JPH08215120A - Control circuit for vacuum cleaner - Google Patents
Control circuit for vacuum cleanerInfo
- Publication number
- JPH08215120A JPH08215120A JP2531695A JP2531695A JPH08215120A JP H08215120 A JPH08215120 A JP H08215120A JP 2531695 A JP2531695 A JP 2531695A JP 2531695 A JP2531695 A JP 2531695A JP H08215120 A JPH08215120 A JP H08215120A
- Authority
- JP
- Japan
- Prior art keywords
- intake port
- circuit
- vacuum cleaner
- voltage
- hose
- 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
Landscapes
- Electric Vacuum Cleaner (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、モータの電力供給制御
を行う電気掃除機の制御回路に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control circuit of an electric vacuum cleaner for controlling electric power supply to a motor.
【０００２】[0002]
【従来の技術】従来の電気掃除機のモータ制御回路に
は、スイッチング半導体素子を用いた位相制御方式の回
路が多く用いられている。これは、ＩＣ回路や抵抗、コ
ンデンサ等からなる時定数回路により交流電源の零クロ
ス点より一定時間経過後にスイッチング素子を動作させ
ることにより、モータへの電力供給量を制御するもので
ある。さらに、位相制御回路を遠隔制御するため、ホー
ス手元部にスライドボリュームやスイッチ等を備え、使
用者の操作を容易にした電気掃除機がある。2. Description of the Related Art In a conventional motor control circuit of an electric vacuum cleaner, a phase control type circuit using a switching semiconductor element is often used. This is to control the amount of power supplied to a motor by operating a switching element after a lapse of a certain time from a zero cross point of an AC power supply by a time constant circuit including an IC circuit, a resistor, a capacitor and the like. Further, there is an electric vacuum cleaner that has a slide volume control, a switch, and the like at a hand portion of a hose for remotely controlling a phase control circuit, and facilitates a user's operation.
【０００３】図７は、従来の電気掃除機の制御回路構成
図である。交流電源１は、ファン内蔵のモータ２及び吸
気口端子１６とホース１０を介し、ホース接点１７を通
して手元部１１に供給される。手元部１１の電源回路８
により手元操作回路７や表示回路（図示せず）に電源が
供給される。FIG. 7 is a block diagram of a control circuit of a conventional vacuum cleaner. The AC power supply 1 is supplied to the hand portion 11 through the hose 10 and the motor 2 with a built-in fan, the intake port terminal 16 and the hose 10. Power supply circuit 8 at hand 11
By this, power is supplied to the hand operation circuit 7 and the display circuit (not shown).
【０００４】さらに手元操作回路７の信号は手元送信手
段６により電源供給線に重畳される。本体受信手段５で
は電源供給線に重畳された信号を分離し、モータ制御回
路３を制御する。一般的にモータ制御回路３は半導体ス
イッチング素子等で構成され、モータ２への電力供給量
を制御する。以上のように、従来の技術では掃除機本体
９から手元部１１に電力を直接供給する。従って、手元
部１１に供給する電源は商用電源のＡＣ１００Ｖが直接
印加される場合が多い。Further, the signal of the hand operation circuit 7 is superimposed on the power supply line by the hand transmitting means 6. The main body receiving means 5 separates the signal superimposed on the power supply line and controls the motor control circuit 3. Generally, the motor control circuit 3 is composed of a semiconductor switching element or the like, and controls the amount of electric power supplied to the motor 2. As described above, in the conventional technique, electric power is directly supplied from the cleaner body 9 to the hand portion 11. Therefore, in many cases, AC100V of commercial power is directly applied to the power supply to the hand section 11.
【０００５】[0005]
【発明が解決しようとする課題】この様に従来の掃除機
の構成では、ホースが掃除機本体の吸気口に接続されて
いない場合にも掃除機本体内蔵の回路に通電されている
ため、無駄な電力が消費される。As described above, in the structure of the conventional vacuum cleaner, even if the hose is not connected to the intake port of the vacuum cleaner main body, the circuit built in the vacuum cleaner main body is energized. Power is consumed.
【０００６】また、吸気口端子１６を短絡すると本体内
蔵の回路素子の破壊、ヒューズ等の安全装置の動作や溶
断等が発生する。最悪の場合には、回路素子が発熱して
火災等の危険な状態に陥る場合がある。Further, when the intake port terminal 16 is short-circuited, the circuit element built in the main body is broken, and the safety device such as a fuse operates or is blown. In the worst case, the circuit element may generate heat and fall into a dangerous state such as a fire.
