CN201207355Y - Interval relay and windshield wiper motor - Google Patents
Interval relay and windshield wiper motor Download PDFInfo
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- CN201207355Y CN201207355Y CNU2008201145436U CN200820114543U CN201207355Y CN 201207355 Y CN201207355 Y CN 201207355Y CN U2008201145436 U CNU2008201145436 U CN U2008201145436U CN 200820114543 U CN200820114543 U CN 200820114543U CN 201207355 Y CN201207355 Y CN 201207355Y
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Abstract
The utility model discloses a gap relay and a wiper motor, which is designed for solving the problem of high cost and price of wiper motor in the prior art. The wiper motor is composed of a motor which is connected with the gap relay, a speed-down box is arranged on the motor, and a switch of the reduction gear box includes a worm wheel reset sheet, a first connecting sheet, a second connecting sheet and a third connecting sheet; an exterior port of the gas relay includes a first input end, a second input end, a third input end, an output end and a grounding end; the anode of a power supply is respectively connected with the third input end and the third connecting sheet through a second intermittent switch; the third input end is connected with the first input end through a third intermittent switch; the second input end is connected with the first connecting sheet; the output end is connected with the anode of the motor through the third intermittent switch; and the grounding end, the second connecting sheet and the cathode of the motor are completely connected with the cathode of the power supply. The utility model is particularly applied to rain wiper for auto cars.
Description
Technical Field
The utility model relates to a motor, in particular to clearance relay and windscreen wiper motor that has this clearance relay.
Background
The motor of the automobile wiper is one of small motors for automobiles, and is mainly used for driving a wiper blade of a wiper to wipe dirt such as rain, snow, dust and the like on a windshield of the automobile, so that the driving safety of a driver is ensured. The permanent-magnet DC motor developed successfully in the seventies of the last century replaces the traditional wire-wound electric excitation motor with the advantages of light weight, simple structure, small volume, simple and convenient process, low price, high power and the like. Compared with the traditional motor, the permanent magnet direct current motor can save 30-50% of colored, black and other metals, reduce 25-30% of manufacturing time and save 25-50% of electric energy consumption. Over the two decades, there has been no major change or breakthrough in the technology of permanent magnet dc motors. Until the last decade, germany Bosch (Bosch) company has successfully developed a high-performance and high-strength permanent magnet dc motor with three-branch structure using low-noise rolling bearings and designs of worm-helical gears as main contents, and french Valeo (french) company has successfully developed a novel wiper motor with a double-headed bidirectional parallel reduction structure (MFD) between a driving shaft and a driven shaft, so that the wiper motor has new development. However, the cost and price of the two motors are high, and the two motors are not beneficial to popularization and use.
SUMMERY OF THE UTILITY MODEL
On the one hand, the utility model provides a reasonable in design, low price's clearance relay.
In order to achieve the above object, the embodiments of the present invention adopt the following technical solutions:
an external port of the gap relay comprises a first input end, a second input end, a third input end, an output end and a grounding end, an internal circuit of the gap relay comprises a triode and a voltage relay, the voltage relay comprises a relay coil, a first contact, a second contact and a third contact, the first contact and the second contact are normally open contacts, and the first contact and the third contact are normally closed contacts; wherein,
the first input end, the second input end and the output end are respectively connected with the third contact, the second contact and the first contact;
the third input end is connected with the collector of the triode through the relay coil, and the emitter of the triode is connected with the grounding end;
a first resistor and a second resistor are connected in series between the second input end and the base electrode of the triode, and the first resistor and the second resistor are connected with the grounding end through a capacitor;
and a third resistor is connected between the base electrode and the emitter electrode of the triode.
The utility model provides a gap relay passes through the charge-discharge of control electric capacity, break-make that can nimble control voltage relay, its reasonable in design, low price.
On the other hand, the utility model provides a reasonable in design, low price's windscreen wiper motor.
