Pivot assembly for windscreen wiper and windscreen wiper

Abstract

The invention relates to a pivot assembly for a windscreen wiper and the windscreen wiper. The pivot assembly comprises a windscreen wiper shaft, a crankshaft and a wrapping molding part, wherein the windscreen wiper shaft is inserted in a through hole of the crankshaft, the wrapping molding part is formed by a wrapping molding technology and provided with a combination part, the combination part is arranged between the windscreen wiper shaft and the crankshaft so as to combine the windscreen wiper shaft and the crankshaft, and the wrapping molding part is further preferably provided with a first bushing part serving as a bushing, a washer part serving as a washer and / or a water-proof part serving as a water-proof cover. Due to the adoption of the pivot assembly, not only can the structural reliability of the existing windscreen wiper be obviously improved, but also the functions of the bushing, the washer, the water-proof cover, lubricating oil storage and the like can be combined.

Description

technical field [0001] The present invention relates to a structure of a wiper, in particular to a pivot assembly for a wiper and a wiper provided with the pivot assembly. Background technique [0002] The wiper is a device usually installed on the front and rear windshields of motor vehicles such as cars, trucks, passenger cars, etc. It is of great significance to provide a good observation field of view and fully ensure driving safety. [0003] exist figure 1 shows a typical structure of a wiper, wherein the wiper shaft 1a and the crank 2a are installed together, when the driving device (such as an electric motor) in the wiper drives the crank 2a to move, the crank 2a will drive the wiper shaft 1a to pivot Rotating movement, thereby driving the wiper arm connected to the wiper shaft 1a to swing, and then the wiper blade completes the wipe operation of the glass. In the wiper, since the firm, durable and reliable connection between the wiper shaft 1a and the crank 2a is ...

AI Technical Summary

Problems solved by technology

However, the use of these assembly methods is not necessarily very reliable, because when used for a long time or subjected to a large torque, there will be loose connection, deformation, etc. between the wiper shaft and the crank, resulting in a decrease in its rigidity, which is difficult to ensure The same wiping angle at all wiping positions, so the exact angle of attack between the wiper blade and the glass cannot be ensured, resulting in poor wiping quality of the wiper, and vibration and noise, thus affecting driving safety

In addition, if Figure 2a and Figure 3a As shown, in the existing wiper structure, when assembling the wiper shaft 1a and the crank 2a, it is necessary to use accessories such as washers or gaskets 3a, which not only makes the assembly process cumbersome and difficult to control tolerances, but also increases the corresponding manufacturing. , maintenance costs and labor costs

Images