【０００７】さらに、商用電源を手元部に直接供給して
いるため、電気用品取締法に規定された充電金属部の絶
縁距離が必要となり、回路構成の縮小化が困難となる。Further, since the commercial power source is directly supplied to the hand portion, the insulation distance of the charged metal portion stipulated in the Electrical Appliance and Material Control Law is required, which makes it difficult to reduce the circuit configuration.
【０００８】本発明は、上記課題を解決するもので、電
気掃除機の制御回路を提供することを目的としている。The present invention has been made to solve the above-mentioned problems, and an object thereof is to provide a control circuit for a vacuum cleaner.
【０００９】[0009]
【課題を解決するための手段】本発明は上記目的を達成
するために、第１の手段として、ファンを内蔵したモー
タと、モータ制御回路と、掃除機本体の吸気口に接続さ
れるホースへ電源を供給しさらにホースからの操作信号
を受け取るための吸気口端子と、吸気口端子に流れる電
流を検知する電流検知回路と、吸気口端子に印加される
電圧を検知する電圧検知回路と、ホースからの操作信号
を受信しモータ制御回路を動作させる本体受信手段とで
構成されている。In order to achieve the above object, the present invention provides, as a first means, a motor having a built-in fan, a motor control circuit, and a hose connected to an intake port of a cleaner body. An inlet port for supplying power and receiving an operation signal from the hose, a current detection circuit for detecting the current flowing through the inlet port, a voltage detection circuit for detecting the voltage applied to the intake port, and a hose And a main body receiving means for operating the motor control circuit by receiving an operation signal from.
【００１０】また第２の手段として、上記第１の手段に
加え、掃除機本体に内蔵され、かつ吸気口端子へ流れる
電流を制限する吸気口電流制限手段を備える。As a second means, in addition to the above-mentioned first means, there is provided an intake port current limiting means which is built in the cleaner body and which limits the current flowing to the intake port terminal.
【００１１】次に第３の手段として、上記第１の手段ま
たは第２の手段に加え、吸気口端子に印加する電圧を降
圧回路を用いて降圧する。Next, as a third means, in addition to the first means or the second means, the voltage applied to the intake port terminal is stepped down using a step-down circuit.
【００１２】さらに第４の手段として、上記第３の手段
を用い、吸気口にホースが接続された時、通常の印加電
圧よりも高い電圧を一定時間吸気口端子に印加する。As the fourth means, the third means is used to apply a voltage higher than the normal applied voltage to the intake port terminal for a certain period of time when the hose is connected to the intake port.
【００１３】[0013]
【作用】本発明の第１の手段によれば、掃除機の吸い込
み力等を遠隔操作するスイッチ等を備えたホースを接続
するための吸気口端子において、この吸気口端子に流れ
る電流を検知する電流検知回路と、吸気口端子間の電圧
を検知する電圧検知回路とを用いる。ここで、吸気口端
子、電流検知回路及び電圧検知回路は掃除機本体に内蔵
されている。According to the first means of the present invention, in the intake port terminal for connecting the hose provided with the switch for remotely controlling the suction force of the cleaner, the current flowing through the intake port terminal is detected. A current detection circuit and a voltage detection circuit that detects the voltage between the intake port terminals are used. Here, the intake port terminal, the current detection circuit, and the voltage detection circuit are built in the cleaner body.
【００１４】例えば、前述のホースが吸気口に接続され
ていない場合は、使用者が掃除機を使用していない場合
で、吸気口端子は開放状態となる。そのため、電流は流
れず、電圧のみが吸気口端子間に印加される。従って、
電流波形は発生しないため電流検知回路は波形無しの信
号を出力する。また、電圧波形の発生により電圧検知回
路は波形有りの信号を出力する。この２つの信号を本体
受信手段が受け取った場合、本体受信手段にホースが掃
除機本体に接続されていないと判断させ、自己の消費電
力を低減させる動作を行わせる。つまり、ホースが接続
されていない場合に、掃除機本体の回路の消費電力を低
減させることができる。For example, when the above-mentioned hose is not connected to the intake port, the intake port terminal is open when the user is not using the vacuum cleaner. Therefore, no current flows and only the voltage is applied between the intake port terminals. Therefore,
Since no current waveform is generated, the current detection circuit outputs a signal with no waveform. Further, when the voltage waveform is generated, the voltage detection circuit outputs a signal having a waveform. When the main body receiving means receives these two signals, it causes the main body receiving means to judge that the hose is not connected to the main body of the cleaner, and causes the main body receiving means to perform an operation of reducing its own power consumption. That is, it is possible to reduce the power consumption of the circuit of the cleaner body when the hose is not connected.
