阅读说明：本技术 雨刷器 (Windshield wiper ) 是由 吴红安 于 2019-09-12 设计创作，主要内容包括：本发明公开雨刷器,包括护套、设于护套的雨刷片和龙骨,护套开设有卡接槽,雨刷片部分置于卡接槽内,护套位于卡接槽的两侧分别设有第一容置腔和第二容置腔,两个第一弧形弹性片分别容置于第一容置腔内和第二容置腔内,第一弧形弹性片的内弧面面向护套设有卡接槽的一面设置,雨刷器还包括两个第二弧形弹性片,第一容置腔和第二容置腔内分别设有一个第二弧形弹性片,每一个第二弧形弹性片的内弧面设于所述第一弧形弹性片的外弧面,第二弧形弹性片的长度小于第一弧形弹性片的长度,第二弧形弹性片自然状态下的弧形直径大于第一弧形弹性片自然状态下的弧形直径。本发明的雨刷器使雨刷片受力分布更均横,与玻璃更好地贴合,增强其清洁效果。(The invention discloses a wiper, which comprises a protective sleeve, locate the wiper blade and the fossil fragments of sheath, the joint groove has been seted up to the sheath, the joint inslot is arranged in to the wiper blade part, the both sides that the sheath is located the joint groove are equipped with first holding chamber and second holding chamber respectively, two first arc flexure strips hold respectively in first holding intracavity and second holding intracavity, the intrados of first arc flexure strip sets up towards the one side that the sheath was equipped with the joint groove, the wiper still includes two second arc flexure strips, first holding chamber and second holding intracavity are equipped with a second arc flexure strip respectively, the intrados of each second arc flexure strip is located the extrados of first arc flexure strip, the length of second arc flexure strip is less than the length of first arc flexure strip, the arc diameter under the second arc flexure strip natural state is greater than the arc diameter under the first arc flexure strip natural state. The wiper disclosed by the invention has the advantages that the force distribution of the wiper blade is more uniform, the wiper blade is better attached to glass, and the cleaning effect is enhanced.)

1. A windshield wiper comprises a protective sleeve, a windshield wiper blade and a keel, wherein the windshield wiper blade and the keel are arranged on the protective sleeve, the protective sleeve is provided with a clamping groove, the windshield wiper blade is partially arranged in the clamping groove, the protective sleeve is positioned on two sides of the clamping groove and is respectively provided with a first accommodating cavity and a second accommodating cavity, the first accommodating cavity and the second accommodating cavity are arranged at intervals with the clamping groove, the first accommodating cavity and the second accommodating cavity respectively extend from one end of the protective sleeve to the other end of the protective sleeve, the keel is provided with two first arc-shaped elastic blades, the two first arc-shaped elastic blades are respectively accommodated in the first accommodating cavity and the second accommodating cavity, the inner arc surfaces of the first arc-shaped elastic blades are arranged facing to the surface of the protective sleeve, the windshield wiper further comprises two second arc-shaped elastic blades, the first accommodating cavity and the second accommodating cavity are respectively provided with one second arc-shaped elastic blade, and the inner arc surface of each second arc-shaped elastic blade is arranged on the outer arc surface of the first arc, the length of the second arc-shaped elastic piece is smaller than that of the first arc-shaped elastic piece, and the arc diameter of the second arc-shaped elastic piece in the natural state is larger than that of the first arc-shaped elastic piece in the natural state.

2. The wiper as defined in claim 1, wherein said second arcuate elastic piece is located at a middle portion of said first arcuate elastic piece.

3. The wiper as set forth in claim 2, wherein the ratio of the length of said second arcuate elastic piece to the length of said first arcuate elastic piece ranges from 0.6 to 0.8.

4. The wiper as defined in claim 3, wherein the first and second arcuate elastic pieces are steel pieces, the protector is made of rubber, and the first and second arcuate elastic pieces have a thickness ranging from 0.7mm to 1.2 mm.

5. The wiper as claimed in claim 4, wherein the sheath includes a sheath body and two protecting covers detachably connected to two ends of the sheath body, the engaging groove, the first receiving chamber and the second receiving chamber are disposed on the sheath body and extend from one end of the sheath body to the other end of the sheath body, two first through holes, two second through holes and two notches are correspondingly disposed at two ends of the sheath body, the two first through holes are communicated with the first receiving chamber, the two second through holes are communicated with the second receiving chamber, the two notches are communicated with the engaging groove, and when the protecting cover is connected to the sheath body, the protecting cover covers the corresponding first through hole, second through hole and notch.

