CN108944810B

CN108944810B - Wiper blade and wiper

Info

Publication number: CN108944810B
Application number: CN201810779943.7A
Authority: CN
Inventors: 陆耀明
Original assignee: Jiaxing Yixia Auto Parts Technology Co ltd
Current assignee: Jiaxing Yixia Auto Parts Technology Co ltd
Priority date: 2018-07-16
Filing date: 2018-07-16
Publication date: 2021-03-30
Anticipated expiration: 2038-07-16
Also published as: CN108944810A

Abstract

The invention discloses a wiper blade which is low in use noise, and rainwater is not easy to attach to a windshield and can slide along the windshield. The utility model provides a wiper blade, includes the portion of scraping, links together and is located the installation department of scraping the portion top with scraping the portion, scrapes a structure with installation department an organic whole, at the windscreen wiper scrape the portion of scraping including the component of following parts by mass: 10-40 parts of graphite, 5-20 parts of boron nitride, 3-15 parts of zinc oxide whiskers, 55-75 parts of a silicone rubber composition, 8-15 parts of polytetrafluoroethylene and 8-15 parts of zinc oxide. The invention also provides a windscreen wiper with the windscreen wiper blade.

Description

Wiper blade and wiper

Technical Field

The invention belongs to the technical field of windscreen wiper devices for wiping off rainwater, and particularly relates to a wiper blade. The invention also relates to a windscreen wiper

Background

The windscreen wiper is an essential part on an automobile and is used for wiping off rainwater on a windshield. At present, the windscreen wipers on the market mainly comprise the following parts:

for example: chinese patent application publication No. CN1404449, published as 03/19/2003, discloses a wiper blade for cleaning a windscreen of a vehicle, in particular a motor vehicle, comprising a longitudinally extending wiper strip of a rubber-elastic material and at least one spring clip plate connected to the wiper strip, said spring clip plate being curved such that the wiper strip has different curvatures on both sides of a connecting element for connection to a windscreen wiper).

Chinese patent application publication No. CN101898545A, published 12/01/2010, discloses a covered windshield wiper including a hub, a wiper arm having spaced apart side walls, and a pivot pin connecting the wiper to the hub. A pair of abutments coaxial with the pivot pin space the side walls of the wiper arm from the hub. The one-piece molded cover has a U-shaped cross-section providing a base wall that overlaps the entire length of the wiper arm and wiper blade and laterally spaced side walls that depend from the base wall and conceal the wiper arm and wiper blade. A hook molded on the cover engages the end of the wiper arm. A pair of snap tabs molded on the cover extend into the space between the sidewall of the wiper arm and the hub to snap onto the pair of abutments and thereby removably attach the cover to the wiper.

In the above two prior arts, both the spring clip plate and the wiper holder as the support blades are disposed outside the wiper blade, so that most of the surface of the wiper blade is shielded and the color of the wiper blade cannot be clearly shown.

Chinese patent application publication No. CN103476645A, published as 2013, 12 and 25, discloses a windscreen wiper device, particularly for a motor vehicle, comprising a resilient, elongated carrier element which can be placed adjacent a windscreen to be wiped, and an elongated wiper blade of a flexible material, which wiper blade comprises at least one longitudinal groove, in which groove at least one longitudinal strip of the carrier element is arranged, which windscreen wiper device comprises a connecting device for an oscillating arm, wherein said oscillating arm can be pivotally connected to said connecting device about a pivot axis near one end thereof, wherein it is particularly characterized in that said connecting device is connected to said flexible material of said wiper blade by at least one pin, wherein said pin cooperates with a recess provided along an outer edge of said longitudinal strip, so as to prevent said wiper blade from being relative to said longitudinal strip in a longitudinal direction of the wiper blade at the location of interconnection of said connecting device with said wiper blade Any movement of (2).

Although, in the above-mentioned patent application, the longitudinal strip as the supporting structure of the wiper blade is disposed inside the wiper blade, the connecting device is an integral structural member, which needs to be elastically deformed to be assembled to the wiper blade, thereby requiring a material with low rigidity to make the connecting device, so that the connecting device is not firmly connected to the wiper blade and is easily swung.

