JPS6332756Y2 - - Google Patents
Info
- Publication number
- JPS6332756Y2 JPS6332756Y2 JP467181U JP467181U JPS6332756Y2 JP S6332756 Y2 JPS6332756 Y2 JP S6332756Y2 JP 467181 U JP467181 U JP 467181U JP 467181 U JP467181 U JP 467181U JP S6332756 Y2 JPS6332756 Y2 JP S6332756Y2
- Authority
- JP
- Japan
- Prior art keywords
- motor
- resistor
- circuit
- voltage divider
- current
- 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.)
- Expired
Links
- 238000001514 detection method Methods 0.000 claims description 11
- 239000003990 capacitor Substances 0.000 claims description 5
- 230000004044 response Effects 0.000 claims description 2
- 230000003111 delayed effect Effects 0.000 claims 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009429 electrical wiring Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
Landscapes
- Power-Operated Mechanisms For Wings (AREA)
- Window Of Vehicle (AREA)
- Protection Of Generators And Motors (AREA)
Description
【考案の詳細な説明】
本考案は車載用として用いられる補機、例えば
いわゆるパワウインドまたはサンルーフ等の駆動
モータへの通電を適切に制御するようにした自動
車用補機駆動回路に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an auxiliary equipment drive circuit for an automobile that appropriately controls energization of an auxiliary equipment used in a vehicle, such as a drive motor for a so-called power window or a sunroof.
この種駆動回路における一般的課題の１つは、
駆動モータに大きな負荷がかかつた際に駆動モー
タに過電流が流れるのを未然に防止して装置の保
全を図ることである。またこのことは、体格の小
さいモータを使用して補機自体の小型化とコスト
ダウンを図るのにも役立つ。さらに、サンルーフ
等に関しては閉じかけのとき人体が挾み込まれる
のを防止するのにも役立つ。 One of the common challenges in this type of drive circuit is:
The purpose is to prevent excessive current from flowing into the drive motor when a large load is applied to the drive motor, thereby preserving the device. This also helps in reducing the size and cost of the auxiliary equipment itself by using a smaller motor. Furthermore, it also helps prevent the human body from getting caught in sunroofs and the like when they are about to close.
しかして、従来知られている補機駆動回路によ
れば、駆動モータに流れる負荷電流の大きさを決
められた基準値と比較して基準値を上回つたとき
駆動モータへの通電を断つやり方が一般的であつ
た。 According to conventionally known auxiliary drive circuits, the magnitude of the load current flowing through the drive motor is compared with a predetermined reference value, and when the magnitude of the load current exceeds the reference value, the power to the drive motor is cut off. was common.
このため、従来回路では通電を断つまでの応答
時間が長く、負荷電流が予定の基準値に到達する
までの間、余分な負荷電流が流れ続ける欠点があ
つた。 For this reason, the conventional circuit has the drawback that the response time until the current is cut off is long, and an excess load current continues to flow until the load current reaches a predetermined reference value.
本考案は上記に鑑みて従来回路より応答性を向
上させた自動車用補機駆動回路を提供することを
目的とするものである。 In view of the above, an object of the present invention is to provide an auxiliary drive circuit for an automobile that has improved responsiveness compared to conventional circuits.
本考案の主な特徴は、負荷電流を比較する基準
値を一定の値とせず、現実の負荷電流値に対して
所定の時間遅れをもつた値とすることにより、負
荷電流増加の立ち上がりに応答し得る検出回路を
含み、さらにこの検出回路の正確な動作を期すた
めの周辺回路との結合を提供することである。 The main feature of this invention is that the reference value for comparing load currents is not a constant value, but is a value with a predetermined time delay relative to the actual load current value, so it responds to the rise of load current increase. The object of the present invention is to include a detection circuit capable of detecting the detection circuit, and to provide coupling with peripheral circuits to ensure accurate operation of the detection circuit.
以下本考案の一実施例について説明すると、第
１図において、２は自動車補機を作動させるため
の主スイツチで直流モータ３への通電を行うスイ
ツチである。１は車載直流電源、３は補機駆動用
の直流モータ、４は常開リレー、５はリレーコイ
ル、６は電流検出抵抗、７はリレーコイル５を駆
動するためのトランジスタ、１１，１２は電流検
出抵抗６の両端を分圧する抵抗、１３は充電抵
抗、１４は抵抗１３とで数百msの時定数をもつ
遅れコンデンサ、１６は比較器、１７はトランジ
スタ７のベース抵抗、９，１０は比較器動作にヒ
ステリシスを与えるためのフイードバツク用ダイ
オードと抵抗、２１は初期電流検出禁止用タイマ
回路で図示のごとく接続されている。 An embodiment of the present invention will be described below. In FIG. 1, reference numeral 2 is a main switch for operating an automobile auxiliary machine, and is a switch for energizing a DC motor 3. 1 is an on-vehicle DC power supply, 3 is a DC motor for driving auxiliary equipment, 4 is a normally open relay, 5 is a relay coil, 6 is a current detection resistor, 7 is a transistor for driving the relay coil 5, 11 and 12 are currents 13 is a charging resistor, 14 is a delay capacitor with a time constant of several hundred ms, 16 is a comparator, 17 is a base resistor of transistor 7, 9 and 10 are comparators. A feedback diode and a resistor 21 for providing hysteresis to the device operation are connected as shown in the figure in a timer circuit for inhibiting initial current detection.
