CN101104401B

CN101104401B - Wiper system

Info

Publication number: CN101104401B
Application number: CN2007101279708A
Authority: CN
Inventors: 长谷川贵士
Original assignee: Asmo Co Ltd
Current assignee: Asmo Co Ltd
Priority date: 2006-07-10
Filing date: 2007-07-06
Publication date: 2010-12-01
Anticipated expiration: 2027-07-06
Also published as: CN101104401A; JP4598726B2; JP2008013156A

Abstract

Wiper blades are connected to wiper arms, respectively, to wipe a wiping surface of a vehicle front window glass. One of the wiper arms includes a cover portion, which at least partially covers at least one of the other wiper arm and the wiper blade connected thereto to continuously arrange the wiper arms one after the other along a lower edge of the wiping surface when each of the wiper blades is placed in a corresponding storage position thereof.

Description

Wiper system

Technical field

The present invention relates to a kind of Wiper system.

Background technology

In the Wiper system of known type, for example, two Wiper blades are the wipe surfaces of wiping vehicle front screen reciprocally.When each Wiper blade was placed on their swing turned position (being designated hereinafter simply as " turned position "), Wiper blade was arranged to form superimposed part so that the lap of Wiper blade overlaps each other parallel to each other.Particularly, in opposed type Wiper system (opposed patternwiper system), two Wiper arms (more specifically, being Wiper arm and the Wiper blade that is connected thereto) reciprocally swing in the opposite direction respectively is so that the wiping wipe surfaces.Therefore, a rotational position, Wiper blade is arranged to parallel to each other and forms vertical superimposed part.

When above-mentioned Wiper system is disposed in the bottom of vehicle front screen, the lap of two Wiper blades overlaps each other so that form superimposed part in rotational position, and Wiper blade may be interfered mutually when the beginning wiping motion or in the bottom rotated position time.In order to limit this interference, need between the rotational position Wiper blade of bottom, be provided with at interval.When stopping wiping motion or carrying out wiping, this causes adverse effect may for the outward appearance of vehicle

For above-mentioned shortcoming is described, Japanese Patent No.2888651 proposes the opposed type Wiper system, and it makes in two Wiper blades one rotate at a distance of the position of preset distance up at the bottom turned position with another Wiper blade.Then, when stopping Wiper blade, one in the Wiper blade is pivoted to stop position, and this stop position is set at around another the bottom turned position in the Wiper blade.

That is, one stop position in the Wiper blade is positioned at below its turned position.When stopping wiping motion, only in the Wiper blade further pivots so that make it near another storage in the Wiper blade downwards.The outward appearance of the Wiper system when like this, stopping wiping motion being improved.

Further, in above-mentioned Wiper system, in beginning during wiping motion, when in the Wiper blade another still remains on the bottom turned position, be arranged in of Wiper blade on another and move to the bottom turned position from stop position.Like this, on the wiping direction, just providing significant clearance space between two Wiper blades, afterwards, the wiping motion of beginning Wiper blade.Like this, even, also can begin the wiping motion of Wiper blade when forming superimposed part at turned position or stop position, and no any remarkable interference between Wiper blade.

Yet, in the disclosed Wiper system of Japanese Patent No.2888651, although two Wiper blades are placed close mutually when wiping motion stops, Wiper blade on the Width of Wiper blade still one then another ground arrange to form superimposed part.Therefore, Wiper arm (Wiper arm and Wiper blade) is still very showy, still needs to improve its outward appearance.

Further, Japanese unexamined patent publication No.H11-43019 (corresponding to U.S. Patent No. 6,038,728) discloses a kind of tandem Wiper system of wiping vehicle front screen, this Wiper system comprises two rain brush, and each rain brush has common wiping direction.Usually, in this tandem Wiper system, the Wiper blade of each rain brush stops at the bottom turned position (being that Wiper blade is placed with the position that is roughly parallel to the lateral direction of car extension) of its reciprocal wiping motion or stops at the storage location, and the storage location is arranged on the bottom of front screen independently and is positioned at the below of bottom turned position.

Yet under the halted state of above-mentioned Wiper system, can clearly recognize rain brush is the rain brush that separates, and makes the people think that rain brush is not a single-piece, thereby very showy.Therefore, the outward appearance of this part that rain brush is set of vehicle is worsened and is reduced.

Summary of the invention

The present invention is in view of the above-mentioned shortcoming of prior art.Therefore, an object of the present invention is to provide a kind of Wiper system that the outward appearance of Wiper blade is improved when Wiper blade stops wiping motion.

In order to realize above-mentioned purpose of the present invention, a kind of Wiper system is provided, this Wiper system comprises: first and second Wiper arms and first and second Wiper blades.First and second Wiper blades are connected respectively to first and second Wiper arms so that the wiping wipe surfaces.First Wiper arm comprises the lid part, when in first and second Wiper blades each is placed on its cooresponding stop position, the lid part cover at least in part in second Wiper arm and second Wiper blade at least one arrange first and second Wiper arms continuously so that connect another ground along one of the lower edge of wipe surfaces.

In order to realize purpose of the present invention, a kind of Wiper system also is provided, this this Wiper system comprises: first and second Wiper arms, first and second Wiper blades and at least one travel mechanism.First and second Wiper arms are connected respectively to first and second pivotal axis, and reciprocally swing on relative direction respectively.First and second Wiper blades are connected respectively to the end portion of first and second Wiper arms, so that reciprocally wiping wipe surfaces.At least one travel mechanism drive at least one in first and second Wiper arms in case make in first and second Wiper arms at least one roughly motion of translation the corresponding Wiper blade that is connected thereto is moved between the stop position of the swing turned position of cooresponding Wiper blade and cooresponding Wiper blade.Therefore the stop position of cooresponding Wiper blade keeps apart with the wiping scope of cooresponding Wiper blade in the outside of the turned position of cooresponding Wiper blade.

Description of drawings

Can understand the present invention and other purpose of the present invention, feature and advantage better according to following explanation, claims and accompanying drawing, accompanying drawing is as follows:

Fig. 1 is the scheme drawing that shows the Wiper system of first embodiment of the invention, and wherein Wiper blade remains on their cooresponding top turned positions respectively;

Fig. 2 is the scheme drawing of the Wiper system of displayed map 1, and wherein Wiper blade remains on their bottom turned position respectively;

Fig. 3 is the scheme drawing of the Wiper system of displayed map 1 and Fig. 2, and wherein Wiper blade remains on their storage location respectively;

Fig. 4 is the electrical connection graph of Wiper system shown in Figure 1;

Fig. 5 A is the instruction diagram that shows Wiper arm, Wiper blade and lid in two rain brush mechanisms of Wiper system shown in Figure 1;

Fig. 5 B is another the instruction diagram of Wiper arm, Wiper blade and lid that shows in two rain brush mechanisms of Wiper system shown in Figure 1;

Fig. 6 A is the instruction diagram that shows Wiper arm, Wiper blade and the lid of the bottom rotational position that is positioned at first embodiment;

Fig. 6 B is the instruction diagram that shows Wiper arm, Wiper blade and the lid at the place, storage location that is positioned at first embodiment;

Fig. 7 is the cutaway view along Fig. 6 BVII-VII line;

Fig. 8 is the block diagram of the travel mechanism of Wiper system shown in Figure 1;

Fig. 9 A-9C is the instruction diagram of various serviceability that shows the travel mechanism of Wiper system shown in Figure 1;

Figure 10 A is the instruction diagram of variation that shows the Wiper system of first embodiment;

Figure 10 B is the instruction diagram of variation that shows the Wiper system of Figure 10 A be positioned over the storage location;

Figure 11 A is the instruction diagram of another variation that shows the Wiper system of first embodiment be positioned over the bottom turned position;

Figure 11 B is the instruction diagram of variation that shows the Wiper system of Figure 11 A be positioned over the storage location;

Figure 12 A-12C shows the Wiper system of second embodiment and the instruction diagram of variation thereof;

Figure 13 is the scheme drawing that shows the Wiper system of the 3rd embodiment, and wherein Wiper blade remains on their top turned position respectively;

Figure 14 is the scheme drawing that shows the Wiper system of Figure 13, and wherein Wiper blade remains on their bottom turned position respectively;

Figure 15 is the scheme drawing that shows the Wiper system of Figure 13, and wherein Wiper blade remains on their storage location respectively;

Figure 16 is the scheme drawing of electric structure that shows the Wiper system of Figure 13;

Figure 17 A is the instruction diagram that shows the Wiper system of the 4th embodiment, and wherein Wiper blade remains on their top turned position respectively;

Figure 17 B is the instruction diagram of the Wiper system of displayed map 17A, and wherein Wiper blade remains on their storage location respectively;

Figure 18 A is the scheme drawing that shows the Wiper system of the 5th embodiment, and wherein Wiper blade remains on their bottom turned position respectively;

Figure 18 B is the scheme drawing of the Wiper system of displayed map 18A, and wherein Wiper blade remains on their storage location respectively;

Figure 19 A is the local amplification plan view that shows superimposed part, overlaps each other in the storage location at this superimposed part rain brush; With

Figure 19 B is the local enlarged side view of the superimposed part of displayed map 19A from its cross side.

The specific embodiment

(first embodiment)

1-9C illustrates the first embodiment of the present invention below with reference to the accompanying drawings.

As Figure 1-3, Wiper system W of the present invention is a kind of opposed type Wiper system, be used for the reciprocally wipe surfaces 1a of the front screen 1 of wiping vehicle (being designated hereinafter simply as glass 1), and Wiper system W of the present invention comprises two W1 of rain brush mechanism, W2.The W1 of rain brush mechanism, W2 arrange at the transversely adjoining land of vehicle, represent with four-headed arrow T in Fig. 1-3.

