JPH11124011A - Wiper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a wiper that can reduce the impact sound when a wiper blade is reversed. SOLUTION: In this wiper, a windshield glass is attached to a lapping portion 124 using an adhesive 112 that is elastically deformable, and the reverse position of a wiper blade 66 is set in a position opposite the adhesive 112 via the windshield glass 48. With this arrangement, when vibration of an impact noise that occurs when the wiper blade 66 is reversed and blade rubber 90 hits the windshield glass 48 advances to the inside of the adhesive 112, the adhesive 112 is elastically deformed, absorbing the vibration. As a result, the impact noise is effectively reduced to a great extent.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiper device for wiping a surface to be wiped such as a windshield glass of a vehicle.

[0002]

2. Description of the Related Art A wiper device for wiping raindrops or the like on a windshield glass surface of a vehicle has a blade rubber formed of rubber or synthetic resin material and having a substantially bowed rubber shape for wiping substantially the windshield glass surface. A wiper blade supported by a plurality of levers is provided. The wiper blade is fixed to a pivot shaft provided in a portion of the windshield glass surface near the lower end of the vehicle, and is attached to a tip of a wiper arm that reciprocates around the pivot shaft as the pivot shaft reciprocates. Have been.

[0003] The wiper arm is provided with a biasing means such as a tension coil spring for biasing the wiper arm toward the windshield glass surface, and the biasing force of the biasing means is received by the wiper blade via the wiper arm so that the blade is rotated. The rubber is pressed against the windshield glass surface, and the pivot shaft reciprocates in this state,
The lip portion of the blade rubber (the end on the windshield glass surface side) wipes raindrops and the like on the windshield glass surface.

[0004]

By the way, when the blade rubber moves on the windshield glass surface,
The lip portion of the blade rubber falls down so as to flutter toward the direction opposite to the traveling direction of the blade rubber due to friction with the windshield glass surface, and when the reciprocal rotation is reversed (that is, from the forward movement to the backward movement and from the backward movement to the backward movement). When the wiping direction is changed to the movement, the lip portion rises up against the urging force of the urging means described above, and falls down in the direction opposite to the wiping direction immediately after the start of the movement after the reversal. When the lip rises and falls down again, the blade rubber hits the windshield glass surface by the urging force of the urging means described above to generate a striking sound.

[0005] In particular, in the case of a windshield glass which forms a closed space such as a vehicle, the impact sound reverberates in the passenger compartment, causing occupants to feel uncomfortable.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a wiper device capable of reducing the impact sound when the wiper blade is turned over in consideration of the above fact.

[0007]

According to a first aspect of the present invention, there is provided a wiper device provided with a support for supporting an outer peripheral portion of a body to be wiped and an inner portion of the body to be wiped, and abutting against the body to be wiped. A vibration absorbing member that supports the object to be wiped from the support side and absorbs vibration transmitted through the object to be wiped by elastic deformation, and a wiping object on the opposite side of the object to be wiped from the support body. A wiper blade set at a position facing at least one of the reversal positions in the reciprocal movement and the vibration absorbing member via the wiped body, while reciprocating on the surface to wipe the wiping surface. Have.

According to the wiper device having the above-described structure, the present wiper device includes the vibration absorbing member. The vibration absorbing member is provided on an inner portion of the support on which the outer peripheral portion of the wiping object is directly or indirectly supported, and contacts the wiping object from the support side to support the wiping object.

Further, the vibration absorbing member is elastically deformable, and can be elastically deformed by the vibration transmitted through the wiped body to absorb the vibration. Here, in the present wiper device, at least one of the reversing positions of the reciprocation of the wiper blade is set at a position facing the vibration absorbing member via the wiped object. Therefore, the striking sound generated by the wiper blade hitting the surface to be wiped when the wiper blade reverses is transmitted to the vibration absorbing member via the body to be wiped. Therefore, when the impact sound is transmitted, the vibration absorbing member receives the vibration of the impact sound and elastically deforms to absorb the vibration. Thereby, the impact sound at the time of reversal of the wiper blade can be reduced.

