CN2488768Y

CN2488768Y - Overlapping wipping-opposite type windscreen wiper for car

Info

Publication number: CN2488768Y
Application number: CN 01242802
Authority: CN
Inventors: 魏基洋
Original assignee: DONGXING BUS FITTING Co Ltd JINYUAN DISTRICT SHANTOU CITY
Current assignee: Guangdong Dongxing Passenger Car Fittings Co., Ltd.
Priority date: 2001-07-20
Filing date: 2001-07-20
Publication date: 2002-05-01
Anticipated expiration: 2011-07-20

Abstract

The utility model relates to an overlapping wipping-opposite type windscreen wiper for car, comprising two wiper blades, a main rocking arm, an accessory rocking arm, a crank, a main tie rod, an accessory tie rod, an auxiliary rocking arm and a motor which drives the crankshaft to rotate. The utility model is mainly characterized in that the windscreen wiper is also provided with a rigid bracket; the motor is fixed on the rigid bracket; the rigid bracket is also provided with a round hole; and the rotating shaft of the auxiliary rocking arm is tightly sleeved in the round hole. As the geometry shape of the rigid bracket can be divided into a plurality of planes with regular shape, the coordinate distance of two points can be easily got on the surface of the rigid bracket, thereby accurately positioning the rotating shaft of the motor and the rotating shaft of the auxiliary rocking arm on the rigid bracket, and making the moving track of the two windscreen wipers accurate to avoid colliding and chucking with each other.

Description

A kind of overlapping wipping-opposite type vehicle glass Windshield Wiper

Technical field

The utility model belongs to a kind of windshield Windshield Wiper, is specifically related to a kind of overlapping wipping-opposite type vehicle glass Windshield Wiper.

Background technology

Overlapping wipping-opposite type vehicle glass Windshield Wiper is rotated by a motor-driven crank, transmission by two pairs of crank rocker kinematic pairs and a pair of double rocking lever kinematic pair, driving two scraping blades returns to swing repeatedly, they are swept to both sides by the centre of Windshield simultaneously scrape, and then draw close by in the middle of two side direction simultaneously.Have one the two overlapping zone of scraping of sweeping of scraping blade at the glass midway location, two scraping blades lean on very closely after entering this zone, and their distances have only about 2cm the most in short-term, therefore require the path of motion of two scraping blades accurate, otherwise will run foul of each other even tighten.In above-mentioned transmission device, whether the mutual alignment between each rotating shaft particularly mutual alignment between machine shaft and the power-assist rocker shaft is accurate, and the accuracy of two scraping blade path of motions is played decisive role.

Existing overlapping wipping-opposite type vehicle glass Windshield Wiper is when completing but also not being installed to the compartment antetheca as yet, the mutual alignment relation of each rotating shaft is unfixing as yet, after being installed to the compartment antetheca, each rotating shaft closely is enclosed within on the compartment antetheca in the corresponding axis hole, makes the mutual alignment relation between each rotating shaft fixing thus.Yet, the compartment antetheca is one and protrudes forward and curved surface in irregular shape, be difficult to accurately measure the coordinate distance of point-to-point transmission at its outside face, error often appears when therefore each axis hole being positioned, the corresponding error that also exists of mutual alignment relation after each rotating shaft installation, these errors also can be amplified in transmission process, be accumulated, and cause the path of motion of two scraping blades to occur than large deviation, overlapping sweep to scrape in the zone run foul of each other, tighten, also can make the motor stall when serious, burn.

Summary of the invention

The purpose of this utility model is that a kind of overlapping wipping-opposite type vehicle glass Windshield Wiper will be provided, and it can guarantee that the position relation of each rotating shaft of transmission device is accurate, makes two scraping blade path of motions more correct.

Its purpose can realize by following scheme: this overlapping wipping-opposite type vehicle glass Windshield Wiper comprises two scraping blades, master rocker, secondary-rocker, crank, and the motor that drives the crank rotation, between crank and master rocker main tie is arranged, the three constitutes the crank rocker kinematic pair; Power-assist pull bar, power-assist rocking arm and subtie are arranged between crank and secondary-rocker, wherein crank, power-assist pull bar and power-assist rocking arm constitute the crank rocker kinematic pair, power-assist rocking arm, subtie and secondary-rocker constitute the double rocking lever kinematic pair, its principal feature is, this Windshield Wiper also has a rigid support, described motor is fixed on the rigid support, also has a circular hole on the rigid support, and the rotating shaft of described power-assist rocking arm closely is enclosed within this circular hole.Like this, just can the relation of the mutual alignment between machine shaft and the power-assist rocker shaft be fixed up exactly by rigid support.

Scheme is preferably for achieving the above object: described rigid support is made of a cross bar and two risers, and two risers are captiveed joint with cross bar respectively, and described motor fixedly mounts therein on a slice riser, and described circular hole is positioned on another sheet riser.

Better scheme is for achieving the above object: the length of described rigid support cross bar is greater than the mounting distance between master rocker rotating shaft and the secondary-rocker rotating shaft, also have two circular holes at the cross bar two ends, described master rocker rotating shaft and secondary-rocker rotating shaft closely are enclosed within respectively in these two circular holes.Like this, just can the relation of the mutual alignment between machine shaft, master rocker rotating shaft, power-assist rocker shaft and the secondary-rocker rotating shaft accurately be fixed up by rigid support.

