Wiper motor self-return system
Technical field
The present invention relates to the wiper field, particularly, relate to a kind of wiper motor self-return system.
Background technology
In sleety weather, need open the visiblity of wiper, and when the closing automobile windscreen wiper, need make the windscreen wiper sheet get back to extreme lower position automatically with the assurance driver, influence traffic safety to avoid blocking driver vision.Existing wiper self-return system realizes self-return through mechanical slide switch, and adopts mechanical slide switch to have shortcomings such as quick abrasion and reliability are lower.
Summary of the invention
The objective of the invention is to, to the problems referred to above, propose a kind of wiper motor self-return system, with the advantage that realizes that wearing and tearing are slow, reliability is high.
For realizing above-mentioned purpose, the technical scheme that the present invention adopts is:
A kind of wiper motor self-return system; Comprise storage battery, ignition lock, rain shaving electrical machine switch, normally opened relay, windscreen wiper return switch, controller and windscreen wiper control mechanism; On the windscreen wiper control mechanism motor is installed; Normal open switch, the motor of said storage battery and normally opened relay are cascaded; The coil of said ignition lock, rain shaving electrical machine switch and normally opened relay is cascaded, and the node of said ignition lock and rain shaving electrical machine switch is connected electrically on a port of controller, and the node between the coil of said rain shaving electrical machine switch and normally opened relay is connected electrically on the b port of controller; The c port of said motor and controller is electrically connected, and the e port of said controller and windscreen wiper return switch are electrically connected.
Further, said windscreen wiper control mechanism comprises motor, connecting rod, turbine, worm screw, fork, support and scrapes horse that said endless screw apparatus is on motor; It is provided with screw thread; The screw-threaded engagement of said turbine and worm screw is in the same place, and is coupling together between said connecting rod and the fork, and said support one end is packed on the motor; Its other end is packed on the fork, and the said horse of scraping is coupling on fork.
Further, said windscreen wiper return switch comprises push rod, insulation spacer, housing, binding post, pull back spring, fixed contact and armature contact, and the inner bottom surface of said housing is provided with pull back spring; The both sides of said pull back spring are provided with binding post; One end of said binding post penetrates the bottom of housing, and its other end is provided with fixed contact, above fixed contact, is provided with armature contact; Be provided with insulation spacer above the said armature contact, be provided with push rod above the said insulation spacer.
Technical scheme of the present invention is accepted the signal of ignition lock and windscreen wiper return switch through controller, and the windscreen wiper sheet is in extreme lower position when guaranteeing that the rain shaving electrical machine switch breaks off, and avoids blocking driver vision; Adopt electron steering, avoided the wearing and tearing of mechanical slide switch, guaranteed high reliability simultaneously.
Other features and advantages of the present invention will be set forth in specification sheets subsequently, and, partly from specification sheets, become obvious, perhaps understand through embodiment of the present invention.The object of the invention can be realized through the structure that in the specification sheets of being write, claims and accompanying drawing, is particularly pointed out and obtained with other advantages.
Through accompanying drawing and embodiment, technical scheme of the present invention is done further detailed description below.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification sheets, is used to explain the present invention with embodiments of the invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the circuit electric diagram of wiper motor self-return of the present invention system;
Fig. 2 is the structural representation of windscreen wiper control mechanism in the wiper motor self-return of the present invention system;
Fig. 3 is the structural representation of windscreen wiper return switch in the wiper motor self-return of the present invention system.
In conjunction with accompanying drawing, Reference numeral is following in the embodiment of the invention:
The 1-storage battery, 2-ignition lock, 3-rain shaving electrical machine switch, 4-normally opened relay, 5-rain shaving electrical machine, 6-windscreen wiper return switch; The 7-controller, 5-rain shaving electrical machine, 6-windscreen wiper return switch, 6-1 push rod, 6-2 insulation spacer, 6-3 housing; The 6-4 binding post, 6-5 pull back spring, 6-6 fixed contact, 6-7 armature contact, 8,15, the 17-connecting rod; The 9-worm gear, the 10-worm screw, 11,14, the 16-fork, the 12-support, 13-scrapes horse.
The specific embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for explanation and explains the present invention, and be not used in qualification the present invention.