6. The wiper as defined in claim 5, wherein said protecting cover has a receiving groove, two engaging portions are oppositely disposed in said receiving groove, two ends of said first curved elastic piece are respectively provided with an engaging portion, two ends of said first curved elastic piece are respectively disposed in the corresponding receiving groove through a first through hole, and the engaging portions are adapted to the corresponding engaging portions.

7. The wiper according to any one of claims 1 to 6, wherein said wiper blade includes a connecting portion, a first wiper blade and a second wiper blade provided on both sides of said connecting portion, said connecting portion is provided with a catching groove, said catching groove includes a groove provided in the cover and a catching protrusion provided on an edge of a notch of the groove, said first wiper blade and said second wiper blade are alternatively disposed in the groove, and the catching groove of the connecting portion is fitted with the catching protrusion.

8. The wiper according to claim 7, wherein the first blade has a first protrusion extending from one end of the first blade to the other end of the first blade on opposite sides of the first blade near the end thereof, and/or the second blade has a plurality of second protrusions extending from the head portion near the second blade to the connecting portion on opposite sides of the second blade near the end thereof, the second protrusions being arranged in a spaced-apart manner in order from one end of the second blade to the other end of the second blade.

9. The wiper according to claim 8, wherein the first convex portion has a height in a range of 0.8mm to 1.4mm, the first convex portion has a distance from the head portion of the first blade in a range of 1.6mm to 2.2mm, and/or the second convex portion has a width in a range of 0.3mm to 0.5mm and a length in a range of 10mm to 15mm, the second convex portion has a distance from the head portion of the second blade in a range of 0.3mm to 0.5mm on a side thereof close to the head portion of the second blade, and a gap between adjacent two second convex portions is in a range of 0.7mm to 1.2 mm.

10. The wiper as claimed in claim 8, wherein the wiper blade is made of rubber, two opposite side surfaces of the joint of the first wiper blade and the connecting portion are respectively provided with a first groove, when the first wiper blade swings from 40 ° to 50 °, the end portion of the first wiper blade located in the first groove abuts against the end portion of the connecting portion located in the first groove, two opposite side surfaces of the joint of the second wiper blade and the connecting portion are respectively provided with a second groove, and when the second wiper blade swings from 40 ° to 50 °, the end portion of the second wiper blade located in the second groove abuts against the end portion of the connecting portion located in the second groove.

Technical Field

The invention relates to the technical field of wipers, in particular to a wiper.

Background

The windshield wiper is an important accessory installed on the windshield, and the windshield wiper blade on the windshield wiper is used for sweeping rain, snow and dust which obstruct the view of the windshield. However, because the surface of the windshield glass has a curvature, the edge curvature of some windshield glass is also larger than the middle curvature of the windshield glass, the curvature of the windshield wiper in a natural state is far larger than the edge curvature and the middle curvature of the windshield glass, when the transmission rod is abutted against the middle part of the windshield wiper so that the windshield wiper is contacted with the surface of the windshield glass, two ends of the windshield wiper are firstly contacted with the windshield glass, the force applied to the contact between the windshield glass and two ends of the windshield wiper is larger than the force applied to the middle part of the windshield wiper, and when the two ends of the windshield wiper are tightly attached to the windshield glass, a gap can exist between the middle of the windshield wiper and the windshield glass or the attachment is not tight, so that the cleaning effect is affected, when the transmission rod is adjusted so that the middle of the windshield wiper is tightly attached to the windshield glass, two ends of the windshield wiper can be tightly attached to the windshield glass, can cause certain influence to the normal swing of the wiper blade and can also influence the cleaning effect.

Disclosure of Invention

The invention mainly aims to provide a wiper, aiming at ensuring better fit between a wiper blade and glass and enhancing the cleaning effect of the wiper.