The W1 of rain brush mechanism comprises Wiper motor 10, Wiper arm 20, Wiper blade 30 and lid (also being known as the lid part) 40.Wiper motor 10 is installed in the lower right corner of glass 1, and it is configured to rectangle roughly.Wiper arm 20 is fixed to the cardinal extremity part of Wiper motor 10.Wiper blade 30 is rotationally coupled to the end portion of Wiper arm 20.Lid 40 covers the top surface side (side opposite with wipe surfaces) of Wiper arm 20 and the top surface side of Wiper blade 30.

The W2 of rain brush mechanism comprises Wiper motor 50, Wiper arm 60, Wiper blade 70 and lid (also being known as the lid part) 80.Wiper motor 50 is installed in the lower left corner of glass 1.Wiper arm 60 is fixed to the cardinal extremity part of Wiper motor 50.Wiper blade 70 is rotationally coupled to the end portion of Wiper arm 60.Lid 80 covers the top surface side (side opposite with wipe surfaces) of Wiper arm 60 and the top surface side of Wiper blade 70.

The W1 of rain brush mechanism, W2 are configured to

Wiper blade

30,70 difference wipings wiping scope P1, P2 shown in Figure 1.Wiping scope P1 has roughly fan shape, and it is limited between bottom swing turned position (being designated hereinafter simply as " bottom turned position ") P1a and top swing turned position (being designated hereinafter simply as " top the turned position ") P1b circumferentially.Wiping scope P2 has roughly fan shape, and it is limited between bottom swing turned position P2a and the top swing turned position P2b circumferentially.Fig. 1 shows that the W1 of rain brush mechanism, W2 are driven to the state of top turned position P1b, P2b respectively.Fig. 2 shows that the W1 of rain brush mechanism, W2 are driven to another state of bottom turned position P1a, P2a respectively.

Because the Wiper system W of present embodiment is the opposed type Wiper system, so rotation direction and Wiper arm 60 the direction of rotation from bottom turned position P2a to top turned position P2b of Wiper arm 20 from bottom turned position P1a to top turned position P1b.

In the present embodiment, turned position P1a in bottom is set on the turned position P2a of bottom at (in the vertical direction) on the vehicle-height direction.When

Wiper arm

20,60 turned to position near the lower edge of glass 1, Wiper arm 20 was placed in upside (wiping scope inboard), and Wiper arm 60 places downside (the wiping scope outside or wipe surfaces edge side).Therefore, in the zone of bottom turned position P1a, P2a, from bottom turned position P1a, P2a when top turned position P1b, P2b move, Wiper blade 30 is before rain brush 70.On the contrary, in the same area of bottom turned position P1a, P2a, from top turned position P1b, P2b when bottom turned position P1a, P2a move, Wiper blade 70 is before rain brush 30.

As mentioned above, according to present embodiment, bottom turned position P1a be configured to bottom turned position P2a on the wiping direction at a distance of preset space length.Therefore, when crank motion, can cause the wiping time migration, also can prevent the interference between Wiper blade 30 and the Wiper blade 70 even the W1 of rain brush mechanism, W2 are applied external loading.

Fig. 3 shows that Wiper system W is arranged on the state of storage location (stop position).In the W2 of rain brush mechanism of present embodiment, bottom turned position P2a be exactly storage location (stop position) P2c (=P2a).In the W1 of rain brush mechanism, storage location (stop position) P1c is positioned on the outside, bottom of below, wiping scope P1 of bottom turned position P1a.Although storage location P1c is positioned on the P2c of storage location a little, probably be the width extent of Wiper blade 30, basic consistent with storage location P2c.Therefore, will illustrate as following, when store status (halted state),

Wiper blade

30,70 has vertically superimposed R (i.e. zone, the lap of

rain brush

30,70 is vertically overlapped along it in this zone), and be arranged to along it vertically roughly parallel to each other, i.e. the direction from the top to the bottom among Fig. 6 A and Fig. 6 B.The W1 of rain brush mechanism comprises travel mechanism 100, will illustrate after a while.Travel mechanism 100 makes the Wiper arm 20 that is connected thereto and Wiper blade 30 mechanism of motion of translation roughly between storage location P1c and bottom turned position P1a.

The Wiper motor 10 of present embodiment comprises electric motor units 11 and gear unit 12.Electric motor units 11 comprises DC motor.Gear unit 12 reduces the output speed of electric motor units 11 and the rotating speed that lowers is delivered to pivotal axis 13.The output shaft that pivotal axis 13 can form Wiper motor 10 maybe can be independent of the output shaft setting of Wiper motor 10.Wiper motor 50 comprises electric motor units 51 and gear unit 52.Electric motor units 51 comprises DC motor.Gear unit 52 reduces the output speed of electric motor units 51 and the rotating speed that lowers is delivered to pivotal axis 53.The output shaft that pivotal axis 53 can form Wiper motor 50 maybe can be independent of the output shaft setting of Wiper motor 50.

As shown in Figure 4,

Wiper motor

10,50 is configured to receive drive signal based on slave controller 90 and turns round independently.Controller 90 is connected to rain brush switch 91 and position transduser 14,15, and position transduser 14,15 is arranged in the electric motor units 11,51.Each position transduser 14,15 is formed the Magnetic Sensor on the armature that is set to corresponding

electric motor units

11,51, and sends position signal (impulse singla) to controller 90 according to the rotation of armature.Controller 90 calculates aforementioned impulse singla so that detect the rotating speed of armature and the rotational angle (that is the rotational angle of corresponding Wiper arm 20,60) of corresponding

pivotal axis

13,53.

When controller 90 received operation signal from rain brush switch 91, controller 90 was controlled

Wiper motor

10,50 simultaneously.Promptly, controller 90 output drive signals give

Wiper motor

10,50 so that Wiper motor is being rotated forward and on the rotation direction backward, therefore reciprocally rotate

pivotal axis

13,53, make

Wiper arm

20,60 with the reciprocally swing in cooresponding wiping scope of its cooresponding velocity of rotation.

In the present embodiment, Wiper motor 10 is connected to Wiper arm 20 by travel mechanism 100.On the contrary, the pivotal axis 53 of Wiper motor 50 is directly connected to the cardinal extremity part of Wiper arm 60.

Shown in Fig. 5 A, the Wiper arm 20 of present embodiment comprises arm head 21, retainer 23 and arm spare 25.Retainer 23 is rotationally coupled to arm head 21 by connecting pin 22.Arm spare 25 is fixed to the end portion of retainer 23.Shown in Fig. 5 B, the Wiper arm 60 of present embodiment comprises arm head 61, retainer 63 and arm spare 65.Retainer 63 is rotationally coupled to arm head 61 by connecting pin 62.Arm spare 65 is fixed to the end portion of retainer 63.

Each Wiper blade the 30, the 70th, contest formula Wiper blade.Crotch 26,66 is formed on the end of arm spare 25,65, and

crotch

26,66 engages with the connecting device (not shown) that is installed to connecting

31,71, makes Wiper

arm

30,70 be rotationally coupled to

Wiper arm

20,60.

Next,

lid

40,80 will be described.

The lid 40 of present embodiment partly covers the top surface of Wiper arm 20 and the top surface of Wiper blade 30.Lid 80 partly covers the top surface of Wiper arm 60 and the top surface of Wiper blade 70.Here, top surface is meant the opposed surface of the glass-side surfaces that (with the wipe surfaces opposite surfaces) and glass 1 are relative.In the present embodiment,

lid

40,80 integrally extends from the end portion of

retainer

23,63, and

retainer

23,63 has roughly boot-shaped section, has lower openings at this boot-

shaped section.Lid

40,80 descends towards its

end side.Lid

40,80 covers the top surface of

Wiper arm

20,60 and

Wiper blade

30,70, simultaneously arm spare 25,65 is held wherein.Here,

lid

40,80 can be independent of

retainer

23,63 and form, and can be installed on the Wiper arm 20,60.Replacedly,

lid

40,80 can be configured to be installed on the Wiper

blade

30,70.

Fig. 6 A shows the

Wiper blade

30,70 that is placed on bottom turned position P1a, P2a respectively.Under this state,

Wiper blade

30,70 has vertically superimposed R, and arranges on Width with being substantially parallel to each other.

Lid 40 extends beyond point (mid point of superimposed R) between the end portion that connecting pin 31 arrives connecting pins 31 and Wiper blade 30 from the end of retainer 23.As shown in Figure 6A, Wiper blade 30 is roughly parallel to the bearing of trend A1 of Wiper arm 20 and lid 40, but it is positioned at upside along the Width B1 of lid 40 and Wiper arm 20 and lid 40 preset distance that staggers.That is the transverse center that is positioned at the transverse center of Wiper blade 30 of upside and Wiper arm 20 and lid 40 preset distance that on the Width B1 of the lid shown in Fig. 6 A 40, staggers.Therefore, a horizontal sidepiece of lid 40 (top among Fig. 6 A half horizontal side part) covers the top surface of Wiper blade 30, and this horizontal sidepiece is the horizontal sidepiece of lid 40 relative with Wiper blade 70 on the Width B1 of lid 40.

Lid 80 extends beyond point (mid point of superimposed R) between the end portion that connecting pin 71 arrives connecting pins 71 and Wiper blade 70 from the end of retainer 63.As shown in Figure 6A, Wiper blade 70 is roughly parallel to the bearing of trend A2 (bearing of trend A2 is roughly parallel to bearing of trend A1) of Wiper arm 60 and lid 80, but it is positioned at downside along the Width B2 of lid 80 and Wiper arm 60 and lid 80 preset distance that staggers.Therefore, a horizontal sidepiece of lid 80 (bottom among Fig. 6 A half horizontal side part) covers the top surface of Wiper blade 70, and this horizontal sidepiece is the horizontal sidepiece of lid 80 relative with Wiper blade 30 on the Width B2 of lid 80.

The lower corners of the end portion 41 of lid 40 is cut at a predetermined angle, and the upper corner of the end portion 81 of lid 80 is cut at a predetermined angle.

