CN201994784U - Automobile wiper motor with reset and vibration prevention functions - Google Patents

Abstract

The utility model discloses an automobile wiper motor with reset and vibration prevention functions. A reset plate of the motor is separated from a worm wheel, is laid on the end surface of a reset disc, is connected with a cover plate and can freely rotate. Three reeds: an anode reed, a reset reed and a cathode reed are arranged in a cover plate sub assembly, are arranged on a 120-degree equant circle at the axis of the worm wheel and are in contact with different positions of a metal plate of the reset disc, two lug bosses are arranged on the end surface of the worm wheel, the reset disc can be driven to rotate, and the goal of controlling the reset of the motor is reached. The reset disc can not reversely rotate even when the reset is not in place, and the worm wheel reversely rotates, and the goal of preventing the ablating fault of the motor is reached. From the appearance, wiper blades do not have repeated vibration phenomena. The manufacturability of the automobile wiper motor can also meet the mass production requirement.

Description

A kind of wiper motor with the anti-function of trembling that resets

Technical field

The utility model relates to the structure field of realizing the wiper motor reset function, particularly relates to a kind of wiper motor with the anti-function of trembling that resets.

Background technology

The function of wiper is that transmission mechanism drives two to scrape the dirt that lever arm and windshield wiper blade scrape off on the windshield dirty before the automobile, behind the wiper several times, stir reset switch, cut off main power source, to reset circuit and low speed line of vehicle body relay connected, and continues not cause scraping arm and windshield wiper blade to be parked in the optional position of windshield to the motor power supply by the restoring board clutch position switch on the motor worm gear, but scraping arm and windshield wiper blade are got back to till the original stand, so-called " generator brake effect ".At this moment, worm gear restoring board clutch position switch is in off-position, and this is the General Principle of the automatic off-position system of vehicle wiper.

But in actual use, for various reasons, as: the accumulation of snow, situations such as viscosity damping on glass is big especially, the driver has little understanding, though stir reset switch, cut off main power source, but windshield wiper blade possibly can't turn back to original stand sometimes, but is parked in the critical localisation of a power on/off, and promptly the restoring board clutch position switch on the worm gear is in when repeating to change between the connecting and disconnecting state, presentation is trembling of scraping arm and windshield wiper blade, the contact portion of reseting leaf short circuit repeatedly causes spark, and the plastics position of scorification worm gear causes motor to lose efficacy.Though this fault probability of happening is not high, brings inconvenience to the user really.This is that the characteristics of conventional reseting leaf structure cause.

Ordinary circumstance, the combination of motor cover plate sub-unit and worm gear sub-unit are finished the running of motor and function such as reset.

As Fig. 1, shown in Figure 2, the restoring board of conventional structure is to be laid on the worm gear end face, and what promptly we said is with the structure of worm gear (working of plastics) with restoring board (metalwork) one.According to the reset motor operation principle, anodal reed is installed on the cover plate, reseting leaf, anode reed, three reeds are to be arranged in parallel on the same ray in worm gear axle center, contact with metal restoring board diverse location, to reach the purpose of control reset motor.Its shortcoming is to have short risk.

The utility model content

A kind of wiper motor with the anti-function of trembling that resets that technical problem to be solved in the utility model is to propose at existing technical problem in the above-mentioned prior art, this motor changes to the structure that restoring board and worm gear separate with the structure of worm gear and restoring board one.

Like this, when windshield wiper blade does not turn back to original stand, the critical phenomena of restoring board power on/off can not take place again, both made worm gear backward rotation under external force, the reseting disk dislocation is dallied and can not be given drive, thereby when having avoided resetting the contact head of anodal reed repeatedly short circuit cause spark, the fault at the plastics position of scorification worm gear takes place.

The technical problem that the utility model requires to solve can be achieved through the following technical solutions:

A kind of wiper motor with the anti-function of trembling that resets, comprise cover plate sub-unit, worm gear sub-unit and restoring board, in the described cover plate sub-unit anodal reed, reseting leaf and anode reed are installed, described worm gear sub-unit comprises worm-wheel shaft and the worm gear that is enclosed within on the worm-wheel shaft, it is characterized in that: described restoring board is laid on the reseting disk end face, can freely rotate and link to each other with cover plate;

Anodal reed, reseting leaf and the anode reed of installing in the described cover plate sub-unit is arranged on the 120 degree Equal rounds in worm gear axle center, contacts with the diverse location of restoring board;

Two boss are arranged on the described worm gear end face, can drive reseting disk.

Owing to adopted as above technical scheme, the utlity model has following characteristics: the rotation of motor worm gear drives the reseting disk running, make the windscreen wiper windshield wiper blade reset to the stand zone, both made in the critical zone, can not cause the motor short circuit to ablate, from presentation, windshield wiper blade has not had jitter phenomenon repeatedly yet, thereby thoroughly solved the possibility of the short circuit ablation motor that resets, manufacturability also can satisfy batch production requirements.

Description of drawings

Fig. 1 is conventional worm gear sub-unit structural representation.

Fig. 2 is conventional cover plate sub-unit structural representation.

Fig. 3 is the utility model worm gear sub-unit structural representation.

Fig. 4 is the utility model cover plate sub-unit structural representation.

Fig. 5 is the utility model reseting disk sub-unit structural representation.

Embodiment

For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.

Referring to Fig. 3, worm gear sub-unit 100 of the present utility model comprises worm-wheel shaft 110 and the worm gear 120 that is enclosed within on the worm-wheel shaft 110, and worm gear 120 rotation under worm-wheel shaft 110 drives has two boss 130 on worm gear 120 end faces.

Referring to Fig. 4, anodal reed 210, reseting leaf 220, anode reed 230 are installed in the cover plate sub-unit 200 of the present utility model, these three reeds are disposed on the 120 degree Equal rounds at worm-wheel shaft 110 centers, have solved the easy problem of short-circuit of conventional structure.

Referring to Fig. 5, reseting disk sub-unit 300 of the present utility model comprises the restoring board 320 on the reseting disk 310 and reseting disk 310 end faces that are laid in.

Restoring board 320 can freely rotate, and is connected with cover plate sub-unit 200, and three reeds on the cover plate sub-unit 200 contact with the diverse location of restoring board 320.Form electric loop.

Two boss 130 on worm gear 120 end faces can drive restoring board 320 and rotate, to reach the purpose of control reset motor.Not in place even reset, worm gear 120 counter-rotatings can not make restoring board 320 counter-rotatings yet, have reached the unlikely ablated fault of protection motor.

More than show and described basic principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; the utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims (1)

1. wiper motor with the anti-function of trembling that resets, comprise cover plate sub-unit, worm gear sub-unit and restoring board, in the described cover plate sub-unit anodal reed, reseting leaf and anode reed are installed, described worm gear sub-unit comprises worm-wheel shaft and the worm gear that is enclosed within on the worm-wheel shaft, it is characterized in that: described restoring board is laid on the reseting disk end face, can freely rotate and link to each other with cover plate;

Anodal reed, reseting leaf and the anode reed of installing in the described cover plate sub-unit is arranged on the 120 degree Equal rounds in worm gear axle center, contacts with the diverse location of restoring board;

Two boss are arranged on the described worm gear end face, can drive reseting disk.

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