上記構成において、第２図に示すようにt2時点
でモータ３に通電される電流値の急激な変化が生
じると、電流検出抵抗６とその両端に発生する電
圧より、抵抗１１，１２の分圧電圧と、抵抗１３
とコンデンサ１４で電圧レベルの比較を比較器１
６で行い、反転入力電圧（−）が非反転入力電圧
（＋）を上回るとその出力でトランジスタ７およ
びリレーコイル５を消勢させることにより、リレ
ー接点４を開放し、モータ３への通電を遮断す
る。このときダイオード９と抵抗１０を介してフ
イードバツクし比較器１６の一入力を持ち上げる
ため、主スイツチ２が投入され放しでも、モータ
３への通電は遮断された状態を保持する。 In the above configuration, as shown in FIG. 2, if there is a sudden change in the value of the current supplied to the motor 3 at time t 2 , the voltage generated across the current detection resistor 6 and its ends will be greater than the voltage generated by the resistors 11 and 12. Piezo voltage and resistance 13
Comparator 1 compares the voltage level with capacitor 14.
6, and when the inverted input voltage (-) exceeds the non-inverted input voltage (+), the output deenergizes the transistor 7 and the relay coil 5, thereby opening the relay contact 4 and turning the motor 3 off. Cut off. At this time, feedback occurs through the diode 9 and the resistor 10 to raise one input of the comparator 16, so that even if the main switch 2 is turned on or released, the current to the motor 3 remains cut off.
なお、主スイツチ２の投入初期には、モータへ
の起動電流の立ち上がりにより比較器１６の出力
が低レベルになるが、初期電流検出禁止タイマ回
路２１により、一定時間ｏ〜t1（数百msないしls）
のハイレベル信号を生じてトランジスタ７を強制
的に導通せしめる。 In addition, at the beginning of turning on the main switch 2, the output of the comparator 16 becomes low level due to the rise of the starting current to the motor, but the initial current detection prohibition timer circuit 21 keeps the output low for a certain period of time o~ t1 (several hundreds of milliseconds). or ls)
A high level signal is generated to force transistor 7 to conduct.
ここで、抵抗１１，１２，１３の抵抗値を
R11，R12，R13とし、コンデンサ１４の容量をC14
とし、また電流検出抵抗６の両端に発生する電圧
をＶ、比較器１６の反転入力端子（−）電圧をＥ
とすると、第２図においてt2時点における反転入
力端子電圧Ｅと検出電圧Ｖとの関係は、
E1＝R12／R11＋R12×V1→E2＝R12／R11＋R12×V2
また比較器１６の非反転入力端子電圧は、
V1→V1＋（V2−V1）（１−e-t/(C 14 +R 13 )）と変化
する。 Here, the resistance values of resistors 11, 12, and 13 are
R 11 , R 12 , R 13 and the capacitance of capacitor 14 is C 14
Also, the voltage generated across the current detection resistor 6 is V, and the voltage at the inverting input terminal (-) of the comparator 16 is E.
Then, in Fig. 2, the relationship between the inverting input terminal voltage E and the detected voltage V at time t2 is E 1 = R 12 /R 11 + R 12 ×V 1 →E 2 = R 12 /R 11 + R 12 × V 2 Also, the non-inverting input terminal voltage of the comparator 16 changes as V 1 →V 1 +(V 2 −V 1 )(1−e −t/(C 14 +R 13 ) ).
従つてt2時点においては、上記式のｔ＝０とお
いた値が一致したとき、比較器１６の出力が反転
し、モータへの通電が遮断される。 Therefore, at time t2 , when the values set at t=0 in the above equation match, the output of the comparator 16 is inverted and the power to the motor is cut off.
すなわち、ｔ＝０，E2≧V1，R12／R11＋R12×V2≧ V1、従つて、V1／V2≦R12／R11＋R12の関係が成立する とき、モータ３への通電が遮断される。 That is, when the relationship of t=0, E 2 ≧V 1 , R 12 /R 11 +R 12 ×V 2 ≧ V 1 , therefore, V 1 /V 2 ≦R 12 /R 11 +R 12 holds, the motor 3 is cut off.
なお、上述の実施例において、リレー４，５は
スイツチングトランジスタあるいはサイリスタに
置き換えることができる。 In the above embodiments, the relays 4 and 5 can be replaced with switching transistors or thyristors.
以上述べたように本考案においては、過負荷状
態が生じると速やかに駆動モータを停止し、装置
の保全を図ることができるという優れた効果があ
る。 As described above, the present invention has an excellent effect in that when an overload condition occurs, the drive motor can be stopped immediately to maintain the apparatus.