In the present embodiment,

lid

40,80 is mutually the same, and respectively in left side and right side symmetric arrangement.According to present embodiment, like this, the element of available same type makes the commonality of element improve as lid 40 and lid 80.

Fig. 6 B shows the Wiper blade 30 that is placed on storage location P1c.At this moment, the

end portion

41,81 of

lid

40,80 and is arranged in the vertical at a distance of very little distance X toward each other, makes

lid

40,80 be retained roughly and extends point-blank, so that the outward appearance of one is provided.

Under this state, the above-mentioned state when being placed on bottom turned position P1a, P2a respectively to

Wiper blade

30,70 is similar, and

Wiper blade

30,70 has vertically superimposed R.Above-mentioned state when being placed on bottom turned position P1a, P2a respectively with

Wiper blade

30,70 is compared,

Wiper blade

30,70 Width (B1, more close each other on B2), and be arranged to be substantially parallel to each other.In the present embodiment, although

Wiper blade

30,70 is arranged to be substantially parallel to each other,

Wiper blade

30,70 there is no need parallel fully each other.

At this moment, the part (i.e. the part that is not covered by lid 80) that the end from lid 80 of the horizontal sidepiece of lid 40 (the half horizontal side part of the bottom among Fig. 6 B) covering Wiper blade 70 protrudes, the horizontal sidepiece of aforementioned lid 40 is positioned at Wiper blade 70 sides on the Width B1 of lid 40.At this moment, the part (i.e. the part that is not covered by lid 40) that the end from lid 40 of the horizontal sidepiece of lid 80 (the half horizontal side part of the top among Fig. 6 B) covering Wiper blade 30 protrudes, the horizontal sidepiece of aforementioned lid 80 is positioned at Wiper blade 30 sides on the Width B2 of lid 80.

Fig. 7 shows along the cutaway view of the line VII-VII of Fig. 6 B.As shown in Figure 7, lid 80 can cover the top surface of Wiper blade 30 and the top surface of Wiper blade 70.

As mentioned above, according to present embodiment,

lid

40,80 is cooperated each other so that cover the top surface of the

Wiper arm

20,60 of

Wiper blade

30,70 continuously, fully.

The end portion 41 of lid 40 and the end portion 81 of lid 80 are cut so that tiltedly extend in roughly the same direction updip with roughly the same angle, make that when watching end portion 41 and end portion 81 mutually each

end portion

41,81 relative another

end portion

41,81 forms undercut shape (to the shape of incision).Therefore, when lid 40 when upper position moves to storage location P1c, end portion 41 and end portion 81 can not interfered each other, and can reduce the interval between end portion 41 and the end portion 81 so that place more closely each other to them.That is, when the end surface of

end portion

41,81 when extending on the direction longitudinally, the interval that then needs to provide bigger endways between the

part

41,81 is to avoid mutual interference.Yet as present embodiment, when

end portion

41,81 formed undercut shape, the interval between the

end portion

41,81 can significantly be reduced.

When Wiper system W was placed on the storage location,

Wiper arm

20,60 and

Wiper blade

30,70 were transversely arranged continuously vehicle, make that

Wiper blade

30,70 is not obvious because

Wiper arm

20,60 and

Wiper blade

30,70 are arranged on the horizontal T of vehicle continuously.Further, in the present embodiment,

lid

40,80 transversely covers

Wiper blade

30,70 continuously vehicle, makes when the front side of vehicle is watched, and almost cannot see the existence of

Wiper blade

30,70 or can not be found substantially.Therefore, improved the overall appearance of Wiper system W with respect to car body.

Next, will be with reference to the travel mechanism 100 of figure 8 explanation present embodiments.

Travel mechanism 100 comprises first connecting rod (crank arm) 101, second connecting rod 102, third connecting rod 103, the 4th connecting rod 104, hill holder 105 and tension spring (actuating device) 106.

The cardinal extremity of first connecting rod 101 partly is to be fixed to pivotal axis 13 un-rotatably, makes first connecting rod 101 be driven by the rotary driving force of Wiper motor 10.An end portion of second connecting rod 102 is rotationally coupled to the end portion of first connecting rod 101 by first adapter shaft 111.An end portion of third connecting rod 103 is rotationally coupled to another end portion of second connecting rod 102 by second adapter shaft 112.An end portion of the 4th connecting rod 104 is rotationally coupled to another end portion of third connecting rod 103 by the 3rd adapter shaft 113, and another end portion of the 4th connecting rod 104 is rotationally coupled to the cardinal extremity part of first connecting rod 101 by the 4th adapter shaft 114.

Pivotal axis 13 axially, first adapter shaft 111 axially, second adapter shaft 112 axially, the 3rd adapter shaft 113 axially and the 4th adapter shaft 114 axially roughly parallel to each other.In the present embodiment, first connecting rod 101, second connecting rod 102, third connecting rod 103 and the 4th connecting rod 104 form four-bar mechanism 100a.Particularly, in the present embodiment, first connecting rod 101 and third connecting rod 103 be almost parallel each other, and second connecting rod 102 and the 4th connecting rod 104 be almost parallel each other.The distance of the center to center between the distance of the center to center between first adapter shaft 111 and second adapter shaft 112 (being also referred to as the distance of axis to axis) and the 3rd adapter shaft 113 and the 4th adapter shaft 114 is roughly the same.Further, the distance of the distance of the center to center between second adapter shaft 112 and the 3rd adapter shaft 113 and the center to center between the 4th adapter shaft 114 and the first connecting rod 101 is roughly the same.Therefore, the four-bar mechanism 100a of present embodiment forms parallelogram or rectangle.But the shape of four-bar mechanism 100a is not limited thereto.For example, four-bar mechanism 100a can form other shapes except that parallelogram or rectangle.

In the present embodiment, pivotal axis 13 and the 4th connecting rod 114 coaxially to each other, the central axis of pivotal axis 13 is consistent with the central axis of the 4th connecting rod 114.Further, although pivotal axis 13 is fixed to first connecting rod 101, pivotal axis 13 is rotating with respect to the 4th connecting rod 104.Therefore, the 4th connecting rod 104 is not directly synchronous with the rotation of pivotal axis 13.

Second connecting rod 102 has extendible portion 102a, and it is set to an end portion of second connecting rod 102 and extends beyond first connecting rod 111.The arm head 21 of Wiper arm 20 is formed on or is connected to this extendible portion 102a.In the present embodiment, the mode that is approximately perpendicular to the bearing of trend of extendible portion 102a with the bearing of trend of Wiper arm 20 is connected to extendible portion 102a with Wiper arm 20.

Further, conjugate foramen 102b is formed on another end portion of second connecting rod 102, makes an end of tension spring 106 engage with conjugate foramen 102b in the position that exceeds second adapter shaft 112.

Bonding part 104a extends beyond the 3rd adapter shaft 113 in an end portion of the 4th connecting rod 104.Hill holder 105 protrudes at gear unit 12 places.When pivotal axis 13 turned to predetermined corner (predetermined angular position), hill holder 105 engaged with bonding part 104a.

Further, conjugate foramen 104b is formed on another end portion of the 4th connecting rod 104, makes another end of tension spring 106 engage with conjugate foramen 104b in the position that exceeds the 4th adapter shaft 114.

As mentioned above, an end of tension spring 106 and the other end engage with the conjugate foramen 102b of second connecting rod 102 and the conjugate foramen 104b of the 4th connecting rod 104 respectively.Therefore, tension spring 106 applies predetermined propulsive effort always for four-bar mechanism 100a, so that drive second adapter shaft 112 and the 4th adapter shaft 114 is close mutually.Like this, four-bar mechanism 100a is retained formation parallelogram (referring to Fig. 8) roughly.Under the state of this almost parallel quadrangle form, the distance of the center to center between second adapter shaft 112 and the 4th adapter shaft 114 is shorter than the distance of the center to center between first adapter shaft 111 and the 3rd adapter shaft 113.In the present embodiment, tension spring 106 is used as actuating device, makes the axial dimension of pivotal axis 13 minimize, and travel mechanism 100 is formed relatively simply and compact conformation.

Further, rotate (promptly on the direction opposite at pivotal axis 13 with the wiping scope, rotate along the clockwise direction among Fig. 9 A) serviceability under, when the wiping load was applied to wiping motion that Wiper blade 30 causes Wiper blade 30 and is prevented from, tension spring 106 was accepted the external force that causes around the torque that pivotal axis 13 applies.In the present embodiment, preestablish above-mentioned predictable wiping load.Even the propulsive effort of tension spring 106 is configured to the stretching of restriction tension spring 106 when default wiping load is applied on the tension spring 106.In other words, the propulsive effort of tension spring 106 is configured to limit the remarkable increase at the interval between second adapter shaft 112 and the 4th adapter shaft 114 when the wiping load is equal to or less than scheduled volume, the wiping motion that aforementioned wiping loads on Wiper blade 30 begins to be applied to Wiper blade 30 from wipe surfaces on the direction.Like this, according to present embodiment, in normal wiping motion, tension spring 106 can significantly not stretched, and makes four-bar mechanism 100a maintain its normal shape, so that make the characteristic of Wiper arm 20 and Wiper blade 30 keep stable.

In the present embodiment, the planeness of the parallelogram of four-bar mechanism 100a is determined by the length that tension spring 106 records under relaxed state.Replacedly, can by between first connecting rod 101 and the third connecting rod 103 in the contact on the Width or determine the planeness of the parallelogram of four-bar mechanism 100a by the contact between second connecting rod 102 when four-bar mechanism 100a changes and the 4th connecting rod 104.