In order to achieve the above object, the embodiments of the present invention adopt the following technical solutions:
a wiper motor comprises a motor connected with a gap relay, wherein a reduction gearbox is arranged on the motor, a switch is arranged on the reduction gearbox, the switch comprises a worm gear resetting piece with a worm gear salient point, a first connecting piece, a second connecting piece and a third connecting piece, the first connecting piece, the second connecting piece and the third connecting piece are arranged corresponding to the worm gear resetting piece, and the second connecting piece and the third connecting piece are in a negative lock relation;
the external port of the gap relay comprises a first input end, a second input end, a third input end, an output end and a grounding end, the internal circuit of the gap relay comprises a triode and a voltage relay, the voltage relay comprises a relay coil, a first contact, a second contact and a third contact, the first contact and the second contact are normally open contacts, and the first contact and the third contact are normally closed contacts;
the first input end, the second input end and the output end are respectively connected with the third contact, the second contact and the first contact;
the third input end is connected with the collector of the triode through the relay coil, and the emitter of the triode is connected with the grounding end;
a first resistor and a second resistor are connected in series between the second input end and the base electrode of the triode, and the first resistor and the second resistor are connected with the grounding end through a capacitor;
a third resistor is connected between the base electrode and the emitting electrode of the triode;
the positive electrode of the power supply is respectively connected with the third input end and the third connecting piece through a second intermittent switch; the third input end is also connected with the first input end through a third intermittent switch; the second input end is connected with the first connecting sheet; the output end is connected with the positive pole of the motor through a first intermittent switch; and the grounding end, the second connecting sheet and the negative electrode of the motor are all connected with the negative electrode of the power supply.
The utility model provides an among the windscreen wiper motor, clearance relay passes through the charge and discharge of control electric capacity, can control voltage relay's break-make in a flexible way to reach the purpose of control motor intermittent time, its reasonable in design, low price.
Drawings
Fig. 1 is a schematic circuit diagram of the wiper motor of the present invention;
fig. 2 is a schematic view of the sectional structure of the wiper motor of the present invention.
Detailed Description
The utility model provides a reasonable in design, low price's clearance relay and rain scrape the motor, it is right to combine the drawing below the utility model discloses carry out detailed description.
As shown in fig. 1, the wiper motor of the present invention includes a motor 21 connected to a gap relay 20. The motor 21 itself has a reduction box inside which a switch 22 is located. The switch 22 includes a worm wheel reset piece 23, a first connection piece a, a second connection piece b and a third connection piece c which are correspondingly arranged with the worm wheel reset piece 23, wherein the first connection piece a and the worm wheel reset piece 23 are always in a contact state, the second connection piece b and the third connection piece c are in a negative lock relationship, that is, only one of the connection pieces b and c is in contact with the worm wheel reset piece 23 at any time, so that the connection pieces a and b are communicated, or the connection pieces a and c are communicated.
Next, the structure of the gap relay 20 is described, and as shown in fig. 1, its external ports include a first input terminal 7, a second input terminal 8, a third input terminal 9, an output terminal 10, and a ground terminal 11; the internal circuit of the voltage relay comprises a triode T and a voltage relay J, wherein the voltage relay J comprises a relay coil, a first contact x, a second contact y and a third contact z, the first contact x and the second contact y are normally open contacts, and the first contact x and the third contact z are normally closed contacts;
the first input end 7, the second input end 8 and the output end 10 are respectively connected with the third contact z, the second contact y and the first contact x; the third input end 9 is connected with the collector of the triode T through the relay coil, and the emitter of the triode T is connected with the grounding end 11; a first resistor R1 and a second resistor R2 are connected in series between the second input end 8 and the base electrode of the triode T, and the first resistor R1 and the second resistor R2 are connected with a grounding end 11 through a capacitor C; and a third resistor R3 is connected between the base electrode and the emitter electrode of the triode T.
The gap relay 20, the motor 21, and the power source are connected as follows:
the positive electrode of the power supply is respectively connected with a third input end 9 and a third connecting piece c through a second intermittent switch ( contacts 4 and 5 corresponding to INT in figure 1); the third input 9 is also connected to the first input 7 via a third intermittent switch (5, 6 contacts corresponding to INT in fig. 1); the second input 8 is connected to the first connection tab a; the output terminal 10 is connected to the positive pole of the motor (this terminal is the low-gear input terminal of the motor in fig. 1) via a first intermittent switch (1, 2 contacts corresponding to INT in fig. 1); the ground terminal 11, the second connecting piece b and the negative electrode of the motor 21 are all connected with the negative electrode of the power supply.
In addition, the wiper motor of the present embodiment is further provided with a fast gear, a slow gear and a reset gear, which are respectively HI, LO and OFF contact switches provided on the circuit board shown in fig. 1. The fast gear is connected by connecting the high gear input of the electric motor 21 to the positive pole of the power supply via a fast switch (3, 4 contacts corresponding to HI in fig. 1), and the slow gear is connected by connecting the low gear input of the electric motor 21 to the positive pole of the power supply via a slow switch (2, 4 contacts corresponding to LO in fig. 1). The reset gear is used for connecting the positive pole of the power supply with a third input end 9 and a third connecting sheet c through a second reset switch ( contacts 4 and 5 corresponding to OFF in figure 1); while the output 10 is connected to the positive pole (here the low input) of the motor 21 via a first reset switch (1, 2 contacts for OFF in fig. 1).