In addition, the wiper blade in the prior art is made of a silicon rubber material, and is coated outside the wiper blade to improve the lubricating capability of the wiper blade, but after the wiper blade is used for a period of time, a coated layer is consumed, at the moment, the noise of the wiper blade is high when the wiper blade is used for wiping a windshield, raindrops are always attached to the windshield in rainy days, the wiper blade slides along the windshield only when the raindrops are large, and part of the wiper blade is also attached to the windshield in the sliding process.

Disclosure of Invention

The invention aims to provide a wiper blade which has low use noise, is not easy to attach rainwater on a windshield, and can slide along the windshield; on the other hand, the anti-aging capacity of the windscreen wiper is improved, and the service life is prolonged; on the other hand, the color of the wiper blade is enriched.

In order to solve the technical problem, the invention aims to realize that:

the utility model provides a wiper blade, includes the portion of scraping, links together and is located the installation department of scraping the portion top with scraping the portion, scrapes a structure with installation department an organic whole, at the windscreen wiper scrape the portion of scraping including the component of following parts by mass: 10-40 parts of graphite, 5-20 parts of boron nitride, 3-15 parts of zinc oxide whiskers, 55-75 parts of a silicone rubber composition, 8-15 parts of polytetrafluoroethylene and 8-15 parts of zinc oxide.

On the basis of the above scheme and as a preferable scheme of the scheme: 30 parts of graphite, 10 parts of boron nitride, 5 parts of zinc oxide whisker, 65 parts of silicone rubber composition, 10 parts of polytetrafluoroethylene and 10 parts of zinc oxide.

On the basis of the above scheme and as a preferable scheme of the scheme: the silicone rubber composition comprises the following components in percentage by mass: 2-8% of hydrogen-containing silicone oil, 5-15% of hydroxyl silicone oil, 1-14% of vinyl silicone oil, 20-40% of white carbon black and the balance of silicone rubber.

On the basis of the above scheme and as a preferable scheme of the scheme: the silicone rubber is methyl vinyl silicone rubber.

On the basis of the above scheme and as a preferable scheme of the scheme: the zinc oxide whisker is a tetrapod-like zinc oxide whisker.

On the basis of the above scheme and as a preferable scheme of the scheme: the wiper blade also comprises the following components in parts by mass: 3-8 parts of organopolysiloxane.

On the basis of the above scheme and as a preferable scheme of the scheme: the mounting part is made of silicon rubber or gas rubber material; the installation department with scrape the portion and adopt two extrusion process to make an organic whole structure or make an organic whole structure through the bonding.

On the basis of the above scheme and as a preferable scheme of the scheme: the preparation material of the silicon rubber or the gas rubber comprises toner.

The wiper blade comprises: a blade mount and a wiper arm attachment mount to which the wiper blade is mounted for attaching the blade mount and the wiper blade to the wiper arm such that the blade mount and the wiper blade swing with the wiper arm.

On the basis of the above scheme and as a preferable scheme of the scheme: the mounting part is made of rubber materials, and a receiving cavity extending along the length direction of the mounting part is arranged in the mounting part; the wiper mounting frame is of a belt-shaped structure, the wiper mounting frame is inserted into the receiving cavity to be coated by the mounting part, a first opening and a second opening are arranged in the middle of the mounting part, the first opening is located on one edge of the mounting part, the second opening is located on the other edge of the mounting part, the first opening penetrates through the cavity wall of the receiving cavity, the first opening enables the local upper surface, the local first side surface and the local lower surface of the wiper mounting frame to be exposed, the second opening also penetrates through the cavity wall of the receiving cavity, and the second opening enables the local upper surface, the local second side surface and the local lower surface of the wiper mounting frame to be exposed;

the wiper arm connecting seat comprises a fastener and a connecting seat, the connecting seat is fixedly connected with the fastener, the fastener comprises a first fastener and a second fastener, and the first fastener and the second fastener are hooked with each other to form detachable connection or form rotating connection in the width direction of the fastener; the first fastener is provided with a first cavity, the opening of the first cavity faces the second fastener, one edge of the mounting part is inserted into the first cavity, the first opening is located in the first cavity, a first positioning block with an I-shaped or dovetail-shaped cross section is further arranged in the first cavity, a first notch exposed in the first opening is formed in one edge of the scraper mounting frame, the first notch is used for the first positioning block to be embedded into, and the scraper mounting frame is used for limiting the first positioning block in the thickness direction; be equipped with the second cavity on the second fastener, the opening of second cavity is towards first fastener, and the second cavity supplies another border of installation department to insert, and the second opening is located the second cavity still be equipped with the second locating piece that the cross-section is I shape or dovetail in the second cavity be equipped with the second notch that exposes in the second opening on another border of doctor-bar mounting frame, the second notch supplies the embedding of second locating piece, the doctor-bar mounting frame is still right on the thickness direction the second locating piece carries on spacingly.