【００１５】またこれとは逆に、ホースが吸気口に接続
された場合、ホースの回路に通電を行うため、吸気口端
子に電流が流れる。これにより、電流検知回路及び電圧
検知回路とも波形有りの信号を出力する。従って、ホー
スからの操作信号を受け取ることができるように掃除機
本体の回路を動作させ、動作準備状態となる。On the contrary, when the hose is connected to the intake port, the circuit of the hose is energized, so that a current flows through the intake port terminal. As a result, both the current detection circuit and the voltage detection circuit output signals with waveforms. Therefore, the circuit of the cleaner main body is operated so as to be able to receive the operation signal from the hose, and the operation is ready.
【００１６】よって、ホースが吸気口に接続されていな
い際に掃除機本体の回路を休止させることにより、無駄
な電力の消費が抑えられる。Therefore, by suspending the circuit of the cleaner body when the hose is not connected to the intake port, wasteful power consumption can be suppressed.
【００１７】また第２の手段によれば、吸気口端子がな
んらかの原因で誤って短絡された場合、吸気口端子に異
常な電流が流れ、吸気口端子間の電圧は零となる。つま
り、電流検知回路は波形有りの信号を出力するが、電圧
検知回路は信号無しの信号を出力する。この様な出力状
態となった場合に、本体受信手段に吸気口端子が短絡さ
れていると判断させ、商用電源と吸気口端子の中間に設
けられた吸気口電流制限手段を用い吸気口端子への電流
供給を制限させる。これらの作用により、異常な電流が
吸気口に流れることを防止することができる。According to the second means, when the intake port terminal is erroneously short-circuited for some reason, an abnormal current flows through the intake port terminal and the voltage between the intake port terminals becomes zero. That is, the current detection circuit outputs a signal with a waveform, but the voltage detection circuit outputs a signal without a signal. When such an output state occurs, the main body receiving means determines that the intake port terminal is short-circuited, and the intake port current limiting device provided between the commercial power supply and the intake port terminal is used to reach the intake port terminal. To limit the current supply of. By these actions, it is possible to prevent an abnormal current from flowing to the intake port.
【００１８】次に第３の手段によれば、商用電源と吸気
口端子との間に設けられた降圧回路により、ホースに内
蔵された回路へ降圧された電源電圧が供給され、その電
圧が電気用品取締法の規定以下の電圧に降圧されれば、
充電金属部の絶縁距離が短くなり、従来の電子回路の規
模を縮小化できる。According to the third means, the step-down circuit provided between the commercial power source and the intake port terminal supplies the stepped-down power supply voltage to the circuit built in the hose, and the voltage is supplied to the electricity. If you step down to a voltage below the regulation of the Articles Control Law,
The insulation distance of the charging metal portion is shortened, and the scale of the conventional electronic circuit can be reduced.
【００１９】さらに第４の手段によれば、吸気口にホー
スが接続が接続された時、一定時間に限り、通常吸気口
端子に印加されている電圧よりも高い電圧を印加するこ
とにより、吸気口端子やホース接点等に形成された絶縁
皮膜等が破壊される。従って、接点の接触不良が減少
し、信頼性の高い制御を行うことができる。Further, according to the fourth means, when the hose is connected to the intake port, by applying a voltage higher than the voltage normally applied to the intake port terminal for a fixed time, the intake The insulation film, etc. formed on the mouth terminals and hose contacts is destroyed. Therefore, the contact failure of the contacts is reduced, and highly reliable control can be performed.
【００２０】[0020]
【実施例】本発明を第１の実施例を図１により説明す
る。図１において、従来例と同一部品には同一符号を付
しその説明を省略するが、本実施例では吸気口端子に流
れる電流を検知する電流検知回路１２およびその端子に
印加される電圧を検知する電圧検知回路１３を設けてい
る点が特徴である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIG. In FIG. 1, the same parts as those of the conventional example are designated by the same reference numerals and the description thereof will be omitted. It is characterized in that a voltage detection circuit 13 that operates is provided.
