JP4147679B2 - Car wiper structure - Google Patents

Description

[0001]
BACKGROUND 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]
[Prior art]
Generally, this type of wiper has an arm that reciprocates at a constant angle by a motor drive, and a blade attached to the tip of the arm, and the blade mainly comprises a rubber lip and a metal fitting that holds the lip. It is configured as.
In such a wiper, the lip reciprocates while wiping the window surface due to the reciprocating movement of the arm, but since the lip inclination direction is reversed as the wiping direction is reversed, the tip of the lip is moved at this time. There was a problem that abnormal noise was generated by rubbing against the surface or by the lip hitting the window surface during reversal. Conventionally, as a technique for solving this problem, for example, a configuration disclosed in Japanese Patent Application Laid-Open No. 2-164651 has been provided.
[0003]
In this conventional technique, as shown in FIG. 8, a guide bar 2 having a portion corresponding to the wiper reversing position bent upward is disposed below the wiper arm 1, and the wiper arm 1 reaching the wiper reversing position is arranged. The wiper blade 3 is lifted by the bent portion 2a, thereby slightly lifting the wiper blade 3 from the wind surface 4. According to the related art, the wiper blade 3 is lifted from the wind surface 4 before and after reversal. The problem of abnormal noise generation was solved.
[0004]
[Problems to be solved by the invention]
However, in the above-described conventional configuration, it is necessary to separately prepare the guide bar 2 for guiding the wiper arm 1 in the lifting direction, which causes a problem of increasing the number of parts and the number of assembling steps.
An object of the present invention is to provide an automobile wiper structure that can prevent the generation of abnormal noise during reversal without increasing the number of parts and the number of assembly steps.
[0005]
For this reason, this invention was set as the wiper structure of the structure described in each claim.
According to the wiper structure of the first aspect, when the wiper reaches the reversal position, the wiper blade is lifted from the window by the protrusion integrally provided on the window, thereby preventing the 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, no separate member such as the conventional guide bar 2 is required, and therefore the number of parts and assembly man-hours are increased. There is nothing.
[0006]
According to the wiper structure of claim 1 , when the wiper reaches the reversal position, both end portions of the wiper blade ride on the protrusions and the wiper blade rises from the window, thereby generating abnormal noise when the wiper is reversed. Can be prevented. Also in this case, since the protrusion is provided integrally with the window, the number of parts and the number of assembling steps are not increased unlike the conventional case.
[0007]
According to the wiper structure of claim 2 , when the wiper reaches the reversal position, the bracket rides on the protrusion and the wiper blade rises from the window, thereby preventing the generation of abnormal noise when the wiper is reversed. Since the protrusion is provided integrally with the window, the number of parts and the number of assembling steps are not increased as in the conventional case.
[0008]
Although not included in the inventions described in the first and second aspects, the same effects can be obtained by the following related inventions. In this related invention, in the structure of a wiper attached to a resin window of an automobile, the wiper blade is lifted from the resin window at a position corresponding to a position near the rotation base of the wiper arm at the wiper reversal position of the resin window. In the wiper structure according to this related invention, when the wiper reaches the reverse position, the wiper arm rides on the protrusion and the wiper arm moves away from the window. As a result, the wiper blade can be lifted from the window to prevent the generation of abnormal noise when the wiper changes, and the projections are integrated with the window, so the number of parts and assembly man-hours can be reduced as in the past. There will be no increase.
Further, in the case of the configuration according to the related invention , the projection is provided near the rotating base of the wiper arm, that is, in an inconspicuous portion near the end of the window, so that the appearance of the window is not impaired.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Next, the 1st Embodiment of this invention is described based on FIGS. 1-3. As shown in FIG. 1, in the wiper structure of the first embodiment, when the wiper W1 is reversed, both end portions of the wiper blade 10 ride on the protrusions 11L and 11L (or 11R and 11R) formed integrally with the window M1, respectively. Thus, the tip of the lip 10a of the wiper blade 10 is slightly lifted from the window M1 to prevent the generation of abnormal noise when the wiper is reversed.
The wiper blade 10 is attached to the tip of a wiper arm 12 that is rotatably provided at the bottom of the window M1. This is the same as the conventional configuration.
The window M1 is manufactured by integral molding of synthetic resin together with the protrusions 11L and 11R. In this window M1, protrusions 11L, 11L, 11R, and 11R are integrally formed at a total of four locations corresponding to both ends of the wiper blade 10 at the left and right wiper reversal positions.
[0010]
On the other hand, as shown in FIGS. 2 and 3, the wiper blade 10 is provided with riding portions 10b and 10b that do not have the lip 10a at both ends, and when the wiper W1 reaches the reverse position, both the riding portions 10b. , 10b ride on the projections 11L, 11L (or 11R, 11R) of the window M1, respectively, and the lip 10a is slightly lifted from the window M1.
When the wiper arm 12 is rotated by a certain angle after the wiper W1 is reversed, when the riding portions 10b and 10b are disengaged from the protrusions 11L and 11L (or 11R and 11R), the lip 10a is again returned to the window M1 with an appropriate pressing force. The window M1 is wiped by the rotation of the wiper arm 12 in the pressed state.
