JPS63258243A - Automatic oily film removal mechanism for vehicle windshield - Google Patents

Abstract

PURPOSE:To remove effectively/not only water drops but also an oily film from the surface of a window by providing scraping parts as a pair on the tip of a wiper blade in such a manner as to easily bend internally but hardly externally, and introducing a washing liquid to a groove between both scraping parts for enabling the jetting of the liquid. CONSTITUTION:A scraping part 11 on the tip of a wiper blade B is formed right and left as a pair and a notched groove 12 is formed on the outside of each scraping part. The wiper blade B is thereby so constituted as to bend inside easily but hardly outside. A groove 10 is provided between the scraping parts 11 and 11 as a pair for enabling a washing liquid fed from a washing liquid tank via motor pump to be jetted therein. When a wiper is operated, the scraping part 11 forward of the drive direction thereof is relatively in weak contact and removes water drops on the surface of a windshield G. And the washing liquid jetted to the inside of the groove 10 and the rearward scraping part 11 in a relatively strong contact condition removes an oily film on the surface of the windshield G. According to the aforesaid constitution, not only water drops but also an oily film can be effectively scraped and removed from the surface of the windshield G.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an automatic oil film removal mechanism for automobile windshields.

(Prior Art and its Problems) Car accidents at night in rainy weather often occur when the lights of an oncoming vehicle reflect an oil film on the windshield, dazzling the driver and causing him to lose his visibility. Therefore, when driving at night in rainy weather, the washer fluid is sometimes sprayed on the windshield surface G to remove the oil film, but the washer fluid may be diluted by rainwater or may not be sprayed over the entire surface of the windshield G. Therefore, it is difficult to completely remove the oil film from the surface of the windshield.

Therefore, conventionally, as shown in FIG. 6, cleaning liquid supplied from a cleaning liquid tank T by a motor pump M is supplied to the central groove of the wiper blade B through a conduit P, and the wiper W is swung left and right to clean the windshield. A mechanism for removing the oil film of G has been proposed (Utility Model Application Publication No. 182859/1983).
However, as shown in FIG. 7, even if the cleaning liquid is simply supplied to the central groove C of the wiper blade B, it will not function properly as a wiper blade, that is, the frictional resistance against the windshield G will be large. A problem arises in that the wiper blade B generates abnormal noise when sliding on the surface of the windshield G, does not reverse when twisted or when the wiper W swings, and does not perform an oil film removal function. On the other hand, as shown in FIG. 8, there is a symmetrical sweeping surface 9 in the shape of an approximately inverted triangle.
A wiper blade B has been proposed in which the cleaning liquid is supplied from above to the through hole 6' through an open lower part to the central groove formed from the base body surface 4, but the base body surface 4 is bent to the outer surface. It has an adjustment groove 5 and a relatively large through hole 6 on the inside to make the body thin in vertical section and give flexibility at the constriction, so that when an unreasonable horizontal pressing force is applied to the blowing surface 9, As the wiper blade B is devised to absorb this, the main body is severely twisted due to the tH movement of the wiper blade B toward the 0th surface of the windshield, and the opening lower part is deformed and closed, or the body part is not given flexibility. Because the wiper blade is formed with a through hole 6, the cleaning liquid injected into the upper part of the hole falls downward and is not evenly distributed. During the operation of B, the front blade tip strongly hits the windshield 0 surface, which not only causes abnormal noise, but also causes the rear blade tip to lift up and damage the windshield surface 9.
An oil film is formed due to the cleaning liquid supplied during the period of 9 days *i
This caused the problem that it was not removed. Moreover, the brushing surface 9.9, which is bent by the pressing force at one end, does not easily reverse even if the wiper W starts swinging in the opposite direction from the swinging end point, and the wiper blade B cannot perform its normal function. This results in a point.

(Objective of the Invention) A first object of the present invention is to provide an automatic oil film removal mechanism that can solve the above conventional problems and exhibit a normal oil film removal function.

A second object of the present invention is to provide an automatic oil film removal mechanism that can uniformly distribute and supply cleaning liquid to the longitudinal direction of the central groove of the wiper blade B.