In the present embodiment, tension spring 106 is used as actuating device.Replacedly, can use other devices, as long as can driving four-bar mechanism 100a, it make second adapter shaft 112 and the 4th adapter shaft 114 mutually near (or replacedly, need only its can drive four-bar mechanism 100a win adapter shaft 111 and the 3rd adapter shaft 113 are left mutually).For example, a bonding part can be set to first adapter shaft 111, and another bonding part can be set to the 3rd adapter shaft 113.Then, the end of compression spring can be connected to this two bonding parts.Further, do not use tension spring or compression spring, can use torsion spring (torsion).In this case, torsion spring is provided with around second adapter shaft 112.One end of torsion spring can be connected to second connecting rod 102, and the other end of torsion spring can be connected to third connecting rod 103.Like this, with reference to figure 8, second connecting rod 102 is driven along clockwise direction around second adapter shaft 112, and third connecting rod 103 is driven in the counterclockwise direction around second adapter shaft 112.Therefore, third connecting rod 103 is driven in the counterclockwise direction.Therefore, propulsive effort is applied to that four-bar mechanism 100a go up to drive second adapter shaft 112 and the 4th adapter shaft 114 is close mutually.Except second adapter shaft 112, torsion spring also can be arranged on first adapter shaft 111, the 3rd adapter shaft 13 and the 4th adapter shaft 114.

Next, the operation of the travel mechanism 100 of present embodiment will be described with reference to figure 9A-9C.In the following description, with reciprocal wiping motion of explanation and motion from reciprocal wiping position to the storage location.Since motion from the storage location to the wiping position and reverse movement from reciprocal wiping position to the storage location, therefore, in order to simplify not explanation.

Fig. 9 A display control switch 90 is exported the state of the drive signal of operating the W1 of rain brush mechanism continuously and the wiping scope P1 between Wiper blade 30 reciprocal wiping bottom turned position P1a and the top turned position P1b.At this moment, in travel mechanism 100, close mutually by drive force second adapter shaft 112 and the 4th adapter shaft 114 that utilize tension spring 106, four-bar mechanism 100a forms parallelogram.

Fig. 9 B shows the tetragonal state of four-bar mechanism 100a keeping parallelism, and the bonding part 104a of the 4th connecting rod 104 engages with hill holder 105.According to present embodiment, at this moment, Wiper blade 30 is configured to be placed on bottom turned position P1a, and Wiper arm 20 and Wiper blade 30 are placed with in the horizontal direction and integrally extend.

In the present embodiment, when engaging between bonding part 104a and the hill holder 105, Wiper blade 30 is placed on bottom turned position P1a.Replacedly, with before hill holder 105 will soon engage, the position of bonding part 104a can be configured to corresponding with bottom turned position P1a.Like this, in normal wiping operation, bonding part 104a will often not engage with hill holder 105, makes it possible to the generation that restriction engages sound (strike note).

Move under the situation of halted state from serviceability (Fig. 9 A) at the W1 of rain brush mechanism, controller 90 output drive signals are given Wiper motor 10, pivotal axis 13 is gone up from state shown in Fig. 9 B at the direction Va opposite with the wiping scope (clockwise direction among Fig. 9 B) rotated predetermined corner.

When pivotal axis 13 rotated on the direction opposite with the wiping scope, the first connecting rod 101 that is fixed to pivotal axis 13 was gone up swing in the direction (clockwise direction) opposite with the wiping scope.Further, third connecting rod 103 synchronously rotates with first connecting rod 101, makes third connecting rod 103 swing around the 3rd adapter shaft 113 when keeping the almost parallel relation with first connecting rod 101.

At this moment, bonding part 104a engages with hill holder 105, makes the rotation of the 4th connecting rod 104 be limited.Therefore because the rotation of first connecting rod 101 and third connecting rod 103, four-bar mechanism 100a from the state exchange that forms parallelogram to the state that forms rectangle.Because this conversion, the distance of the center to center between second adapter shaft 112 and the 4th adapter shaft 114 increases, so tension spring 106 is stretched.In other words, the shape of the tension force four-bar mechanism 100a by overcoming tension spring 106 is changed to rectangle.

When this variation takes place, be connected to second connecting rod 102 motion of translation on the direction opposite of first connecting rod 101 and third connecting rod 103, to keep the almost parallel relation between second connecting rod 102 and the 4th connecting rod 104 with the wiping scope.Then, be connected to Wiper arm 20 and Wiper blade 30 motion of translation when keeping their horizontal attitudes of second connecting rod 102.

Fig. 9 C shows the state when Wiper blade 30 is placed on storage location P1c.In this embodiment, the alteration of form of four-bar mechanism 100a changes to parallelogram thereafter again to rectangle.

As mentioned above, the travel mechanism 100 of present embodiment can make Wiper arm 20 and Wiper blade 30 move to storage location P1c from bottom turned position P1a stably translational, and is keeping their horizontal attitude when pivotal axis 13 rotates.

Further, in the present embodiment, controller 90 rotates Wiper motor 10 forward and backward by servocontrol at a predetermined angle.Like this, controller 90 reciprocally rotates pivotal axis 13 and Wiper arm 20 with predetermined corner.Further, in the present embodiment, controller 90 makes Wiper motor 10 back and forth rotate predetermined angular outside the wiping scope, makes and comes approximate horizontal mobile Wiper arm 20 in ground and Wiper blade 30 by operation travel mechanism 100.

Therefore, according to present embodiment,, can relatively easily set the reciprocal rotation of reciprocal wiping motion and the predetermined rotation of stop motion by using controller 90.Further, the variation that this corner is set need not the variation of mechanism structure, and the variation of software that can be by controller 90 realizes.

In the present embodiment, four-bar mechanism 100a forms parallelogram at storage location P1c.Replacedly, four-bar mechanism 100a can be configured to form rectangle at storage location P1c.By suitable setting, the translation preset distance can be set to expectation value.

Further, the travel mechanism 100 of present embodiment is configured to be driven by Wiper motor 10.When travel mechanism 100 made Wiper arm 20 motion of translations, preferably Wiper motor 10 was with low relatively rotational speed.Like this, in the storage location, it is low relatively that the moving velocity of lid 40 becomes, and make the lid 40 that force of inertia causes and the collision of lid 80 be limited, so lid 40 can move by stationary mode.

Now, will the variation of first embodiment be described.

In first embodiment, travel mechanism 100 only is arranged among the W1 of rain brush mechanism.Replacedly, travel mechanism 100 can be set among the W2 of rain brush mechanism.When travel mechanism 100 was set to two W1 of rain brush mechanism, W2,

Wiper arm

20,60 and

Wiper blade

30,70 can move to storage location P1c, P2c respectively, keep their horizontal attitude simultaneously.

In first embodiment, Wiper system W has two rain brush mechanisms.Yet the quantity of the rain brush mechanism of Wiper system W is not limited to two, becomes into three or more if desired.

In first embodiment, lid 40 is identical with lid 80, is the element of same type therefore.Lid 40 covers half of

Wiper blade

30,70 superimposed R in the vertical, and lid 80 covers second half of

Wiper blade

30,70 superimposed R in the vertical.This can Figure 10 A-Figure 11 B shown in mode change.

In the variation of Figure 10 A and Figure 10 B, shown in Figure 10 A,

lid

40A, 80A are set to

Wiper arm

20,60 respectively.For such enforcement, extend to lid 40A terminad and be positioned at some place of Wiper blade 30 terminal fwds a little, so that cover the top surface of Wiper blade 30 fully.Lid 80A cover Wiper blade 70 top surface the cardinal extremity part relatively than the zonule, make the length of lid 80A can make shorter relatively.

In this variation example, when Wiper arm 20 and Wiper blade 30 from bottom turned position P1a (Figure 10 A) when moving to storage location P1c, shown in Figure 10 B,

lid

40A, 80A be placed with vehicle transversely linearly, extend continuously.Therefore,

Wiper arm

20,60 and

Wiper blade

30,70 are roughly covered by

lid

40A, 80A fully.At this moment, superimposed R fully covered by lid 40A.Like this, when Wiper blade 70 was designed to the part of reciprocal wiping operator's seat side glass 1, lid 80A can not move through driver vision, made driver vision can not be subjected to stopping of lid 80A.

Figure 11 A and 11B show another variation example of first embodiment.Compare with the above-mentioned variation example shown in Figure 10 B with Figure 10 A, the length that is set to the lid 40B of Wiper arm 20 is made the length that is shorter than the lid 80B that is set to Wiper arm 60.Lid 40B cover to cover Wiper blade 30 top surface the cardinal extremity part relatively than the zonule, make the length of lid 40B can make shorter relatively.On the contrary, extend to lid 80B terminad and be positioned at some place of Wiper blade 70 terminal fwds a little, so that cover the top surface of Wiper blade 70 fully.

In the variation example shown in Figure 11 A and the 11B, when Wiper arm 20 and Wiper blade 30 from bottom turned position P1a (Figure 11 A) when moving to storage location P1c, shown in Figure 11 B,

lid

40B, 80B be placed with vehicle transversely linearly, extend continuously.Therefore,

Wiper arm

20,60 and

Wiper blade

30,70 are roughly covered by

lid

40B, 80B fully.At this moment, superimposed R fully covered by lid 80B.Like this, when Wiper blade 30 was designed to the part of reciprocal wiping operator's seat side glass 1, lid 40B can not move through driver vision, made driver vision can not be subjected to stopping of lid 40B.

Change in the example in each shown in Figure 10 A-Figure 11 B, although the length of

lid

40A, 80A, 40B, 80B differs from one another, comprise that the top surface of

Wiper arm

20,60 of superimposed R and the top surface of

Wiper blade

30,70 can be covered by these

lids

40A, 80A, 40B, 80B effectively.Further, as long as the top surface of the top surface of

Wiper arm

20,60 and

Wiper blade

30,70 can the tegmentum subcovering, the length that can suitably regulate lid is to prevent to stop driver vision.

(second embodiment)

Below with reference to Figure 12 A explanation second embodiment of the present invention, and its variation example is described with reference to figure 12B and Figure 12 C.Here, please note in second embodiment and embodiment subsequently, will represent with identical mark,, just do not further specifying in order to simplify with the element that first embodiment is similar.

