CN202150692U - Automobile glass elevating switch and motor protector - Google Patents
Automobile glass elevating switch and motor protector Download PDFInfo
- Publication number
- CN202150692U CN202150692U CN201120252933U CN201120252933U CN202150692U CN 202150692 U CN202150692 U CN 202150692U CN 201120252933 U CN201120252933 U CN 201120252933U CN 201120252933 U CN201120252933 U CN 201120252933U CN 202150692 U CN202150692 U CN 202150692U
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Abstract
The utility model relates to an automobile glass elevating switch and a motor protector. In an elevating switch, a heavy current is prevented from passing the switch, a motor-driven heavy current is driven by a relay, and the switch only provides the voltage control signal of a milliampere grade current. An information acquisition circuit includes a sampling resistor and a pai filter comprising a filtering capacitor, a filtering resistor and a filtering capacitor. An information processing circuit includes an amplifier and a series of capacitance-resistance elements. A driving circuit comprises a time-base circuit, a transistor and a relay in sequence. When the operation of the motor is stopped, a heavy current generates a rotation stop signal on the sampling resistor, the signal is filtered smoothly by the filter to enable the negative terminal voltage of a comparator greater than the positive terminal voltage, the comparator outputs a negative jumping signal, the time-base circuit is triggered to work and output positive pulse square wave, which is added to the base electrodes of a first transistor Q1 and a third transistor Q3 respectively through a second resistor R2 and a fifth resistor R5, a relay ZD1 and a relay ZD2 are in a normal open state, a motor Mo1 stops rotating, and the motor is protected from damage.
Description
Technical field
The utility model is a kind of protection equipment to vehicle glass lifting switch, motor, belongs to the technical field that car accessories are made.
Background technology
Vehicle glass lifting has manual, electronic two kinds; Be the indispensable function of each automobile, under electric functions, can burn out direction switch and motor for various reasons; Making troubles for the producer, user, in the time of at present to direction switch, motor also there is not the product of protection.
Summary of the invention
Technical problem:The goal of the invention of the utility model just provide one simple in structure, when reliability is high to the protector of direction switch, electric motor protecting
Technical scheme:The protection scheme of motor has multiple, and automobile has left-hand door, You Men, therefore control branch single channel control (each car has two), or two-way control (one in each car).Moreover, the user also requires direction switch, lifting motor are controlled simultaneously and protected.
This protector comprises: switch protection circuit, information acquisition circuit, information-processing circuit and motor-drive circuit, wherein:
Switch protection circuit: Motor drive high current is provided by the relay, the relay action with lift switch control signals to control the lift switch provides a voltage signal to the fourth voltage signal input terminal, the voltage signal via the first diode, the first a resistor, the third resistor divider coupled to the second base of the transistor, so that the second transistor, the first relay, power arm, the first switch active terminator positive supply, the third voltage signal input terminal the OV level, the fourth transistor is turned off, the second relay is normally open, and the second free end of the switch close to 0v, the motor forward rotation; the same voltage is applied to the third voltage signal Xin number input terminal, the power supply voltage through the sixth two diode, a fourth resistor, a sixth resistor divider connected to the base of the fourth transistor, so that the fourth transistor is turned on, the second relay, the arm on the supply voltage, the second power supply switching activity is terminated, and fourth voltage signal input to OV, the first relay normally-state, is close to the free end of the first switch 0v voltage, motor reverse rotation;
Information acquisition circuit comprises sampling resistor and by the 4th filter capacitor, the 9th filter resistance, the filter that the 6th filter capacitor is formed;
Signal processing circuit comprises the comparator that amplifier and a series of Resistor-Capacitor Unit are formed; Output voltage on the 6th filter capacitor is through the input in the same way of the reference electrode crimping amplifier of the 11 resistance, the acquisition of the 12 electric resistance partial pressure, and two of the 13 resistance of positive feedback terminates on the input in the same way and output of amplifier.
Motor-drive circuit comprises time-base circuit, the first transistor, the 3rd transistor, transistor seconds, the 4th transistor, first relay, second relay; Negative skip signal of output output of amplifier connects the input of time-base circuit, triggers time-base circuit work, the output output positive pulse square wave of time-base circuit; Respectively through second resistance; The 5th resistance is added to the first transistor and the 3rd transistorized base stage, makes the first transistor and the 3rd transistor turns, and transistor seconds, the 4th transistor all end; First relay, second relay are in normally off, the motor stall.