Compared with the prior art, the invention has the outstanding and beneficial technical effects that:

the scraping part of the wiper blade adopts high-content lubricating material, so that the lubricity is improved, and when the wiper blade wipes a windshield, the noise is obviously smaller

Drawings

Fig. 1 is a schematic diagram of an explosive structure of the present invention.

Fig. 2 is an enlarged view of a portion of the structure of fig. 1.

Fig. 3 is a schematic structural view of the wiper arm connecting seat of the present invention.

Fig. 4 is a schematic structural view of the fastener of the present invention.

Fig. 5 is a schematic structural view of a first fastening member of the present invention.

FIG. 6 is a schematic view of a second fastener of the present invention.

Fig. 7 is a schematic structural diagram of the connecting socket of the present invention.

Fig. 8 is a schematic structural view of the blade mount of the present invention.

Fig. 9 is a schematic view showing an assembled structure of the blade mount and the wiper blade of the present invention.

FIG. 10 is a schematic view of a first fastener with a dovetail-shaped positioning block in cross-section according to the present invention.

FIG. 11 is a schematic view of a second fastener with a dovetail-shaped positioning block in cross-section according to the present invention.

Detailed Description

In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments obtained by a person skilled in the art without making any inventive step, based on the given embodiments, fall within the scope of protection of the present application.

In the description of the present application, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

In the description of the present application, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated.

The invention discloses a windscreen wiper which is assembled on a windscreen wiper arm, wherein the swinging windscreen wiper arm drives the windscreen wiper to swing back and forth on a windscreen so as to wipe rainwater on the windscreen.

The wiper blade of the present invention includes: including a wiper blade 100, a blade mounting bracket 200, and a wiper arm attaching base 300. The wiper blade 100 is also referred to as a rubber strip, a wiper strip, or a squeegee. The wiper blade 100 is attached to a windshield, and when the wiper blade swings with a wiper arm (not shown), the wiper blade 100 scrapes off rainwater on the windshield. In this embodiment, the wiper blade 100 includes a mounting portion 1011 and a wiping portion 1012, the mounting portion 1011 and the wiping portion 1012 are connected together to form an integral structure, and the mounting portion 1011 and the wiping portion 1012 are manufactured into an integral structure by a double extrusion process; the receiving cavity 101 is provided in the mounting portion 1011. The wiping portion 1012 is a portion of the wiper blade 100 that contacts the windshield, and the mounting portion 1011 is for connecting the blade mounting bracket 200 to the fastening member 30. For this, the mounting portion 1011 and the scraping portion 1012 may be separately provided with a preparation component. Typically, the mounting portion 1011 is made of a material including silicon rubber or gas rubber.

The material for the mounting portion 1011 also includes toner. The windscreen wiper can be customized according to individuation through toner, so that the windscreen wiper is richer in color, and the color of the windscreen wiper is coordinated with the color of a vehicle body.

As another example of achieving the coupling of the mounting portion 1011 and the scraping portion 1012, the mounting portion 1011 and the scraping portion 1012 are made into an integral structure by adhesion.

And a wiper blade mounting bracket 200 connected to the wiper blade 100 for extending the flexible wiper blade 100.

A wiper arm connecting base 300 for coupling the blade mounting frame 200 and the wiper blade 100 to a wiper arm so that the blade mounting frame 200 and the wiper blade 100 swing along with the wiper arm.

In the present embodiment, referring to fig. 8, the blade mount 200 has a belt-like structure, has a flat and long bar shape, is made of a metal material, has a certain elasticity in the front-rear direction, and has rigidity in the left-right direction.