【００２１】図５は、図１、図２、図３を詳細に説明す
るため、掃除機本体９に内蔵された本体受信手段５をＣ
ＰＵ５−１に、電流検知回路１２をフォトトランジスタ
１２−１に、電圧検知回路１３をフォトトランジスタ１
３−１に、吸気口電流制限手段１４をフォトカプラ１４
−１に、降圧回路１５をトランス１５−１にそれぞれ対
応し、一実施例を具体的な回路図とした。FIG. 5 illustrates the main body receiving means 5 built in the cleaner main body 9 as C for the purpose of explaining FIGS. 1, 2 and 3 in detail.
In PU5-1, the current detection circuit 12 is the phototransistor 12-1, and the voltage detection circuit 13 is the phototransistor 1.
3-1, the intake port current limiting means 14 is connected to the photocoupler 14
-1 corresponds to the step-down circuit 15 to the transformer 15-1, respectively, and one embodiment is shown as a concrete circuit diagram.
【００２２】図４は、吸気口の使用状態による吸気口端
子に流れる電流と、印加される電圧の波形を表している
が、商用電源からの正の半波が手元部への電力供給成分
を表し、商用電源からの負の半波が手元部からの操作信
号成分を含んでいるとする（操作信号の伝送方法につい
てはここでは述べない）。FIG. 4 shows the waveforms of the current flowing through the intake port terminal and the applied voltage depending on the usage state of the intake port. The positive half-wave from the commercial power supply determines the power supply component to the hand part. It is assumed that the negative half-wave from the commercial power supply includes the operation signal component from the hand (the transmission method of the operation signal is not described here).
【００２３】上記構成により、吸気口端子１６が開放さ
れた（ホース１０が接続されていない）場合、電流は図
４の（ア）の波形、電圧は（イ）の波形となる。つま
り、商用電源の正の半波に対応するフォトトランジスタ
１２−１、１３−１の出力はそれぞれ、電流波形はＨ電
位、電圧波形は電位Ｌとなる（表１）。With the above structure, when the intake port terminal 16 is opened (the hose 10 is not connected), the current has the waveform shown in FIG. 4A and the voltage has the waveform shown in FIG. That is, the outputs of the phototransistors 12-1 and 13-1 corresponding to the positive half-wave of the commercial power supply have the current waveform of the H potential and the voltage waveform of the potential L (Table 1).
【００２４】[0024]
【表１】 [Table 1]
【００２５】また、ここでは図示しないが、ホース１０
が接続された場合にはホース１０の回路に通電されるこ
とにより電流・電圧ともに発生し、フォトトランジスタ
１２−１、１３−１の出力は電流・電圧ともＬ電位とな
る。従って、吸気口端子１６の電流・電圧波形をそれぞ
れのフォトトランジスタ１２−１、１３−１の回路で検
知することにより、ホース１０が掃除機本体９の吸気口
端子１６に接続されているか否かを判断することができ
る（表１）。Although not shown here, the hose 10
When is connected, current and voltage are generated by energizing the circuit of the hose 10, and the outputs of the phototransistors 12-1 and 13-1 both become L potential in current and voltage. Therefore, whether the hose 10 is connected to the intake port terminal 16 of the cleaner body 9 is detected by detecting the current / voltage waveform of the intake port terminal 16 by the circuits of the phototransistors 12-1 and 13-1. Can be judged (Table 1).
【００２６】この判断を基に、ホース１０が接続されて
いない場合のみに、本体９内蔵の電子回路の消費電力を
減少させるように制御を行う。例えばＣＰＵ５−１によ
って様々な信号の入出力を行い掃除機を制御している場
合、ホース１０が掃除機本体９に接続されていない時
は、一般的に掃除機を使用しない状態であるため、ＣＰ
Ｕ５−１の消費電力を低減させるスタンバイモードに切
り換え、さらにＣＰＵ５−１の周辺回路の電源をＣＰＵ
５−１を用いて遮断することにより、回路の消費電力を
減少することができる。Based on this judgment, control is performed so as to reduce the power consumption of the electronic circuit built in the main body 9 only when the hose 10 is not connected. For example, when the CPU 5-1 inputs and outputs various signals to control the cleaner, when the hose 10 is not connected to the cleaner body 9, the cleaner is generally not used. CP
Switch to the standby mode to reduce the power consumption of U5-1, and power the peripheral circuits of CPU5-1 to the CPU.
By using 5-1 to cut off, the power consumption of the circuit can be reduced.
