JP2000289575A - Wiper structure for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the occurrence of noise when a wiper is inverted by floating a wiper blade from a window with lugs integrally provided on the window when the wiper reaches an inversion position. SOLUTION: Ride-over sections 10b with no lip 10a are provided at both end sections of a wiper blade 10, both ride-over sections 10b ride over the lugs 11L of a window M1 when a wiper W1 reaches an inversion position, thereby the lip 10a is slightly floated from the window M1. When a wiper arm is rotated by a fixed angle after the wiper W1 is inverted, the ride-over sections 10b are released from the lugs 11L, and the lip 10a is again pressed to the window M1 by proper pressing force to wipe the window M1 in the pressed state via the rotation of the wiper arm. When the wiper W1 reaches an inversion position on the opposite side, both ride-over sections 10b again ride over the lugs 11L on the opposite side, and the lip 10a is slightly floated from the window M1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a wiper attached to a front window or a rear window of an automobile.

[0002]

2. Description of the Related Art Generally, a wiper of this type has an arm which reciprocates at a constant angle by driving a motor, and a blade attached to a tip of the arm. The blade includes a rubber lip and the lip. It is composed mainly of holding metal fittings. In such a wiper, the lip reciprocates while wiping the window surface due to the reciprocating motion of the arm. However, the lip inclining direction is reversed with the reversal of the wiping direction. There has been a problem that the lip rubs against the surface or the lip hits the window surface at the time of reversing, thereby generating abnormal noise. Conventionally, as a technique for solving this problem, for example, Japanese Unexamined Patent Publication No. Hei.
The configuration disclosed in Japanese Patent Application Publication No. 1 (1994) is provided.

In this prior art, as shown in FIG. 8, a guide bar 2 having a portion corresponding to a wiper reversal position bent upward is disposed below a wiper arm 1, and the wiper reaches a wiper reversal position. The arm 1 is lifted by the bent portion 2a, whereby the wiper blade 3 is slightly lifted off the window surface 4. According to the related art, the wiper blade 3 is lifted off the window surface 4 before and after reversing. Therefore, the above-mentioned problem of the generation of abnormal noise could be solved.

[0004]

However, in the above-mentioned conventional configuration, it is necessary to separately provide a guide bar 2 for guiding the wiper arm 1 in the lifting direction.
There has been a problem that the number of parts and the number of assembling steps are increased. SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicle wiper structure that can prevent generation of abnormal noise at the time of reversing without increasing the number of parts and the number of assembly steps.

Therefore, the present invention has a wiper structure having the structure described in each claim. According to the wiper structure of the first aspect, when the wiper reaches the reversing position, the wiper blade is lifted out of the window by the projection provided integrally with the window, thereby preventing generation of abnormal noise when the wiper is reversed. it can. In addition, since the projection for lifting the wiper blade from the window is provided integrally with the window, a separate member such as the conventional guide bar 2 is not required, thus increasing the number of parts and the number of assembling steps. Never.

According to the wiper structure of the second aspect, when the wiper reaches the reversing position, both ends of the wiper blade ride on the projections and the wiper blade floats up from the window, thereby generating abnormal noise when the wiper is reversed. Can be prevented. Also in this case, since the projection is provided integrally with the window, the number of parts and the number of assembling steps do not increase as in the related art.

According to the wiper structure of the third aspect, when the wiper reaches the reversal position, the bracket rides on the projection and the wiper blade rises from the window, thereby preventing generation of abnormal noise when the wiper is reversed. Also, since the projection is provided integrally with the window, the number of parts and the number of assembling steps are not increased as compared with the conventional case.

According to the wiper structure of the fourth aspect, when the wiper reaches the reversing position, the wiper arm rides on the projection and moves in a direction away from the window, whereby the wiper blade rises from the window. Generation of abnormal noise at the time of rotation of the wiper can be prevented, and since the projection is provided integrally with the window, the number of parts and the number of assembling steps do not increase as in the related art. In addition, in this configuration, the projection is provided near the turning base of the wiper arm, that is, at an inconspicuous portion near the end of the window, so that the appearance of the window is not impaired.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a first embodiment of the present invention will be described with reference to FIGS. As shown in FIG.
In the wiper structure of the embodiment, when the wiper W1 is turned over, both ends of the wiper blade 10 ride on the projections 11L, 11L (or 11R, 11R) formed integrally with the window M1, respectively, whereby the lip 10a of the wiper blade 10 is moved. Slightly raised from the window M1,
It is configured to prevent generation of abnormal noise when the wiper is inverted. The wiper blade 10 is attached to a tip of a wiper arm 12 rotatably provided below the window M1. This is the same as the conventional configuration. The window M1 is formed by integral molding of a synthetic resin together with the projections 11L and 11R. In this window M1, projections 11L, 11L, 11R, 11R are integrally formed at a total of four positions corresponding to both ends of the wiper blade 10 at the right and left wiper reversal positions.

On the other hand, as shown in FIGS. 2 and 3, on both ends of the wiper blade 10, there are provided riding portions 10b, 10b having no lip 10a, and when the wiper W1 reaches the reversing position, both of them are provided. Ride section 10b, 1
0b are the projections 11L, 11L (or 1
1R, 11R), whereby the lip 10a slightly rises from the window M1. After the reversal of the wiper W1,
When the wiper arm 12 is rotated by a predetermined angle, the riding portions 10b, 10b are moved to the protrusions 11L, 11L (or 11L).
R, 11R), the lip 10a is again pressed against the window M1 with an appropriate pressing force, and the window M1 is wiped by the rotation of the wiper arm 12 in the pressed state. When the wiper W1 reaches the reversing position on the opposite side as shown by a two-dot chain line in FIG. 1, the both riding portions 10b, 10b again ride on the projections 11R, 11R on the opposite side, and the lip 10b is moved to the window M.
Float from one.