According to a second aspect of the present invention, in the wiper device, a support for supporting an outer peripheral portion of the object to be wiped and an inner portion of the object to be wiped are provided. A vibration absorbing member that supports the body and absorbs the vibration transmitted through the wiped body by elastic deformation;
A wiper blade that moves on a surface to be wiped of the body to be wiped opposite to the support and wipes the surface to be wiped; and the wiper blade is connected to convert a rotational driving force of a driving unit into a reciprocating motion. And a drive mechanism for reciprocating the wiper blade on the surface to be wiped, and setting a reversal position of at least one of the reciprocal movements of the wiper blade to a position facing the vibration absorbing member via the surface to be wiped. , Is provided.

According to the wiper device having the above structure, the rotational driving force of the driving means is converted into reciprocating motion by the driving mechanism.
Thereby, the wiped surface is wiped by the reciprocating movement of the wiper blade on the wiped surface of the wiped body. Also,
The present wiper device includes a vibration absorbing member. The vibration absorbing member is provided on an inner portion of the support on which the outer peripheral portion of the wiping object is directly or indirectly supported, and contacts the wiping object from the support side to support the wiping object.

Further, the vibration absorbing member is elastically deformable, and can be elastically deformed by the vibration transmitted through the wiped body to absorb the vibration. Here, in the present wiper device, the drive mechanism is set such that at least one of the reversal positions of the reciprocation of the wiper blade is located at a position facing the vibration absorbing member via the wiped object. Therefore, the striking sound generated by the wiper blade hitting the surface to be wiped when the wiper blade reverses is transmitted to the vibration absorbing member via the body to be wiped. Therefore, when the impact sound is transmitted, the vibration absorbing member receives the vibration of the impact sound and elastically deforms to absorb the vibration. Thereby, the impact sound at the time of reversal of the wiper blade can be reduced.

According to a third aspect of the present invention, in the wiper apparatus according to the first or second aspect, the vibration absorbing member includes an adhesive for fixing an outer peripheral portion of the wiped object to the support, And dam rubber for preventing the adhesive from leaking inward of the wiped surface.

According to the wiper device having the above configuration, the outer peripheral portion of the wiped object is fixed to the support by the adhesive. The adhesive itself becomes an elastic body by being cured by adhesion, and intervenes between the body to be wiped and the support. Therefore, the adhesive itself necessary for fixing the body to be wiped to the support can be used as the vibration absorbing member without providing the vibration absorbing member as a separate component.
When the wiper blade is turned over, the vibration of the striking sound caused by the wiper blade hitting the wiped surface of the wiped object is absorbed by the elasticity of the adhesive.

When an adhesive having a low viscosity before curing is used, a dam rubber is used to prevent the adhesive from leaking inward of the surface to be wiped. A vibration absorbing member is constituted by the agent and the dam rubber, and the vibration of the hitting sound described above can be absorbed by both the adhesive and the dam rubber.

As described above, the hitting sound when the wiper blade is turned over can be reduced without adding any special parts.

[0017]

FIG. 3 is a perspective view of a vehicle 14 to which a wiper device 10 according to one embodiment of the present invention is applied, and FIG. 3 shows one embodiment of the present invention. FIG. 2 is a plan view schematically illustrating a driving mechanism of the wiper device 10. As shown in FIG. 4, the wiper device 10
And a wiper motor 20 which constitutes a drive mechanism provided on the back side of the cowl panel 16 (see FIG. 1). The output shaft (not shown) of the wiper motor 20 is connected to one end of a crank arm 24 that forms a link mechanism 22 as a drive mechanism together with connecting rods 26 and 34, pivot levers 28 and 36, and pivot shafts 30 and 38, which will be described later. Have been. The other end of the crank arm 24 is fixed to the output shaft of the wiper motor 20, and the crank arm 24 is rotated by the driving force (rotational force) of the wiper motor 20.

