JPH0586727U - Adhesion removal structure of blade rubber in wiper device - Google Patents

Abstract

(57) [Summary] [Purpose] To remove foreign matter adhering to the blade rubber. [Structure] At a portion between the first lower reversal position A and the second lower reversal position C of the blade rubber 3 on the window glass surface W, and between the first upper reversal position B and the second upper reversal position D, A groove 6 was provided which was oriented in the longitudinal direction of the blade rubber.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a blade rubber adhering substance removing structure in a wiper device for wiping a window surface of a vehicle such as a passenger car, a bus, and a trust.

[0002]

[Problems to be Solved by Prior Art and Invention]

 Generally, this type of wiper device is configured to wipe the window surface by a blade rubber provided at the tip of a wiper arm that reciprocally swings. By the way, the wiping of the window surface with the blade rubber is sometimes used not only when it is raining but also when foreign matter such as bird droppings and insects adheres to the window surface. In this case, foreign matter adhering to the window surface may in turn adhere to the blade rubber. When foreign matter adheres, the lip of the blade rubber tip rises above the window surface due to the adhered foreign matter, which inevitably lowers the wiping performance, and leaves it on the window surface. If the blade rubber is repeatedly wiped to remove the foreign matter, the foreign matter that adheres to the window may spread back in an arc shape and become difficult to see.

[0003]

[Means for Solving the Problems]

 The present invention was devised in view of the above circumstances to provide a structure for removing deposits of blade rubber in a wiper device that can eliminate these drawbacks. When wiping the window surface with the blade rubber provided at the tip, the blade rubber has a first wiping range from the first lower reversal position to the first upper reversal position, and the first lower wiping range. , The second wiping range from the second lower turning position to the second upper turning position, which further swings beyond the upper turning position, and the second wiping range is selectively wiped. It is characterized in that a groove or ridge oriented in the longitudinal direction of the blade rubber is provided between the first reversal position and the second reversal position on one side.

The present invention, with this configuration, can effectively remove the deposits on the blade rubber.

[0005]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a wiper arm which constitutes a vehicle wiper device, and a wiper arm 2 is integrally attached to a base end portion of the wiper arm 1 so as to be interlocked with a wiper motor (not shown). A blade 4 attached with a blade rubber 3 is attached to the tip of the wiper arm 1, and the wiper arm 1 reciprocally swings on the basis of forward and reverse driving of a wiper motor. It is the same as in the related art that 3a is configured to wipe the window glass surface W.

The wiping range of the window glass surface W by the blade rubber 3 is set as follows. That is, the swing speed of the wiper arm 1 can be switched between two stages of "low speed" and "high speed", but the blade rubber 3 does not move to the first lower position when the wiper arm 1 is "low speed". The first wiping range from the reversal position A to the first upper reversal position B is reciprocally rocked. On the other hand, at "high speed", the blade rubber 3 further swings beyond the first lower reversal position A due to an increase in inertial force due to the fact that the swing speed of the wiper arm 1 becomes faster. It is set so as to reciprocally swing in a wide second wiping range from the second lower reversal position C to the second upper reversal position D, which further swings beyond the first upper reversal position B. Incidentally, the window glass W has four peripheral edges which are adhesively attached to the outer surface of the vehicle body window frame in an overlapping manner in the thickness direction, and in order to hide the adhesive portion, a so-called “black ceramic” film 5 is formed. Are formed on the four peripheral edges of the window glass W. The driver's seat side wiper arm 1 is set so that both the second vertically inverted positions C and D are wiped by the blade rubber 3 to a position beyond the inner edge 5a of the coating film 5, and the passenger side wiper arm 1 is The second lower inverted position C is set to be wiped by the blade rubber 3 to a position beyond the inner edge 5a of the coating film 5.

On the other hand, on the window glass surface W, between the first lower reversal position A and the second lower reversal position C, and the first upper reversal position B and the second upper reversal position D on the driver side. A groove 6 is formed between the blade rubber 3 and oriented in the longitudinal direction of the blade rubber 3. When the blade rubber 3 passes through the groove 6, foreign matter E attached to the lip portion 3a of the blade rubber 3 is removed. It can be removed by scraping it off. Here, the portion where the concave groove 6 is formed may be the glass surface itself, but in this embodiment, it is formed in the coating film 5. In this structure, the inner edge 5a of the coating 5 is formed as a stepped convex portion 5a with respect to the glass surface, and three concave grooves 6 are provided at an outer position slightly beyond this. In addition, the coating 5 itself cannot be seen from the inside of the vehicle.

