KR20030041309A - Wiper structure of a car - Google Patents

Abstract

PURPOSE: Wiper structure of a vehicle is provided to minimize impact by making deformation easily occurred when impact is given. CONSTITUTION: Wiper structure of a vehicle comprises a vehicle body panel installed to the lower part of a front glass of the vehicle; a hollow housing(8) connected to the vehicle body by bolts and nuts; a pivot shaft(10) connected to the housing; and a wiper arm connected to the upper end of the pivot shaft. The pivot shaft is extended from the upper end of the housing, and a vent hole is formed in the pivot shaft contacting with the upper end of the housing. A plain washer(22) with plural uneven parts is connected to the outside of the vent hole, and a fixed ring(20) is connected to the upper part of the plain washer. When passenger's head collides with the pivot shaft and the wiper arm, the pivot shaft is moved downward, passing through the housing and thus, impact is considerably absorbed.

Description

Wiper structure of a car}

The present invention relates to a wiper structure of a motor vehicle, and more particularly, to a wiper structure of a motor vehicle, which can easily minimize deformation when a certain impact is applied.

FIG. 1A is a partial cross-sectional view illustrating a wiper structure of a conventional vehicle, FIG. 1B is a partially enlarged cross-sectional view of FIG. 1A, and FIG. 1C is a perspective view illustrating a flat washer.

As shown, a substantially plate-shaped body panel 2 'is formed, and the hollow housing 8' is fastened by two bolts 6 'and a nut 4' to the body panel 2 '. It is. Two bushes 26 'are coupled to the upper and lower portions of the housing 8', and a pivot shaft 10 'is fitted from the lower portion to the upper portion of the bush 26'. The pivot shaft 10 'is provided with a wiper arm 12' at the upper end thereof to be fastened with a nut 16 'so as not to be separated. In addition, a fixing ring 20 'and a flat washer 22' are coupled to the pivot shaft 10 'in order to prevent the pivot shaft 10' from escaping downward. As shown, the fixing ring 20 'and the flat washer 22' are coupled to the pivot shaft 10 'which is a boundary area between the wiper arm 12' and the housing 8 '. In addition, the flat washer 22 'is a circular plate-like hole 22a' is formed in the center as shown in Figure 1c. In FIG. 1C, the hatched portion shows a portion where the flat washer 22 'and the fixing ring 20' come into contact with each other.

In FIG. 1A, reference numeral 14 ′ is a wiper cap, and 18 ′ is a lever 18 ′ that transmits rotational force to the pivot shaft 10 ′ to rotate the wiper arm 12 ′.

On the other hand, during the collision of the pedestrian and the front of the vehicle, the head of the pedestrian is mainly injured by collision with the bonnet and the pivot shaft 10 'of the wiper. Since the bonnet has some elasticity in the upper and lower portions, the impact on the head of the pedestrian is alleviated, but the pivot shaft 10 'of the wiper is protruded upwards to the body panel 2'. Because it is tightly coupled, it does not alleviate the impact at all, but rather has the disadvantage of increasing the injury to the head of the pedestrian.

That is, when shear stress acts on the flat washer 22 'sandwiched between the housing 8' and the fixed ring 20 ', the pivot shaft 10' is directed downward unless the flat washer 22 'is sheared. It is not deformed and therefore the impact amount is large. In addition, since the action point of the up and down stress during impact acts on the same line, the deformation is more difficult, and there is no disadvantage that there is no space for the flat washer 22 'to be deformed downward.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, to provide a wiper structure of a vehicle that can easily be deformed when the impact is applied to minimize the amount of impact.

1A is a partial cross-sectional view showing a wiper structure of a conventional vehicle;

1B is a partially enlarged cross-sectional view of FIG. 1A;

1C is a perspective view showing a flat washer;

Fig. 2A is a partial sectional view showing a state before deformation as a wiper structure of an automobile according to the present invention;

FIG. 2B is a partially enlarged sectional view of FIG. 2A;

Figure 2c is a perspective view showing a flat washer before deformation;

3A is a partial sectional view showing a state after deformation as a wiper structure of a motor vehicle according to the present invention;

3B is a partially enlarged cross-sectional view of FIG. 3A;

Fig. 3C is a perspective view showing the flat washer after deformation.

-Description of the main symbols in the drawings-

2; Body panel 4; Nut

6; Bolt8; Housing

10; Pivot shaft 12; Wiper arm

14; Cap 16; nut

18; A lever 20; Retaining ring

22; Flat washer 22a; Through

22b; Uneven portion 24; Seal ring

26; Bush

In order to achieve the above object, the present invention provides a vehicle body panel installed under the front glass of a vehicle, a hollow housing coupled with bolts and nuts to the vehicle body panel, a pivot shaft coupled to the housing, and an upper end of the pivot shaft. In the wiper structure of a vehicle consisting of a wiper arm coupled to the, the pivot shaft extends a certain length from the upper end of the housing, the through hole is formed in the pivot shaft in contact with the upper end of the housing and a plurality of uneven parts outside the through hole The formed flat washer is coupled, characterized in that the fixing ring is coupled to the upper portion of the flat washer.

