CN2142419Y

CN2142419Y - Vehicle windscreen wiper with wiper rod automatic adjusting

Info

Publication number: CN2142419Y
Application number: CN 92233277
Authority: CN
Inventors: 何耀华; 陈国防
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-09-25
Filing date: 1992-09-25
Publication date: 1993-09-22
Anticipated expiration: 2002-09-25

Abstract

The utility model relates to a vehicle windscreen wiper with wiper arm automatic adjusted which is improved from the traditional single arm windscreen wiper. On the basis of the single arm windscreen wiper, a sliding bar 11, a rocker 4, a cam 6, pulling wire 9, a swing wheel 7, a rack 5 and a sliding block 15 are added, wherein, the swing wheel 7, the rack 5 and the sliding block 15 are arranged in the rocker 4. The length of the wiper arm of the utility model can be adjusted according to the shape of the cam 6 in regular in the process of wiping and brushing, which increases the area of wiping and brushing, and the advantage of high-speed adaptability of the traditional single-arm wiper is reserved at the same time.

Description

Vehicle windscreen wiper with wiper rod automatic adjusting

The utility model relates to the vehicle window cleaner, and particularly a kind of rainwater on the scraping vehicle front windshield glass outside face, frost and snow etc. of being used for hinder the scraping arm automatically regulating formula vehicle window cleaner of driver's seat material.

Because the quality of vehicle front visbility directly has influence on the driving safety of vehicle, for this reason, regulation among China GB GB11556-89 " car window cleaner wiper area ", the A district must not be less than 98%, Fig. 1 (fix in the GB really and make explicit provisions about A, B zone) must not see less than 80% in the B district.So the wiper zone of Windshield Wiper should be big as far as possible, if can all wiper is to ideal with the whole wind wind glass, but in fact, this structurally be difficult to realize.In order to obtain certain brushing effects of scraping, traditional way is the quantity (as adopting two scraping arms or three scraping arms) that increases Wiper blade.Can increase the wiper zone like this, see Fig. 2.Along with the raising of the speed of a motor vehicle, the defective that these many scraping arms Windshield Wipers have brought some to be difficult to overcome: the visual fatigue that 1, causes chaufeur easily.The frequency that scraping arm swings back and forth before the chaufeur forms doubly increase with the increase of scraping blade quantity.2, in emergency circumstances, may influence driver vision at some.Integrate the high speed bad adaptability of many scraping arms Windshield Wiper.Though the high speed comformability of single scraping arm Windshield Wiper is relatively good, its wiper zone is smaller, sees Fig. 3, is difficult to satisfy the requirement of GB.

The purpose of this utility model is in order to overcome the little deficiency in above-mentioned single scraping arm Windshield Wiper wiper zone, to give full play to the adaptive advantage of the good high speed of single scraping arm Windshield Wiper, and propose a scraping arm automatically regulating formula vehicle window cleaner.

The utility model is the improvement to traditional single armed Windshield Wiper.It comprises motor 1, scraping blade 2, scraping arm 3, rocking bar 4 and scrape arm axle 12 with scraping arm 3 and rocking bar 4 connect firmly, and piston crank mechanism 13, wherein, motor 1 is scraped arm axle 12 by piston crank mechanism 13 drives and is back and forth rotated, on scraping arm 3, be equipped with one can be thereon slide bar 11 in axial sliding, a spring 10 that is fixed on the scraping arm 3 with an end of slide bar 11 links, other end and scraping blade 2 link, in rocking bar 4, escapement 7 and gear 8 are housed by axle 16, escapement 7 and gear 8 are coaxial and connect firmly, they can be around the axis rotation of self in rocking bar 4, and gear 8 and tooth bar 5 engagements are fixedly connected with slide block 15 on the tooth bar 5, slide block 15 is arranged in the chute 14 on the escapement 7, can slide, slide block 15 can contact with a fixing cam 6, and a backguy 9 is arranged, its end with slide bar 11 links, the outer garden Zhou Xianglian of other end and escapement 7.