In the embodiment of the present invention configured as described above, the wiper arm 1 reciprocally swings based on forward and reverse driving of the wiper motor, whereby the blade rubber 3 wipes the window glass surface W. However, in this case, when the foreign matter E such as bird droppings and insects attached to the window glass surface W is wiped off, the foreign matter E may adhere to the lip portion 3a of the blade rubber 3. In such a case, if the swing speed of the wiper arm 1 is set to “high speed” and the wiping range of the blade rubber 3 is set to the second wiping range, the blade rubber 3 has a convex shape of the coating film 5 formed on the window glass surface W. Although it will pass through the portion 5a and the concave groove 6, at this time, the foreign matter E adhering to the lip portion 3a contacts the groove surface and the groove edge portion of the convex portion 5a and the concave groove 6, and It will be removed as if it were cut off. As a result, foreign matter adhering to the lip portion 3a may cause the lip portion 3a to float up from the window glass surface W, or foreign matter may spread in an arc shape on the window surface, resulting in poor visibility. Problems can be avoided, and the window surface can always be wiped in a good state in which the lip portion 3a is in tight contact with the window glass surface W.

Moreover, the recessed groove 6 is formed between the first lower reversal position A and the second lower reversal position C, and between the first upper reversal position B and the second upper reversal position D. Since the position of the blade rubber 3 is displaced with respect to any of the reversing positions, there is no fear that the reversing sound will increase, and the blade rubber 3 has no convex portion 5a when wiping the first wiping range. Since it does not interfere with the concave groove 6, the abrasion of the blade rubber 3 due to the contact with the convex portion 5a and the concave groove 6 can be made extremely small. Further, when the wiper arm 1 is stopped, the blade rubber 3 is positioned at the first reversal position A, but the groove 6 is also displaced from the stop position, which means that the wiper arm 3 (1) It is possible to reliably prevent the blade rubber 3 from being habituated by the convex portion 5a and the concave groove 6 during the stop.

Moreover, in this case, since the concave groove 6 is formed in the coating film 5 which cannot be seen from the inside of the vehicle, even if the removed foreign matter E remains in the concave groove 6, it is an obstacle and blocks the view. There is an advantage that there is no.

The present invention is not limited to the above-mentioned first embodiment, and as shown in the second embodiment shown in FIG. 4, the concave groove 7 or the ridge 7a is formed on the glass surface itself, not on the coating film. It may be formed directly, or as in the third embodiment shown in FIG. 5 (X), the coating material 8 may be applied to the glass surface to form the uneven portion. ), The inner edge of the coating film 5 may be tapered to eliminate a step from the glass surface. Further, in this case, the first reversal position A of the blade rubber 3 can be exerted up to the inner position of the inner edge of the coating film 5, which is advantageous in that the wiping range can be widened as much as possible.

[0012]

[Operation effect]

 In summary, since the present invention is configured as described above, when wiping the window surface with a blade rubber, foreign matter such as bird droppings and insects attached to the window surface is transferred to the blade rubber side. In this case, by setting the wiping range of the blade rubber to the second wiping range, the blade rubber will pass through the groove or ridge formed on the window surface. Then, at this time, the adhered matter adhered to the blade rubber is contacted with the concave groove or the ridge and is removed in such a manner as to be scraped off. As a result, it is possible to avoid the problem that the blade rubber floats up from the window surface due to the adhered matter, and the adhered matter spreads in an arc shape on the window surface, and is always good. The window surface can be wiped in this state.

Moreover, since the concave groove or the ridge is formed between the first reversal position and the second reversal position, it is misaligned with respect to any reversal position. It is possible to reliably prevent the reversal sound from increasing and the blade rubber from being habituated by the groove or the ridge when the wiper arm is stopped. In that case, since the blade rubber does not interfere with the concave groove or the convex ridge during the wiping of the first wiping area, it is possible to wear the blade rubber due to the contact with the concave groove or the convex ridge. Can be small.

[Brief description of drawings]

FIG. 1 is a schematic front view of a wiper device.

FIG. 2 is an explanatory diagram showing a wiping range of a blade rubber.

FIG. 3 is a cross-sectional view of a main part.

4 (X) and (Y) are cross-sectional views of a main part in the second embodiment.

5 (X) and (Y) are cross-sectional views of main parts in a third embodiment and a fourth embodiment, respectively.

[Explanation of symbols]

 1 wiper arm 3 blade rubber 6 concave groove A first lower reversal position B first upper reversal position C second lower reversal position D second upper reversal position W window glass surface

Claims (1)

[Scope of utility model registration request] 1. When wiping a window surface with a blade rubber provided at the tip of a reciprocating swingable wiper arm, the blade rubber has a first first inversion position to a first upper inversion position. The wiping range and the second wiping range from the second lower reversal position to the second upper reversal position that further swings beyond the first lower and upper reversal positions are selectively wiped, and In the wiper device, the window surface is provided with a groove or a ridge oriented in the longitudinal direction of the blade rubber between at least one of the upper and lower sides of the first inverted position and the second inverted position. Adhesion removal structure for blade rubber.