JP2006327549A - Wiper device for windshield - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wiper device for a windshield in which a retaining unit and a pivot arm are connected to each other in a system which is simple but has durability and rigidity. <P>SOLUTION: The wiper device for the windshield is provided with at least one connection restriction unit attached to the retaining unit in a system turnable around a first turning shaft. The retaining unit and the connection restriction unit also have a substantially U-shaped cross section at a mutual connection position and are further provided with the pivot arm attached to the retaining unit turnably around a second turning shaft near one end. The retaining unit is provided with a cross axis at the second turning shaft position and the pivot arm and the retaining unit are mutually connected by interposition of a coupling part 10. The coupling part 10 is provided with at least one elastic tongue part engaged with a hole installed on the pivot arm and having the same shape. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention is a windshield wiper device including at least one connection restraint mounted on a holder in a manner that is rotatable around a first rotation axis, and the holder is also the connection restraint. And a swing arm that has a substantially U-shaped cross section at the interconnection position and is mounted on the holder so as to be rotatable around a second rotation axis near one end. The present invention relates to a windscreen wiper device having a transverse axis at the second rotation axis position.

  This type of windscreen wiper device is well known and includes a number of connecting restraints (yokes) to ensure that the wiper blade contacts the windshield along the entire length of the windshield. ing. Thereby, each connection restraint tool rotates centering on the edge of a holder (carrier). This holder may also be a connection restraint. Usually, the holder and the connection restraint are made of metal. A resin component often called a “spacer” is disposed at a connection position between the holder and the coupling restraint. The resin component is fixed to a holder associated therewith. The swing arm has a hook-shaped end portion that locks the shaft of the holder.

  The disadvantage of such a known windscreen wiper device is that the reliability of the connecting portion is maintained with the swinging arm over time due to the large force actually generated at the connecting portion between the swinging arm and the holding tool. It seems that play between the ingredients occurs and seems to be lost. In practice, it has been found that such play causes frictional contact between these parts and therefore wear.

  The object of the present invention is to overcome the above-mentioned drawbacks of the prior art, and in particular to provide a windscreen wiper device in which the holder and the swing arm are interconnected in a simple but durable and rigid manner. It is to be.

  In order to achieve this object, the windscreen wiper device of the type described in the introduction is such that the swing arm and the holder are interconnected via a joint component, and the joint component is connected to the swing arm. It is characterized in that it comprises at least one elastic tongue that engages a hole of the same shape installed. This makes it possible to achieve an effective and reliable joint with very high wear resistance and minimizing the number of parts.

  In a preferred embodiment of the windscreen wiper device according to the invention, the oscillating arm has at least a substantially U-shaped cross section at the connection position with the joint part, and the hole is a U-shaped cross section. Installed on the base of the.

  In another preferred embodiment of the windscreen wiper device according to the present invention, the joint part is provided with elastic tongues of at least two side surfaces extending outward, and the swing arm is connected to the joint part. The tongue has at least a substantially U-shaped cross section, and each tongue is engaged with a hole of the same shape installed in the leg of the U-shaped cross section.

  In another preferred embodiment of the windscreen wiper device according to the invention, the hole has a closed circumference. Such a closed hole enhances the function of holding the swing arm on the holder in all directions, especially in both the horizontal and vertical directions.

  In another preferred embodiment of the windscreen wiper device according to the invention, the oscillating arm has at least a substantially U-shaped cross section at the connection position with the joint part, and each of the U-shaped cross sections. The legs comprise clamping members that engage around the longitudinal sides of two mutually different fitting parts. These clamping members are formed as ends bent inward of the U-shaped cross section so as to further enhance the function of holding the swing arm on the holder in the vertical direction. The vertical direction refers to a direction perpendicular to the longitudinal direction of the swing arm 2.

  In another preferred embodiment of the windscreen wiper device according to the present invention, the shaft is rotatably engaged with the joint part. In particular, the shaft can be pivotably engaged with at least one recess of the same shape in the joint part.

  In another preferred embodiment of the windscreen wiper device according to the invention, the shaft can be snapped into the recess.

  In another preferred embodiment of the windscreen wiper device according to the present invention, the shaft extends from the position of the swing arm substantially perpendicular to the swing arm, and the shaft has an insertion opening for the recess. The shape of the swingable arm is such that the swingable arm is locked to the position of the recess from a position at least substantially parallel to the swingable arm. In its mounting position, the shaft can be freely inserted into the insertion opening of the recess and is subsequently mounted in the recess. On the other hand, in the operating position, the shaft is locked at a fixed position of the recess. As a result, the shaft cannot be removed from the recess through the insertion opening.

  In another preferred embodiment of the windscreen wiper device according to the present invention, the shaft is formed by two protrusions extending inward on the longitudinal side surface of the holder. Preferably, the protrusion is cylindrical and forms two cylindrical bearing surfaces. The two projections acting as bearing surfaces are spaced apart, so that the force generated on the bearing surface is relatively small.

  In another preferred embodiment of the windscreen wiper device according to the present invention, the shaft is formed by a pin extending from one longitudinal side of the holder to the other longitudinal side.

  In another preferred embodiment of the windscreen wiper device according to the invention, the joint part is made of resin. This resin contains a synthetic material that has some elasticity.