In first embodiment, Wiper system W is the opposed type rain brush.Yet, the invention is not restricted to this.Especially, shown in Figure 12 A, be the tandem Wiper system according to the Wiper system of second embodiment, two rain brush mechanisms begin the reciprocally swinging wiping from cooresponding storage location with common direction.

With reference to figure 12A, two rain brush mechanisms are separately positioned on the vehicle right side and are positioned at or center on lateral center of car.The right side rain brush mechanism that is set to the vehicle right side comprises Wiper arm 20C, Wiper blade 30C and lid 40C.Wiper arm 20C is fixed to pivotal axis 13C, and this pivotal axis 13C is set to the vehicle right side.Wiper blade 30C is installed to the end portion of Wiper arm 20C.Lid 40C covers the top surface of Wiper arm 20C and the top surface of Wiper blade 30C.Be arranged on or comprise Wiper arm 60C, Wiper blade 70C and lid 80C around the central side rain brush mechanism of lateral center of car.Wiper arm 60C is fixed to pivotal axis 53C, and this pivotal axis 53C is arranged on or around lateral center of car.Wiper blade 70C is installed to the end portion of Wiper arm 60C.Lid 80C covers the top surface of Wiper arm 60C and the top surface of Wiper blade 70C.

At the place, storage location,

Wiper blade

30C, 70C form vertically superimposed Rc, and transversely arranging with the adjoining land that concerns of almost parallel at vehicle.In the storage location, Wiper blade 30C is placed on the pivotal axis 53C, and the cardinal extremity of lid 80C partly is placed on lid 40C below and extends with lid 40C almost parallel ground.Further, around the end of lid 40C, lid 80C is up crooked, and the bearing of trend along lid 40C extends continuously from lid 40C then.

In Figure 12 A, lid 40C cover superimposed Rc roughly half, lid 80C cover superimposed Rc roughly remaining half.

The variation example of Wiper system shown in Figure 12 B displayed map 12A.The length of the lid 40C of Figure 12 B is made the length of the lid 40C that is shorter than Figure 12 A.Compare with Figure 12 A, the lid 80C of Figure 12 B is at the location bending of the cardinal extremity part of more close lid 80C.Like this, in Figure 12 B, superimposed Rc roughly all covered by lid 80C.

Another of Wiper system shown in Figure 12 C displayed map 12A changes example.The length of the lid 40C of Figure 12 C is made the length of the lid 40C that is longer than Figure 12 A.Compare with Figure 12 A, the lid 80C of Figure 12 C is at the location bending of the end portion of more close lid 80C.Like this, in Figure 12 C, superimposed Rc roughly all covered by lid 40C.

When having structure shown in Figure 12 A-Figure 12 C, even in the tandem Wiper system, in the storage location,

lid

40C, 80C are placed in the vertical linear extension continuously, so that cover Wiper arm 20C, whole length of 60C and whole length of

Wiper blade

30C, 70C.

(the 3rd embodiment)

Now, will the third embodiment of the present invention be described with reference to figure 13-16.

In first embodiment,

Wiper arm

20,60 is driven independently by

Wiper motor

10,50 independently respectively.Yet, the invention is not restricted to this.

Shown in Figure 13-15, comprise 30,70, two

lids

40,80 of 20,60, two Wiper blades of two Wiper arms and travel mechanism 100 according to the Wiper system W of the 3rd embodiment.As substituting of

Wiper motor

10,50, the Wiper system W of present embodiment comprises Wiper motor 200 and connecting rod mechanism 210.

Wiper motor 200 is electrical motors, and its uniaxially rotates so that reciprocally swing Wiper arm 20,60.Replacedly, Wiper motor 200 can rotate so that reciprocally

swing Wiper arm

20,60 forward and backward.

Connecting rod mechanism 210 comprises crank arm 211, bar 212, crank 213, bar 214, bar 215, goes up lifting motor 216, crank arm 217, segmented poles 218, bar 219, pivoting lever 220, pivotal axis 221, pivoting lever 222 and pivotal axis 223.

Last lifting motor 216, crank arm 217 and segmented poles 218 form rising mechanism 224.

The cardinal extremity of crank arm 211 is fixed to the output shaft 201 of Wiper motor 200, and the end portion of crank arm 211 is rotationally coupled to an end of bar 212 by ball and cocket joint 231.The other end part of bar 212 is rotationally coupled to an end parts of crank 213 by ball and cocket joint 232.One end parts of bar 214 is rotationally coupled to ball and cocket joint 232.

Crank 213 is supported rotationally by pivot shaft 233, and pivot shaft 233 is supported by the body of vehicle.One end parts of bar 215 is rotationally coupled to the other end part of crank 213 by ball and cocket joint 234.

The segmented poles 218 of one end parts of the other end of bar 214 part and bar 219 by rising mechanism 224 is connected to each other and is in the same place.

The end of pivoting lever 220 is rotationally coupled to the other end part of bar 219 by ball and cocket joint 238.The cardinal extremity of pivoting lever 220 is fixed to the bottom of pivotal axis 221.Travel mechanism 100 (first connecting rod 101) is connected to the end portion of pivotal axis 221.Therefore, when pivotal axis 221 reciprocally rotated by the motion of pivoting lever 220, Wiper arm 20 was by travel mechanism's 100 swings.

The end portion of pivoting lever 222 is rotationally coupled to the other end part of bar 215 by ball and cocket joint 239.The cardinal extremity of pivoting lever 222 is fixed to the bottom of pivotal axis 223, and Wiper arm 60 is connected to the end portion of pivotal axis 223.Therefore, when pivotal axis 223 reciprocally rotates by the motion of pivoting lever 222, Wiper arm 60 swings.

Rising mechanism 224 can switch between the two positions, that is, and and between wiping position (referring to Figure 13 and Figure 14) and storage location (referring to Figure 15).When rising mechanism 224 is placed on wiping position, Wiper arm 20 erasable wiping scope P1.When rising mechanism 224 during in the storage location, Wiper arm 20 is movable to storage location P1c.

In rising mechanism 224, the cardinal extremity of crank arm 217 is fixed to the output shaft 216a of lifting motor 216, and the cardinal extremity part of segmented poles 218 is rotationally coupled to the end portion of crank arm 217 by ball and cocket joint 237.

Two of each interval end portion that are connected to form in segmented poles 218 in a circumferential direction.Ball and cocket joint 235,236 is distributed and is set to these junctions.The other end part of bar 214 is connected to segmented poles 218 by ball and cocket joint 235.One end of bar 219 is connected to segmented poles 218 by ball and cocket joint 235,236.

As shown in figure 16, Wiper motor 200 is configured to based on the drive signal running that comes self-controller 290 that receives.Controller 290 is connected to rain brush switch 291 and two position transduser 200a,

216b.Position transduser

200a, 216b are installed in respectively in Wiper motor 200 and the last lifting motor 216.Similar to the

position transduser

14,54 of first embodiment, position transduser 200a, 216b are Magnetic Sensors.

When controller 290 received operation signal from rain brush switch 291, controller 290 was with predesigned order control Wiper motor 200 and last lifting motor 216.That is, when controller 290 received operation signal in the storage location, controller 290 operations were gone up lifting motor 216 so that crank arm 217 is moved to wiping position (causing the state from the state variation of Figure 15 to Figure 14) from the storage location.When controller 290 is determined crank arm 217 when the storage location moves to wiping position based on the impulse singla that receives from position transduser 216b, Wiper motor 200 output drive signals given by controller 290 so that the running Wiper motor.Like this,

Wiper arm

20,60 is swung.

In the process of the continuous swinging operation of

Wiper arm

20,60, maybe when when rain brush switch 291 receives the OFF signal, controller 290 stops at rotational angle position corresponding to bottom wiping stop position based on receive impulse singla from position transduser 200a (referring to Figure 14) with crank arm 211 when the operation signal from rain brush switch 291 stops.When controller 290 determines that crank arms 211 stop at rotational angle position corresponding to bottom wiping stop position, controller 290 drives rising mechanisms 216 so that switch to storage location (therefore, cause from the state variation of Figure 14 to Figure 15 state) from wiping position.

Next, the operation of the Wiper system W of the 3rd embodiment will be described with reference to figure 13-15.

Identical with Fig. 1, Figure 13 shows that

Wiper arm

20,60 moves to the state of top turned position P1b, P2b respectively.Identical with Fig. 2, Figure 14 shows that

Wiper arm

20,60 moves to the state of bottom turned position P1a, P2a respectively.Identical with Fig. 3, Figure 15 shows that Wiper arm 20 moves to the state of storage location P1c.

As Figure 13 and shown in Figure 14, be in rising mechanism 224 under the state of wiping position, when Wiper motor 200 was operated in one direction rotating crank arm 211, the rotation of bar 212 response crank arms 211 was moved forward and backward.Because the motion of bar 212, crank 213 is around pivot shaft 233 swings.

When crank 213 swings, receive an end parts of crank 213 and the bar 214 and the bar 215 of other end part respectively repeatedly and on left and right directions, move forward and backward.

Because moving forward and backward of bar 214, segmented poles 218 is around ball and cocket joint 237 swings.Because the swing of segmented poles 218, bar 219 are moved forward and backward.At this moment, the last lifting motor 216 of rising mechanism 224 remains on halted state, so crank arm 217 is held and stops.

When left and right bar 219,215 in the above described manner forward and when mobile backward, pivotal axis 220,222 is swung in predetermined angular range.Like this,

Wiper arm

20,60 is swung, so the wipe surfaces of the glass 1 in

Wiper blade

30,70 difference reciprocal wiping wiping scope P1, the P2.

When

Wiper arm

20,60 moved to the storage location, as shown in figure 14, Wiper motor 200 stopped under the state that

Wiper arm

20,60 is placed on bottom turned position P1a, P2a respectively.