With respect to the fitting structure of the blade mount 200 and the wiper blade 100, referring to fig. 9, a receiving cavity 101 extending in the length direction thereof is provided in the mounting portion 1011. The blade mount 200 is inserted into the receiving cavity 101 such that the blade mount 200 is covered by the mounting portion 1011.

It should be noted that the coating does not require that all of the surface of the blade mount 200 be covered by the mounting portion 1011 between the blade mount 200 and the mounting portion 1011, and that a portion of the surface of the blade mount 200 may not be covered by the mounting portion 1011, but the blade mount 200 does not fall out perpendicular to the length of the mounting portion 1011.

The wiper arm coupling seat 300 includes a fastener 30 and a coupling seat 3001. The connector block 3001 is provided with a recessed cavity 3002, shown in fig. 7, which is generally of a trough-like configuration. The fastener 30 is received in the recessed cavity 3002, and the connecting seat 3001 is engaged with the fastener 30. Referring to fig. 4 and 7, a wedge-shaped locking leg 301 is provided on a side surface of the fastening member 30, and a fastening groove 3003 is provided on the connecting seat. Through the structure of bayonet 301 and catching groove 3003, after connecting seat 3001 and fastener 30 blocked joint mutually, prevent that its two from deviating from.

Referring to fig. 2 and 9, a first gap 11 is formed in the middle of the mounting portion 1011, the first gap 11 is located at an edge 1001 of the mounting portion 1011, the first gap 11 penetrates through a cavity wall 1010 of the receiving cavity 101, and the first gap 11 exposes a part of the upper surface 201, a part of the first side surface 202 and a part of the lower surface 203 of the blade mounting bracket 200.

A second gap 12 is formed in the middle of the wiper blade 100, the second gap 12 is located at the other edge 1002 of the mounting portion 1011, the second gap 12 also penetrates through the cavity wall 1010 of the receiving cavity 101, and the second gap 12 exposes a part of the upper surface 201, a part of the second side surface 204 and a part of the lower surface 203 of the blade mounting bracket 200.

As shown in fig. 2, a first gap 11 and a second gap 12 are located on opposite edges of the mounting portion 1011.

Referring to fig. 2, 3, 4, 5, and 6, in the present embodiment, the fastening member 30 includes a first fastening member 31 and a second fastening member 32, and the first fastening member 31 and the second fastening member 32 are hooked to each other and form a detachable connection. The first fastener 31 and the second fastener 32 are combined together and fastened outside the mounting portion 1011 for assembling the connecting seat 3001.

Referring to fig. 5 and 6, in an embodiment, the first fastening member 31 and the second fastening member 32 are connected by a tenon 41 and a mortise 42, and the tenon 41 and the mortise 42 form a clearance fit. As shown in FIG. 5, the tenon 41 includes a head 401 and a neck 402, and the outer neck of the head 401 is larger than the outer diameter of the neck 402. As shown in fig. 6, mortise 402 has a shape corresponding to the outer shape of tenon 401, and includes a structure with a through slot 404 having an opening 403, the through slot 404 having an inner diameter slightly larger than the outer diameter of head 401, such that head 401 is received in through slot 404. The inner diameter of the opening 403 is larger than the outer diameter of the neck 402 and smaller than the outer diameter of the head 401, so that the neck 402 is inserted into the opening 403 to place the head 401 in the through groove 404.

As another implementation structure of the mortise, the mortise is formed by two positioning columns extending upwards. The neck part passes through the position between the two positioning columns, so that the head part hooks the positioning columns. Thereby, the first fastening member 31 and the second fastening member 32 are connected in the width d1 direction.

Referring to fig. 4 and 5, in an embodiment, the first fastening member 31 is provided with a first concave cavity 311, as shown in the figure, the first concave cavity 311 is formed by bending one edge of the first fastening member downward and then bending the edge of the first concave cavity toward the second fastening member. The opening 3110 of the first cavity 311 faces the second fastener 32, and the first cavity 311 is tightly inserted by an edge 1001 of the mounting portion 1011. The height d2 of the first cavity 311 in the vertical direction is slightly smaller than the height of the rim, and after the rim is inserted into the first cavity 311, the rim forms a tight fit with the first cavity 311, and thus the rim is elastically deformed and compressed.