Furthermore, a third object of the present invention is to provide an automatic oil film removal mechanism that can achieve the above first and second objects at the same time and can remove oil film more efficiently.

(Configuration for Achieving the Objective) According to the present invention, the wiper blade B generates abnormal noise when sliding on the surface of the windshield G, does not reverse when twisted or when the wiper W swings, and does not perform the oil film removal function. The problem arises from the fact that the blade tips of wiper blade B have the same shape on the left and right, and the flexibility of the blade tips is equal in both the inside and outside directions. (By forming a central groove by aligning at least a pair of blade tips that are difficult to bend outward and have different inside and outside bending performance, the blade tip in the front of the wiper blade B in the sliding direction is light and The tip of a certain blade is now sliding strongly on the 0 side of the windshield without making any abnormal noise, and it is also possible to remove water droplets from the 0 side of the windshield in the first stage, and then remove the oil film along with the cleaning liquid in the second stage. We discovered that when the wiper W starts to swing in the opposite direction from the end of its swing, the blade tip is reversed and the above two-stage removal function is always achieved. The invention has been completed to achieve this goal, and its gist is as follows: ``The cleaning liquid supplied from the cleaning liquid tank T by the motor pump M is supplied to the central groove of the wiper blade B through the conduit P. In the mechanism for removing the oil film on the windshield G by rocking, the central groove lO of the wiper blade B is arranged in parallel with at least a pair of blade tips 11 and 11 having different inner and outer bending performance, in which the central groove lO is easy to bend inward and difficult to bend outward. The front blade tip 1 has a large bending shape when the wiper W swings from side to side.
1 by relatively weak contact with the windshield G, and then the oil film is removed by wiping off the cleaning liquid interposed between both blade tips 11 by relatively strong contact of the small bent rear blade tip 11 with the windshield G. At the same time, the blade tip 11 is configured to easily reverse when the wiper W starts swinging from the end point of swinging in the opposite direction. !
! It is in the removal mechanism.

It is important that the blade tip 11 has different bending performance, i.e., it is easy to bend inward and difficult to bend outward, and its specific form is that the inner side is flat while the outer side has an inclined surface that expands upward. It has a wedge shape and can be formed so as to form a cutout groove 12 extending in the longitudinal direction of the blade tip at the upper outer side.

Next, the configuration for achieving the second object of the present invention is that even if the cleaning liquid is simply supplied to the central groove of the wiper blade B,
The cleaning liquid is not evenly distributed over the entire surface of the windshield G.
The reason why the oil film cannot be completely removed is that the wiper blade B body is deformed due to sliding resistance on the zero surface of the windshield, and the opening that supplies the cleaning liquid from the through hole to the central groove is closed. Because the body is large enough to provide flexibility, the cleaning liquid introduced into the hole from the top of the hole does not disperse up and down in the longitudinal direction of the hole, but instead falls from the opening into the central groove. It was developed with a focus on the following, and its gist is: ``Cleaning IIL supplied from a cleaning liquid tank T by a motor pump M is supplied to the central groove of the wiper blade B via a conduit P to clean the wiper W. In the mechanism for removing oil film from the windshield G by left and right swinging, a slit hole 30 is provided in the central groove 10 of the wiper blade B.
A through hole 20 extending in the vertical direction through which the cleaning liquid is supplied is formed relatively small so that the cleaning liquid injected into the through hole 20 from outside the wiper blade B is diffused and guided in the vertical direction of the wiper blade B. At the same time, except for the blade tip 11 forming the central groove 1o, the main body of the wiper blade B is formed into a shape that is difficult to deform when the wiper W swings left and right, and the cleaning liquid introduced into the through hole 20 is passed through the central groove 1.
This is an automatic oil film removal mechanism for an automobile windshield, in which a slit hole 30 for supplying oil to the oil is configured so as not to be closed.

The cross-sectional shape of the vertically extending through-hole 20 is rectangular, and when the swan 1-rei 3o is formed to open at the center of the bottom surface, the cleaning liquid injected into the through-hole through the corner of the rectangular cross-section is It will diffuse up and down inside the hole. Also, should the cleaning liquid be injected from the outside of the wiper blade B into the through hole 20 above the vertical center of the wiper blade B, taking into account the centrifugal force and gravity that act on the cleaning liquid when the wiper W swings? ! i. It is preferable to set the upper and lower even diffusion positions within the through hole 20. Furthermore, it is preferable that the direction in which the cleaning liquid is injected into the through hole 20 from outside the wiper blade B is not directed toward the slit hole 30 at the bottom of the through hole 2o, but in a horizontal direction.