Under this state, last lifting motor 216 is operated, and make crank arm 217 rotate so that move to the storage location from wiping position in the clockwise direction, so bar 219 further is pushed on vehicle dextrad.Like this, pivotal axis 220 is rotated predetermined angular in the clockwise direction, makes travel mechanism 100 be operated in the mode similar in appearance to first embodiment, thus Wiper arm 20 be driven so as motion of translation to storage location P1c.When Wiper arm 20 in the above described manner roughly during motion of translation,

lid

40,80 arranged in succession continuously on lateral direction of car T.

As mentioned above, as substituting of two Wiper motors being provided for respectively

Wiper arm

20,60, single Wiper motor 200 and connecting rod mechanism 210 can be set, so that reciprocally swing two

Wiper arms

20,60.

In described the 3rd embodiment of Figure 13-16, when storing stop motion, only Wiper arm 20 is done motion of translation.Replacedly, Wiper arm 20 and Wiper arm 60 can be formed at and carry out motion of translation when storing stop motion.Under these circumstances, bar 214 and bar 219 can directly be connected to each other, and need not to be provided with rising mechanism 224.Replacedly, except rising mechanism 224, also can another similar rising mechanism be set in Wiper arm 60 sides.

(the 4th embodiment)

Below with reference to Figure 17 A and Figure 17 B explanation fourth embodiment of the present invention.

In first embodiment, Wiper arm 20 and Wiper blade 30 are configured to stop at stop position P1c, and stop position P1c is positioned at the outer side-lower of bottom turned position P1a.Yet, the invention is not restricted to this.With reference to figure 17A and Figure 17 B, in the Wiper system of the 4th embodiment, Wiper arm 20 and Wiper blade 30 are configured to stop at storage location P1d, and storage location P1d is positioned at the top, the outside of top turned position P1b.In the present embodiment, Wiper arm 60 and Wiper blade 70 are configured to stop at storage location P2d equally, and storage location P2d is positioned at the top, the outside of top turned position P2b.Storage location P1d, P2d are configured to framework (A post) almost parallel with support glass 1.

Figure 17 A shows that

Wiper blade

30,70 is placed into the serviceability of top turned position P1b, P2b respectively.Figure 17 B shows that

Wiper blade

30,70 is placed into another serviceability of storage location P1d, P2d respectively.

Similar to first embodiment, the W2 of rain brush mechanism of present embodiment comprises travel mechanism 100.Yet, in the W2 of rain brush mechanism of present embodiment, being placed at Wiper blade 70 under the state of top turned position P2b, hill holder 105 is placed on the position of the rotation of hill holder 105 restrictions the 4th connecting rod 104.Further, in the present embodiment, W1 of rain brush mechanism and the W2 of rain brush mechanism are mutually symmetrical on the horizontal T of vehicle.

Because such structure is rotated when Wiper motor 10 receives corresponding drive signal according to slave controller 90,

Wiper blade

30,70 is swung to top turned position P1b, P2b respectively.Afterwards, when Wiper motor 10 when predetermined angular is further rotated in this position, travel mechanism 100 is turned round.Like this, substantial transverse respectively storage location P1d, the P2d of moving to of Wiper arm 20 and Wiper blade 30 and Wiper arm 60 and Wiper blade 70, storage location P1d, P2d are roughly parallel to top turned position P1b, P2b respectively, and on the direction that is roughly parallel to top turned position P1b, P2b respectively top turned position P1b, P2b towards the outside.

At this moment, Wiper arm 20 and Wiper blade 30 and Wiper arm 60 and Wiper blade 70 move about equally distance in top and bottom with about equally speed, make Wiper arm 20 and Wiper blade 30 and Wiper arm 60 and Wiper blade 70 can carry out stable motion of translation.Therefore, Wiper arm 20 and Wiper blade 30 and Wiper arm 60 and Wiper blade 70 can stop along framework.Equally, when wiping motion, Wiper arm 20 and Wiper blade 30 and Wiper arm 60 and Wiper blade 70 can turn back to top turned position P1b, P2b respectively, and top turned position P1b, P2b lay respectively at storage location P1d, P2d to the inside.Like this, in the present embodiment, when stop motion and back and forth during wiping motion, can limit the interference of

Wiper blade

30,70 and framed structure.

(the 5th embodiment)

To Figure 19 B the fifth embodiment of the present invention is described below with reference to Figure 18 A.

Figure 18 A has shown Wiper system 140 according to the 5th embodiment to Figure 18 B.The Wiper system 140 of present embodiment comprises two rain brush 141,151, the wipe surfaces 1a of these two rain brush, 141,151 wiping vehicle front screens 1, and two rain brush the 141, the 151st, in-line, in this tandem, the wiping direction of two rain brush 141,151 is common.Rain brush 141 is provided as operator's seat side rain brush, and the operator's seat side pivotal axis 132 that supports this rain brush 141 is arranged on vehicle one side on the lateral direction of car T.Rain brush 151 is provided as front passenger side rain brush, and the front passenger side pivotal axis 133 that supports this rain brush 151 is arranged on the vehicle approximate center on the lateral direction of car T.Each rain brush 141,151 comprises Wiper arm 142,152 and Wiper blade 143,153.The cardinal extremity of Wiper arm 142,152 is fixed to corresponding pivotal axis 132,133.Wiper blade 143,153 is connected to the end portion of Wiper arm 142,152 so that wiping wipe surfaces 1a.

The Wiper arm 142 of operator's seat side rain brush 141 comprises arm head 145, retainer 146 and arm spare 147.Arm head 145 slight curvatures become Dog leg, and its cardinal extremity is fixed to pivotal axis 132.Retainer 146 roughly extends point-blank, and its base end part component of rotation ground be connected to arm head 145 end portion in case permission retainer 146 be approximately perpendicular to wipe surfaces 1a direction on rotate towards and away from wipe surfaces 1a.Arm spare 147 is fixed to retainer 146, and extends to form L shaped body from the end of retainer 146.Retainer 146 and arm spare 147 form arm member.Retainer 146 has the Horseshoe section, has opening on its downside (its wipe surfaces 1a side), and accommodates the operating spring (not shown), and this operating spring presses against wipe surfaces 1a side with the end portion of Wiper arm 142 (arm spare 147).Wiper blade 143 is connected to the end portion of arm spare 147.The maintenance pawl 143a of the bar member of the rain brush bar 143b (Figure 19 B) of wiping wipe surfaces 1a by being connected to arm spare 147 is kept by Wiper blade 143.The bar member of Wiper blade 143 is coated with lid 143c.

The Wiper arm 152 of front passenger side rain brush 151 comprises arm head 155, retainer 156 and arm spare 157.Arm head 155 roughly extends point-blank, and its cardinal extremity is fixed to pivotal axis 133.Retainer 156 slight curvatures, and its base end part component of rotation be connected to the end portion of arm head 155 in case allow retainer 156 be approximately perpendicular to wipe surfaces 1a direction on rotate towards and away from wipe surfaces 1a.Arm spare 157 is fixed to retainer 156, and extends point-blank on the bearing of trend of retainer 156 from the end of retainer 156.Retainer 156 and arm spare 157 form arm member.Identical with retainer 146, retainer 156 has the Horseshoe section, have opening on its downside (its wipe surfaces 1a side), and accommodate the operating spring (not shown), this operating spring presses against wipe surfaces 1a side with the end portion of Wiper arm 152 (arm spare 157).Wiper blade 153 is connected to the end portion of arm spare 157.Similar to Wiper blade 143, the maintenance pawl (not shown) of the bar member of the rain brush bar 143b (not shown) of wiping wipe surfaces 1a by being connected to arm spare 157 is kept by Wiper blade 153.The bar member of Wiper blade 153 is coated with lid 153c.

Shown in Figure 18 A, the reciprocal rotation of each pivotal axis 132,133 that causes by running by the Wiper motor (not shown), reciprocally swinging in the predetermined angular range of the Wiper blade 143,153 of each rain brush 141,151 between bottom turned position K1 and top turned position K2, be placed with roughly transversely extension at turned position K1 place, bottom Wiper blade 143,153, be placed with on the horizontal direction that is being approximately perpendicular to vehicle at turned position K2 place, top Wiper blade 143,153 and extend at vehicle.In the intermittence of rain brush 141,151 wiping operation, bottom turned position K1 is also as the stop position of rain brush 141,151.Between the non-on-stream period of each rain brush 141,151, shown in Figure 18 B, the Wiper blade 143,153 of rain brush 141,151 is placed on storage location K0, and this storage location K0 is arranged on the bottom of front screen 1 and independently below the turned position K1 of bottom.That is, when each rain brush 141,151 was not worked, Wiper blade 143,153 was placed on storage location K0.Then, when 141,151 work of each rain brush, Wiper blade 143,153 moves to from storage location K0, afterwards, and reciprocally swinging between bottom turned position K1 and top turned position K2.Then, each rain brush 141,151 stops wiping operation, and Wiper blade 143,153 moves to storage location K0 from bottom turned position K1.

When each Wiper blade 143,153 was placed on storage location K0, the Wiper arm 152 of the Wiper arm 142 of operator's seat side rain brush 141 and front passenger side rain brush 151 was retained and roughly extends point-blank to realize the overall appearance of rain brush 141,151.In order to realize this overall appearance, the retainer 146 of operator's seat side Wiper arm 142 (as the end portion of Wiper arm 142 of the present invention) is configured to and the arm head 155 (as the end portion of Wiper arm 152 of the present invention) of front passenger side Wiper arm 152 overlapping on short transverse (being defined as the axial vertical direction with wipe surfaces 1a or pivotal axis 132,133).