in order to achieve the above object, the present invention provides a wiper, including a sheath, a wiper blade and a keel, the wiper blade and the keel are disposed in the sheath, the sheath is provided with a clamping groove, the wiper blade is partially disposed in the clamping groove, the sheath is disposed at two sides of the clamping groove and is respectively provided with a first accommodating cavity and a second accommodating cavity, the first accommodating cavity and the second accommodating cavity are spaced from the clamping groove, the first accommodating cavity and the second accommodating cavity respectively extend from one end of the sheath to the other end of the sheath, the keel is two first arc-shaped elastic sheets, the two first arc-shaped elastic sheets are respectively accommodated in the first accommodating cavity and the second accommodating cavity, the inner arc surfaces of the first arc-shaped elastic sheets are disposed facing to the surface of the sheath where the clamping groove is disposed, the wiper further includes two second arc-shaped elastic sheets, the first accommodating cavity and the second accommodating cavity are respectively provided with one second arc-shaped elastic sheet, the intrados of each second arc flexure strip is located the extrados of first arc flexure strip, the length of second arc flexure strip is less than the length of first arc flexure strip, and the arc diameter under the second arc flexure strip natural state is greater than the arc diameter under the first arc flexure strip natural state.

Preferably, the second arc-shaped elastic piece is positioned in the middle of the first arc-shaped elastic piece.

Preferably, the length ratio of the second arc-shaped elastic piece to the first arc-shaped elastic piece ranges from 0.6 to 0.8.

Preferably, the first arc-shaped elastic sheet and the second arc-shaped elastic sheet are steel sheets, the sheath is made of rubber materials, and the thickness range of the first arc-shaped elastic sheet and the second arc-shaped elastic sheet is 0.7mm to 1.2 mm.

Preferably, the sheath including the cover body with can dismantle respectively connect in two protecting covers at cover body both ends, the cover body is located to joint groove, first holding chamber and second holding chamber to extend to the other end of the cover body by the one end of the cover body, the both ends correspondence of the cover body is equipped with two first through-holes, two second through-holes and two breachs, two first through-hole intercommunication first holding chamber, two second through-holes intercommunication second holding chambers, two breach intercommunication joint grooves, when the protecting cover is connected in the cover body, the protecting cover simultaneously the lid fits a corresponding first through-hole, second through-hole and breach.

Preferably, the protecting cover is provided with a containing groove, two clamping portions are oppositely arranged in the containing groove, two ends of the first arc-shaped elastic sheet are respectively provided with a clamping portion, two ends of the first arc-shaped elastic sheet respectively penetrate through a first through hole to be arranged in the corresponding containing groove, and the clamping portions are matched with the corresponding clamping portions.

Preferably, the wiper blade includes connecting portion, locates the first doctor-bar and the second doctor-bar of connecting portion both sides, connecting portion are equipped with the draw-in groove, the joint groove is protruding including the card of locating the recess of sheath and locating the notch border of recess, but in the recess was arranged in to first doctor-bar and second doctor-bar alternative, the draw-in groove and the protruding looks adaptation of card of connecting portion.

Preferably, two side surfaces of the first scraping blade close to the end portion of the first scraping blade are oppositely provided with first convex portions, the first convex portions extend from one end of the first scraping blade to the other end of the first scraping blade, and/or two side surfaces of the second scraping blade close to the end portion of the second scraping blade are provided with a plurality of second convex portions, the second convex portions extend from the head portion close to the second scraping blade to the connecting portion, and the second convex portions are sequentially arranged from one end of the second scraping blade to the other end of the second scraping blade at intervals.

Preferably, the height of the first convex part ranges from 0.8mm to 1.4mm, the first convex part ranges from 1.6mm to 2.2mm away from the head of the first wiper blade, and/or the width of the second convex part ranges from 0.3mm to 0.5mm, the length of the second convex part ranges from 10mm to 15mm, the distance between one side of the second convex part close to the head of the second wiper blade and the head of the second wiper blade ranges from 0.3mm to 0.5mm, and the gap between two adjacent second convex parts ranges from 0.7mm to 1.2 mm.

Preferably, the wiper blade is made for the rubber material, first doctor-bar all is equipped with a first cell body with two sides that the junction of connecting portion is relative, first doctor-bar horizontal hunting scope is 40 to 50 when, and the tip butt that first doctor-bar is located first cell body is located the tip that first cell body corresponds in connecting portion, two sides that the junction of second doctor-bar and connecting portion is relative all are equipped with a second cell body, when second doctor-bar horizontal hunting scope is 40 to 50, the tip butt that the second doctor-bar is located the second cell body is located the tip that second cell body corresponds in connecting portion.