第１図は本考案の一実施例を示す電気結線図、
第２図は第１図に示す回路の作動説明用タイムチ
ヤートである。
３……直流モータ、４，５，７……スイツチン
グ手段をなすリレー接点とリレーコイルとトラン
ジスタ、６……検出抵抗、１１，１２……分圧用
抵抗、１３，１４……時定数用抵抗とコンデン
サ、１６……比較器、２１……タイマ回路。
FIG. 1 is an electrical wiring diagram showing an embodiment of the present invention.
FIG. 2 is a time chart for explaining the operation of the circuit shown in FIG. 3... DC motor, 4, 5, 7... Relay contacts, relay coil, and transistor forming switching means, 6... Detection resistor, 11, 12... Resistor for voltage division, 13, 14... Resistor for time constant. Capacitor, 16... comparator, 21... timer circuit.
Claims (1)
の直流モータの通電路に直列に挿入接続された検
出抵抗、この検出抵抗に並列接続された抵抗分圧
回路、この抵抗分圧回路に接続された抵抗とコン
デンサよりなる遅延回路、上記抵抗分圧回路から
の分圧電圧と上記遅延回路からの遅延電圧とを比
較して両回路のもつ時定数の相違により前記通電
路を流れる電流値の急上昇を判定する比較回路、
この比較回路の判定信号に応答して前記直流モー
タの通電路を開閉するスイツチング手段、および
前記直流モータの起動時に所定の時間だけ前記ス
イツチング手段を閉の状態にさせるタイマ信号を
生じるタイマ回路を具備したことを特徴とする自
動車用補機駆動回路。 A DC motor for driving an automobile's auxiliary equipment, a detection resistor connected in series to the current-carrying path of the DC motor, a resistor voltage divider circuit connected in parallel to this detection resistor, and a resistor voltage divider circuit connected to this resistor voltage divider circuit. A delay circuit consisting of a resistor and a capacitor, which compares the divided voltage from the resistor voltage divider circuit with the delayed voltage from the delay circuit, and detects a sudden increase in the current value flowing through the current-carrying path due to the difference in time constant of both circuits. Comparison circuit for determining
The motor includes switching means for opening and closing the energizing path of the DC motor in response to a determination signal from the comparison circuit, and a timer circuit that generates a timer signal for closing the switching means for a predetermined period of time when the DC motor is started. An automotive auxiliary drive circuit characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP467181U JPS6332756Y2 (en) | 1981-01-16 | 1981-01-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP467181U JPS6332756Y2 (en) | 1981-01-16 | 1981-01-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57117245U JPS57117245U (en) | 1982-07-20 |
| JPS6332756Y2 true JPS6332756Y2 (en) | 1988-09-01 |
Family
ID=29803078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP467181U Expired JPS6332756Y2 (en) | 1981-01-16 | 1981-01-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6332756Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07107345B2 (en) * | 1986-05-29 | 1995-11-15 | 日本電装株式会社 | Drive device with overload protection device |
| JP5324974B2 (en) * | 2009-03-25 | 2013-10-23 | 新明和工業株式会社 | Power supply control device for vehicle cargo handling device |
-
1981
- 1981-01-16 JP JP467181U patent/JPS6332756Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57117245U (en) | 1982-07-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0710199B1 (en) | Testing and speed control of electric motors in vehicles having electronically controlled braking systems | |
| US5051672A (en) | Automatic window/door system | |
| US4926283A (en) | Temperature protected transistor circuit and method of temperature protecting a transistor | |
| US5225751A (en) | Power supply circuit for a motor | |
| JPS6332756Y2 (en) | ||
| JP3964375B2 (en) | Power window drive | |
| JP2004506371A (en) | Two-terminal switch circuit and voltage threshold response circuit components | |
| JPH06501368A (en) | Servo motor control circuit configuration | |
| US4211965A (en) | Device for controlling rotational speed of electric motor | |
| US4035704A (en) | Field weakening sensor circuit | |
| US3809927A (en) | Delay timing circuit | |
| JP3200278B2 (en) | Motor controller | |
| CN114301032A (en) | Switch control device, switch control method, and vehicle-mounted power supply system | |
| US4477758A (en) | Stepping motor overcurrent detection and protection device | |
| GB2034989A (en) | Control of DC series motors | |
| JPH0537632Y2 (en) | ||
| JPH03245772A (en) | Charge protective circuit for capacitor | |
| JPH01170365A (en) | Rush current preventing circuit | |
| JPH062406Y2 (en) | Electric vehicle electric motor controller | |
| JPH0830340A (en) | Dc/dc converter | |
| JP2023117160A (en) | Method for manufacturing control apparatus | |
| US4169242A (en) | Resistor grid protector | |
| JP4099902B2 (en) | Battery forklift control device | |
| JPH0734121Y2 (en) | Control device for power window regulator | |
| JPH073334Y2 (en) | Motor rotation stop judgment circuit |