CN2763140Y

CN2763140Y - Windshield wiper arm with function of avoiding forming dead-point

Info

Publication number: CN2763140Y
Application number: CN 200520079837
Authority: CN
Inventors: 侯传胜; 李发有
Original assignee: China National Heavy Duty Truck Group Co Ltd
Current assignee: China National Heavy Duty Truck Group Co Ltd
Priority date: 2005-01-06
Filing date: 2005-01-06
Publication date: 2006-03-08
Anticipated expiration: 2015-01-06

Abstract

The utility model discloses a screenwiper swinging arm which can avoid forming dead points. The screenwiper swinging arm is a plate material which is provided with three connecting holes that form triangular distribution. The screenwiper swinging arm has key technology that a triangular connecting plate is adopted to be used as the swinging arm. The connection point of a driving arm and the swinging arm and the connection point of the swinging arm and other connecting rods are separated. A screenwiper can be guaranteed that dead points are not formed in the process of working. Thus, assembly and adjustment are simplified, the stress status of a motor is improved and the service life of the motor is prolonged. The length of the driving arm can be free from adjustment simultaneously, and the structure of the driving arm is simplified.

Description

Can avoid forming the Windshield Wiper swing arm at dead point

(1) technical field

The utility model relates to a kind of automobile Front Windshield Windshield Wiper annex, particularly a kind of Windshield Wiper swing arm of avoiding forming the dead point.

(2) background technology

Automobile is furnished with Windshield Wiper, when raining, uses Windshield Wiper constantly to remove the rainwater of windshield, to guarantee chaufeur unobstructed sight is arranged.Windshield Wiper generally is made up of motor, swivel arm, transmission arm, connecting rod, swing arm, arm shaft and windscreen wiper arm etc.During work, the rotation of driven by motor swivel arm, transmission arm one end is connected with swivel arm makes circular movement, the other end is connected with swing arm does reciprocally swinging, be connected with other swing arm with connecting rod simultaneously, swing by the arm shaft drive windscreen wiper arm that is fixed on the body shell cab body, constantly wipe the rainwater on the windshield off.

Must carefully adjust angle between transmission arm and the swing arm by regulating methods such as transmission arm length during assembling, it is inhomogeneous that angle is scraped water area too greatly, has the blind area to influence the visual field; Angle is too little, and the position of windscreen wiper arm return is unfixing.When raining, because friction force is little, the inertia of windscreen wiper arm is very big, and the point of connection that can adjust transmission arm and swing arm is on the straight line, forms dead point even counter-rotating, thereby causes the motor resistance big or stuck easily, damages motor.Adjust shortcomings such as difficulty is big so there is assembling.

(3) summary of the invention

The technical matters that will solve of the present utility model is: a kind of assembling adjustment rational in infrastructure, easy is provided, can avoids forming the Windshield Wiper swing arm at dead point.

In order to solve the problems of the technologies described above, the utility model is the sheet material with connecting bore of three distributions triangular in shape.

Described sheet material is a triangle sheet material, and described connecting bore is distributed in its three tops.

Described sheet material is V shaped slab, and described connecting bore is distributed in its three ends.

The utility model can separate transmission arm with swing arm with the point of connection of swing arm with the point of connection of other connecting rod, can guarantee that Windshield Wiper does not form the dead point in operational process, thereby simplifies assembling and adjustment, improves the force-bearing situation of motor, prolongs the service life of motor.Transmission arm length can be adjusted simultaneously, has simplified the structure of transmission arm.

(4) description of drawings

Fig. 1 is the structural representation of a kind of specific embodiment of the present utility model;

Fig. 2 is the structural representation of another kind of specific embodiment of the present utility model;

Fig. 3 is the running condition scheme drawing of specific embodiment shown in Figure 1;

Wherein: 1, windshield, 2, scraping blade, 3, the windscreen wiper arm, 4, arm shaft, 5, the straight-bar swing arm, 6, connecting rod I, 7, transmission arm, 8, swivel arm, 9, connecting rod II; Arrow is depicted as the motor hand of rotation.

(5) specific embodiment

Be a kind of specific design example as shown in Figure 1, its main body is a triangle sheet material, and three connecting bore B, C, D are arranged on sheet material, is distributed in respectively on three angles of plate.This specific design example running condition links to each other with transmission arm 7 by hole B as shown in Figure 3, links to each other with connecting rod II9 with connecting rod I6 by hole D, links to each other with arm shaft 4 and windscreen wiper arm 3 on being fixed on body shell cab body by hole C; Other end at connecting rod I6 and connecting rod II9 respectively is connected a straight-bar swing arm 5, straight-bar swing arm 5 tops all are connected with windscreen wiper arm 3 by the arm shaft 4 that is fixed on the body shell cab body, the scraping blade 2 of windscreen wiper arm 3 is attached on the windshield 1, and aforesaid transmission arm 7 is connected on the swivel arm 8.During use, 8 rotations of driven by motor swivel arm also drive transmission arm 7 crank motions, transmission arm 7 promotes the utility model reciprocally swinging and drives windscreen wiper arm 3 to swing, drive straight-bar swing arm 5 and coupled windscreen wiper arm 3 motions by connecting rod I6 and connecting rod II9 simultaneously, thereby scraping blade 2 is swung on windshield 1, constantly wipe the rainwater on windshield 1 surface off.

Fig. 2 is an another kind of specific embodiment of the present utility model, and its using method and function are identical with specific embodiment shown in Figure 1.

Claims

1, a kind of rain brush swing arm of avoiding forming the dead point is characterized in that: be the sheet material with connecting bore of three distributions triangular in shape.

2, the rain brush swing arm of avoiding forming the dead point according to claim 1 is characterized in that: described sheet material is a triangle sheet material, and described connecting bore is distributed in its three tops.

3, the rain brush swing arm of avoiding forming the dead point according to claim 1, it is characterized in that: described sheet material is V shaped slab, described connecting bore is distributed in its three ends.