CN210363733U

CN210363733U - Automobile windscreen wiper structure

Info

Publication number: CN210363733U
Application number: CN201920698696.8U
Authority: CN
Inventors: 范磊
Original assignee: Guizhou Changjiang Automobile Co ltd
Current assignee: Guizhou Changjiang Automobile Co ltd
Priority date: 2019-05-16
Filing date: 2019-05-16
Publication date: 2020-04-21
Anticipated expiration: 2029-05-16

Abstract

The utility model discloses a vehicle wiper structure, which comprises a wiper arm, wherein the front end of the wiper arm is provided with a wiper blade, the rear end of the wiper arm is connected with a wiper driving mechanism through a rotating shaft, the wiper arm is hinged with the rotating shaft, and a main spring for providing downward pressure for the wiper arm is arranged at the hinged part and the bottom of the wiper arm; an adjusting spring which reacts to the main spring is arranged at the top of the wiper arm and opposite to the main spring. When the temperature reduces or rises, the spring rate of main spring and adjustment spring increases or reduces simultaneously, and the power of exerting force of main spring makes the water brush arm press to windshield, and the adjustment spring then plays opposite effect, offsets each other, enough controls the influence that the temperature variation received pressure to the windscreen wiper piece, and its simple structure easily installs the operation, low in manufacturing cost improves the driving travelling comfort, and the practicality is strong, and popularization nature is high.

Description

Automobile windscreen wiper structure

Technical Field

The utility model relates to a car windscreen wiper structure belongs to the automobile manufacturing technology field.

Background

A wiper, also called a wiper, a wiper blade, or a windshield wiper, is a device for wiping off raindrops and dust attached to a windshield of a vehicle, so as to improve visibility of a driver and increase driving safety.

The windshield wiper generally comprises a motor, a speed reducer, a four-bar mechanism, a wiper arm mandrel, a wiper blade assembly and the like. The left wiper blade and the right wiper blade are pressed on the outer surface of the windscreen by the wiper blade arm, the motor drives the speed reducing mechanism to rotate, the driving rod system is made to reciprocate, the wiper blade arm and the wiper blade are driven to swing left and right, and finally the windscreen is cleaned. The friction between the wiper blade and the windshield can generate certain noise, and particularly in winter, the noise is more obvious. One reason for the variation of the frictional noise is that the spring stiffness of the wiper arm becomes higher due to the decrease of the air temperature, and the thermal expansion and contraction effect causes the pressure applied by the wiper arm on the wiper blade to increase, so that the frictional force of the wiper blade on the windshield glass increases, and the noise of "squeaking" is caused.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide this car windscreen wiper structure, its mode through increasing reverse adjustment spring offsets the spring rate change that arouses because of the temperature variation, can overcome the not enough of prior art.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme: a kind of car wiper structure, including the wiper arm of the wiper, the wiper blade is set up in the front end of the wiper arm of the wiper, the rear end is connected with wiper driving mechanism through the rotating shaft, the wiper arm of the said wiper is connected with rotating shaft articularly, there are main springs for providing the downward pressure for wiper arm of the wiper at the articularly connected position, wiper arm bottom of the wiper; an adjusting spring which reacts to the main spring is arranged at the top of the wiper arm and opposite to the main spring.

The adjusting spring is fixedly connected between the first mounting seat and the second mounting seat, and a dust cover convenient to disassemble and assemble is arranged outside the adjusting spring.

The first mounting seat and the second mounting seat are of triangular structures, and the dust cover is of an arc structure in smooth transition with the first mounting seat and the second mounting seat.

Compared with the prior art, the utility model discloses a car windscreen wiper structure, it improves current car windscreen wiper structure, scrapes the articulated position of arm and rotation axis at mutual articulated wiper and has set up a pair of spring that plays reverse action power, scrapes the arm bottom promptly and is equipped with for the wiper scrape the arm provide down the main spring of holding down the pressure, scrape the arm top at the wiper and be equipped with the adjustment spring for main spring counteraction. The main spring provides a downward pressure for the wiper arm of the windscreen wiper through contraction, so that a wiper blade at the front end of the main spring can be attached to the windscreen; the adjusting spring is arranged at the top of the wiper arm of the windscreen wiper, force opposite to the main spring is provided through contraction, parameters such as wire diameter, screw pitch, number of turns, length and angle of the main spring and the adjusting spring are adjusted through calculation, finally, the combined force of the main spring and the adjusting spring can install the wiper blade on the windscreen with proper pressure, when the temperature is reduced, the spring stiffness of the main spring and the spring stiffness of the adjusting spring are increased at the same time, the force applied by the main spring enables the wiper arm to press the windscreen, and the adjusting spring plays opposite roles and counteracts each other; when the temperature rises, the influence of the temperature change on the pressure of the wiper blade can be controlled by the same principle.

The utility model discloses simple structure, easily installation operation, low in manufacturing cost is honest and clean, thinks about ingeniously, enough control temperature changes receive the influence of pressure to the windscreen wiper piece, improves the driving travelling comfort, and the practicality is strong, and popularization nature is high.

Drawings

Fig. 1 is a schematic structural diagram of the present invention (embodiment one).

Fig. 2 is a schematic structural diagram of the present invention (embodiment two).

Detailed Description

The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention:

as shown in fig. 1 and 2, an automobile wiper structure includes a wiper arm 1, a wiper blade is disposed at a front end of the wiper arm 1, a rear end of the wiper arm is connected to a wiper driving mechanism through a rotating shaft 2, the wiper arm 1 is hinged to the rotating shaft 2, and a main spring 3 for providing a downward pressure to the wiper arm 1 is disposed at a hinged portion and at a bottom of the wiper arm 1; an adjusting spring 4 is provided on the top of the wiper arm 1 at a position opposite to the main spring 3 and reacts to the main spring 3.

A first mounting seat 101 and a second mounting seat 201 which are opposite to each other are arranged at the hinged position of the top of the wiper arm 1 and the rotating shaft 2, and the adjusting spring 4 is fixedly connected between the first mounting seat 101 and the second mounting seat 201; and a dust cover 5 which is convenient to assemble and disassemble is arranged outside the adjusting spring 4.

First mount pad 101 and second mount pad 201 are the triangle-shaped structure, dust cover 5 is first mount pad 101 and second mount pad 201 smooth transition's arc structure, and intensity is good after the three splices, and is handsome in appearance.

Claims

1. The utility model provides an automobile windscreen wiper structure, scrapes arm (1) including the wiper, and wiper scrapes arm (1) front end and is equipped with the wiper blade, and the rear end passes through rotation axis (2) to be connected its characterized in that with wiper actuating mechanism: the wiper arm (1) of the windscreen wiper is hinged with the rotating shaft (2), and a main spring (3) for providing downward pressure for the wiper arm (1) of the windscreen wiper is arranged at the hinged part and at the bottom of the wiper arm (1); an adjusting spring (4) which reacts to the main spring (3) is arranged at the top of the wiper arm (1) and opposite to the main spring (3).

2. The automotive wiper structure according to claim 1, characterized in that: scraping arm (1) and rotation axis (2) top articulated department at the wiper and being equipped with relative first mount pad (101) and second mount pad (201), adjustment spring (4) link firmly between first mount pad (101) and second mount pad (201) to adjustment spring (4) are equipped with dust cover (5) that make things convenient for the dismouting outward.

3. The automotive wiper structure according to claim 2, characterized in that: the first installation seat (101) and the second installation seat (201) are of triangular structures, and the dust cover (5) is of an arc structure in smooth transition with the first installation seat (101) and the second installation seat (201).