On the described time-base circuit; Adopt reset resistor; Reset diode, reset capacitance constitute the forced resetting circuit, and wherein reset resistor, reset diode are attempted by on the reset terminal of time-base circuit, the reset terminal of reset capacitance one termination time-base circuit; Other end ground connection guarantees that protector gets into normal operating conditions once starting shooting.
The switch ends of first relay respectively and connect second electric capacity, the 4th diode and the 5th diode constitutes arc-suppression circuit; The switch ends of second relay respectively and connect the 3rd electric capacity, the 8th diode and the 9th diode constitutes arc-suppression circuit; At the two ends of motor and be connected to the 7th resistance and be used for arc extinguishing.
The collector of said second transistor between the power supply and the third diode, the collector of the fourth transistor between the power supply and the seventh diode, the second transistor to prevent the motor stops, the fourth transistor is turned off, the relay line High voltage breakdown Quan produce the second transistor and the fourth transistor.
The window lifting switch signal is taken from supply voltage; The undersuing of certain amplitude can be punched transistor seconds, the 4th transistorized base stage knot to emitter on the power supply; For this reason, the employing of first diode and the 6th diode just can prevent the generation of this phenomenon.
Beneficial effect:The beneficial effect of the utility model is that circuit is succinct, dependable performance, starting to control property are good.
Circuit is succinct: this circuit adopts 1 LM358,1 NE555,2 relays (relay scheme), 4 are merely hit, and low-power transistor adds common capacitance-resistance, diode is assembled in little printed board of 43*51, and pushing high at the wide * of long * is in the small plastic box of 58*48*31.
Dependable performance: what circuit adopted all is common circuit, adopts optimal design, as illustrates 1 employing like positive feedback; Be lower than the anode 3 pin level of amplifier when IC1 input negative terminal 2 pin level; Exporting 1 pin is high level, in case the motor stall, big electric current in the pressure drop on the sampling resistor through making negative terminal voltage after the filter smoothing filtering greater than the comparative voltage on the resistance R 12; This discharge circuit is upset just; Output end voltage is by high step-down, and this negative leaping voltage is reflected in the reduction of the positive input terminal comparative voltage of discharge circuit, so more helps the upset of discharge circuit.
Starting to control property is good: be because electrical equipment is various on the automobile, interference is many, and an often start, the time-base circuit output level is indefinite; There have height to have to be low, that is to say that triode Q1, Q3 receive the driving of indefinite signal, makes relay one start also be in labile state; Starting to control property shakiness, the utility model be owing to adopted the interrupt circuit of highest level, makes the output of time-base circuit; One start is low level all the time, has guaranteed that Q1, Q3 are in cut-off state, and the user can follow one's bent and control glass lifting.
Description of drawings
Fig. 1 is the power supply reason figure of the relay drive scheme of the utility model.
Embodiment
The utility model motor-vehicle glass window direction switch, motor protecter comprise switch protection circuit, information acquisition circuit, signal processing circuit and drive circuit.
The protection of switch: the big electric current of the driving of automobile lifting motor provided via direction switch in the past, and current values is big first, moment overcurrent bigger, frequent operation second, so it belongs to consumable accessory.The method of protection is that big electric current provides without switch, and employing can be born the device of big electric current and accomplished, and control voltage signal (milliampere level electric current) only is provided on the switch.
If the power source voltage Vcc switching signal is added to the 4th voltage signal input P4 (being assumed to be the glass rising signals), behind first resistance R 1,3 liang of electric resistance partial pressures of the 3rd resistance R, be added to the base stage of transistor seconds Q2, transistor seconds Q2 conducting; The first relay ZD1 adhesive; Vcc voltage is added to the first switch movable end P7, this moment the second relay ZD2 contact normal open, second switch movable end P8 point current potential lies prostrate near zero; Motor M o1 running, glass rises.
When the power source voltage Vcc switching signal is added to tertiary voltage signal input part P3 (being assumed to be the glass dropping signal); The 4th triode Q4 conducting; The second relay ZD2 adhesive, Vcc voltage is added to second switch movable end P8, and this moment, the 4th voltage signal input P4 point voltage was 0v; The second triode Q2 ends, and normal open state is recovered to be in the first relay ZD1 contact.First switch movable end P7 point current potential approximate zero volt, motor M o1 counter-rotating, glass lowers.