In addition, by using the structure that achieves the first object of the present invention and the structure that achieves the second object, the cleaning liquid flows into the central groove (
1) It is a more preferable form as an oil film removal mechanism for the entire surface of the windshield G because it is dispersed uniformly and exhibits a two-stage oil film removal function.

Hereinafter, the present invention will be described in detail based on such optimum embodiments.

(Example) Fig. 1 is a side view of the automatic oil film removal mechanism according to the present invention, Fig. 2 is a perspective view of wiper blade B, which is the main part thereof, and Fig. 3 is a cross-sectional view taken along the line m-m. .

In the drawing, W is a wiper, and metal plates F are installed in the upper slit holes SL and SL on both sides of the body of the wiper blade B, respectively.
The upper part of the blade B is gripped and fixed together with the metal plate F by the gripping part G that is inserted into the lower slit hole S2, and the cleaning liquid supplied by the motor pump M from the cleaning liquid tank T is passed through the conduit P. The oil is supplied to the through hole 20 communicating with the center 'tRLO of the wiper blade B through the slit hole 30, and the oil film on the windshield G is removed by the left and right swinging of the wiper W.

The central groove 10 of the wiper blade B is formed with at least a pair of blade tips 11, 11 arranged in parallel that are easy to bend inward and hard to bend outward, and have different inner and outer bending performance.

That is, as shown in FIG. 3, the blade tip 11 has a wedge shape in which the inside is flat and the outside has an upwardly expanding slope, and a cutout groove 12 extending in the longitudinal direction of the blade tip is formed at the top of the outside. Therefore, it is easy to bend inwardly due to the notched groove 12, and it is difficult to bend outwardly when the notched groove 12 is closed, making the inner and outer bending performance different.

On the other hand, the vertically extending through hole 20 that communicates with the central groove 10 of the wiper blade B through the slit hole 30 and supplies the cleaning liquid supplies the cleaning liquid injected into the through hole 20 from outside the wiper blade B to the wiper blade B. A blade tip 1 that is relatively small and has a rectangular cross-sectional shape so as to be guided by diffusion in the vertical direction, has a slit hole 30 opened at the center of its bottom surface, and forms the central groove 10.
Except for 1, the wiper blade B main body is formed into a trapezoidal shape that is difficult to deform when the wiper W swings left and right, and the slit hole 3 supplies the cleaning liquid introduced into the through hole 20 to the central groove 10.
Configure so that 0 is not closed. Further, the position A where the cleaning liquid is injected from the wiper blade B3'- into the through hole 20 is the cleaning liquid through hole 2 above the vertical center of the wiper blade B.
It is set to a position that spreads evenly above and below within 0, and
The direction in which the cleaning liquid is injected into the through hole 20 from outside the wiper blade B is set to be horizontal.

Therefore, in the above configuration, the cross-sectional shape of the through hole 20 extending in the vertical direction is rectangular, and furthermore, the direction in which the cleaning liquid is injected into the through hole 20 from outside the wiper blade B is through the slit hole 30 at the bottom of the through hole 20. Since the cleaning liquid injected into the through hole 20 does not directly fall into the lower central groove 10 through the slit hole 30 located at the center of the bottom surface, it flows through the corner of the rectangular cross section. The cleaning liquid will diffuse up and down in the longitudinal direction within the through hole. In addition, the position where the cleaning liquid is injected into the through hole 20 from outside the wiper blade B is as follows.
When the wiper W swings, it acts on the cleaning liquid (it is set above the vertical center of the wiper blade B in consideration of centrifugal force and gravity, so the cleaning liquid is spread evenly up and down inside the cleaning liquid hole 20 and spreads evenly in the central groove. 10 will be supplied.