One end of a connecting rod 26 is rotatably connected to the other end of the crank arm 24 with respect to the crank arm 24, and the other end of the connecting rod 26 is connected to one end of a pivot lever 28. It is rotatably connected. The other end of the pivot lever 28 is fixed to a pivot shaft 30 that is supported by a pivot holder 29 (see FIG. 1). The driving force of the wiper motor 20 is applied to the pivot lever 28 via the crank arm 24 and the connecting rod 26. Is transmitted to the pivot lever 28 and the pivot shaft 30
By reciprocating around a predetermined angle, the pivot shaft 3
0 is reciprocated by a predetermined angle around its own axis.

Further, one end of a connecting rod 34 is rotatably connected to the pivot lever 28, and one end of a pivot lever 36 is rotatably connected to the other end of the connecting rod 34. The other end of the pivot lever 36 is fixed to a pivot shaft 38 that is supported by a pivot holder (not shown), like the pivot shaft 30, and the pivot lever 28 moves back and forth together with the pivot shaft 30. When moved, the pivot lever 36 reciprocates around the pivot shaft 38 by a predetermined angle via the connecting rod 34, whereby the pivot shaft 38 reciprocates around its own axis. The above-described connection mode of the crank arm 24, the connecting rod 26, the pivot lever 28, the connecting rod 34, the pivot lever 36, and the like (that is, the configuration of the link mechanism 22) is merely an example, and the pivot shafts 30 and 38 are reciprocated. The configuration to be moved is not limited to the configuration of the link mechanism 22 described above.
Other link mechanisms having different connection modes such as a crank arm and a connecting rod may be applied. Further, the drive mechanism is not limited to a mechanism to which the link mechanism 22 is applied.
For example, a configuration in which the driving force of the wiper motor 20 is transmitted to each of the pivot shafts 30 and 38 by a gear such as a sector gear to cause each of the pivot shafts 30 and 38 to reciprocate, or
Independent wiper motor 20 for each pivot shaft 30, 38
May be provided.

As shown in FIG. 4, a wiper arm 42 is connected to each of the pivot shafts 30 and 38. Here, FIG. 5 is a perspective view of the wiper arm 42 on the pivot shaft 30 side and a wiper blade 66 described later. Note that the wiper arm 42 and the wiper blade 66 on the pivot shaft 38 have substantially the same configuration as the wiper arm 42 and the wiper blade 66 on the pivot shaft 30 side, and a description thereof will be omitted.

As shown in FIG. 5, the wiper arm 42
Has an arm head 44. The arm head 44 is formed in a rectangular rod shape extending in the longitudinal direction along the radial direction of the pivot shaft 30, and a hole (not shown) that can be fitted into the pivot shaft 30 is formed at an end on the pivot shaft 30 side. This hole is fitted into the pivot shaft 30 and is fastened and fixed by fastening means such as bolts, so that the arm head 4
4 can be fixed to the pivot shaft 30.

As shown in FIG. 6, a locking pin 4 is provided at the tip of the arm head 44 (in the direction of arrow A in FIG. 6).
6, a tension coil spring provided on the windshield glass 48 side (the direction of the arrow B in FIG. 6; see FIG. 1 and FIG. 2 for the windshield glass 48) as the body to be wiped of the arm head 44. A hook portion 52 formed on one end side of 50 is locked.

The retainer 54 is a windshield glass 4
8 and has a substantially U-shaped cross-section, and as shown in FIG.
The longitudinal direction is along the 0 radial direction. One end of the retainer 54 (the side opposite to the direction of arrow A in FIG. 6) is formed by a rivet 56 penetrating along the width direction of the other end of the arm head 44 (in the direction of arrow A in FIG. 6). It is pivotally connected around the rivet 56.
In addition, a locking pin 58 is stretched between both side walls in the width direction of the retainer 54 at an intermediate portion in the longitudinal direction of the retainer 54, and a hook 60 formed at the other end of the extension coil spring 50 is locked. ing. For this reason, the retainer 54
Is biased around the rivet 56 in the direction of arrow C in FIG. 6 by the biasing force of the extension coil spring 50.