Here, the upper end of the housing is further formed with a diameter of a wider diameter than the diameter of the pivot shaft so that the space for the uneven portion of the flat washer to be bent downward.

According to the wiper structure of the automobile according to the present invention as described above, when the pedestrian head portion collides with the pivot shaft, the wiper arm, etc., the pivot shaft moves downward through the housing, thereby significantly reducing the amount of impact. Will be. In addition, since the flat washer coupled to the top of the housing can be easily bent downwards, the pivot shaft is more easily moved downward along the housing during a collision.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings such that those skilled in the art can easily implement the present invention.

Fig. 2A is a partial sectional view showing a state before deformation as a wiper structure of a vehicle according to the present invention, Fig. 2B is a partially enlarged sectional view of Fig. 2A, and Fig. 2 is a perspective view showing a flat washer before deformation.

First, a vehicle body panel 2 is installed under the front glass (not shown) of the vehicle, and the hollow housing 8 is coupled to the vehicle body panel 2 by bolts 6 and nuts 4. . A pivot shaft 10 is coupled to the housing 8, a wiper arm 12 is coupled to an upper end of the pivot shaft 10, and a lever 18 is coupled to a lower end thereof. . In the figure, reference numeral 14 is a cap.

On the other hand, the pivot shaft 10 is further extended by a predetermined length from the upper end of the housing 8, the pivot shaft 10 in contact with the upper end of the housing 8, as shown in Figure 2b The flat washer 22 in which 22b) was formed is engaged. That is, the flat washer 22 has a through hole 22a formed at the center thereof so as to be coupled to the pivot shaft 10, and a plurality of uneven parts 22b are formed at the outer circumference of the through hole 22a. . In addition, a fixing ring 20 is coupled to the upper portion of the flat washer 22. The hatched portion of the flat washer 22 of Figure 2c shows the area in contact with the fixing ring 20.

In addition, the upper end of the housing 8 has a space 23 of a diameter larger than the diameter of the pivot shaft 10 so that the uneven portion 22b of the flat washer 22 can be easily bent downward. It is formed more.

The lower portion of the space 23 is a sealing 24 for preventing the inflow of moisture, etc. is coupled to the pivot shaft 10, the lower portion of the sealing 24 for reducing the friction force of the pivot shaft 10 The bush 26 is provided.

Fig. 3A is a partial sectional view showing a state after deformation as a wiper structure of an automobile according to the present invention, Fig. 3B is a partially enlarged sectional view of Fig. 3A, and Fig. 3C is a perspective view showing a flat washer after deformation.

As shown, when the head of the pedestrian collides with the wiper arm 12 or the pivot shaft 10, the pivot shaft 10 moves downward along the housing 8. That is, as the wiper arm 12 pushes the pivot shaft 10 downward, the pivot shaft 10 is moved downward along the inner side of the housing 8.

On the other hand, the flat washer 22 coupled to the pivot shaft 10, as shown in Figs. 3b and 3c is bent portion 22b is bent downward. At this time, a space portion (not shown) is formed at the upper end of the housing 8, so that the bent convex portion 22b is positioned inside the space portion.

Therefore, when the head of the pedestrian collides with the wiper arm and the pivot shaft, the pivot shaft is moved downward to minimize the injury to the head of the pedestrian.

As described above, although the present invention has been described with reference to the above embodiments, the present invention is not limited thereto, and various modified embodiments may be possible without departing from the scope and spirit of the present invention.

Therefore, according to the wiper structure of the automobile according to the present invention, when the pedestrian head portion collides with the pivot shaft, the wiper arm, etc., the pivot shaft moves downward through the housing, so that the impact amount can be considerably relaxed. There is.

In addition, since the flat washer coupled to the upper end of the housing can be easily bent into the lower space portion, there is an effect that the pivot shaft is more easily moved downward along the housing during collision.

Claims (2)

A car wiper consisting of a vehicle body panel installed under the front glass of the vehicle, a hollow housing coupled with bolts and nuts to the vehicle body panel, a pivot shaft coupled to the housing, and a wiper arm coupled to an upper end of the pivot shaft. In structure, The pivot shaft extends a predetermined length from the upper end of the housing, a through hole is formed in the pivot shaft in contact with the upper end of the housing, and a plurality of flat washers having a plurality of uneven parts are coupled to the outside of the through hole. The wiper structure of a vehicle, characterized in that the fixing ring is coupled. The wiper structure of claim 1, wherein the upper end of the housing further includes a space having a diameter wider than that of the pivot shaft so that a space in which the uneven portion of the flat washer is bent downward is formed.