solid line). Therefore, no power is supplied to the electromagnet 235, no magnetic force is applied, and the iron piece 234 is not attracted to the electromagnet 235. The six directions of arrows indicate the rotation direction of the armature 223, and current is supplied to the commutator 225 from the brush position shown by the solid line in FIG.

次に床ノズルを被掃除面に付けて掃除を行うと、吸込ｆ
ｆ１ｆｆｉが減少するため１１１ｍセンサ２３Ｇが第７
図破線で示すようにバネ２３７でブラケット２３０へ付
勢され閉じた状態になる。このため、この８ａ吊センサ
２３６のこの回動によって検出した信号が制御装＠２３
９へ出力され、電磁石２３５へ電力が供給され、電磁石
２３５の磁力が強くなる。これにより鉄片２３４は電磁
石２３５へ吸引され、円環状の絶縁材２２９はバネ２３
３に抗して矢印Ｂ方向に回転し、整流子２２５へは第７
図破線で示すブラシ位置より電流が供給され、ブラシ位
置が電機子２２３の反回転方向へずれると、電動１１１
２２１の入力は高くなり、吸込力は向上する。Next, when cleaning by attaching the floor nozzle to the surface to be cleaned, the suction f
Since f1ffi decreases, 111m sensor 23G is the seventh
As shown by the broken line in the figure, the bracket 230 is biased by a spring 237 to be in a closed state. Therefore, the signal detected by this rotation of the 8a suspension sensor 236 is transmitted to the control device @23.
9, power is supplied to the electromagnet 235, and the magnetic force of the electromagnet 235 becomes stronger. As a result, the iron piece 234 is attracted to the electromagnet 235, and the annular insulating material 229 is attached to the spring 23.
3 in the direction of arrow B, and the seventh
When a current is supplied from the brush position indicated by the broken line in the diagram and the brush position shifts in the counter-rotation direction of the armature 223, the electric motor 111
The input of 221 becomes higher and the suction force improves.

第１０図は第４の実施例を示す。なお、機械的構成は第
１図と第２図と同一である。第１の実施例では電流を検
出して電磁石３５への通電を制御したが、第４の実施例
では電動機の等価インピーダンスを検出して電磁への通
電を制御している点が第１の実施例と異なる。FIG. 10 shows a fourth embodiment. Note that the mechanical configuration is the same as in FIGS. 1 and 2. In the first embodiment, the current was detected to control the energization to the electromagnet 35, but in the fourth embodiment, the equivalent impedance of the motor was detected to control the energization to the electromagnet 35. Different from the example.

この第１０図の場合、？１ｆｉｉ石３５には電動機本体
２１の等価インピーダンスを検出する検出装＠３３６と
制御装Ｗ１３３７により、等価インピーダンスが増加す
ると電力が供給されるように構成されている。In this case of Figure 10, ? The 1fii stone 35 is configured to be supplied with electric power by a detection device @336 that detects the equivalent impedance of the motor body 21 and a control device W1337 when the equivalent impedance increases.

次に第４の実施例の整流子電動機を電動送風機に使用し
た電気掃除機の場合を例に挙げて動作を説明する。Next, the operation will be explained by taking as an example a vacuum cleaner in which the commutator motor of the fourth embodiment is used as an electric blower.

電気掃除機を運転し、床ノズルを空中に浮かせると、吸
込ＦＩＡｆｆｉが多いため、Ｔｉ　ｖＪＩａの温度の上
昇は著しくなく等価インピーダンスはさほど増加しない
。このため電磁石３５には電力が供給されず、磁力が働
かず鉄片３４は電磁石３５へ吸引されない。When a vacuum cleaner is operated and the floor nozzle is suspended in the air, there is a large amount of suction FIAffi, so the temperature of TivJIa does not increase significantly and the equivalent impedance does not increase much. Therefore, no power is supplied to the electromagnet 35, no magnetic force is applied, and the iron piece 34 is not attracted to the electromagnet 35.

整流子２５へは第１図実線で示ずブラシ位置より電流が
供給される。A current is supplied to the commutator 25 from the brush position, which is not shown by the solid line in FIG.

次に床ノズルを被掃除面に付けて掃除を行うと、吸込風
量が低下するため電動機の温度の上昇が茗しくなり等価
インピーダンスも増加する。このため、電磁石３５へ電
力が供給され電磁石３５の磁力が強くなる。これにより
鉄片３４は電磁石３５へ吸引され、円環状の絶縁材２９
はバネ３３に抗して回転する。Next, when cleaning is performed by attaching the floor nozzle to the surface to be cleaned, the suction air volume decreases, so the temperature of the motor increases slowly and the equivalent impedance also increases. Therefore, electric power is supplied to the electromagnet 35, and the magnetic force of the electromagnet 35 becomes stronger. As a result, the iron piece 34 is attracted to the electromagnet 35, and the annular insulating material 29
rotates against the spring 33.