【００２７】また、第２の実施例は図２に示すように、
上述した第１の実施例の構成に加えて、商用電源１と吸
気口端子１６の中間に吸気口電流制限手段１４を備え、
リレーやスイッチング素子等で構成される。例えば、使
用者が誤って吸気口端子１６を短絡する、またはホース
１０内の配線が短絡する場合がある。この場合、吸気口
端子１６に流れる電流は図４の（ウ）の波形、印加され
る電圧は（エ）の波形となる。つまり、正の半波に対す
るフォトトランジスタの出力はそれぞれ、電流波形はＬ
電位、電圧波形はＨ電位となる。また、吸気口端子１６
が開放された（ホース１０が接続されていない）場合、
電流は図４の（ア）の波形、電圧は（イ）の波形とな
る。つまり、正の半波に対するフォトトランジスタの出
力はそれぞれ、電流波形はＨ電位、電圧波形はＬ電位と
なる。The second embodiment, as shown in FIG.
In addition to the configuration of the first embodiment described above, the inlet current limiting means 14 is provided between the commercial power source 1 and the inlet terminal 16.
It consists of relays and switching elements. For example, the user may mistakenly short the intake port terminal 16 or short the wiring in the hose 10. In this case, the current flowing through the intake port terminal 16 has the waveform shown in FIG. 4C and the applied voltage has the waveform shown in FIG. That is, the output of the phototransistor for the positive half-wave has a current waveform of L
The potential and voltage waveform are H potential. In addition, the intake port terminal 16
Is opened (hose 10 is not connected),
The current has the waveform shown in FIG. 4A and the voltage has the waveform shown in FIG. That is, the output of the phototransistor with respect to the positive half wave has the H potential as the current waveform and the L potential as the voltage waveform.
【００２８】以上をまとめると（表１）になる。この
（表１）の状態をＣＰＵ５−１に記憶させておき、吸気
口端子１６を短絡した場合には、吸気口端子１６への電
流を制限するように、ＣＰＵ５−１から信号を出力し吸
気口電流制限手段１４を動作させ、吸気口端子１６への
電流を制限することができる。例えば、図５のＣＰＵ５
−１の出力信号でフォトカプラ１４−１をＯＮ／ＯＦＦ
させる。ＯＮ状態では電流が流れ、ＯＦＦ状態ではフォ
トカプラ１４−１と並列に接続されている抵抗１８の抵
抗値による電流が流れる。従って、吸気口端子１６の短
絡時に、吸気口端子１６に異常な電流が流れず、本体回
路素子を保護することができる。The above is summarized (Table 1). The state of this (Table 1) is stored in the CPU 5-1. When the intake port terminal 16 is short-circuited, a signal is output from the CPU 5-1 so that the current to the intake port terminal 16 is limited. The mouth current limiting means 14 can be operated to limit the current to the intake port terminal 16. For example, CPU5 in FIG.
ON / OFF of photo coupler 14-1 with -1 output signal
Let it. A current flows in the ON state, and a current due to the resistance value of the resistor 18 connected in parallel with the photocoupler 14-1 flows in the OFF state. Therefore, when the intake port terminal 16 is short-circuited, an abnormal current does not flow through the intake port terminal 16 and the main body circuit element can be protected.
【００２９】さらに、第３の実施例は図３に示すよう
に、上述した第１の実施例の構成に加えて、商用電源１
と吸気口端子１６の中間に降圧回路１５を備え、吸気口
端子１６には降圧回路１５によって降圧された電圧が印
加される。例えば、商用電源ＡＣ１００Ｖを降圧回路１
５によりＡＣ３０Ｖに降圧した場合について説明する。
ＡＣ１００Ｖ時には電気用品取締法の規定により、極性
が異なる充電金属部間の絶縁距離は２ｍｍ以上と定めら
れているが、ＡＣ３０Ｖに降圧された２次側回路での絶
縁距離は必要ないとなっている。従って、降圧回路１５
の２次側以降の電子回路等の絶縁距離は絶縁を保てる必
要最小限度でよく、回路の構成を小さくすることができ
る。つまり、電流検知回路１２、電圧検知回路１３、吸
気口電流制限手段１４、吸気口端子１６の占有面積を縮
小化することができる。Further, in the third embodiment, as shown in FIG. 3, in addition to the structure of the first embodiment described above, a commercial power source 1
A step-down circuit 15 is provided between the intake port terminal 16 and the intake port terminal 16, and the voltage stepped down by the step-down circuit 15 is applied to the intake port terminal 16. For example, the commercial power supply AC100V, the step-down circuit 1
A case where the voltage is reduced to 30V AC by 5 will be described.