When the wiper W1 reaches the reverse position on the opposite side as indicated by a two-dot chain line in FIG. 1, the two riding portions 10b and 10b again ride on the opposite projections 11R and 11R, and the lip 10b rises from the window M1.
[0011]
According to the wiper structure of the first embodiment configured as described above, the lip 10a moves on the window M1 by the riding portions 10b, 10b of the wiper blade 10 riding on the protrusions 11L, 11L, 11R, 11R provided integrally with the window M1. Therefore, it is possible to prevent the generation of noise during the reversal of the wiper W1, without requiring the conventional guide bar 2 and without increasing the number of parts and the number of assembling steps.
[0012]
Next, FIGS. 4 and 5 show a second embodiment of the present invention. In the second embodiment, projections 21L and 21R for lifting the wiper blade 20 from the window M2 are provided at a total of two locations corresponding to the left and right inversion positions of the wiper W2. Is different. The two left and right projections 21L, 21R are the same as in the first embodiment in that they are integrally provided in a synthetic resin window M2.
On the other hand, as shown in FIG. 5, brackets 23 </ b> L and 23 </ b> R are attached in the vicinity of the center portion of the wiper blade 20, that is, in the vicinity of the connection portion between the wiper arm 22 and the wiper blade 20. The brackets 23L and 23R have a shape in which the tip of a small piece is bent, and are attached to both side portions near the center of the wiper blade 20 with the tip bending side facing downward. The left bracket 23L in the figure rides on the left protrusion 21L in the left wiper reverse position in the figure, and the right bracket 23R in the figure rides on the right protrusion 21R in the right wiper reverse position in the figure. Elevate from window M2.
According to the wiper structure of the second embodiment configured as described above, the bracket 23L (or 23R) rides on the protrusion 21L (or 21R) at any inversion position, so that the lip 20a is separated from the window M2, Thus, it is possible to prevent the generation of abnormal noise when the wiper W2 is reversed. The brackets 23L and 23R may be integrally formed with the wiper blade 20.
[0013]
Next, FIG. 6 and FIG. 7 show related inventions that are not included in the invention described in the claims but can obtain the same operational effects . The protrusions 31L and 31R in this related invention are provided corresponding to the portions near the rotation base of the wiper arm 32 at the two left and right inverted positions of the wiper W3. Also in this related invention , the window M3 is made of synthetic resin, and both the protrusions 31L and 31R are provided integrally with the window M3 as in the second embodiment.
According to the wiper structure of the related invention , 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. ) Floats up from the window M3, and thus the generation of abnormal noise when the wiper W3 is reversed is prevented. Further, when the wiper W3 reaches the reverse position on the right side in the figure, the wiper arm 32 rides on the right protrusion 31R in the figure, and as a result, the lip of the wiper blade 30 rises from the window M3. Is prevented from occurring.
[0014]
In the case of the related invention , since the protrusions 31L and 31R are disposed corresponding to the portions near the rotation base of the wiper arm 32, the protrusions 31L and 31R are disposed in the vicinity of the lower edge of the window M3. As a result, both the protrusions 31L and 31R can be disposed at a relatively inconspicuous portion.
[Brief description of the drawings]
FIG. 1 is a diagram 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 arrow (2) in FIG. 1, and shows a state in which the riding part of the wiper blade rides on the protrusion.
3 is a cross-sectional view taken along the line (3)-(3) of FIG. 1, and is a diagram showing a state where a riding part of a wiper blade rides on a protrusion.
FIG. 4 is a view showing a second embodiment of the present invention and a front view of a window.
5 is a cross-sectional view taken along line (5)-(5) in FIG. 4, and shows a state in which the bracket rides on the protrusion, and as a result, the lip is lifted from the window.
FIG. 6 is a view showing a related invention , and is a front view of a window.
7 is a sectional view taken along line (7)-(7) in FIG. 6 and shows a state where a wiper arm rides on a protrusion.
FIG. 8 is a view showing a conventional wiper structure.
[Explanation of symbols]
2 ... guide bar W1 ... wiper (first embodiment)
DESCRIPTION OF SYMBOLS 10 ... Wiper blade, 10a ... Lip, 10b ... Riding part M1 ... Window 11L ... Projection (left side of window), 11R ... Projection (right side of window)
W2 Wiper (second embodiment)
20 ... Wiper blade, 20a ... Lip 21L ... Projection (left side of window), 21R ... Projection (right side of window)
23L, 23R ... Bracket W3 ... Wiper ( related invention )
30 ... Wiper blade 31L ... Projection (left side of window), 31R ... Projection (right side of window)

Claims (2)

A structure of a wiper attached to a resin window of an automobile, and a protrusion for lifting a wiper blade from the resin window at a wiper reversal position on a forward side and a wiper reversal position on a backward side of the resin window It is a configuration that is provided integrally ,
A wiper structure for an automobile, in which a riding portion having no lip portion is provided at both ends of the wiper blade, and the protrusions are arranged at positions corresponding to the both riding portions . A structure of a wiper attached to a resin window of an automobile, and a protrusion for lifting a wiper blade from the resin window at a wiper reversal position on a forward side and a wiper reversal position on a backward side of the resin window It is a configuration that is provided integrally ,
The central portion of the wiper blade, provided with two brackets in correspondence with the wiper reversal position of the wiper reversal position and the backward movement side of the forward movement side, corresponding to one of the brackets at the wiper reversal position of the forward movement side position and, automobile wiper structure in which the projection at a position corresponding to the other bracket at the wiper reversal position of the backward side.

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