Principle of work of the present utility model is such, the gyroscopic movement of motor 1 converts the reciprocally swinging of scraping arm 3 and rocking bar 4 to by piston crank mechanism, scraping arm 3 drives scraping blade 2 by slide bar 11 and realizes its wiper function, slide block 15 on the rocking bar 4 and cam 6 link to each other with higher pair, in the swing process of rocking bar 4, the rise rule of cam 6 is passed to escapement 7 by the tooth bar on the slide block 15 5 with the gear 8 that escapement 7 connects firmly, make escapement 7 rotations, escapement 7 is strained backguy 9 by rotation in the process of rocking bar 4 reciprocally swingings or is loosened, slide bar 11 drives the axial automatically regulating position of scraping blade 2 at scraping arm 3 under the effect of backguy 9, in the process of backguy 9 rolled-up tensions, spring 10 is compressed, and drive slide bar 11 and move to the direction of scraping arm axle 12, the contraction in length of scraping arm, in backguy 9 by in the processes of loosening, under the effect of spring 10, slide bar 11 moves to the direction that deviates from scraping arm axle 12, and the length of scraping arm increases, and has so just realized scraping the automatically regulating of arm lengths.

Because the length of the utility model its scraping arm in the wiper process can be done clocklike to regulate according to the shape of cam 6, so its wiper zone is bigger than the wiper zone of traditional Windshield Wiper, see Fig. 4, satisfy the requirement of GB fully, it has also kept the good advantage of traditional single armed Windshield Wiper high speed comformability simultaneously.Just because of this, the utility model can replace traditional Windshield Wiper fully.

Specify embodiment of the present utility model below in conjunction with accompanying drawing.

Fig. 1 is a regulation vehicle Front Windshield regional distribution chart in the GB.

Fig. 2 is two scraping arm Windshield Wiper wiper area maps.

Fig. 3 is single scraping arm Windshield Wiper wiper area map.

Fig. 4 is the utility model wiper area map.

Fig. 5 is a structural representation of the present utility model.

Fig. 6 is an A-A cutaway view among Fig. 5.

In Fig. 5 and Fig. 6, scraping arm 3 is garden pipes, and in the hole that slide bar 11 inserts in the scraping arm 3, an end of spring 10 and the end of slide bar 11 link, and the other end of spring 10 is arranged on the step of scraping arm 3 endoporus.What piston crank mechanism 13 adopted is the mode of crank cross link mechanism, and it is identical with the piston crank mechanism of traditional single scraping arm Windshield Wiper.Escapement 7 all connects firmly on axle 16 with gear 8, and two of axle 16 links by two back plates in bearing and the rocking bar 4.Tooth bar 5 and slide block 15 are one, at the another side of slide block 15 roller are housed, and roller 16 contacts with the profile of cam 6.What scrape arm axle 12 a through hole arranged axially, backguy 9 is passed this hole and slide bar 11 and escapement 7 and is linked, and backguy 9 is adopted is brake brake cable in the similar bicycle.Spring 10 will be positioned at roller 16 on the slide block 15 by backguy 9 centre parts such as grade and be close to contour surface at cam 6 all the time.The profilograph of cam 6 can design according to the track in scraping blade 2 wiper zones.

Claims

1, a kind of scraping arm automatically regulating formula vehicle window cleaner, comprise motor 1, scraping blade 2, scraping arm 3 and scrape arm axle 12 with scraping arm 3 connects firmly, and piston crank mechanism 13, motor is by piston crank mechanism 13, drive is scraped arm axle 12 and is back and forth rotated, it is characterized in that: on scraping arm 3, be equipped with one can be thereon slide bar 11 in axial sliding, one of slide bar 11 links with the spring 10 that is fixed on the scraping arm 3, other end and scraping blade 2 link, a rocking bar 4 is arranged and scrape arm axle 12 and connect firmly, in rocking bar 4, escapement 7 and gear 8 are housed by axle 16, escapement 7 and gear 8 are coaxial and connect firmly, they can rotation in rocking bar 4, gear 8 and tooth bar 5 engagements are fixedly connected with slide block 15 on the tooth bar 5, slide block 15 is arranged in the chute 14 on the escapement 7, slide block 15 can contact with a fixing cam 6, a backguy 9 is arranged, and its end with slide bar 11 links, the garden Zhou Xianglian of other end and escapement 7.

2, according to the described scraping arm automatically regulating of claim 1 formula vehicle window cleaner, it is characterized in that: what scrape arm axle 12 a through hole arranged axially, pass this through hole with the backguy 9 that slide bar 11 and escapement 7 link, what backguy 9 was adopted is brake cable.