整流子２５へは第１図破線で示すブラシ位置より電流が
供給されるようになる。このようにブラシ位置が電機子
２３の反回転方向へずれると、電１７１１Ｆｌの入力は
高くなり、吸込力は向上する。Current is supplied to the commutator 25 from the brush position indicated by the broken line in FIG. When the brush position is shifted in the counter-rotation direction of the armature 23 in this way, the input to the electric current 1711Fl becomes higher and the suction force improves.

以上説明のように、第°１〜第４の実施例の整流子電動
機を使用した電気掃除機ではともに、床ノズルを被掃除
面に付けると、ブラシの位置かずれて電ｖＪ機の入力が
高くなり第１１図に示すように（実線）、従来の整流子
電動機（破線）よりも、実際に掃除に使用するＪｉｍ域
（８点）の入力を高くすることができる。このため第１
２〜１４図に示すように、真空度、吸込仕事率、回転数
とも従来よりも高めることができるものである。As explained above, in the vacuum cleaners using the commutator motors of the first to fourth embodiments, when the floor nozzle is attached to the surface to be cleaned, the position of the brush is shifted and the input to the electric VJ machine is affected. As shown in FIG. 11 (solid line), the input in the Jim range (8 points) actually used for cleaning can be made higher than in the conventional commutator motor (broken line). For this reason, the first
As shown in Figures 2 to 14, the degree of vacuum, suction power, and number of revolutions can all be increased compared to conventional systems.

また、第２の実施例では、回転数センサ１３６を電動機
１２１の吸込用ファン部１２２と反対位置に取り付けで
あるが、他の場所に取り付けて回転数を感知しても同様
の効果がある。Further, in the second embodiment, the rotation speed sensor 136 is attached to a position opposite to the suction fan section 122 of the electric motor 121, but the same effect can be obtained even if the rotation speed sensor 136 is attached to another location to sense the rotation speed.

さらに第１〜第４の実施例ではブラシホルダが円環状の
絶縁材と同様に回転可動するが、ブラシホルダの位置は
変らず、傾けることによって整流子へ当接する位置を変
えても同様の効果がある。Furthermore, in the first to fourth embodiments, the brush holder rotates and moves in the same way as the annular insulating material, but the position of the brush holder does not change, and the same effect can be obtained even if the position of contact with the commutator is changed by tilting the brush holder. There is.

発明の詳細 な説明のように本発明の整流予電ｖＪＲは、整流子の回
転方向に沿って回動可能に弾性支持されたブラシホルダ
と、このブラシホルダの一部に設けられた吸着片と、こ
の吸着片の近くに配設され吸着片を吸着して前記ブラシ
ホルダを電機子の回転方向とは逆方向に回動させる電磁
石を設けたため、電′＃Ｊ機の負荷が重くなった状態で
前記電磁石に通電することによって雷１１ＪＩＩへの入
力が高くなり、電気掃除機の電妨送層機に使用した場合
には、実使用時の入力が増加して、強い吸引力を得るこ
とが出来、床ノズルを空中に浮せた待機時には、入力が
低くなり、無駄な電力消費をなくすることが出来るもの
である。As described in the detailed description of the invention, the rectifying preload vJR of the present invention includes a brush holder that is elastically supported to be rotatable along the rotational direction of the commutator, and a suction piece provided on a part of the brush holder. Because an electromagnet was installed near the suction piece to attract the suction piece and rotate the brush holder in the opposite direction to the direction of rotation of the armature, the load on the electric machine became heavy. By energizing the electromagnet, the input to the lightning 11JII increases, and when used in a vacuum cleaner's electric jamming layer, the input increases during actual use, making it possible to obtain a strong suction force. When the nozzle is on standby with the floor nozzle floating in the air, the input power is lowered and unnecessary power consumption can be eliminated.