According to the wiper structure of the first embodiment configured as described above, the projections 11L, 1 provided integrally with the window M1.
The riding portions 10b, 10b of the wiper blade 10 ride on 1L, 11R, 11R, and the lip 10
Since a is raised from the window M1, the guide bar 2 as in the related art is not required, and therefore, generation of abnormal noise when the wiper W1 is inverted is prevented without increasing the number of parts and the number of assembling steps. Can be.

Next, FIGS. 4 and 5 show a second embodiment of the present invention. In the second embodiment, a projection 21 for lifting the wiper blade 20 from the window M2 is provided.
L and 21R are different from the first embodiment in that a total of two L and 21R are provided corresponding to the left and right reversal positions of the wiper W2. These two left and right projections 21L, 21R
Is provided integrally with the synthetic resin window M2.
This is the same as the first embodiment. On the other hand, as shown in FIG. 5, near the center of the wiper blade 20, that is, near the connection between the wiper arm 22 and the wiper blade 20,
Brackets 23L and 23R are attached. The brackets 23L and 23R have a shape in which the tip of the small piece is curved, and are attached to both sides near the center of the wiper blade 20 with the tip curved side facing downward. The left bracket 23L in the figure rides on the left projection 21L in the wiper reversal position on the left side in the figure, and the right bracket 23R rides on the right projection 21R in the right wiper inversion position in the right side in the figure. Floating from window M2. According to the wiper structure of the second embodiment configured as described above, the lip 20a is separated from the window M2 because the bracket 23L (or 23R) rides on the projection 21L (or 21R) at any reversal position. Accordingly, it is possible to prevent generation of abnormal noise when the wiper W2 is inverted. The brackets 23L and 23R may be formed integrally with the wiper blade 20.

Next, FIGS. 6 and 7 show a wiper structure according to a third embodiment. The protrusions 31L and 31R in the third embodiment are provided corresponding to the portions near the turning base of the wiper arm 32 at the two inverted positions of the wiper W3. Also in the third embodiment, the window M3 is formed using a synthetic resin as a material.
Both projections 31L and 31R are provided integrally with this window M3 as in the second embodiment. According to the wiper structure of the third embodiment, when the wiper W3 reaches the reverse position on the left side in the figure, the wiper arm 32 rides on the protrusion 31L on the left side in the figure as shown in FIG. (Not shown) rises from the window M3, thereby preventing generation of abnormal noise when the wiper W3 is inverted. When the wiper W3 reaches the reverse position on the right side in the figure, the wiper arm 32 rides on the protrusion 31R on the right side in the figure, so that the lip of the wiper blade 30 rises from the window M3 in the same manner as described above. Is prevented from occurring.

In the case of the third embodiment, the projections 31L, 3
Since 1R is arranged corresponding to the portion of the wiper arm 32 near the rotation base, the projections 31L and 31R are arranged near the lower edge of the window M3, and as a result, both projections 31L and 31R. Can be arranged at relatively inconspicuous sites.

[Brief description of the drawings]

FIG. 1 is a view showing a first embodiment of the present invention, and is a front view of a window.

FIG. 2 is a view taken in the direction of the arrow (2) in FIG. 1 and shows a state in which a rider of the wiper blade rides on a protrusion.

FIG. 3 is a sectional view taken along the line (3)-(3) of FIG. 1, showing a state in which a rider of a wiper blade rides on a protrusion.

FIG. 4 is a view showing a second embodiment of the present invention, and is a front view of a window.

FIG. 5 is a sectional view taken along the line (5)-(5) of FIG. 4, showing a state in which the bracket rides on the protrusion, and as a result, the lip rises from the window.

FIG. 6 is a view showing a third embodiment of the present invention, and is a front view of a window.

7 is a sectional view taken along line (7)-(7) of FIG. 6, showing a state in which the wiper arm rides on the protrusion.

FIG. 8 is a view showing a conventional wiper structure.

[Explanation of symbols]

2 Guide bar W1 Wiper (first embodiment) 10 Wiper blade, 10a Lip, 10b Ride-up portion M1 Window 11L Projection (left window), 11R Projection (right window) W2 Wiper (second) 20) Wiper blade, 20a ... Lip 21L ... Projection (left side of window), 21R ... Projection (right side of window) 23L, 23R ... Bracket W3 ... Wiper (third embodiment) 30 ... Wiper blade 31L ... Projection (left side of window) ), 31R ... Projection (right side of window)

Claims (4)

[Claims] 1. A structure of a wiper attached to a resin window of an automobile, wherein a protrusion for allowing a wiper blade to float up from the resin window is provided at a wiper reversal position of the resin window. Car wiper structure. 2. The wiper structure according to claim 1, wherein:
An automobile wiper structure in which projections are arranged at positions corresponding to both ends of a wiper blade at a wiper reversal position. 3. The wiper structure according to claim 1, wherein
A wiper structure for an automobile in which a bracket is provided at a central portion of a wiper blade, and a projection is arranged at a position corresponding to the bracket at a wiper reversal position. 4. The wiper structure according to claim 1, wherein
A wiper structure for an automobile in which a projection is disposed at a position corresponding to a position near a rotation base of a wiper arm at a wiper reversal position.