After the first fastener 31 is fastened to the mounting portion 1011, the first opening 11 is located in the first cavity 311. That is, after the engagement, the peripheral edge of the first fastening member 31 overlaps the peripheral edge of the first notch 11, and the inner surface of the first fastening member 31 contacts the outer surface of the mounting portion 1011.

A first positioning block 312 with an i-shaped cross section is further disposed in the first cavity 311. Referring to fig. 2 and 8, a first notch 21 exposed in the first slit 11 is formed at one edge of the blade mount 200, the first notch 21 is inserted by the first positioning block 312, and the blade mount 200 further limits the first positioning block 312 in the thickness direction. Specifically, the edge 210 of the first notch 21 is inserted into the cavity 2120 of the first positioning block 312, the cavity height d3 of the first notch 21 is slightly larger than the thickness of the blade mounting bracket 200, and the moving gap between the two is smaller than the mortise height d4, so that the first fastening member 31 is positioned in the thickness direction of the blade mounting bracket 200. On the other hand, the vertical portion 3121 of the first positioning block 312 having an i-shaped cross section is fitted into the first notch 21 to obtain the positioning of the first seizing means 31 in the direction of the length d5 of the blade mounting bracket 200.

The first positioning block 312 of the above embodiment has a dovetail-shaped cross section. In this way, the dovetail structure also enables positioning in the longitudinal direction of the blade mount 200 and in the thickness direction of the blade mount 200.

Referring to fig. 4 and 6, the second fastening member 32 is provided with a second cavity 321, and as shown in the drawings, the second cavity 321 is formed by bending one edge of the second fastening member downwards and then bending the edge of the second fastening member towards the first fastening member. The opening 3210 of the second cavity 321 faces the first fastener 31, and the second cavity 321 is tightly inserted into the other edge 1002 of the mounting portion 1011. The height of the second cavity 321 in the vertical direction is slightly less than the height of the rim, and after the rim is inserted into the second cavity 321, the rim forms a tight fit with the second cavity 321, so that the rim is elastically deformed and compressed.

After the two fasteners 30 are fastened to the mounting portion 1011, the second opening 12 is located in the second cavity 321. That is, after the engagement, the peripheral edge of the second fastening member 32 is placed on the peripheral edge of the second notch 12, and the inner surface of the second fastening member 32 is in contact with the outer surface of the mounting portion 1011.

A second positioning block 322 with an i-shaped cross section is further disposed in the second cavity 321. Referring to fig. 2 and 8, a second notch 22 exposed in the second notch 12 is formed on one edge of the blade mount 200, the second notch 22 is used for a second positioning block 322 to be inserted, and the blade mount 200 further limits the second positioning block 322 in the thickness direction. Specifically, the edge 220 of the second notch 22 is inserted into the cavity 3220 of the second positioning block 322, the height of the cavity of the second notch 22 is slightly greater than the thickness of the blade mounting bracket 200, and the moving gap between the two is smaller than the height of the mortise, so that the second fastening member 32 is positioned in the thickness direction of the blade mounting bracket 200. On the other hand, the vertical portion 3221 of the second positioning block 322 having an i-shaped cross section is inserted into the second recess 22, so that the second fastening member 32 is positioned in the longitudinal direction of the blade mounting bracket 200.

It should be noted that there is a space between the bent portion of the first fastening member 31 toward the second fastening member and the bent portion of the second fastening member toward the first fastening member. The width of the bent portion of the first clip 31 in the width direction of the clip is set according to the amount of deformation of the wiper blade caused by the external force applied during the assembly, and similarly, the width of the bent portion of the second clip 32 in the width direction of the clip is set according to the amount of deformation of the wiper blade caused by the external force applied during the assembly. Typically, the two widths are made to be uniform so that the first and second fastening components are assembled without being installed in sequence.

The second positioning block 322 of the above embodiment has a dovetail-shaped cross section. In this way, the dovetail structure also enables positioning in the longitudinal direction of the blade mount 200 and in the thickness direction of the blade mount 200.