The working principle of the embodiment is detailed as follows:
when the fast gear is selected, the current flows from the positive pole of the power supply through the contacts 4 and 3 corresponding to the HI, then flows back to the negative pole of the power supply through the high-speed gear input end of the motor 21, and the motor 21 runs at a high speed.
When the slow gear is selected, current flows from the positive pole of the power supply through the 4 and 2 contacts corresponding to the LO, and then flows back to the negative pole of the power supply through the low gear input terminal of the motor 21, and the motor 21 runs at a low speed.
When the reset position is selected, current flows from the positive pole of the power supply through the second reset switch (the 4 and 5 contacts corresponding to OFF) to the third input terminal 9 and the third connecting piece c. Because the motor 21 is not reset, the connection sheets a and C are communicated, so that the current flows through the connection sheets C and a, then flows through the resistors R1 and R2, the triode T and the capacitor C to the negative electrode of the power supply, thereby charging the capacitor C on one hand, on the other hand, the voltage relay J is attracted, the contacts x and y are conducted, therefore, the current flows through the connection sheets C and a, the contacts y and x, and then flows through the first reset switch (1 and 2 contacts corresponding to OFF) to the low-speed gear input end of the motor 21, and the motor 21 runs at a low speed.
The motor 21 runs and drives the worm wheel reset sheet 23 to rotate, when the angle is rotated to a certain angle, the connecting sheets a and c are disconnected, the connecting sheets a and b are connected, the motor is short-circuited, and therefore the motor is braked by energy consumption, the wiper is reset, and meanwhile the power supply is cut off. If the connecting sheets a and b are communicated, the windscreen wiper is in a reset state, and the reset operation is not needed.
When the intermittent position is selected, current flows from the positive pole of the power supply through the second intermittent switch (4, 5 contacts for INT) to the third input terminal 9 and the third connecting piece c, similar to the reset operation. At this time, the connection pieces a and C are connected, the current passes through the connection pieces C and a in sequence, then flows through the resistors R1 and R2, the triode T and the capacitor C to the negative electrode of the power supply, so that the capacitor C is charged on one hand, on the other hand, the voltage relay J is attracted, and the contacts x and y are connected, so that the current passes through the connection pieces C and a, the contacts y and x, then passes through the first intermittent switch (1 and 2 contacts corresponding to INT) to the low-speed input end of the motor 21, and the motor 21 operates at a low speed.
After the motor runs for a certain time, the connecting sheets a and c are disconnected, the connecting sheets a and b are connected, the motor is short-circuited, and therefore the motor is braked by energy consumption, the reset of the windscreen wiper is achieved, and meanwhile the power supply is broken. At this time, the capacitor C is at a high voltage, so that the triode T is turned on, the voltage relay J maintains a pull-in state, and the contacts x and y are still turned on. The process is a batch phase.
When the voltage of the capacitor C is reduced to a certain value, the triode T is cut off, the voltage relay J is changed from the attraction state to the disconnection state, the contacts x and y are disconnected, the contacts x and z are communicated, and therefore current flows through the third intermittent switch (5 and 6 contacts corresponding to INT), the contacts z and x, the first intermittent switch (1 and 2 contacts corresponding to INT) to the low-speed input end of the motor 21 in sequence from the positive pole of the power supply, and the motor 21 runs at a low speed. The motor 21 is changed from a reset state to a non-reset state, the circuit repeats the working process, and the wiper motor realizes intermittent work.
In this embodiment, the resistors R1, R2, and R3 function to control the charging and discharging time of the capacitor C. In order to protect the circuit, a diode D is further connected between the resistors R1 and R2, the anode of the diode D is connected with the resistor R1, and the cathode of the diode D is connected between the resistor R2 and the capacitor C. The diode D can also play roles of rectification, isolation, voltage stabilization, polarity protection and the like. In addition, the transistor T may be a darlington transistor to improve its driving capability.
As shown in fig. 2, the utility model discloses a motor includes stator 30 and rotor 31, and rotor 31 adopts the suspension type, fixes inside stator 30 through the antifriction bearing 32 that sets up at its middle part promptly to remove traditional two steel ball structures, eliminated the wearing and tearing of during operation, reduce the motor during operation noise, the torque is big, the good reliability, the quality is more stable, and when having eliminated and having used the steel ball, the steel ball is transferred into the gear box and is caused the dead hidden danger of motor card, has played the effect of design mistake proofing.