Particularly, shown in Figure 19 A and Figure 19 B, front passenger side arm head 155 is divided into the end side projection 155c at base end side retainer placement part 155b and ladder 155a place, and ladder 155a is positioned at the roughly longitudinal center place of arm head 155.Retainer placement part 155b is positioned on the arm head 155 of base end side of ladder 155a, and has relatively little height, and this relatively little height is measured along above-mentioned short transverse.End side projection 155c is positioned on the arm head 155 of end side of ladder 155a, and has big relatively height, and this big relatively height is measured along above-mentioned short transverse, and greater than the height of retainer placement part 155b.At storage location K0 place, the end side lid part 146a of operator's seat side retainer 146 is placed on the top side of retainer placement part 155b of arm head 155, and the top surface 146b of retainer 146 is roughly concordant with the top surface 155d of end side projection 155c.Therefore, under this state, the part of the partial sum front passenger side Wiper arm 152 of operator's seat side Wiper arm 142 overlaps each other to form superimposed part.Further, the top surface 155d of the end side projection 155c of arm head 155 is also concordant with the top surface 156a of front passenger side retainer 156.

Like this, when going up in the direction that is approximately perpendicular to wipe surfaces 1a (pivotal axis 132,133 axially) when the top side is watched, operator's seat side Wiper arm 142 and front passenger side Wiper arm 152 show as and extend continuously so that realize the overall appearance of rain brush 141,151.Equally, when when the cross side of Wiper arm 142,152 is watched, Wiper arm 142,152 shows as and extends continuously so that realize the overall appearance of rain brush 141,151.When operator's seat side Wiper arm 142 and front passenger side Wiper arm 152 overlap each other, on the cross side (wiping motion begins the direction side) of superimposed part, operator's seat side Wiper blade 143 is placed with the superimposed part between the contiguous Wiper arm 142,152 and extends with superimposed part almost parallel ground.

At storage location K0 (stop position), the stepped surfaces 155e of the axial end surface 146c of retainer 146 and arm head 155 (end axial surface of ladder 155a) toward each other, and at superimposed part almost parallel each other.Further, the stepped surfaces 155e of the end surface 146c of retainer 146 and arm head 155 begins direction (direction of the bottom turned position K1 from storage location K0 to Figure 18 B) along the wiping motion of rain brush 141,151 and forms undercut shape respectively and cut shape (shape of upwards cutting), and roughly extends point-blank on respect to the vertical angled direction of tilt of Wiper arm 142,152.Like this, when rain brush 141,151 moves to storage location K0 (stop position) or when storage location K0 (stop position) moves to bottom turned position K1 from bottom turned position K1, prevented the interference between superimposed part place retainer 146 and arm head 155 effectively, gap S between apparent surface 146b, the 155e helps being minimized, and improves the outward appearance of Wiper system 140.

Next, will the advantage of the 5th embodiment be described.

(1) in the Wiper system 140 of present embodiment, when each Wiper blade 143,153 is placed on storage location K0, the base end side (the retainer placement part 155b of arm head 155) of the Wiper arm 152 of end side of the Wiper arm 142 of operator's seat side rain brush 141 (the end side lid part 146a of retainer 146) and front passenger side rain brush 151 overlaps each other on short transverse to form superimposed part, and this superimposed part provides vertically continuous outward appearance between Wiper arm 142,152.Like this, operator's seat side rain brush 141 and front passenger side rain brush 151 can provide overall appearance, and the independent outward appearance of separation can be provided, make the non-integral impression of rain brush 141,151 be reduced, therefore, the existence of rain brush 141,151 just can not be too showy on the vehicle, improved the outward appearance of vehicle.

(2) according to present embodiment, the base end side of the end side of operator's seat side Wiper arm 142 and front passenger side Wiper arm 152 is overlapping to form superimposed part.Particularly, the base end side of each Wiper arm 142,152 is fixed to the pivotal axis 132,133 of vehicle.Therefore, when the base end side of the superimposed part of formation of front passenger side Wiper arm 152 is placed on the below of end side of operator's seat side Wiper arm 142, interference between front passenger side pivotal axis 133 and the operator's seat side Wiper arm 142 can be prevented effectively, makes superimposed part with simple form simultaneously.

(3) according to present embodiment, the end side of operator's seat side Wiper arm 142 is overlapping to form superimposed part on the arm head 155 of front passenger side Wiper arm 152.Particularly, the arm head 155 of Wiper arm 152 is fixed to pivotal axis 133, the retainer 156 of Wiper arm 152 with respect to arm head 155 on the direction that is approximately perpendicular to wipe surfaces 1a rotatable to leave wipe surfaces 1a.Therefore, when not rotating on the direction that is being approximately perpendicular to wipe surfaces 1a when forming superimposed part with the arm head 155 that leaves wipe surfaces 1a, the gap of the end side of operator's seat side Wiper arm 142 between the arm head 155 of front passenger side Wiper arm 152 can be minimized on short transverse.

(4) according to present embodiment, the top surface 155d of the end side projection 155c of the top surface 146b of the retainer 146 of operator's seat side Wiper arm 142, front passenger side arm head 155 and the top surface 156a of retainer 156 are roughly concordant each other in superimposed part.Like this, rain brush 141,151 provides overall appearance, does not have remarkable ladder between them, has improved the outward appearance of vehicle.

(5) according to present embodiment, the stepped surfaces 155e of the end surface 146c of operator's seat side retainer 146 and front passenger side arm head 155 toward each other, make end surface 146c and stepped surfaces 155e the wiping motion of rain brush 141,151 begin to form respectively on the direction undercut shape (undercutshape) and on cut shape (uppercut shape), and on respect to the vertical angled direction of tilt of Wiper arm 142,152, roughly extend point-blank.Like this, the stepped surfaces 155e of the end surface 146c of retainer 146 and arm head 155 can not interfere mutually, and the gap S between end surface 146c and the stepped surfaces 155e is minimized, and has improved outward appearance.

(6) according to present embodiment, the wiping motion that operator's seat side Wiper blade 143 is placed on operator's seat side Wiper arm 142 begins on the direction side.Therefore, even be maintained under the state of storage location K0 at operator's seat side Wiper arm 142 and front passenger side Wiper arm 152, at storage location K0 place, realized the overall appearance of rain brush 141,151, the wiping setting in motion of operator's seat side Wiper blade 143 can not interfered.

(7) rain brush 141,151 of present embodiment is configured to have superimposed part when rain brush 141,151 is placed on storage location K0, and storage location K0 is independent of bottom turned position K1 and is provided with.That is, rain brush 141,151 back and forth is being easy to have offset in the wiping motion.Therefore, because said structure can prevent in the collision between superimposed part place rain brush 141,151 during the wiping motion.

The 5th embodiment can change as follows.

In the 5th embodiment, the end side of operator's seat side Wiper arm 142 is overlapping on the base end side of front passenger side Wiper arm 152.This can make that the base end side of front passenger side Wiper arm 152 is overlapping on the end side of operator's seat side Wiper arm 142 conversely.

In the 5th embodiment, the end side of operator's seat side Wiper arm 142 part is overlapping so that have superimposed part on the arm head 155 of Wiper arm 152.Yet the structure of superimposed part is not limited thereto.For example, the end side of operator's seat side Wiper arm 142 part can be overlapping on the arm head 155 of front passenger side Wiper arm 152 and retainer 156.

In the 5th embodiment, the top surface 155d of the end side projection 155c of the top surface 146b of the retainer 146 of operator's seat side Wiper arm 142, front passenger side arm head 155 and the top surface 156a of retainer 156 are roughly concordant each other.Yet these concordant each other parts can be not limited to these parts.Further replacedly, if desired, these parts can be not concordant mutually.

In the 5th embodiment, operator's seat side retainer 146 respect to one another the end surface 146c and the stepped surfaces 155e of arm head 155 on respect to the vertical angled direction of tilt of Wiper arm 142,152, roughly extend point-blank.Replacedly, end surface 146c and stepped surfaces 155e in an inclined direction extend on non-rectilinear ground.For example, end surface 146c and stepped surfaces 155e can be arc or bending.Further, this facing surfaces 146c, 155e can not extend on the vertical angled direction of tilt with respect to Wiper arm 142,152.For example, this facing surfaces 146c, 155e can extend on the direction longitudinally perpendicular to Wiper arm 142,152.

In the 5th embodiment, operator's seat side Wiper blade 143 is placed on the cross side of the superimposed part between the Wiper arm 142,152.Replacedly, operator's seat side Wiper blade 143 can be included in the superimposed part.

In the 5th embodiment, when being placed on storage location K0, rain brush 141,151 forms superimposed part.Yet in the situation of the Wiper system that does not have storage location K0, superimposed part is formed on the bottom turned position.

In the 5th embodiment, arm spare 147,157 is independent of retainer 146,156 and forms, afterwards and be fixed on the retainer 146,156 to form arm member.Replacedly, retainer and arm spare can integrally form to realize arm member.

For those skilled in the art, other advantages and variation example are obvious.Protection scope of the present invention is not limited to shown and illustrated specific detail, typical equipments and illustrative example.

Claims

1. Wiper system comprises:

First and second Wiper arms (20,142; 60,152); With

First and second Wiper blades (30,143; 70,153), first and second Wiper blades are connected respectively to first and second Wiper arms (20,142; 60,152) so as wiping wipe surfaces (1a) it is characterized in that, first Wiper arm (20,142) comprise lid part (40,146a), when first and second Wiper blades (30,143; 70,153) each in is placed on its cooresponding stop position (P1c, P2c, K0) time, described lid part (40,146a) cover second Wiper arm (60,152) and second Wiper blade (70 at least in part, 153) at least one in so that arrange first and second Wiper arms (20,142 along one of the lower edge of wipe surfaces (1a) with connecing another continuously; 60,152).

2. Wiper system according to claim 1, wherein:

Described first and second Wiper blades (30,70) comprise lap respectively, each in first and second Wiper blades (30,70) is placed on cooresponding stop position (P1c, P2c) time, described lap vertically overlaps each other so that form superimposed (R) along it;

When first and second Wiper blades (30,70) each in be placed on cooresponding stop position (P1c, in the time of P2c), described first and second Wiper blades (30,70) each other almost parallel and on the Width of first and second Wiper blades (30,70) one connect another ground and arrange;

The lid part (40) of first Wiper arm (20) covers the top surface of first Wiper blade (30);

Second Wiper arm (60) comprises lid part (80), and this lid part (80) covers the top surface of second Wiper blade (70);

When first and second Wiper blades (30,70) each in is placed on cooresponding stop position (P1c, P2c) time, the lid part (40) of first Wiper arm (20) and the lid part (80) of second Wiper arm (60) vertical last continuous a layout so that cover the top surface of first Wiper blade (30) and the top surface of second Wiper blade (70) of first and second Wiper blades (30,70) with connecing another.