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

第１図は本発明の第１の実施例における整流子電動送風
機の部分正断面図、第２図は同部分側断面図、第３図は
第１の実施例の回路構成図、第４図は第２の実施例にお
ける整流子電動送風機の部分正断面図、第５図は同部分
側断面図、第６図は第２の実施例の回路構成図、第７図
は第３の実施例における整流子電動送風機の部分正断面
図、第８図は同部分側断面図、第９図は第３の実施例の
回路構成図、第１０図は第４の実施例における回路構成
図、第１１図は入力特性図、第１２図は真空度特性図、
第１３図は吸込仕事率特性図、第１４図は回転数特性図
、第１５図は従来の整流子電動送風機の要部断面図、第
１６図は同人力特性図である。 ２３、１２３，２２３・・・電機子、２５，１２５，２
２５・・・整流子、２６、１２６．２２６・・・ブラシ
、２７．１２７．２２７・・・ブラシホルダ、３４、１
３４，２３４・・・鉄片〔吸着片）　、３５，１３５，
２３５・・・電磁石、３６．３３６・・・検出装置、１
３６・・・回転数センサ、２３６・・・風量センサ、３
７．１３７．２３９，３３７・・・制御装置、Ａ・・・
電機子回転方向 代理人　　　森　　本　　義　　弘 第１図 ７１ラジオｊ鼾！” 第２図 第３図 第Ｓ図 第２図 を編 第７図 ２２７７°ラシネノシ！゛ 第２図 第２図 第１／図 第１ｆ図 人力 第１２図 第７３図 第７４図 ４　　　　　Ｓ 第１Δ図Fig. 1 is a partial front sectional view of a commutator electric blower according to the first embodiment of the present invention, Fig. 2 is a side sectional view of the same part, Fig. 3 is a circuit configuration diagram of the first embodiment, and Fig. 4 is a partial front sectional view of the commutator electric blower in the second embodiment, FIG. 5 is a side sectional view of the same portion, FIG. 6 is a circuit configuration diagram of the second embodiment, and FIG. 7 is a third embodiment. 8 is a partial side sectional view of the commutator electric blower, FIG. 9 is a circuit diagram of the third embodiment, FIG. 10 is a circuit diagram of the fourth embodiment, and FIG. Figure 11 is an input characteristic diagram, Figure 12 is a vacuum degree characteristic diagram,
FIG. 13 is a suction power characteristic diagram, FIG. 14 is a rotation speed characteristic diagram, FIG. 15 is a sectional view of a main part of a conventional commutator electric blower, and FIG. 16 is a human power characteristic diagram. 23, 123, 223...armature, 25, 125, 2
25... Commutator, 26, 126.226... Brush, 27.127.227... Brush holder, 34, 1
34,234... iron piece [adsorption piece], 35,135,
235... Electromagnet, 36.336... Detection device, 1
36... Rotation speed sensor, 236... Air volume sensor, 3
7.137.239,337...control device, A...
Armature rotation direction agent Yoshihiro Morimoto Figure 1 71 Radio j Snore! ” Fig. 2 Fig. 3 Fig. S Fig. 2 edited Fig. 7 2277° Racinenoshi! Fig. 2 Fig. 2 Fig. 1/Fig. 1f Human power Fig. 12 Fig. 73 Fig. 74 Fig. 4 S 1Δ figure

Claims (1)

【特許請求の範囲】 １、ファンと連結した電機子と、この電機子と一体に回
転する整流子と、この整流子に当接して給電するブラシ
と、このブラシを保持すると共に整流子の回転方向に沿
つて回動可能に弾性支持されたブラシホルダと、このブ
ラシホルダの一部に設けられた吸着片と、この吸着片の
近くに配設され吸着片を吸着して前記ブラシホルダを電
機子の回転方向とは逆方向に回動させる電磁石とを設け
た整流子電動機。 ２、電磁石への通電制御を、電動機に流れる電流量を検
出して、電動機に流れる電流が減少すると通電し、増加
すると通電しないように構成したことを特徴とする特許
請求の範囲第１項記載の整流子電動機。 ３、電磁石への通電制御を、電動機の回転数を検出して
、回転数が高い時に通電し、回転数が低い時に通電しな
いよう構成したことを特徴とする特許請求の範囲第１項
記載の整流子電動機。 ４、電磁石への通電制御を、電動機本体に流れる風量を
検出して、風量が少ない時に通電し、風量が多い時に通
電しないように構成したことを特徴とする特許請求の範
囲第１項記載の整流子電動機。 ５、電磁石への通電制御を、電動機の等価インピーダン
スを検出して、等価インピーダンスが増加すると通電し
、等価インピーダンスが減少すると通電しないよう構成
したことを特徴とする特許請求の範囲第１項記載の整流
子電動機。[Claims] 1. An armature connected to a fan, a commutator that rotates together with the armature, a brush that contacts this commutator to supply power, and a brush that holds this brush and rotates the commutator. A brush holder is elastically supported so as to be rotatable along a direction, a suction piece is provided on a part of this brush holder, and the suction piece is placed near the suction piece to attract the suction piece to move the brush holder to an electric motor. A commutator motor equipped with an electromagnet that rotates the child in the opposite direction. 2. The power supply to the electromagnet is controlled by detecting the amount of current flowing through the motor, and when the current flowing through the motor decreases, the current is applied, and when the current increases, the current is not applied. commutator motor. 3. The electromagnet is controlled to be energized by detecting the number of revolutions of the motor, and is configured to energize when the number of revolutions is high and not to energize when the number of revolutions is low. Commutator motor. 4. The electromagnet is controlled to be energized by detecting the amount of air flowing through the motor body so that it is energized when the amount of air is low and is not energized when the amount of air is large. Commutator motor. 5. The electromagnet is controlled to be energized by detecting the equivalent impedance of the motor, and when the equivalent impedance increases, the energization is performed, and when the equivalent impedance decreases, the energization is not performed. Commutator motor.