As shown in FIGS. 5 and 6, the other end of the retainer 54 (the end in the direction of arrow A in FIGS. 5 and 6) has a longitudinal direction along the radial direction of the pivot shaft 30. One end of the plate-shaped arm piece 62 (arrow A in FIGS. 5 and 6)
The end opposite to the direction is fixed by rivets or other fixing means (not shown). This arm piece 62
Has a hook portion 64 curved in a substantially U-shape toward the wiper blade 66 side, and the wiper blade 66 is locked to the hook portion 64.

The wiper blade 66 has a plurality of levers such as a primary lever 68, a secondary lever 70, and a yoke lever 72. These levers have a primary lever 68 as the uppermost layer and a secondary lever 70 and a yoke lever 72 connected in a tournament manner.
That is, the wiper blade 66 constitutes a so-called tournament type wiper blade.

As shown in FIG. 1, the primary lever 68 has a U-shaped cross section opened toward the surface of the windshield glass 48, and as shown in FIG. Has a substantially rectangular opening 76 formed therein. On both sides in the width direction of the opening 76, the vertical wall portions 78 of the primary lever 68 extend in the direction opposite to the windshield glass 48 (the direction opposite to the arrow B in FIG. 5). A clip (not shown) is arranged between the first and second levers 78, and the rivet 80 penetrates the vertical wall portion 78 and the rivet 8 is attached to the primary lever 68.
It is connected so that it can rotate around zero. The hook 64 of the arm piece 62 described above is locked to this clip,
As a result, the wiper arm 42 and the wiper blade 66 are connected.

As shown in FIG. 5, at both ends in the longitudinal direction of the primary lever 68, a secondary lever 7 is provided.
0, the middle part in the longitudinal direction enters between the vertical wall parts 78,
The rivet 82 penetrating the vertical wall portion 78 connects the secondary lever 70 to the primary lever 68 so as to be rotatable around the rivet 82. This secondary lever 7
The reference numeral 0 also has a U-shaped cross section opened toward the windshield glass 48 side similarly to the primary lever 68. At both ends of the secondary lever 70 in the longitudinal direction, the middle part of the yoke lever 72 in the longitudinal direction is
Of the rivet 8 by the rivet 86 penetrating through the vertical wall portion 84 of the rivet 8.
It is connected to the secondary lever 70 so as to be rotatable around 6. Claw-shaped holding portions 88 are formed at both ends in the longitudinal direction of each yoke lever 72, and hold the blade rubber 90.

As shown in FIG. 1, the blade rubber 9
Numeral 0 is formed of a rubber material or a synthetic resin material, and is elongated along the longitudinal direction of each lever such as the primary lever 68 described above. The blade rubber 90 has a main body 92 having a rectangular cross section and is partially locked by the holding portion 88 of the yoke lever 72 described above, and is held by another holding portion so as to be movable without falling out along the longitudinal direction thereof. Is held. The main body 92 is arranged along the longitudinal direction on the windshield glass 48 side of the main body 92.
A neck portion 94 having a width smaller than 2 is formed. Further, a tapered lip portion 96 is formed on the windshield glass 48 side of the neck portion 94 along the longitudinal direction of the main body 92. Retainer 54, arm piece 62, primary lever 68, secondary lever 70, and yoke lever 7
When the wiper arm 42 reciprocates around the pivot shaft 30 in this state, the biasing force of the tension coil spring 50 acts on the blade rubber 90 via the blade 2 and the lip 96 is pressed against the windshield glass 48. 96 moves while being in contact with the surface of the windshield glass 48 and wipes the surface of the windshield glass 48.