3. Wiper system according to claim 2 is wherein when first and second Wiper blades (30,143; 70,153) each in is placed on cooresponding stop position (P1c, P2c) time, the lid of first Wiper arm (20) part (40) covers at least a portion of first Wiper blade (30) top surface in superimposed (R) and also covers at least a portion of second Wiper blade (70) top surface in superimposed (R).

4. Wiper system according to claim 1, wherein said first and second Wiper arms (20,60) are respectively from the stop position of cooresponding Wiper blade (30,70) (P1c, P2c) swing respectively in the opposite direction.

5. Wiper system according to claim 2, wherein the longitudinal end branch of the lid part (80) of the longitudinal end of the lid of first Wiper arm (20) part (40) branch and second Wiper arm (60) has undercut shape toward each other and respectively, when first and second Wiper blades (30,70) each in is placed on cooresponding stop position (P1c, P2c) described undercut shape is the wiping scope (P1 from wipe surfaces (1a) time, P2) quilt is towards stop position (P1c, P2c) undercutting of Ding Wei a side.

6. Wiper system according to claim 2, first and second Wiper blades (30 wherein, stop position (the P1c of each 70), P2c) be the storage location, this storage location is arranged at least one the outside of the wiping scope (P2) of the wiping scope (P1) of first Wiper blade (30) and second Wiper blade (70), at place, this storage location, first and second Wiper blades (30,70) are placed with located adjacent one another and almost parallel each other.

7. Wiper system according to claim 1, wherein first and second Wiper arms (20,142; 60,152) from cooresponding Wiper blade (30,143; 70,153) stop position is swing respectively on common direction.

8. Wiper system according to claim 7, wherein the lid of first Wiper arm (142) part (146a) forms the end portion of first Wiper arm (142), when first and second Wiper blades (143, when each 153) was placed on cooresponding stop position (K0), the cardinal extremity of the end portion of first Wiper arm (142) and second Wiper arm (152) part was overlapping so that form superimposed part on the short transverse of the lid part (146a) of first Wiper arm (142).

9. Wiper system according to claim 8, wherein

First Wiper arm (142) comprising:

Be fixed to the arm head (145) on first pivotal axis (132); With

Arm member (146,147), described arm member (146,147) are rotationally coupled on the arm head (145) of first Wiper arm (142), and comprise the lid part (146a) of first Wiper arm (142);

Second Wiper arm (152) comprising:

Be fixed to the arm head (155) on second pivotal axis (133); With

Arm member (156,157), described arm member (156,157) are rotationally coupled on the arm head (155) of second Wiper arm (152); And

The arm member (146,147) of first Wiper arm (142) is overlapping so that form superimposed part with the arm head (155) of second Wiper arm (152).

10. Wiper system according to claim 8, it is roughly concordant with the top surface (155d) of second Wiper arm (152) at the top surface (146b) of superimposed part first Wiper arm (142) when being placed on cooresponding stop position (K0) that wherein said superimposed part is configured in first and second Wiper blades (143,153) each.

11. Wiper system according to claim 10, wherein

Described first and second Wiper arms (142,152) has facing surfaces respectively, when first and second Wiper blades (143, when each 153) is placed on cooresponding stop position when (K0), aforementioned facing surfaces is in the vertical toward each other and with respect to each the fore-and-aft tilt in first and second Wiper arms;

The apparent surface of first Wiper arm (142) has undercut shape, and the wiping motion of its each in first and second Wiper arms (142,152) begins on the direction by undercutting; And

Cut shape on the apparent surface of second Wiper arm (152) has, its each the wiping motion in first and second Wiper arms (142,152) begin on the direction by on cut.

12. Wiper system according to claim 8, wherein first Wiper blade (143) wiping motion that is placed on first Wiper arm (142) begins the direction side, locates and first Wiper arm (142) almost parallel at the stop position (K0) of first Wiper blade (143).

13. Wiper system according to claim 8, wherein

The stop position (K0) of each in first and second Wiper blades (143,153) is the storage location of Wiper blade (143,153), and the bottom swing turned position (K1) that this storage location is independent of Wiper blade (143,153) is provided with; And

When in first and second Wiper blades (143,153) each was placed on cooresponding storage location (K0), first Wiper arm (142) was overlapped superimposed with second Wiper arm (152).

14. Wiper system according to claim 1, wherein

Described first and second Wiper arms (20,60) are connected respectively to first and second pivotal axis (13,53), and reciprocally swing on relative direction respectively;

Described first and second Wiper blades (30,70) are connected respectively to the end portion of first and second Wiper arms (20,60), so that reciprocally wiping wipe surfaces (1a); With, described Wiper system also comprises

At least one travel mechanism (100), it drives at least one in first and second Wiper arms (20,60) so that make first and second Wiper arms (20,60) at least one in roughly motion of translation makes the corresponding Wiper blade (30 that is connected thereto, 70) at swing turned position (P1a, the P2a of cooresponding Wiper blade (30,70), P1b, P2b) and stop position (P1c, the P2c of cooresponding Wiper blade (30,70), P1d, P2d) move the stop position (P1c of wherein cooresponding Wiper blade (30,70) between, P2c, P1d is P2d) at the swing turned position (P1a of cooresponding Wiper blade (30,70), P2a, P1b, outside P2b) is therefore with cooresponding Wiper blade (30,70) (P1 P2) keeps apart wiping scope.

15. Wiper system according to claim 14 wherein also comprises at least one Wiper motor (10,50), it drives first and second Wiper arms (20,60), wherein at least one travel mechanism (100) by at least one driving at least one Wiper motor (10,50).

16. Wiper system according to claim 14, wherein

First and second Wiper blades (30,70) comprise lap respectively, when first and second Wiper blades (30,70) each in is positioned at the wiping scope side of second Wiper blade (70) with first Wiper blade (30) and at first and second Wiper blades (30,70) mode that is roughly parallel to second Wiper blade (70) on the Width is placed on cooresponding stop position (P1c, P2c) time, aforementioned lap vertically overlaps each other to form superimposed (R) along it; And

Described at least one travel mechanism (100) comprises single travel mechanism (100), and it only drives first Wiper arm (20).

17. Wiper system according to claim 14, wherein said at least one travel mechanism (100) comprises the travel mechanism (100) that drives first Wiper arm (20), and this travel mechanism (100) comprising:

First connecting rod (101), it has the first and second relative ends, and is fixed to first pivotal axis (13) by the first end of first connecting rod (101);

Second connecting rod (102), it has the first and second relative ends, and be connected rotationally with the second end of first connecting rod (101) by the first end of first adapter shaft (111) at second connecting rod (102), first adapter shaft (111) is roughly parallel to first pivotal axis (13), and wherein the first end of second connecting rod (102) is fixed to Wiper arm (20);

Third connecting rod (103), it has the first and second relative ends, and be roughly parallel to first connecting rod (101), wherein the first end of third connecting rod (103) is rotationally coupled to the second end of second connecting rod (102) by second adapter shaft (112) that is roughly parallel to first adapter shaft (111);

The 4th connecting rod (104), it has the first and second relative ends, and be roughly parallel to second connecting rod (102), wherein, the first end of the 4th connecting rod (104) is rotationally coupled to the second end of third connecting rod (103) by the 3rd adapter shaft (113) that is roughly parallel to second adapter shaft (112), and the second end of the 4th connecting rod (104) is by being roughly parallel to the 3rd adapter shaft (113) and being rotationally coupled to the first end of first connecting rod (101) with coaxial the 4th adapter shaft (114) of first pivotal axis (13);

Actuating device (106) is used to apply propulsive effort so that push second adapter shaft (112) to the 4th adapter shaft (114); With

Hill holder (105), when first pivotal axis (13) turns to predetermined angular position so that first Wiper arm (20) and first Wiper blade (30) that is connected thereto are limited the rotation of the 4th connecting rod (104) around first pivotal axis (13) when the turned position of first Wiper blade (30) swings to predetermined midway location, predetermined midway location is positioned between the stop position of the turned position of first Wiper blade (30) and first Wiper blade (30), wherein further rotate so that make first Wiper arm (20) and first Wiper blade (30) that is connected thereto surpasses predetermined midway location when the stop position of first Wiper blade (30) is swung from predetermined angular position when first pivotal axis (13), the rotation of hill holder (105) restriction the 4th connecting rod (104), second connecting rod (102) is roughly parallel to the 4th adapter shaft (114) and moves so that the propulsive effort that makes second adapter shaft (112) overcome actuating device (106) moves away the 4th adapter shaft (114), therefore make the Wiper arm of winning (20) and first Wiper blade (30) that is connected thereto towards the stop position of first Wiper blade (30) motion of translation roughly.

18. Wiper system according to claim 17, wherein actuating device (106) is tension spring (106), its position at contiguous second adapter shaft (112) is connected to the second end of second connecting rod (102), is connected to the second end of the 4th connecting rod (104) simultaneously in the position of contiguous the 4th adapter shaft (114).

19. Wiper system according to claim 17, wherein the propulsive effort of actuating device (106) is configured to limit the remarkable increase at the interval between second adapter shaft (112) and the 4th adapter shaft (114) when the wiping load is equal to or less than scheduled volume, and the aforementioned wiping motion that loads on first Wiper blade (30) begins to be applied on first Wiper blade (30) from wipe surfaces (1a) on the direction.

20. Wiper system according to claim 17 wherein also comprises Wiper motor (10), it can rotate on the rotation direction forward and on the rotation direction backward, and has the output shaft (13) that forms first pivotal axis (13).