The technical scheme of the invention is that the windshield wiper comprises a protective sleeve, a windshield wiper blade and a keel, wherein the windshield wiper blade is arranged in the clamping groove, the protective sleeve is arranged on two sides of the clamping groove and is respectively provided with a first accommodating cavity and a second accommodating cavity, the first accommodating cavity, the second accommodating cavity and the clamping groove are arranged at intervals, the first accommodating cavity and the second accommodating cavity respectively extend from one end of the protective sleeve to the other end of the protective sleeve, the keel is provided with two first arc-shaped elastic sheets, the two first arc-shaped elastic sheets are respectively accommodated in the first accommodating cavity and the second accommodating cavity, the inner arc surfaces of the first arc-shaped elastic sheets are arranged towards the surface of the protective sleeve, which is provided with the clamping groove, the windshield wiper also comprises two second arc-shaped elastic sheets, the first accommodating cavity and the second accommodating cavity are respectively provided with one second arc-shaped elastic sheet, and the inner arc surface of each second arc-shaped elastic sheet is arranged on the outer arc surface of the first arc-shaped elastic sheet, the length of second arc flexure strip is less than the length of first arc flexure strip, and the arc diameter under the second arc flexure strip natural state is greater than the arc diameter under the first arc flexure strip natural state to this crookedness that reduces the middle part of first arc flexure strip keeps the crookedness at first arc flexure strip both ends, and because the wiper blade carries out synchronous bending with first arc flexure strip, it is more all violently to make the wiper blade atress distribute, the wiper blade can both be laminated better with the position of glass butt no matter be border or mid portion, strengthen its clean effect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic perspective view of a wiper according to an embodiment of the present invention;

Fig. 2 is an exploded view of the wiper of fig. 1;

FIG. 3 is a schematic view of a portion of the wiper blade of FIG. 1 with the protective cover omitted from one end thereof;

FIG. 4 is a schematic cross-sectional view of the wiper of FIG. 1 between the cartridge and the sheath;

Fig. 5 is a schematic structural view of the clamping seat, the first arc-shaped elastic piece and the second arc-shaped elastic piece of the wiper of fig. 1 without the protective sleeve;

Fig. 6 is a schematic sectional structure view of a wiper blade of the wiper of fig. 1.

The reference numbers illustrate:

Reference numerals	Name (R)	Reference numerals	Name (R)
				10	Protective sleeve	21	First doctor blade
11	Cover body	211	First convex part
				111	First through hole	212	first trough body
112	Second through hole	22	second doctor blade
				113	Gap	221	Second convex part
12	Protecting cover	222	Second tank body
				121	Containing groove	23	Connecting part
122	Clamping part	231	Clamping groove
				13	Clamping groove	30	Keel
131	Groove	31	First arc-shaped elastic sheet
				132	Clamping projection	311	Engaging part
14	A first accommodating cavity	40	second arc-shaped elastic piece
				15	Second containing cavity	50	Card holder
20	Wiper blade

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

in addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides a wiper.

Referring to fig. 1 to 6, in an embodiment of the present invention, the wiper includes a sheath 10, a wiper blade 20 disposed on the sheath 10, and a keel 30, wherein the sheath 10 is provided with a locking groove 13, the wiper blade 20 is partially disposed in the locking groove 13, the sheath 10 is provided with a first accommodating chamber 14 and a second accommodating chamber 15 on two sides of the locking groove 13, the first accommodating chamber 14 and the second accommodating chamber 15 are spaced apart from the locking groove 13, the first accommodating chamber 14 and the second accommodating chamber 15 extend from one end of the sheath 10 to the other end of the sheath 10, the keel 30 is two first arc-shaped elastic pieces 31, the two first arc-shaped elastic pieces 31 are respectively accommodated in the first accommodating chamber 14 and the second accommodating chamber 15, an inner arc surface of each first arc-shaped elastic piece 31 is disposed facing a surface of the sheath 10 provided with the locking groove 13, the wiper further includes two second arc-shaped elastic pieces 40, first holding chamber 14 and second holding chamber 15 are equipped with a second arc flexure strip 40 in respectively, and the intrados of each second arc flexure strip 40 is located the extrados of first arc flexure strip 31, the length of second arc flexure strip 40 is less than the length of first arc flexure strip 31, and the arc diameter under the second arc flexure strip 40 natural state is greater than the arc diameter under the first arc flexure strip 31 natural state. And the clamping seat 50 is arranged outside the middle part of the protective sleeve 10 of the windshield wiper, the clamping seat 50 is used for being connected with an external driving mechanism, the driving mechanism drives the windshield wiper to move back and forth through the clamping seat 50, and the driving mechanism presses the middle parts of the first arc-shaped elastic sheet 31 and the second arc-shaped elastic sheet of the windshield wiper through the clamping seat 50, so that the windshield wiper sheet 20 is abutted against the glass surface. Pass through with this the length of second arc flexure strip 40 is less than the length of first arc flexure strip 31, the arc diameter under the second arc flexure strip 40 natural state is greater than the arc diameter under the first arc flexure strip 31 natural state, reduce the crookedness at the middle part of first arc flexure strip 31 and keep the crookedness at first arc flexure strip 31 both ends, and because wiper blade 20 carries out synchronous bending with first arc flexure strip 31, make wiper blade 20 atress distribute more evenly violently, wiper blade 20 can both be laminated better with the position of glass butt no matter be the border or mid portion, strengthen its clean effect.