Like Fig. 1, shown in Figure 2; In a kind of wiper motor self-return disclosed by the invention system; Comprise storage battery 1, ignition lock 2, rain shaving electrical machine switch 3, normally opened relay 4, windscreen wiper return switch 6, controller 7 and windscreen wiper control mechanism, wherein the windscreen wiper control mechanism comprises motor 5, connecting rod 8,15,17, turbine 9, worm screw 10, fork 11,14,16, support 12 and scrapes horse 13, and worm screw 10 devices are on motor 5; It is provided with screw thread; Turbine 9 is in the same place with the screw-threaded engagement of worm screw 10, connecting rod 15,17 and fork 11,14, is coupling between 16 together, and support 12 1 ends are packed on the motor 5; Its other end is packed on the fork 11, scrapes horse 13 and is coupling on fork 14.Storage battery (1) is cascaded with normal open switch, the motor (5) of normally opened relay (4); The coil of ignition lock (2), rain shaving electrical machine switch (3) and normally opened relay (4) is cascaded; The node of ignition lock (2) and rain shaving electrical machine switch (3) is connected on a port of controller (7) through lead; Node between the coil of rain shaving electrical machine switch (3) and normally opened relay (4) is connected on the b port of controller (7) through lead; The c port of motor and controller (7) links together through lead, and the e port of controller (7) and windscreen wiper return switch (6) link together through lead.Controller 7 in this programme adopts the STC89C52 singlechip chip.
As shown in Figure 3, windscreen wiper return switch (6) comprises push rod (6-1), insulation spacer (6-2), housing (6-3), binding post (6-4), pull back spring (6-5), fixed contact (6-6) and armature contact (6-7); The inner bottom surface of housing (6-3) is provided with pull back spring (6-5); The both sides of pull back spring (6-5) are provided with binding post (6-4); One end of binding post (6-4) penetrates the bottom of housing (6-3); Its other end is provided with fixed contact (6-6); Be provided with armature contact (6-7) in the top of fixed contact (6-6), be provided with insulation spacer (6-2) above the armature contact (6-7), be provided with push rod (6-1) above the insulation spacer (6-2).
Wherein the concrete control of wiper motor self-return system as follows: windscreen wiper return switch 6 is closed when the windscreen wiper sheet is in extreme lower position, all is open circuited in other situation.When ignition lock 2 closures, working power is provided for controller 7, when rain shaving electrical machine switch 3 is also closed simultaneously, the rain shaving electrical machine normal operation, controller 7 is not controlled rain shaving electrical machine 5 according to the voltage signal of b terminal; When ignition lock 2 closures and 3 disconnections of rain shaving electrical machine switch, break off like windscreen wiper return switch 6, controller 7 is through c terminal output 12V power supply, and rain shaving electrical machine 5 is rotated further; When windscreen wiper return switch 6 closures, controller 7 receives the bonding signal, and controller 7 is controlled c terminal bonding immediately, self-control is provided, rain shaving electrical machine 5 stall immediately for rain shaving electrical machine 5.
When ignition lock 2 and rain shaving electrical machine switch 3 closures, normally opened relay 4 switch contacts are closed, rain shaving electrical machine 5 normal operation.When rain shaving electrical machine switch 3 broke off, normally opened relay 4 switch contacts broke off, as this moment the windscreen wiper sheet be in extreme lower position, controller 7 control c terminal bonding, rain shaving electrical machine 5 stall immediately; As this moment the windscreen wiper sheet be not in extreme lower position; Controller 7 is through c terminal output 12V power supply; Rain shaving electrical machine 5 is rotated further, and forwards extreme lower position, windscreen wiper return switch 6 closures to up to the windscreen wiper sheet, and controller 7 is controlled c terminal bonding immediately; Self-control is provided, rain shaving electrical machine 5 stall immediately for rain shaving electrical machine 5.
And when rain shaving electrical machine was worked, green phase was answered the leverage driving to scrape horse 13 and is swung back and forth, and made the windscreen wiper sheet work that is installed on it.Windscreen wiper return construction of switch is as shown in Figure 3, when scraping horse 13 and be in extreme lower position, scrapes push rod 6-1 that horse 13 promotes windscreen wiper return switches 6 and overcomes pull back spring elastic force and move down, and armature contact 6-7 connects fixed contact 6-6, switch closure; When scraping horse 13 and be not in extreme lower position, then armature contact 6-7 leaves fixed contact 6-6 under the effect of pull back spring elastic force, and switch breaks off.
What should explain at last is: the above is merely the preferred embodiments of the present invention; Be not limited to the present invention; Although the present invention has been carried out detailed explanation with reference to previous embodiment; For a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.