The utility model provides an among the windscreen wiper motor, clearance relay is through filling, discharging of control electric capacity, and break-make that can nimble control voltage relay to reach control motor intermittent time's purpose, reasonable in design, excellent performance, sexual valence ratio are higher.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A gap relay is characterized in that an external port of the gap relay comprises a first input end, a second input end, a third input end, an output end and a grounding end, an internal circuit of the gap relay comprises a triode and a voltage relay, the voltage relay comprises a relay coil, a first contact, a second contact and a third contact, the first contact and the second contact are normally open contacts, and the first contact and the third contact are normally closed contacts; wherein,
the first input end, the second input end and the output end are respectively connected with the third contact, the second contact and the first contact;
the third input end is connected with the collector of the triode through the relay coil, and the emitter of the triode is connected with the grounding end;
a first resistor and a second resistor are connected in series between the second input end and the base electrode of the triode, and the first resistor and the second resistor are connected with the grounding end through a capacitor;
and a third resistor is connected between the base electrode and the emitter electrode of the triode.
2. A gap relay according to claim 1, wherein a diode is further connected between the first resistor and the second resistor, the anode of the diode is connected to the first resistor, and the cathode of the diode is connected between the second resistor and the capacitor.
3. A gap relay according to claim 2, characterised in that the transistor is a darlington transistor.
4. A wiper motor comprises a motor connected with a gap relay, wherein a reduction gearbox is arranged on the motor, a switch is arranged on the reduction gearbox, the switch comprises a worm gear reset piece with a worm gear convex point, and a first connecting piece, a second connecting piece and a third connecting piece which are arranged corresponding to the worm gear reset piece, and the second connecting piece and the third connecting piece are in a negative lock relation;
the first input end, the second input end and the output end are respectively connected with the third contact, the second contact and the first contact;
the third input end is connected with the collector of the triode through the relay coil, and the emitter of the triode is connected with the grounding end;
a first resistor and a second resistor are connected in series between the second input end and the base electrode of the triode, and the first resistor and the second resistor are connected with the grounding end through a capacitor;
a third resistor is connected between the base electrode and the emitting electrode of the triode;
the positive electrode of the power supply is respectively connected with the third input end and the third connecting piece through a second intermittent switch; the third input end is also connected with the first input end through a third intermittent switch; the second input end is connected with the first connecting sheet; the output end is connected with the positive pole of the motor through a first intermittent switch; and the grounding end, the second connecting sheet and the negative electrode of the motor are all connected with the negative electrode of the power supply.
5. The wiper motor of claim 4 wherein a diode is further connected between the first resistor and the second resistor, the diode having an anode connected to the first resistor and a cathode connected between the second resistor and the capacitor.
6. The wiper motor of claim 5 wherein the transistor is a Darlington transistor.
7. The wiper motor of any one of claims 4 to 6 wherein the positive power supply is further connected to a third input terminal and a third connecting piece via a second reset switch, respectively;
the output end is also connected with the positive pole of the motor through a first reset switch.
8. The wiper motor according to any one of claims 4 to 6 wherein the motor comprises a stator and a rotor, the rotor being fixed inside the stator by a rolling bearing provided at a middle portion thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201145436U CN201207355Y (en) | 2008-05-23 | 2008-05-23 | Interval relay and windshield wiper motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201145436U CN201207355Y (en) | 2008-05-23 | 2008-05-23 | Interval relay and windshield wiper motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201207355Y true CN201207355Y (en) | 2009-03-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201145436U Expired - Fee Related CN201207355Y (en) | 2008-05-23 | 2008-05-23 | Interval relay and windshield wiper motor |
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| Country | Link |
|---|---|
| CN (1) | CN201207355Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103683679A (en) * | 2013-08-09 | 2014-03-26 | 张岳峰 | An electronic-type contactless unidirectionally-rotating intelligent windscreen wiper electric motor |
| CN104702178A (en) * | 2015-02-12 | 2015-06-10 | 洛阳市同圆电子有限公司 | Control system of wiper motor |
| WO2018086500A1 (en) * | 2016-11-12 | 2018-05-17 | 广州市金矢电子有限公司 | Device for dynamically extinguishing electric arc of electrode |
-
2008
- 2008-05-23 CN CNU2008201145436U patent/CN201207355Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103683679A (en) * | 2013-08-09 | 2014-03-26 | 张岳峰 | An electronic-type contactless unidirectionally-rotating intelligent windscreen wiper electric motor |
| CN104702178A (en) * | 2015-02-12 | 2015-06-10 | 洛阳市同圆电子有限公司 | Control system of wiper motor |
| WO2018086500A1 (en) * | 2016-11-12 | 2018-05-17 | 广州市金矢电子有限公司 | Device for dynamically extinguishing electric arc of electrode |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090311 Termination date: 20130523 |