At 100 VAC, the insulation distance between charged metal parts having different polarities is set to 2 mm or more according to the regulations of the Electrical Appliance and Material Control Law, but the insulation distance in the secondary circuit stepped down to 30 VAC is not required. . Therefore, the step-down circuit 15
The insulation distance of the electronic circuit and the like on the secondary side and after is the minimum necessary to maintain insulation, and the circuit configuration can be reduced. That is, the area occupied by the current detection circuit 12, the voltage detection circuit 13, the intake port current limiting means 14, and the intake port terminal 16 can be reduced.
【００３０】次に第４の実施例は、図６に示す構成を用
いる。ホース１０が掃除機本体９に接続された場合、一
定時間に限って通常の電圧よりも高い電圧を吸気口端子
１６に印加する。ホース１０が掃除機本体９に接続され
たか否かは（表１）を基に判断することができる。従っ
て、掃除機本体９にホース１０が接続された瞬間から一
定時間に限り通常の電圧よりも高い電圧を吸気口端子１
６に印加することができる。Next, the fourth embodiment uses the configuration shown in FIG. When the hose 10 is connected to the cleaner body 9, a voltage higher than the normal voltage is applied to the intake port terminal 16 only for a fixed time. Whether the hose 10 is connected to the cleaner body 9 can be determined based on (Table 1). Therefore, a voltage higher than the normal voltage is applied to the intake port terminal 1 only for a certain time from the moment the hose 10 is connected to the cleaner body 9.
6 can be applied.
【００３１】例えば、図６に示すように、降圧回路１５
をタップ切り替え式のトランス１５−２とした場合、本
体受信手段５からのタップ切り替え信号により切り替え
スイッチ１９が切り替わり、通常の電圧よりも高い電圧
が一定時間に限り吸気口端子１６に印加される。この際
の電圧は、ＡＣ５０Ｖ以上かつ１秒程度の時間であれ
ば、吸気口端子１６やホース接点１７に付着した絶縁皮
膜を破壊することができることは既に公知である。For example, as shown in FIG. 6, the step-down circuit 15
In the case of the tap switching type transformer 15-2, the switching switch 19 is switched by the tap switching signal from the main body receiving means 5, and a voltage higher than the normal voltage is applied to the intake port terminal 16 only for a fixed time. It is already known that the voltage at this time can destroy the insulating film adhered to the intake port terminal 16 and the hose contact 17 as long as the voltage is 50 V AC or more and about 1 second.
【００３２】[0032]
【発明の効果】以上の実施例からも明らかなように、本
発明は以下のような効果がある。 （１）ホースが吸気口に接続されていない場合、回路の
消費電力を低減させるため、掃除機の回路消費電力の低
減が図れる。 （２）本体回路の破壊や溶断がなく、回路の保護が図
れ、さらに回路素子等の発熱による火災発生等の危険を
防止できる。 （３）降圧回路の２次側から３０Ｖ以下の電圧を用いる
構成としたため、極性が異なる充電金属部の絶縁距離が
２ｍｍから必要最小限度の距離になり、回路占有面積を
小さくできる。 （４）吸気口端子やホース接点等に付着した絶縁皮膜等
が破壊されるため、接点の接触不良等の不具合の発生を
低減でき、信頼性の高い制御を行うことができる。As is apparent from the above embodiments, the present invention has the following effects. (1) When the hose is not connected to the intake port, the circuit power consumption is reduced, so that the circuit power consumption of the vacuum cleaner can be reduced. (2) The circuit of the main body is not broken or melted, the circuit can be protected, and the risk of a fire due to heat generation of the circuit element or the like can be prevented. (3) Since the voltage of 30 V or less is used from the secondary side of the step-down circuit, the insulation distance of the charged metal parts having different polarities is reduced from 2 mm to the required minimum distance, and the circuit occupied area can be reduced. (4) Since the insulating film or the like attached to the intake port terminal or the hose contact is destroyed, the occurrence of problems such as contact failure of the contact can be reduced, and highly reliable control can be performed.
【図１】本発明の第１の実施例を示す電気掃除機の制御
回路のブロック図FIG. 1 is a block diagram of a control circuit of an electric vacuum cleaner showing a first embodiment of the present invention.