It should be noted that, in the present embodiment, the first positioning block 312 and the second positioning block 322 both have a structure with an i-shaped cross section. As another embodiment, the first positioning block 312 and the second positioning block 322 are positioning blocks with different cross-sectional structures, for example, the first positioning block 312 has an i-shaped cross-section, and the second positioning block 322 has a dovetail-shaped cross-section.

During assembly, the second positioning block 322 on the second fastener 32 is aligned with the second notch 22 to fasten the second fastener 32 to the mounting portion 1011, and then an external force is applied to push the second fastener 32 toward the first fastener 31, at this time, the contact portion (mainly the right edge of the mounting portion 1011) between the mounting portion 1011 and the second fastener 32 deforms under a force to give up a space for fastening the first fastener 31 to the mounting portion 1011, so that the end of the first fastener 31 away from the tenon is entirely located on the left side of the mounting portion 1011, at this time, the first fastener 31 is assembled to mount the tenon of the first fastener 31 into the mortise of the second fastener 32, and at the same time, the end of the first fastener 31 away from the tenon is located below the edge of the mounting portion 1011 for fastening the first fastener 31, so as to release the applied external force, and the second fastener 32 carries the first fastener 31 to move to the right side integrally with the elastic restoring force of the mounting portion 1011, therefore, the first fastener 31 is fastened to the edge of the mounting portion 1011, and the first positioning block 312 is inserted into the first notch 21. At this time, the second fastening member 32 is restricted by the first fastening member 31, and the second positioning block 322 on the second fastening member 32 is still embedded in the second recess 22. Thus, the fastener 30 is positioned in the longitudinal direction of the blade mount 200 and in the thickness direction of the blade mount 200. In addition, the fastener 30 is positioned in the width direction of the blade mounting bracket 200, since the fastener 30 is in close contact with the mounting portion 1011, the fastener 30 can also be positioned in the width d6 direction of the mounting portion 1011. Thus, the fastener 30 firmly connects the blade mounting frame 200 and the wiper blade 100 together.

It will be appreciated that the mounting portion 1011 alone (and most significantly) is compressed during assembly to provide space for assembly, thereby increasing the rigidity of the fastener 30 when the fastener 30 is manufactured, and making the attachment of the fastener 30 to the blade mounting bracket 200 and the wiper blade 100 more secure.

Referring to fig. 4, in the present embodiment, a first inclined surface 313 inclined upward is provided on a lower surface of the first fastening member 31 adjacent to an edge of the second fastening member 32. As shown, the first ramp 313 is located to the left of the tenon. Through adopting this kind of structure, when the assembly, can make first fastener 31 perk, and can be earlier with the tenon hook on the mortise, the first fastener 31 assembly of being convenient for. Similarly, a second inclined plane 323 which is inclined upwards is arranged on the lower surface of the second fastening member 32 adjacent to the edge of the first fastening member 31. As shown, the second bevel 323 is located on the right side of the mortise.

In one embodiment, a decorative cover is fixed to both ends of the mounting portion 1011. Generally, decorative covers are fitted to both ends of the receiving cavity 101 to close the receiving cavity 101.

In the present invention, the preparation components of the mounting portion 1011 and the wiping portion 1012 are separately configured when preparing the wiper blade. The preparation components of the scraping part can adopt the following mixture ratio in the following embodiment:

example one

The scraping part comprises the following components in parts by mass: 10 parts of graphite, 5 parts of boron nitride, 3 parts of zinc oxide whisker, 55 parts of a silicon rubber composition, 8 parts of polytetrafluoroethylene and 8 parts of zinc oxide. The silicon rubber composition comprises the following components in percentage by mass: 2% of hydrogen-containing silicone oil, 5% of hydroxyl silicone oil, 1% of vinyl silicone oil, 20% of white carbon black and the balance of silicone rubber.

Example two

The scraping part comprises the following components in parts by mass: 40 parts of graphite, 20 parts of boron nitride, 15 parts of zinc oxide whisker, 75 parts of silicone rubber composition, 15 parts of polytetrafluoroethylene and 15 parts of zinc oxide. The silicon rubber composition comprises the following components in percentage by mass: 8% of hydrogen-containing silicone oil, 15% of hydroxyl silicone oil, 14% of vinyl silicone oil, 40% of white carbon black and the balance of silicone rubber.