The utlity model has following advantage and effect:

1, because the geometric configuration of rigid support can be decomposed into the plane of several shape comparison rule, on its surface, accurately measure the coordinate distance of point-to-point transmission easily, therefore can on rigid support, position exactly machine shaft and power-assist rocker shaft, make the path of motion of two scraping blades accurate, can avoid running foul of each other, tightening.

2, rigid support can also be further exactly with the stationkeeping of master rocker rotating shaft and secondary-rocker rotating shaft, make the mutual alignment relation between master rocker rotating shaft, machine shaft, power-assist rocker shaft, the secondary-rocker rotating shaft accurate, further make the path of motion of two scraping blades more accurate.

Description of drawings

Fig. 1 is a kind of concrete enforcement structural representation of the utility model.

Fig. 2 is a Windshield Wiper transmission device scheme drawing shown in Figure 1.

Fig. 3 is the schematic top plan view of transmission device shown in Figure 2.

Fig. 4 is a rigid support shape and structure scheme drawing among Fig. 2.

Fig. 5 is the another kind of concrete structural representation of implementing of the utility model.

Fig. 6 is the schematic top plan view of transmission device shown in Figure 5.

Fig. 7 is a rigid support shape and structure scheme drawing among Fig. 5.

The specific embodiment

Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, this overlapping wipping-opposite type vehicle glass Windshield Wiper comprises two scraping blades 12, and corresponding two scraping arms 11, and wherein a scraping arm can drive lower swing at master rocker 2, and both have common rotating shaft 21; Another root scraping arm can drive lower swing at secondary-rocker 8, and both have common rotating shaft 81.Crank 3 can rotate under motor 5 drives; Between crank 3 and master rocker 2 main tie 1 is arranged, the three constitutes the crank rocker kinematic pair; Power-assist pull bar 6, power-assist rocking arm 7 and subtie 9 are arranged between crank 3 and secondary-rocker 8, and wherein crank 3, power-assist pull bar 6, power-assist rocking arm 7 constitute the crank rocker kinematic pair, and power-assist rocking arm 7, subtie 9 and secondary-rocker 8 constitute the double rocking lever kinematic pair.Also has a rigid support 4 at this Windshield Wiper, this rigid support is made of a cross bar 41 and two

risers

42,43, two

risers

42,43 are captiveed joint with cross bar 41 respectively, wherein a slice riser 42 has several small sircle holes that distributes ringwise 421, motor 5 can utilize the bolt (not shown) that cooperates with small sircle hole 421 closely to be fixed on this riser 42, this riser 42 also has hollow hole 422, and machine shaft passes this hollow hole 422 and is connected with crank 3; Have bearing hole 432 on another sheet riser 43, the bearing (not shown) of power-assist rocker shaft 71 closely is enclosed within this bearing hole 432, and the power-assist rocker shaft 71 and the mutual alignment relation of machine shaft are fixed by rigid support.

In Fig. 5, Fig. 6, second kind of embodiment shown in Figure 7, rigid support 4 is formed by fixedly connecting by cross bar 41 and two

risers

42,43 equally, and the position of motor 5 and power-assist rocker shaft 71 is separately fixed on two risers.The length of cross bar 41 is greater than the mounting distance between master rocker rotating shaft and the secondary-rocker rotating shaft, have two circular holes 411,412 at cross bar 41 two ends, the bearing (not shown) of master rocker rotating shaft 21 and secondary-rocker rotating shaft 81 closely is enclosed within respectively in two circular holes 411,412, thereby the mutual alignment relation between machine shaft, master rocker rotating shaft, power-assist rocker shaft and the secondary-rocker rotating shaft is fixed up exactly by rigid support.

When the Windshield Wiper with above-mentioned embodiment was installed to the compartment antetheca, as long as rigid support is fixedly installed on the compartment antetheca, the stationkeeping that just can make machine shaft and power-assist rocker shaft was on the compartment antetheca.In the second way, the stationkeeping that can also make master rocker rotating shaft and secondary-rocker rotating shaft thus is on the compartment antetheca.

Claims

1, a kind of overlapping wipping-opposite type vehicle glass Windshield Wiper comprises two scraping blades, master rocker, secondary-rocker, crank, and drives the motor that crank rotates, and between crank and master rocker main tie is arranged, and the three constitutes the crank rocker kinematic pair; Power-assist pull bar, power-assist rocking arm and subtie are arranged between crank and secondary-rocker, wherein crank, power-assist pull bar and power-assist rocking arm constitute the crank rocker kinematic pair, power-assist rocking arm, subtie and secondary-rocker constitute the double rocking lever kinematic pair, it is characterized in that: this Windshield Wiper also has a rigid support, described motor is fixed on the rigid support, also have a circular hole on the rigid support, the balance staff of described power-assist rocking arm closely is enclosed within this circular hole.

2, overlapping wipping-opposite type vehicle glass Windshield Wiper according to claim 1, it is characterized in that: described rigid support is made of a cross bar and two risers, two risers are captiveed joint with cross bar respectively, described motor fixedly mounts therein on a slice riser, and described circular hole is positioned on another sheet riser.

3, overlapping wipping-opposite type vehicle glass Windshield Wiper according to claim 2, it is characterized in that: the length of described rigid support cross bar is greater than the mounting distance between master rocker balance staff and the secondary-rocker balance staff, also have two circular holes at the cross bar two ends, the balance staff of described master rocker balance staff and secondary-rocker closely is enclosed within respectively in these two circular holes.