Grooves 98 are formed at both ends in the width direction of the main body 92 along the longitudinal direction thereof, and a metal backing plate 100 in the form of a flat metal plate is fitted to reinforce the blade rubber 90. On both sides in the width direction between the groove 98 and the neck portion 94 of the main body 92, a groove 102 and a locking hole (not shown) are formed along the longitudinal direction, respectively. A part of the holding portions 88 are engaged with the claws at the distal end thereof, and the other retaining portions 88 have the claws at the distal end in the grooves 102. Thus, the blade rubber 90 does not fall out along the longitudinal direction of the wiper blade 66, and is held movably with respect to the yoke lever 72 and the like by detaching the holding portion 88 from the above-described locking hole. .

Further, as shown in FIGS. 1 and 2,
The present wiper device 10 includes a vibration absorbing member 112, unlike a conventional wiper device. Here, before describing the configuration of the vibration absorbing member 112, a structure for attaching the windshield glass 48 to the vehicle 14 will be briefly described.

As shown in FIGS. 3 and 4, the windshield glass 48 is attached to the roof panel 116 of the vehicle 14.
The windshield glass 48 is disposed at a portion surrounded by a pair of left and right front pillars 118 and the cowl panel 16 (in other words, the shape of the windshield glass 48 is the roof panel 116 of the vehicle 14, It is formed so as to correspond to a portion surrounded by the pillar 118 and the cowl panel 16).

As shown in FIG. 1, a wrap portion 124 as a support through which the pivot holder 29 passes is provided substantially below the cowl panel 16 (on the side opposite to the arrow UP in FIG. 1). Have been. This wrap part 124
Of the cowl panel 16 extends substantially rearward of the cowl panel 16 (in the direction opposite to the arrow FR in FIG. 1) and substantially upward of the vehicle (in the direction of the arrow UP in FIG. 1). ing. The wrap portion 124 wraps (overlaps) the outer peripheral portion of the windshield glass 48 and a portion inside the outer peripheral portion, and is provided by an adhesive 112 as a vibration absorbing member formed of a synthetic resin material such as polyurethane. The windshield glass 48 is fixed to the wrap portion 124, the adhesive 112 supports the windshield glass 48, and the wrap portion 124 supports the windshield glass 48 via the adhesive 112. This adhesive 11
A dam rubber 128 formed of rubber or a synthetic resin material is fixed to the back surface of the windshield glass 48 at the center side of the windshield glass 48 relative to 2.
The adhesive 112 is prevented from leaking substantially in the vertical direction of the vehicle along the slope of the windshield glass 48.

In the present embodiment, the windshield glass 48 is colored opaque, such as black, corresponding to the wrap portion between the windshield glass 48 and the wrap portion 124. 112, dam rubber 128, etc. are made invisible to improve the appearance. As a configuration for hiding the adhesive 112, the dam rubber 128, and the like and improving the appearance, as described above, in addition to coloring the windshield glass 48, for example, an opaque film or the like may be used. It may be attached to the windshield glass 48 corresponding to the wrap portion of the shield glass 48 and the wrap portion 124.

On the other hand, as shown in FIG. 2, a flat wrap portion 125 as a support is formed on the front pillar 118 on the right side of the vehicle. The wrap portion 125 wraps (overlaps) with the outer peripheral portion of the windshield glass 48 and a portion inside the outer peripheral portion, and is provided with an adhesive 112 as a vibration absorbing member formed of a synthetic resin material such as polyurethane. The outer peripheral portion of the windshield glass 48 is fixed to the wrap portion 124 and the adhesive 11
2 supports the windshield glass 48, and the wrap 125 supports the windshield glass 48 via the adhesive 112. A dam rubber 128 formed of rubber or a synthetic resin material is fixed to the rear surface of the windshield glass 48 at a position closer to the center of the windshield glass 48 than the adhesive 112.
Twelve windshield glasses 48 are prevented from leaking substantially in the vehicle width direction along the slope.