On the other hand, when the wiper W swings left and right, the front blade tip 11 bends inward, so it bends relatively largely so as to open the notch groove 12, and comes into relatively weak contact with the windshield G. On the other hand, since the rear blade tip 11 is bent outward, it is difficult to bend outward beyond the position where the notch groove 12 is closed, and is approximately held at that position, making relatively strong contact with the windshield G ( (See Figures 4 and 5), therefore, the front blade tip 11 slides in relatively weak contact with the windshield G, thereby removing water droplets from the windshield 0 surface without making any abnormal noise. Next, the small bent rear blade tip 11 slides in relatively strong contact with the windshield G, thereby wiping the cleaning liquid supplied to the center 'a10 between the front blade tip 11 and the rear blade tip 11 and removing water droplets. Remove the oil film from the surface of the windshield. and,
When the wiper W finishes swinging and starts swinging in the opposite direction, the blade tip must be bent and reversed in the opposite direction.
If the front and rear blade tips are evenly pressed against the zero surface of the windshield, it will be difficult to turn the blade over, but in the present invention, the blade tip 1, which has been in strong contact and has been located at the rear, is
1 is at the front and is in a state where it is easy to bend inward, making it easy to reverse, and the tip 11 of the weakly contacting blade with a large bend, which has been located at the front, lifts up slightly during the above-mentioned reversal, so it is easy to reverse. Reverse the notch groove 12
It will be bent and held inverted until it closes.

In addition, if the oil film removal mechanism can perform the reversing operation smoothly and easily through two-stage operation, the stress on the wiper blade B will be small and the slit hole 30 will not be closed due to deformation, which is convenient. .

(Effects of the Invention) As is clear from the above description, according to the present invention, (1) at least a pair of blade tips having different lateral and lateral bending performance, which are easy to bend inward and hard to bend outward; Since the central grooves are formed in parallel, the tip of the blade at the front in the sliding direction of wiper blade B is light (and the tip of the blade at the back is strong and slides on the zero surface of the windshield, It does not make any abnormal noises, and it has a two-stage removal function in which the first stage removes water droplets from the surface of the windshield, and the second stage removes the oil film along with the cleaning liquid, making it highly effective in removing oil films.

Moreover, since the blade tip is easily reversed when the wiper W starts swinging in the opposite direction from the end point of swinging, the two-stage removal function described above is always performed.

Also, ■ the center ij of the above wiper blade B! A vertically extending through hole 20 communicates with the wiper blade B through a slit hole 30 and supplies cleaning liquid to the through hole 2 from outside the wiper blade B.
It is formed relatively small so that the cleaning liquid injected into the wiper blade B is diffused and guided in the vertical direction of the wiper blade B, and except for the blade tip 11 forming the central groove IO,
The wiper blade B main body is formed into a shape that is difficult to deform when the wiper W swings left and right, and the hole 30, which supplies the cleaning liquid introduced into the through hole 20 to the central groove IO, is configured so as not to be closed. Therefore, the cleaning liquid supplied to the through hole 20 is evenly supplied to the entire central groove extending in the longitudinal direction of the wiper blade B, and as a result, the cleaning liquid is evenly distributed over the entire surface of the windshield G, making it possible to completely remove the oil film. Become.

Furthermore, (1) such a cleaning liquid uniformly distributed supply mechanism can further improve the oil film removal effect due to the synergistic effect with the above-mentioned two-stage oil film removal mechanism.

As a result, it helps to reduce car accidents that occur when driving at night in rainy weather, which are likely to occur when the lights of an oncoming vehicle dazzle the driver due to the reflection of an oil film on the windshield surface, causing a loss of visibility.

[Brief explanation of drawings]

Fig. 1 is a side view of the automatic oil film removal mechanism according to the present invention, Fig. 2 is a perspective view of the wiper blade B that constitutes the main part, Fig. 3 is a sectional view taken along the line ■-m, Fig. 4 and Figure 5 is an explanatory diagram of the operating mechanism of wiper blade B, Figure 6 is a perspective view showing an outline of a conventional automatic oil film removal device, and Figures 7 and 8.
The figure is a longitudinal sectional view of a conventional wiper blade B. 10...Central groove, 11...Blade tip 12...Notch groove 20...Through hole 30...Slit hole

Claims (7)