Wherein the first arc-shaped elastic sheet 31 and the second arc-shaped elastic sheet 40 are made of the same material, preferably steel sheets, to enhance the corrosion resistance, the sheath 10 is made of rubber, the wiper sheet 20 is made of rubber, the lengths of the wiper sheet 20 and the first arc-shaped elastic sheet 31 are the same, the sheath 10 and the wiper sheet 20 are synchronously bent with the first arc-shaped elastic sheet 31, the thicknesses of the first arc-shaped elastic sheet 31 and the second arc-shaped elastic sheet 40 are in the range of 0.7mm to 1.2mm, preferably, the thicknesses of the first arc-shaped elastic sheet 31 and the second arc-shaped elastic sheet 40 are both 1mm, the widths of the first arc-shaped elastic sheet 31 and the second arc-shaped elastic sheet 40 are equal, the heights of the first accommodating cavity 14 and the second accommodating cavity 15 are slightly larger than the sum of the thicknesses of the first arc-shaped elastic sheet 31 and the second arc-shaped elastic sheet 40, if the former is larger than 0.1mm to 0.3mm, so that the first arc-shaped elastic sheet 31 and the second arc-shaped elastic sheet 40 are not, making its structure more stable.

Wherein the second arc-shaped elastic piece 40 is positioned in the middle of the first arc-shaped elastic piece 31. The range of the length ratio of the second arc-shaped elastic piece 40 to the first arc-shaped elastic piece 31 is 0.6-0.8, preferably, the length ratio of the second arc-shaped elastic piece 40 to the first arc-shaped elastic piece 31 is 0.7, and the lengths of the two ends of the first arc-shaped elastic piece 31, which are respectively longer than the second arc-shaped elastic piece 40, can be set to be equal, so that the wiper blade 20 and the first arc-shaped elastic piece 31 are bent symmetrically when being bent synchronously, and one end of the first arc-shaped elastic piece 31, which is longer than the second arc-shaped elastic piece 40, can also be longer than the other end of the first arc-shaped elastic piece 31 by the length thereof, which is longer than the second arc-shaped elastic piece 40, as required, so that one end of the wiper blade 20 corresponding to the former end is arranged close to the glass edge. Therefore, the force distribution of the wiper blade 20 is more uniform, the wiper blade 20 is better attached to the glass, and the cleaning effect of the wiper blade is enhanced.

Referring to fig. 1 to 2, preferably, the sheath 10 includes the cover body 11 and can dismantle respectively connect in two protecting covers 12 at the cover body 11 both ends, the joint groove 13, first holding chamber 14 and second holding chamber 15 are located the cover body 11 to extend to the other end of the cover body 11 by the one end of the cover body 11, the both ends correspondence of the cover body 11 is equipped with two first through-holes 111, two second through-holes 112 and two breach 113, two first through-hole 111 intercommunication first holding chamber 14, two second through-holes 112 intercommunication second holding chambers 15, two breach 113 intercommunication joint groove 13, when the protecting cover 12 is connected in the cover body 11, the protecting cover 12 covers in corresponding a first through-hole 111, second through-hole 112 and breach 113 simultaneously. The protecting cover 12 may be made of rubber, and the protecting cover 12 is convenient for protecting the ends of the wiper blade 20, the first arc-shaped elastic piece 31 and the second arc-shaped elastic piece 40. Further, the length of the sheath 11 is equal to the length of the second arc-shaped elastic piece 40, so that the second arc-shaped elastic piece 40 can be conveniently placed or taken out, and the use is more convenient.