In the present embodiment, the windshield glass 48 is colored in an opaque color such as black so as to correspond to the wrap portion between the windshield glass 48 and the wrap portion 125. 112, dam rubber 128, etc. are made invisible to improve the appearance. As a configuration for hiding the adhesive 112, the dam rubber 128, and the like and improving the appearance, as described above, in addition to coloring the windshield glass 48, for example, an opaque film or the like may be used. It may be attached to the windshield glass 48 corresponding to the wrap portion of the shield glass 48 and the wrap portion 125.

The above-described dam rubber 12 on the pillar side is used.
8 and the adhesive 112 may be continuous with the dam rubber 128 and the adhesive 112 on the cowl panel 16 side, or may be independent.

Further, as shown in FIG. 2, a window molding 130 extending longitudinally along the outer peripheral end of the windshield glass 48 is provided on the windshield glass 48 and the outer peripheral end. The gap between the outer peripheral end of the shield glass 48 and the front pillar 118 is sealed.

The above-described adhesive 112 has a thickness approximately equal to the height of the dam rubber 128, and in this state, the windshield glass 48 is
5 is fixed. Further, the adhesive 112 is elastically deformable in a state where the windshield glass 48 is fixed to the wrap portions 124 and 125. When vibration is transmitted from the outside, the adhesive 112 is elastically deformed and can absorb the energy of the vibration. It has become.

In the present embodiment, the above-described wiper blade 66 is connected to the pivot shaft 30 or the pivot shaft 3.
8 and reciprocate around the lip 9 of the blade rubber 90.
Reference numeral 6 denotes a configuration for wiping the surface of the windshield glass 48. Both wiper blades 6 shown in FIGS.
6 and relatively to the left side of the vehicle (arrows R in FIGS. 3 and 4).
The wiper blade 66 on the side opposite to the T direction has a lower reversing position (reversing direction change position of reciprocating movement on the cowl panel 16 side) of the dam rubber 128 on the cowl panel 16 side via the windshield glass 48. The reciprocating rotation angle of the pivot shaft 30 is set so as to face (ie, the dam rubber 128 shown in FIG. 1). The wiper blade 66 on the substantially right side of the vehicle (in the direction of the arrow RT in FIG. 3) has a windshield whose reversal upper turning position (reversal direction change position of reciprocation on the front pillar 118 side) is a windshield. The glass 48 faces the dam rubber 128 (ie, the dam rubber 128 shown in FIG. 2) on the front pillar 118 on the relatively right side of the vehicle, and the lower turning position is opposite to the other wiper blade 66 (ie, the relative Like the wiper blade 66) substantially on the left side of the vehicle, the front pillar 11 is interposed through the windshield glass 48.
Pivot shaft 3 so as to face the dam rubber 128 on the eighth side.
8 (i.e., the crank arm 24, the connecting rod 26, and the pivot levers constituting the link mechanism 22 such that the upper reversing position and the lower reversing position of each wiper blade 66 are at the above-described positions). 28, the length of the pivot lever 32, the connecting rod 34, and the pivot lever 36 are set).

Next, the operation and effect of this embodiment will be described. In the present wiper device 10, the wiper motor 20
When the driving force is transmitted to the pivot lever 28 via the crank arm 24 and the connecting rod 26, the pivot lever 28 reciprocates around the pivot shaft 30 by a predetermined angle, and is integrated with the pivot lever 28. The pivot shaft 30 reciprocates a predetermined angle around its own axis. Further, when the pivot lever 28 reciprocates integrally and the reciprocating rotation of the pivot lever 32 is transmitted to the pivot lever 36 via the connecting rod 34, the pivot lever 3
6 reciprocates around the pivot shaft 38 by a predetermined angle, and the pivot shaft 38 integrated with the pivot lever 36 reciprocates by a predetermined angle around its own axis. Each of the pivot shafts 30 and 38 is reciprocally rotated so that each pivot shaft 3
Arm head 44 (wiper arm 42) mounted on the pivot shaft 30 or the pivot shaft 38.
The wiper blade 66 is reciprocated around by a predetermined angle, and is attached to the arm piece 62 (wiper arm 42).
Reciprocates on the surface of the windshield glass 48. Thus, the lip 96 of the blade rubber 90 that is in contact with the windshield glass 48 wipes the surface of the windshield glass 48.