EXAMPLE III

The scraping part comprises the following components in parts by mass: 30 parts of graphite, 10 parts of boron nitride, 5 parts of zinc oxide whisker, 65 parts of silicone rubber composition, 10 parts of polytetrafluoroethylene and 10 parts of zinc oxide. The silicon rubber composition comprises the following components in percentage by mass: 8% of hydrogen-containing silicone oil, 10% of hydroxyl silicone oil, 4% of vinyl silicone oil, 30% of white carbon black and the balance of silicone rubber.

Example four

The scraping part comprises the following components in parts by mass: 25 parts of graphite, 8 parts of boron nitride, 6 parts of zinc oxide whisker, 68 parts of silicone rubber composition, 12 parts of polytetrafluoroethylene, 9 parts of zinc oxide and 3 parts of organopolysiloxane. The silicon rubber composition comprises the following components in percentage by mass: 5% of hydrogen-containing silicone oil, 7% of hydroxyl silicone oil, 5% of vinyl silicone oil, 25% of white carbon black and the balance of silicone rubber.

EXAMPLE five

The scraping part comprises the following components in parts by mass: 30 parts of graphite, 10 parts of boron nitride, 5 parts of zinc oxide whisker, 65 parts of silicone rubber composition, 10 parts of polytetrafluoroethylene, 10 parts of zinc oxide and 9 parts of organopolysiloxane. The silicon rubber composition comprises the following components in percentage by mass: 8% of hydrogen-containing silicone oil, 10% of hydroxyl silicone oil, 4% of vinyl silicone oil, 30% of white carbon black and the balance of silicone rubber.

In the above embodiment, the graphite is 3500 mesh, the boron nitride is 5000-7000 mesh, the zinc oxide whisker is 2000 mesh, and the zinc oxide is 1000-2000 mesh.

In the components of the scraping part of the embodiment, the white carbon black is used for reinforcing and has enhanced adhesive force, tear resistance, heat resistance and ageing resistance; graphite as a wear-resistant lubricating material; boron nitride, a solid lubricant, as a fixed lubricant. Zinc oxide whisker as reinforcing and toughening agent; the polytetrafluoroethylene reduces the friction coefficient of the material, and improves the lubricity, wear resistance and non-adhesiveness of the material; the zinc oxide is used as a reinforcing agent and a vulcanization activator, and is beneficial to vulcanization and molding of the scraping part.

In general, the graphite and boron nitride in the above-mentioned parts by mass cause the blade portion to lose elasticity and strength, and the blade portion cannot be brought into close contact with the windshield. However, in the above examples, the reinforcing and toughening were achieved by adding zinc oxide whiskers, zinc oxide, and white carbon black, and even though the contents of graphite and boron nitride were high, the blade portion could still ensure sufficient elasticity and strength.

Due to the improved lubricity, the noise is significantly less when the wiper portion wipes the windshield.

The wiper blade of the embodiment is used for a water spraying experiment, and the experimental conditions are as follows: vehicles of the same brand model were selected, one of which was used as a comparative example, and the wiper blades of the above-described examples were respectively fitted to the remaining five vehicles. Then, the wiper blade of each vehicle is wiped clean with a cloth. Then, the wiper function is started, and the wiper reciprocates on the windshield for 15 seconds. And then the wiper function is turned off. Spraying all vehicles simultaneously, spraying tap water onto the windshield by using a spray header, and observing the condition of water drops attached to the windshield after spraying for several seconds, wherein the results are as follows: the windshield of the vehicle without replacing the windscreen wiper is fully distributed with water drops; on the vehicle with the wiper of the embodiment replaced, the windshield of the vehicle is basically free of water drops, and the water drops formed by spraying slide down along the windshield.

From this experiment, it can be seen that after the wiper blade in the above embodiment wipes the windshield, the material molecules adhere to the windshield, so that the water drops cannot adhere to the windshield.

When the wiper blade of the invention is used, rainwater will gather to form a bead shape after falling on the windshield in rainy days, and the existing wiper blade has a completely different phenomenon that after the rainwater falls on the windshield, the water is flatly spread and cannot bead. The reason for this is that after the wiper blade of the invention is used, material molecules are attached to the windshield after the wiper blade is scraped, so that the friction coefficient is reduced, and water on the windshield is beaded under the action of surface tension.