The arc extinguishing measure
Because the first relay ZD1, the second relay ZD2 bear very big electric current, it is crucial that arc extinguishing becomes, the running of motor alternation; So added piezo-resistance R7; The 4th diode D4, the 8th diode D8, second capacitor C 2, the 3rd capacitor C 3, unsettled in order to eliminate in relay swinging arm process in addition; And the negative pulse that on motor, produces has added the 5th diode D5, the 9th diode D9 sponges harmful negative pulse.
Signal acquisition circuit comprises the π filter that the tenth sampling resistor R10 and the 4th filter capacitor C4, the 9th filter resistance R9 the 6th filter capacitor C6 form.
Signal processing circuit is by the first amplifier IC1; Comparator with a series of Resistor-Capacitor Units compositions; Output on the 6th capacitor C 6 is compared be pressed in the last comparison reference voltage that obtains of R12 in 12 minutes by the 11 resistance R the 11, the 12 resistance R, and the 13 resistance R 13 of positive feedback is connected on the 1st pin and the 3rd pin of amplifier IC1.
Drive circuit adopts the relay mode, and one works as the big electric current of drive motors surpasses set point, on the tenth sampling resistor R10, produces over-current signal; After filtering, signal voltage is greater than the reference voltage on the 12 resistance R 12, and the first amplifier IC1 overturns; Output is by high step-down, and comparator output negative pulse is through the 8th capacitor C8, the 14 resistance R 14; The tenth diode D10 ac-coupled circuit is delivered to the crus secunda of time-base circuit IC2, tripod output high level pulse; Make the first transistor Q1, the 3rd transistor Q3 conducting, and then make transistor seconds Q2, the 4th transistor Q4 end.The first relay ZD1, the second relay ZD2 all are normal open state.The first switch movable end P7, second switch movable end P8 are 0 level, the motor stall, thus avoided the long-time overcurrent of motor and burnt.
After the motor stall, the signal on the sampling resistor is 0, is input as 0 at comparison amplifier IC1 negative terminal, and the comparator negative terminal voltage is lower than positive terminal voltage, and comparator output terminal 1 pin returns to high level, and rising edge is inoperative to time-base circuit.This moment, time-base circuit was by the 16 resistance R 16 and the 11 capacitor C 11 timing operations regularly.In a single day timing circuit is output as 0 level, and the first transistor Q1 and the 3rd transistor Q3 are cut-off state.The motor operation is controlled by switch fully, and this just rises and rises, and this just falls and falls.
Here to stress:
(1) electrical appliance is various on the automobile, and electromagnetic interference is disorderly and unsystematic, in order to guarantee that a start is an operate as normal, also promptly turns on the power switch, and motor goes up and down, and is followed one's bent by the operator, and prerequisite is to guarantee that relay ZD1, ZD2 are normally offs.Therefore joined reset resistor R13 to time-base circuit, reset diode D15, reset capacitance C9 please read accompanying drawing.
(2) taked a series of arc extinguishing measures,, disposed second capacitor C 2, the three capacitor C, 3, the four diode D4 and the 8th diode D8, the 5th diode D5 and the 9th diode D9 and the direct seven piezo-resistance R7 parallelly connected with motor like accompanying drawing.
(3) as shown in the figure: feedback resistance is that the 13 resistance R 13 is connected into the positive feedback form in the comparator, and reaction is quicker, and output waveform is steeper, and it is more stable to work.
(4) electrical appliance is a lot of on the automobile, and the various positive and negative impulse disturbances of sending are also many, added second diode D2 and first filter capacitor C1, has and has blocked the interference of negative pulse to this system circuit.There are also on the positive pulse interference filter function, the third diode D3, the seventh diode D7, used when the second transistor Q2, the fourth transistor Q4 off instant relay line Quan on the collector generate high peak inverse voltage , once more than power supply voltage is clamped to the supply voltage, the protection of the second transistor Q2, the fourth transistor Q4 is not breakdown.