By the way, as shown in FIG. 5, the retainer 54 of the wiper arm 42 is
Is biased toward the windshield glass 48 by the lip portion 9 of the blade rubber 90.
6 is pressed against the windshield glass 48. This pressing force (that is, the tension coil spring 50)
When the wiper blade 66 reciprocates on the windshield glass 48, the lip portion 96 falls down so that the tip side of the lip portion 96 is bent in the direction opposite to the traveling direction. In this state, the pivot shaft 30 and the pivot shaft 38 change their rotation directions from the forward movement to the backward movement or from the backward movement to the forward movement, and
When the rotation direction is reversed, the tip side of the lip portion 96 falls along with the reversal so as to flutter in the direction opposite to the new traveling direction. When the falling direction of the lip portion 96 is reversed, the lip portion 96 once rises up against the urging force of the extension coil spring 50. Then
After standing up, it falls down again by the urging force of the tension coil spring 50, and at this time, the blade rubber 9
0 hits the windshield glass 48.

Here, in the present embodiment, the windshield glass 48 is adhered to the wrap portions 124 and 125, and the adhesive 112 that can be elastically deformed even in the adhered state is one of the components of the wiper device 10 as a vibration absorbing member. The respective wiper blades 66 constitute the above-described link mechanism 22 such that the blade rubber 90 (the wiper blade 66) faces the wrap portion 124 via the windshield glass 48 at the lower turning position. (That is,
The length and the like of the crank arm 24, connecting rods 26 and 34, pivot levers 28 and 36, pivot shafts 30 and 38) are set. Therefore, the wiper blade 66 is inverted at the lower inversion position, and the blade rubber 90 hits the windshield glass 48. The vibration at this time is transmitted to the adhesive 112 for fixing the windshield glass 48 to the wrap portion 124, and the vibration is transmitted. When the inside of the adhesive 112 advances, the adhesive 112 elastically deforms and absorbs vibration.
For this reason, the generation of an impact sound caused by the blade rubber 90 hitting the windshield glass 48 at the lower turning position can be extremely effectively reduced.

Further, the wiper blade 66 on the substantially right side of the vehicle is positioned such that the blade rubber 90 (wiper blade 66) faces the wrap portion 125 of the front pillar 118 via the windshield glass 48 at the upper turning position. The length of each member constituting the link mechanism 22 described above is set. Therefore, the wiper blade 66 is inverted at the upper inversion position, and the blade rubber 90 hits the windshield glass 48. The vibration at this time is transmitted to the adhesive 112 for fixing the windshield glass 48 to the wrap portion 125, and the vibration is bonded. When the inside of the agent 112 advances, the adhesive 112 elastically deforms and absorbs vibration. For this reason, the striking sound generated when the blade rubber 90 of the wiper blade 66 relatively on the right side of the vehicle hits the windshield glass 48 at the upper turning position can be reduced extremely effectively.

As described above, according to the present wiper device 10, the striking sound when the wiper blade 66 is reversed can be reduced extremely effectively.
4 can improve the quiet performance.

In addition, in this wiper device,
The position facing the adhesive 112 is the reverse position of the wiper blade 66. Here, as described above, the adhesive 1
The windshield 48 is colored in an opaque color such as black at a portion facing the rubber 12 and the dam rubber 128 (that is, a portion overlapping with the wrap portions 124 and 125).
The adhesive 112, the dam rubber 128, and the like are not visible from the outside of the vehicle 14, thereby improving the appearance. In other words, the wiper blade 66 cannot be visually recognized by the occupant at the lower inverted position, and the wiper blade 66 on the relatively right side cannot be visually recognized by the occupant also at the upper inverted position. As described above, since the lip portion 96 of the blade rubber 90 wipes the windshield glass 48 to a position where the occupant cannot see it, there is no wiping left in a range that the occupant can see, and a clear view is sufficiently provided. Can be secured.

