JP2014530788A - Windshield wiper device - Google Patents

Abstract

A flat blade type windshield wiper device (1) comprising an elastic, elongated carrier element and an extruded elongated wiper blade (2) made of a flexible material, wherein said wiper blade (2 ) Has a wiping member (14) installed in contact with the windshield to be wiped, and the wiper blade (2) is arranged with the long piece member (4) of the carrier element. The windshield wiper device (1) comprises a coupling (6) for a swing arm (7), the swing arm (7) having one end thereof Is connected to the connector (6) so as to be pivotable around a pivot shaft adjacent to the long shaft (3), and the long groove (3) includes a bottom portion (4) 19) the longitudinal hollow channel defined by ( 8) to form a central longitudinal section of the wiper blade (2) that extends downward directly below the long piece member (4) and is perpendicular to the windshield to be wiped. The height of the hollow channel (18) is defined as 1 / 40W ≦ H ≦ 1 / 5W, W is the width of the long piece member (4), and H is perpendicular to the windshield to be wiped The height of the hollow channel (18) at the position of the central longitudinal section of the wiper blade (2). [Selection] Figure 5

Description

  The present invention relates to a flat blade type windshield wiper device comprising an elastic, elongated carrier element and an extruded elongated wiper blade made of a flexible material, wherein said (extruded elongated) wiper blade Includes a wiping member installed in contact with the windshield to be wiped, and the wiper blade includes a central long groove in which the long piece member of the carrier element is disposed, A windscreen comprising a coupling for a peristaltic arm, wherein the peristaltic arm is pivotally coupled to the coupling around a pivot axis proximate one end thereof. The present invention relates to a wiper device.

  Such a windscreen wiper device is generally known. Such a device for a front wiper according to the prior art is designed as a so-called “flat blade” or “yokeless blade” and is not made of several yokes pivotally connected to each other in use, The wiper blade is biased by the carrier element, resulting in a characteristic curvature.

  In view of the above circumstances, an object of the present invention is to provide an improved windscreen wiper device.

  In order to achieve the object object related to the windscreen wiper device described in the introduction (technical field), in the present invention, the long groove has a long hollow channel defined by the long piece member and the bottom of the long groove. In order to form, the height of the hollow channel at the position of the central longitudinal section of the wiper blade, which extends downward just below the long piece member and is perpendicular to the windshield to be wiped, 1/40) W ≦ H ≦ (1/5) W, where W is the width of the long piece member, and H is the position of the central longitudinal section of the wiper blade that is perpendicular to the windshield to be wiped The height of the hollow channel in FIG.

  First, the windscreen wiper device can be used for many types of windshields to be wiped, which have different curvatures. Certainly, in order to compensate for these differences in curvature, the hollow channel or “gap” between the long piece and the bottom of the groove is in the direction of freedom of the bottom and thus perpendicular to the windshield to be wiped. Create a change in the position of the wiping member. Second, any tolerance in the shape of the windshield is therefore still compensated.

  According to the present invention, the height of the “gap” varies with the pressure exerted by the peristaltic arm in contact with the wiper blade. Thus, a wiper made of a flexible material, in particular rubber, so that the “gap” between the long piece member and the bottom of the groove decreases or increases when the pressure increases. The blade deforms according to the pressure. Thus, the properties of the wiper are improved when overuse is avoided at the center of the wiper blade at the high pressure exerted by the peristaltic arm. Extensive experimentation and testing clearly shows that the above defined range for the height of the “gap” at the position of the central longitudinal section of the wiper blade that is perpendicular to the windshield to be wiped is highly advantageous. To do. If the height of the “gap” is greater than that shown, the test has shown that in addition to the vertical movement of the wiping member, its rotational movement will also be created. In addition, the stability of the wiper blade is adversely affected. Such rotation adversely affects the so-called “attack angle” of the windshield on the windshield to be wiped. As a result, the nature of wiping will be damaged. If the height of the “gap” is smaller than that shown, variations in the position of the wiping member in the direction perpendicular to the windshield to be wiped, ie, the vertical movement of the wiping member, Would be too small to have any of the positive effects on the distribution of pressure on the wiping member.

  In a preferred embodiment of the windscreen wiper device according to the present invention, the (long) groove is above the long piece member for forming the long hollow channel defined by the long member and the top surface of the groove. Extend in the direction.