Claims (4)
1. the protector of vehicle glass lifting switch and motor is characterized in that this protector comprises: switch protection circuit, information acquisition circuit, information-processing circuit and motor-drive circuit, wherein:
Switch protection circuit: Motor drive high current is provided by the relay, the relay action with lift switch control signals to control the lift switch provides a voltage signal to the fourth voltage signal input terminal (P4), the voltage signal via a first diode tube (D1), a first resistor (R1), a third resistor (R3) connected to the second voltage divider transistor (Q2) to the base, so that the second transistor (Q2) is turned on, the first relay (ZD1) action, arm power, the first switch movable end (P7) connected to the positive supply, and the third voltage signal input (P3) is 0V level, the fourth transistor (Q4) off and the second relay (ZD2) is normally state , free end of the second switch (P8) close to 0v, the motor (M01) forward rotation; the same voltage is applied to the third voltage signal Xin number input terminal (P3), the supply voltage via the sixth diode (D6), the fourth resistor (R4), a sixth resistor (R6) connected to the partial pressure of the fourth transistor (Q4) the base, so that the fourth transistor (Q4) is turned on, the second relay (ZD2) action, the swing arm on the supply voltage, second switch movable end (P8) connected to the positive supply, and the fourth voltage signal input terminal (P4) is 0V, the first relay (ZD1) often state, the first switch movable end (P7) is close to 0v voltage, motor ( M01) reverse rotation;
Information acquisition circuit comprises sampling resistor (R10) and by the 4th filter capacitor (C4), the 9th filter resistance (R9), the filter that the 6th filter capacitor (C6) is formed;
Signal processing circuit comprises the comparator that amplifier (IC1) and a series of Resistor-Capacitor Unit are formed; Output voltage on the 6th filter capacitor (C6) is through the input in the same way of the reference electrode crimping amplifier (IC1) of the 11 resistance (R11), the acquisition of the 12 resistance (R12) dividing potential drop, and two of the 13 resistance (R13) of positive feedback terminates on the input in the same way and output of amplifier (IC1);
Motor-drive circuit comprises time-base circuit (IC2), the first transistor (Q1), the 3rd transistor (Q3), transistor seconds (Q2), the 4th transistor (Q4), first relay (ZD1), second relay (ZD2); Negative skip signal of output output of amplifier (IC1) connects the input of time-base circuit; The work of triggering time-base circuit; The output output positive pulse square wave of time-base circuit, through second resistance (R2), the 5th resistance (R5) is added to the base stage of the first transistor (Q1) and the 3rd transistor (Q3) respectively; Make the first transistor (Q1) and the 3rd transistor (Q3) conducting; Transistor seconds (Q2), the 4th transistor (Q4) all end, and first relay (ZD1), second relay (ZD2) are in normally off, the motor stall.
2. the protector of vehicle glass lifting switch according to claim 1 and motor; It is characterized in that on the described time-base circuit (IC2); Adopt reset resistor (R15); Reset diode (D11), reset capacitance (C9) constitute the forced resetting circuit, and wherein reset resistor (R15), reset diode (D11) are attempted by on the reset terminal of time-base circuit (IC2), the reset terminal of reset capacitance (C9) termination time-base circuit (IC2); Other end ground connection guarantees that protector gets into normal operating conditions once starting shooting.
3. the protector of vehicle glass lifting switch according to claim 1 and motor, the switch ends that it is characterized in that first relay (ZD1) are respectively and connect second electric capacity (C2), the 4th diode (D4) and the 5th diode (D5) and constitute arc-suppression circuit; The switch ends of second relay (ZD2) respectively and connect the 3rd electric capacity (C3), the 8th diode (D8) and the 9th diode (D9) constitutes arc-suppression circuit; At the two ends of motor (M01) and be connected to the 7th resistance (R7) and be used for arc extinguishing.
As claimed in claim 1, wherein the automotive window switch and motor protector, characterized in that said second transistor (Q2) between the power supply and the collector of the third diode (D3), the a fourth transistor (Q4) between the power supply and the collector of the seventh diode (D7), the second transistor to prevent the motor stops (Q2), a fourth transistor (Q4) off, the relay lines produce high backpressure Quan breakdown of the second transistor (Q2) and a fourth transistor (Q4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120252933U CN202150692U (en) | 2011-07-18 | 2011-07-18 | Automobile glass elevating switch and motor protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120252933U CN202150692U (en) | 2011-07-18 | 2011-07-18 | Automobile glass elevating switch and motor protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202150692U true CN202150692U (en) | 2012-02-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120252933U Expired - Lifetime CN202150692U (en) | 2011-07-18 | 2011-07-18 | Automobile glass elevating switch and motor protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202150692U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104460697A (en) * | 2014-10-31 | 2015-03-25 | 浙江捷昌线性驱动科技股份有限公司 | Method and device for achieving return of electric lifting table when obstruction is encountered through current dual-filter mode |
-
2011
- 2011-07-18 CN CN201120252933U patent/CN202150692U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104460697A (en) * | 2014-10-31 | 2015-03-25 | 浙江捷昌线性驱动科技股份有限公司 | Method and device for achieving return of electric lifting table when obstruction is encountered through current dual-filter mode |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120222 |