In this embodiment, the adhesive 112 and the dam rubber 128 are used as the vibration absorbing member. However, the dam rubber 128 is eliminated by using the adhesive 112 having high viscosity and hard to flow. Alternatively, the vibration absorbing member may be constituted only by the adhesive 112. Further, as shown in FIG. 7, a vibration absorbing member 132 may be provided separately from the adhesive 112 and the dam rubber 128.

In this embodiment, the wiper blade 66 has two reversal positions, an upper reversal position and a lower reversal position. However, for example, one wiper blade is connected to the pivot shaft substantially on the right side of the vehicle. Alternatively, in the case of a wiper device of a type in which the surface of the windshield glass is wiped by rotating about 180 ° around the pivot axis from the substantially vehicle left side, at least the substantially vehicle right side and the substantially vehicle left side The wiper blade (blade rubber) and the dam rubber or the vibration absorbing member may be set so as to face each other via the windshield glass at one reversing position. With such a configuration, substantially the same effects as those described above can be obtained.

[Brief description of the drawings]

1 is a cross-sectional view of a wiper device according to an embodiment of the present invention, which is a cross-sectional view of a portion near a cowl panel taken along line 1-1 in FIG.

2 is a cross-sectional view of the wiper device according to one embodiment of the present invention, which is a cross-sectional view of a portion near a front pillar taken along line 2-2 of FIG.

FIG. 3 is a perspective view of a vehicle to which the wiper device according to one embodiment of the present invention is applied.

FIG. 4 is a schematic view of a drive mechanism of the wiper device according to one embodiment of the present invention.

FIG. 5 is a perspective view of a wiper arm and a wiper blade.

FIG. 6 is a sectional view of the wiper arm taken along line 6-6 in FIG. 5;

FIG. 7 is a sectional view corresponding to FIG. 2 and showing a modification of the wiper device according to one embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Wiper device 22 Link mechanism (drive mechanism) 48 Windshield glass (wiping object) 66 Wiper blade 112 Adhesive (vibration absorbing member) 124 Lapping part (support) 125 Lapping part (support) 128 Dam rubber (vibration absorbing member) ) 132 Vibration absorbing member

Claims (3)

[Claims] A supporting member that supports an outer peripheral portion of the object to be wiped, and is provided on an inner portion of the object to be wiped, abuts on the object to be wiped, and supports the object to be wiped from the support side. A vibration absorbing member that absorbs the vibration transmitted through the wiping object by elastic deformation, and reciprocates on the wiping surface opposite to the support of the wiping object to wipe the wiping surface. And a wiper blade having at least one of the reversing positions in the reciprocating movement set at a position facing the vibration absorbing member via the wiped object. A support for supporting an outer peripheral portion of the body to be wiped; a support provided on an inner portion of the body to be wiped, supporting the body to be wiped from the support side by contacting the body to be wiped;
A vibration absorbing member that absorbs the vibration transmitted through the wiping object by elastic deformation, and moves on the wiping surface opposite to the support of the wiping object to wipe the wiping surface. A wiper blade, wherein the wiper blade is connected, the rotational driving force of a driving unit is converted into reciprocating motion to reciprocate the wiper blade on the surface to be wiped, and at least one reversal position of the reciprocating motion of the wiper blade. A drive mechanism for setting a position at which the vibration-absorbing member is opposed to the vibration-absorbing member via the surface to be wiped. 3. The vibration absorbing member comprises: an adhesive for fixing an outer peripheral portion of the body to be wiped to the support; and a dam rubber for preventing the adhesive from leaking inward of the surface to be wiped. The wiper device according to claim 1, wherein the wiper device includes any one of the wiper devices.