In addition, the wiper blade of the above embodiment has an anti-freezing property, and the wiper blade does not freeze on the windshield at a low temperature.

In addition, the components contain organopolysiloxane, so that the ultraviolet resistance of the scraping part is improved, and the service life of the scraping part is prolonged.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides an use wiper that has wiper blade, the wiper blade is including scraping the portion, links together and is located the installation department of scraping the portion top with scraping the portion, scrapes a structure, its characterized in that with installation department an organic whole: the scraping part comprises the following components in parts by mass: 10-40 parts of graphite, 5-20 parts of boron nitride, 3-15 parts of zinc oxide whiskers, 55-75 parts of a silicone rubber composition, 8-15 parts of polytetrafluoroethylene and 8-15 parts of zinc oxide; the wiper blade further comprises: a blade mount and a wiper arm attachment mount to which the wiper blade is mounted for attaching the blade mount and the wiper blade to the wiper arm such that the blade mount and the wiper blade swing with the wiper arm; the mounting part is made of rubber materials, and a receiving cavity extending along the length direction of the mounting part is arranged in the mounting part; the wiper mounting frame is of a belt-shaped structure, the wiper mounting frame is inserted into the receiving cavity to be coated by the mounting part, a first opening and a second opening are arranged in the middle of the mounting part, the first opening is located on one edge of the mounting part, the second opening is located on the other edge of the mounting part, the first opening penetrates through the cavity wall of the receiving cavity, the first opening enables the local upper surface, the local first side surface and the local lower surface of the wiper mounting frame to be exposed, the second opening also penetrates through the cavity wall of the receiving cavity, and the second opening enables the local upper surface, the local second side surface and the local lower surface of the wiper mounting frame to be exposed; the wiper arm connecting seat comprises a fastener and a connecting seat, the connecting seat is fixedly connected with the fastener, the fastener comprises a first fastener and a second fastener, and the first fastener and the second fastener are hooked with each other to form detachable connection or form rotating connection in the width direction of the fastener; the first fastener is provided with a first cavity, the opening of the first cavity faces the second fastener, one edge of the mounting part is inserted into the first cavity, the first opening is located in the first cavity, a first positioning block with an I-shaped or dovetail-shaped cross section is further arranged in the first cavity, a first notch exposed in the first opening is formed in one edge of the scraper mounting frame, the first notch is used for the first positioning block to be embedded into, and the scraper mounting frame is used for limiting the first positioning block in the thickness direction; be equipped with the second cavity on the second fastener, the opening of second cavity is towards first fastener, and the second cavity supplies another border of installation department to insert, and the second opening is located the second cavity still be equipped with the second locating piece that the cross-section is I shape or dovetail in the second cavity be equipped with the second notch that exposes in the second opening on another border of doctor-bar mounting frame, the second notch supplies the embedding of second locating piece, the doctor-bar mounting frame is still right on the thickness direction the second locating piece carries on spacingly.

2. The wiper blade of claim 1, wherein: 30 parts of graphite, 10 parts of boron nitride, 5 parts of zinc oxide whisker, 65 parts of silicone rubber composition, 10 parts of polytetrafluoroethylene and 10 parts of zinc oxide.

3. The wiper blade of claim 1 or 2, wherein: the silicone rubber composition comprises the following components in percentage by mass: 2-8% of hydrogen-containing silicone oil, 5-15% of hydroxyl silicone oil, 1-14% of vinyl silicone oil, 20-40% of white carbon black and the balance of silicone rubber.

4. The wiper blade of claim 3, wherein: the silicone rubber is methyl vinyl silicone rubber.

5. The wiper blade of claim 1, wherein: the zinc oxide whisker is a tetrapod-like zinc oxide whisker.

6. The wiper blade of claim 1, wherein: the wiper blade also comprises the following components in parts by mass: 3-8 parts of organopolysiloxane.

7. The wiper blade of claim 1, wherein: the mounting part is made of silicon rubber or gas rubber material; the installation department with scrape the portion and adopt two extrusion process to make an organic whole structure or make an organic whole structure through the bonding.

8. The wiper blade of claim 7, wherein: the preparation material of the silicon rubber or the gas rubber comprises toner.