  As another preferable aspect of the windscreen wiper device according to the present invention, the wiper blade includes a spoiler on a side surface facing away from the windshield to be wiped.

FIG. 3 is a perspective schematic view of a preferred embodiment of the windscreen wiper device according to the present invention with or without a swing arm. It is a figure which shows the cross section of the wiper blade for using for the wiper apparatus for windshields of FIG. It is a figure which shows the cross section of the wiper blade for using for the wiper apparatus for windshields of FIG. It is a figure which shows the cross section of the wiper blade for using for the wiper apparatus for windshields of FIG. It is a figure which shows the cross section of the wiper blade for using for the wiper apparatus for windshields of FIG.

  Hereinafter, the present invention will be described in more detail with reference to the drawings.

  FIG. 1 shows a preferred modification of a flat blade type windshield wiper device 1 according to the present invention. The windshield wiper device 1 is assembled with an elastic wiper blade 2 having a central or central long groove 3, and a central or central long piece member 4 made of spring band steel is fitted into the long groove 3. (See FIGS. 2 to 5). The member 4 forms a flexible carrier element for the elastic wiper blade 2 and is, in other words, biased at a curved position (curved at the operating position of the windshield to be wiped). The ends of the long piece member 4 and / or the ends of the wiper blade 2 are connected to respective connecting pieces or “end caps” 5 on both sides of the windshield wiper device 1. In this embodiment, the connecting piece 5 is foam-locked (“form-rock”) and force-rocked (“force-rock”) at both ends of the member 4 and the wiper blade 2. A separate component. In another preferred modification, the connecting piece 5 forms one piece with the long piece member 4 made of spring band steel. The windshield wiper device 1 is further assembled with a connecting tool 6 for connecting the peristaltic wiper arm 7 in addition thereto. The peristaltic wiper arm 7 is pivotally connected to the connector 6 around a pivot axis close to one end. The preferred embodiment of FIG. 1 according to the present invention comprises a spoiler or “air deflector” that is in one piece with the rubber wiper blade 2 and extends along its entire length. The connecting tool 6 integrated with the wiper blade 2 is attached on the swing arm 7 as follows. The coupling 9 already fastened on the coupling 6 is pivoted in relation to the coupling 6 so that the coupling 9 can be easily slid over the free end of the peristaltic arm 7. . During this sliding movement, the elastic tongue 10 of the coupling part 9 is initially pushed against the force of the spring and then rebounds into the hole 11 of the peristaltic arm 7 and thus snaps. That is, the elastic tongue 10 is fastened in the hole 11. This is called so-called bayonet connection. The peristaltic arm 7 integrated with the coupling part 9 is swiveled in reverse at a position parallel to the wiper blade 2 for use. Subsequently, by pushing the tongue piece 10 against the spring force (in other words, a push button), the connecting tool 6 and the connecting portion 9 integrated with the wiper blade 2 are released from the swing arm 7. The removal of the coupling tool 6 together with the wiper blade 6 from the peristaltic arm 7 is achieved by sliding the coupling tool 6 and the connecting part 9 integrated with the wiper blade 2 in a direction away from the peristaltic arm 7, and thus normalizing. Is done. The connector 6 includes two cylindrical protrusions 12 extending outward on both sides of the connector 6. These protrusions 12 are pivotably fitted into a cylindrical recess 13 of the same shape associated with the plastic coupling part 9. The protrusion 12 serves as a bearing surface at the position of the pivot axis to pivot the coupling 9 (and associated swing arm 7) around the pivot axis proximate to one end of the pivot arm 7. Operate.

  Although not shown in FIG. 1, it is sufficient for a person skilled in the art that the peristaltic arm 7 is connected to a mounting head fixed for rotation towards a shaft driven by a small motor. To be understood. In use, the shaft carries the mounting head in rotation and rotates alternately clockwise and counterclockwise, and in turn the means of the oscillating wiper arm 7 and the means of the coupling 6 are said wiper blade 2 Move.

  2 to 5, the wiper blade 2 includes a wiping member 14. The wiping member 14 comprises two angle variable web grooves 15 defining a member-like angle variable web 16 therebetween, and a downwardly extending wiping lip 17 in contact with the angle variable web 16. The wiping lip 17 depends on its free end in contact with the windshield to be wiped. In operation, the wiping lip 17, which is a hinge, is inclined to its peristaltic reverse position.