Further, the protecting cover 12 is provided with a containing groove 121, two clamping portions 122 are relatively arranged in the containing groove 121, two ends of the first arc-shaped elastic sheet 31 are respectively provided with a clamping portion 311, two ends of the first arc-shaped elastic sheet 31 respectively penetrate through the first through hole 111 and are arranged in the corresponding containing groove 121, and the clamping portions 311 are matched with the corresponding clamping portions 122. The clamping portion 122 may be a convex portion, the engaging portion 311 may be a hole adapted to the convex portion, and the protecting cover 12 may further fix the ends of the two first arc-shaped elastic pieces 31, so that the ends of the wiper blade 20 are stressed more evenly, the wiper blade 20 is better attached to the glass, and the cleaning effect is enhanced.

Referring to fig. 3 and 4, preferably, the wiper blade 20 includes a connecting portion 23, and a first wiper blade 21 and a second wiper blade 22 disposed on two sides of the connecting portion 23, the connecting portion 23 is provided with a locking groove 231, the locking groove 13 includes a groove 131 disposed on the sheath 10 and a locking protrusion 132 disposed on a notch edge of the groove 131, one of the first wiper blade 21 and the second wiper blade 22 is disposed in the groove 131, the other is disposed outside the locking groove 13 for use, and the locking groove 231 of the connecting portion 23 is adapted to the locking protrusion 132. Wherein the connecting portion 23, the first blade 21 and the second blade 22 are integrally formed. The first and second blades 21 and 22 can be easily replaced, and the use is more convenient.

Referring to fig. 4, preferably, two side surfaces of the first blade 21 near the end thereof are oppositely provided with a first protrusion 211, the first protrusion 211 extends from one end of the first blade 21 to the other end of the first blade 21, and/or two side surfaces of the second blade 22 near the end thereof are provided with a plurality of second protrusions 221, the second protrusions 221 extend from a head portion near the second blade 22 to a position near the connecting portion 23, and the second protrusions 221 are sequentially arranged at intervals from one end of the second blade 22 to the other end of the second blade 22. The height range of the first protrusion 211 is 0.8mm to 1.4mm, the range of the first protrusion 211 from the head of the first wiper 21 is 1.6mm to 2.2mm, and/or the width range of the second protrusion 221 is 0.3mm to 0.5mm, the length is 10mm to 15mm, the range of the side of the second protrusion 221 close to the head of the second wiper 22 from the head of the second wiper 22 is 0.3mm to 0.5mm, and the gap between two adjacent second protrusions 221 is 0.7mm to 1.2 mm. The first scraping blade 21 can be used for scraping sand and cleaning, and when the first scraping blade 21 is used, the head part of the first scraping blade 21 and the first convex part 211 are in contact with glass, so that the head part and the side surface of the first scraping blade 21 are prevented from being in contact with the glass, the contact area between the first scraping blade 21 and the glass is reduced, noise is reduced, and the use is more convenient; and when the wiper swings once, the head of the first wiper blade 21 and the first protrusion 211 realize two times of cleaning, so that the cleaning is more thorough, and the cleaning effect is enhanced. The second scraping blade 22 can be used for cleaning water mist, when the second scraping blade 22 is used, the head part and the second convex part 221 of the second scraping blade 22 are contacted with the glass, and the head part and the side surface of the second scraping blade 22 can be prevented from being contacted with the glass, so that the contact area between the second scraping blade 22 and the glass is reduced, noise is reduced, and the use of the second scraping blade is more convenient.

Referring to fig. 6, preferably, the wiper blade 20 is made of rubber, two opposite side surfaces of the joint of the first wiper blade 21 and the connecting portion 23 are respectively provided with a first groove 212, when the horizontal swing range of the first wiper blade 21 is 40 ° to 50 °, the end portion of the first wiper blade 21 located in the first groove 212 abuts against the end portion of the connecting portion 23 located in the first groove 212, two opposite side surfaces of the joint of the second wiper blade 22 and the connecting portion 23 are respectively provided with a second groove 222, and when the horizontal swing range of the second wiper blade 22 is 40 ° to 50 °, the end portion of the second wiper blade 22 located in the second groove 222 abuts against the end portion of the connecting portion 23 located in the second groove 222. Preferably, the horizontal swing range of the first blade 21 is 45 °, the horizontal swing range of the second blade 22 is 45 °, so that when the first blade 21 is used, the head portion and the first protrusion 211 of the first blade 21 can better contact with glass, and when the second blade 22 is used, the head portion and the second protrusion 221 of the second blade 22 can better contact with glass, thereby better realizing the glass cleaning effect and noise reduction, and facilitating the use.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.