[Claims] (1) In a mechanism in which the cleaning liquid L supplied by the motor pump M from the cleaning liquid tank T is supplied to the central groove of the wiper blade B through the conduit P and the oil film on the windshield G is removed by the left-right swing of the wiper W, The central groove 10 of the wiper blade B is formed in parallel with at least a pair of blade tips 11, 11 that are easy to bend inward and hard to bend outward, and have different inner and outer bending performance, so that when the wiper W swings from side to side, the bending becomes large. Front blade tip 1
1 by relatively weak contact with the windshield G, and then the oil film is removed by wiping off the cleaning liquid interposed between both blade tips 11 by relatively strong contact of the small bent rear blade tip 11 with the windshield G. Also, an automatic oil film removal mechanism for an automobile windshield, characterized in that the blade tip 11 is easily reversed when the wiper W starts swinging from the end point of swinging in the opposite direction. (2) While the blade tip 11 is flat on the inside, it has a wedge shape with an upwardly expanding slope on the outside, and a notched groove 12 extending in the longitudinal direction of the blade tip is formed on the top of the outside, making it easy to bend inward and outward. The automatic oil film removal mechanism according to the above item (1), which has an inner and outer bending performance that makes it difficult to bend. (3) In a mechanism in which the cleaning liquid L supplied by the motor pump M from the cleaning liquid tank T is supplied to the central groove of the wiper blade B through the conduit P and the oil film on the windshield G is removed by the left-right swing of the wiper W, A slit hole 30 is provided in the central groove 10 of the wiper blade B.
A through hole 20 extending in the vertical direction through which the cleaning liquid is supplied is formed relatively small so that the cleaning liquid injected into the through hole 20 from outside the wiper blade B is diffused and guided in the vertical direction of the wiper blade B. At the same time, except for the blade tip 11 forming the central groove 10, the main body of the wiper blade B is formed into a shape that is difficult to deform when the wiper W swings from side to side.
1. An automatic oil film removal mechanism for an automobile windshield, characterized in that a slit hole 30 for supplying oil to a vehicle is configured so as not to be closed. (4) The automatic oil film removal mechanism according to item (3), wherein the vertically extending through hole 20 has a rectangular cross-sectional shape, and the slit hole 30 is opened at the center of the bottom surface thereof. (5) The above-mentioned (3), wherein the position where the cleaning liquid is injected from the outside of the wiper blade B into the through hole 20 is a position where the cleaning liquid is evenly spread vertically inside the cleaning liquid through hole 20 above the vertical center of the wiper blade B.
Automatic oil film removal mechanism as described in section. (6) Items (3) to (5) above, wherein the direction in which the cleaning liquid is injected into the through hole 20 from outside the wiper blade B is the horizontal direction.
The automatic oil film removal mechanism described in any one of paragraphs. (7) A mechanism in which the cleaning liquid L supplied by the motor pump M from the cleaning liquid tank T is supplied to the central groove of the wiper blade B through the conduit P and the oil film on the windshield G is removed by the left-right swing of the wiper W, The central groove 10 of the wiper blade B is formed in parallel with at least a pair of blade tips 11, 11 that are easy to bend inward and hard to bend outward, and have different inner and outer bending performance, so that when the wiper W swings from side to side, the bending becomes large. Front blade tip 1
1 by relatively weak contact with the windshield G, and then the oil film is removed by wiping off the cleaning liquid interposed between both blade tips 11 by relatively strong contact of the small bent rear blade tip 11 with the windshield G. In addition, the blade tip 11 is configured to easily reverse when the wiper W starts swinging from the end point of swinging in the opposite direction, and the central groove 1 of the wiper blade B
0 through a slit hole 30 and extends in the vertical direction for supplying cleaning liquid so that the cleaning liquid injected into the through hole 20 from outside the wiper blade B is diffused and guided in the vertical direction of the wiper blade B. It is formed relatively small, and except for the blade tip 11 forming the central groove 10, the wiper blade B main body is formed into a shape that is difficult to deform when the wiper W swings left and right, and the cleaning liquid introduced into the through hole 20 is An automatic oil film removal mechanism for an automobile windshield, characterized in that a slit hole 30 supplied to a central groove 10 is configured so as not to be closed.