  As shown in FIGS. 2 to 5, the central long groove 3 is formed directly below the long piece member 4 to form a longitudinal hollow channel 18 defined by the long piece member 4 and the bottom 19 of the groove 3. Extends downward. The central elongated groove 3 also extends upwards directly above the elongated piece member 4 to form a longitudinal hollow channel 20 defined by the elongated piece member 4 and the upper surface 21 of the groove 3. This facilitates the insertion of the long piece member 4 inside the groove 3 and reduces the amount of raw materials used to minimize cost and weight.

  The magnitude of the pressure is determined by, for example, the curvature of the windshield to be wiped, the curvature of the long piece member 4, and the force of a spring attached between the attachment head and the peristaltic arm 7. When a relatively low pressure is exerted by the peristaltic arm 7, i.e. the long piece 4 in contact with the wiper blade 2, the height H or "gap" of the hollow channel 18 increases. The free bottom is bent outward so that the wiping member 14 is in a position facing away from the long piece member 4. The wiping member 14 follows its peristaltic motion. In the case of a relatively high pressure situation, it is exerted by the long piece member 4 in contact with the wiper blade 2. As a special example, the height H or “gap” of the hollow channel 18 is reduced. The free bottom is bent inward so that the wiping member 14 can be pushed into the position facing the long piece member 4. In other words, due to the elasticity of the bottom 19 of the groove 3, the wiping member 14 is moved to a position perpendicular to the windshield to be wiped by the pressure exerted by the long piece member 4 in contact with the wiper blade 2. be able to.

  In FIG. 5, according to the present invention, the height H of the hollow channel 18 at the position of the central longitudinal section of the wiper blade 2 perpendicular to the windshield to be wiped is (1/40) W ≦ H ≦ ( 1/5) W, where W is the width of the long piece member 4, and H is the hollow channel 18 at the position of the central longitudinal section of the wiper blade 2 perpendicular to the windshield to be wiped. Of height.

  As shown in FIG. 5, the width W of the long piece member 4 is measured from one external long side surface of the long piece member 4 to the other external long side surface of the long piece member 4. The height H or “gap” is measured from the bottom 19 of the hollow channel 18 to the long piece member 4 at the position of the central longitudinal section of the wiper blade 2 perpendicular to the windshield to be wiped.

  The present invention is not limited to the embodiments shown above, and can be extended to other embodiments within the scope of the claims of the present application.

DESCRIPTION OF SYMBOLS 1 Windshield wiper apparatus 2 Wiper blade 3 Long groove 4 Long piece member 5 Connection piece 6 Connection tool 7 Peristaltic arm 8 Spoiler (air deflector)
DESCRIPTION OF SYMBOLS 9 Connection part 10 Elastic tongue piece 11 Hole 12 Cylindrical protrusion 13 Cylindrical hollow 14 Wiping member 15 Angle variable web groove 16 Angle variable web 17 Wiping lip 18,20 Long hollow channel 19 Bottom 21 Upper surface

Claims (3)

A flat blade type windscreen wiper device (1) comprising an elastic, elongated carrier element and an extruded elongated wiper blade (2) made of a flexible material,
The wiper blade (2) includes a wiping member (14) installed in contact with a windshield to be wiped, and the wiper blade (2) is a long piece member (4) of the carrier element. The windshield wiper device (1) includes a coupling (6) for the swing arm (7), and the swing arm (7) includes: Pivotally connected to said connector (6) around a pivot axis proximate one of its ends,
The long groove (3) is formed on the long piece member (4) to form a longitudinal hollow channel (18) defined by the long piece member (4) and a bottom (19) of the long groove (3). The height of the hollow channel (18) at the position of the central longitudinal section of the wiper blade (2) that extends downward and extends downward and is perpendicular to the windshield to be wiped is (1/40). ) W ≦ H ≦ (1/5) W, where W is the width of the long piece member (4), and H is the center of the wiper blade (2) perpendicular to the windshield to be wiped Windscreen wiper device characterized in that it is the height of the hollow channel (18) at the position of the longitudinal section.   In order for the groove (3) to form a longitudinal hollow channel (21) defined by the long piece member (4) and the upper surface (22) of the groove (3), the long piece member (4) The windscreen wiper device according to claim 1, wherein the windscreen wiper device extends directly upward. The windscreen wiper device according to claim 2, wherein the wiper blade (2) is provided with a spoiler (8) on the side surface facing away from the windshield to be wiped.