【図２】本発明の第２の実施例を示す電気掃除機の制御
回路のブロック図FIG. 2 is a block diagram of a control circuit of an electric vacuum cleaner showing a second embodiment of the present invention.
【図３】本発明の第３の実施例を示す電気掃除機の制御
回路のブロック図FIG. 3 is a block diagram of a control circuit of an electric vacuum cleaner showing a third embodiment of the present invention.
【図４】吸気口の使用状態による吸気口端子の電流・電
圧波形図[Figure 4] Current / voltage waveform diagram of the intake port terminal depending on the usage state of the intake port
【図５】本発明の第２および第３の実施例を示す具体的
な回路図FIG. 5 is a specific circuit diagram showing second and third embodiments of the present invention.
【図６】本発明の第４の実施例を示す電気掃除機の制御
回路のブロック図FIG. 6 is a block diagram of a control circuit of an electric vacuum cleaner showing a fourth embodiment of the present invention.
【図７】従来の電気掃除機の制御回路のブロック図FIG. 7 is a block diagram of a control circuit of a conventional electric vacuum cleaner.
２ モータ ３ モータ制御回路 ４ 本体の電源回路 ５ 本体受信手段 ９ 掃除機の本体 １０ ホース １２ 電流検知回路 １３ 電圧検知回路 １４ 吸気口電流制限手段 １６ 吸気口端子 2 motor 3 motor control circuit 4 main body power supply circuit 5 main body receiving means 9 main body of vacuum cleaner 10 hose 12 current detection circuit 13 voltage detection circuit 14 intake port current limiting device 16 intake port terminal
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山口 誠二 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Seiji Yamaguchi 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.
Claims (4)
回路と、掃除機本体の吸気口に接続されるホースへ電源
を供給しさらにホースからの操作信号を受け取るための
吸気口端子と、吸気口端子に流れる電流を検知する電流
検知回路と、吸気口端子に印加される電圧を検知する電
圧検知回路と、ホースからの操作信号を受信しモータ制
御回路を動作させる本体受信手段とで構成したことを特
徴とする電気掃除機の制御回路。1. A motor with a built-in fan, a motor control circuit, an intake port for supplying power to a hose connected to the intake port of the cleaner body, and an intake port terminal for receiving an operation signal from the hose, and an intake port. It consists of a current detection circuit that detects the current flowing through the terminal, a voltage detection circuit that detects the voltage applied to the intake port terminal, and a main body reception unit that receives an operation signal from the hose and operates the motor control circuit. A control circuit for an electric vacuum cleaner.
へ流れる電流を制限する吸気口電流制限手段を備えたこ
とを特徴とする請求項１に記載の電気掃除機の制御回
路。2. The control circuit for an electric vacuum cleaner according to claim 1, further comprising an intake port current limiting means incorporated in the main body of the vacuum cleaner and configured to limit a current flowing to the intake port terminal.
用いて降圧したことを特徴とする請求項１または２記載
の電気掃除機の制御回路。3. The control circuit for the electric vacuum cleaner according to claim 1, wherein the voltage applied to the intake port terminal is stepped down using a step-down circuit.
印加電圧よりも高い電圧を一定時間吸気口端子に印加す
ることを特徴とする請求項３記載の電気掃除機の制御回
路。4. The control circuit of the vacuum cleaner according to claim 3, wherein when the hose is connected to the intake port, a voltage higher than a normal applied voltage is applied to the intake port terminal for a certain period of time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02531695A JP3777624B2 (en) | 1995-02-14 | 1995-02-14 | Vacuum cleaner control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02531695A JP3777624B2 (en) | 1995-02-14 | 1995-02-14 | Vacuum cleaner control circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08215120A true JPH08215120A (en) | 1996-08-27 |
| JP3777624B2 JP3777624B2 (en) | 2006-05-24 |
Family
ID=12162597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP02531695A Expired - Fee Related JP3777624B2 (en) | 1995-02-14 | 1995-02-14 | Vacuum cleaner control circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3777624B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016112283A (en) * | 2014-12-17 | 2016-06-23 | 株式会社マキタ | Vacuum cleaner |
-
1995
- 1995-02-14 JP JP02531695A patent/JP3777624B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016112283A (en) * | 2014-12-17 | 2016-06-23 | 株式会社マキタ | Vacuum cleaner |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3777624B2 (en) | 2006-05-24 |
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