  FIG. 1A shows a perspective view of a windscreen wiper device provided with a first coupling restraint that can be rotatably mounted on the swing arm 2 at the position of the rotating shaft 3. The first connection restraint tool also serves as a holding tool for the two second connection restraint tools 4. The second connection restraint 4 serves as a holder for the four third connection restraints 5. All the connecting restraints are rotatably mounted on the respective holding tools. As a result, the force generated at the position of the rotary shaft 3 is distributed more or less at the end of the third connecting restraint 5 on average, and for the wiper that can be fitted tightly on the end of the third connecting restraint 5. Transmission to the rubber member 6 becomes possible.

  As shown in FIG. 1B, the first connection restraint tool 1 is provided with a shaft in the shape of a transverse pin 7 at the position of the rotation shaft 3. The transverse pin 7 extends from the longitudinal side 8 of one first connecting restraint 1 to the other longitudinal side 9. The joint component 10 is snapped (clipped) to the surface of the pin 7 in a manner that the joint component 10 is rotatably mounted in the concave portion 11 having the same shape. The recess 11 extends under the part 12 of the joint component 10 (FIGS. 2 and 3).

  As shown in FIGS. 2, 3, 4, 5, 6, the swing arm 2 has a U-shaped cross section at a connection position with the joint component 10. As a result, the elastic tongue 13 of the joint component 10 engages with the hole 14 having the same shape installed in the base 15 having a U-shaped cross section. When the swing arm 2 is mounted on the joint part 10 of the first coupling restraint, the elastic tongue 13 is first pushed against the spring force and then pushed back into the hole 14. In this way, snap fastening, that is, clip fastening, for inserting and fastening the elastic tongue 13 into the hole 14 is performed. This is a so-called bayonet connection.

  Each leg 16 of the U-shaped cross section constitutes a clamping member that engages around two oppositely oriented longitudinal sides of the joint part 10. As shown in FIG. 6, these clamping members are integrated with the legs 16 of the U-shaped cross section so as to further enhance the function of holding the swing arm 2 on the joint part 10 of the first connecting restraint in the vertical direction. A bent end 17 is formed on the inner side. The vertical direction refers to a direction perpendicular to the longitudinal direction of the swing arm 2. The bent end 17 remains in a small groove 18 on the longitudinal side of the joint part 10. At the position of the bent end 17, the swing arm 2 has a more or less C-shaped cross section. The swing arm 2 is clipped to the joint component 10 by moving the swing arm 2 in the longitudinal direction.

  The invention is not limited to the examples shown in the drawings, but extends to other embodiments within the scope of the claims. For example, those skilled in the art will understand that the elastic tongue 13 can extend outwardly from the side, and as a result engages the hole 14 of the same shape installed in the leg 16 of the U-shaped cross section. Like.

1 is a perspective view of a preferred embodiment of a windscreen wiper device according to the present invention. It is a top view of the wiper device for windshields of Drawing 1a. It is a perspective view used with the wiper device for windshields of Drawing 1a. It is a perspective view used with the wiper device for windshields of Drawing 1a. It is a perspective view used with the wiper device for windshields of Drawing 1a. It is the perspective view which looked at a part of rocking arm used with the wiper device for windshields of Drawing 1a and 1b from the top. It is a perspective view of the edge part of the rocking | fluctuating arm of FIG.

Claims (12)

A windscreen wiper device comprising at least one connection restraint mounted on a holder in a manner that is rotatable around a first rotation axis,
Both the retainer and the coupling restraint have a substantially U-shaped cross-section at the interconnection position;
A swing arm mounted on the holder so as to be rotatable around a second rotation axis near one end;
The holder includes a transverse axis at the second rotation axis position,
The swing arm and the retainer are interconnected by interposition of joint parts,
The windshield wiper device according to claim 1, wherein the joint component includes at least one elastic tongue that engages with a hole having the same shape and is provided in the swing arm. The swing arm has at least a substantially U-shaped cross section at a connection position with the joint part;
The windscreen wiper device according to claim 1, wherein the hole is installed in a base having a U-shaped cross section. The joint part comprises elastic tongues on at least two sides extending outwardly;
The swing arm has at least a substantially U-shaped cross section at a connection position with the joint part;
3. The windscreen wiper device according to claim 1, wherein each tongue is engaged with a hole having the same shape provided in a leg portion of the U-shaped cross section.   The windscreen wiper device according to any one of claims 1 to 3, wherein the hole has a closed circumference. The swing arm has at least a substantially U-shaped cross section at a connection position with the joint part;
5. Each of the legs of the U-shaped cross section comprises a clamping member that engages around the longitudinal sides of two mutually different joint parts. The windscreen wiper device described in 1.   The windscreen wiper device according to any one of claims 1 to 5, wherein the shaft is rotatably engaged with the joint component.   The windscreen wiper device according to claim 6, wherein the shaft is rotatably engaged with at least one recess having the same shape in the joint part.   The windshield wiper device according to claim 7, wherein the shaft can be snapped to the recess. The shaft can pass through the insertion opening of the recess from the position of the swing arm substantially perpendicular to the swing arm.
The windshield according to claim 7, wherein the windshield is shaped and dimensioned so as to be locked to the position of the recess from a position at least substantially parallel to the swing arm. Wiper device.   10. The windshield according to claim 1, wherein the shaft is formed by two protrusions extending inward or outward on a longitudinal surface of the holder. 10. Wiper device.   The windscreen wiper device according to any one of claims 1 to 10, wherein the shaft is formed by a pin extending from one longitudinal side of the holder to the other longitudinal side.   The windshield wiper device according to any one of claims 1 to 11, wherein the joint component is manufactured from a resin.