CN216611149U

CN216611149U - Boneless wiper steel sheet, boneless wiper ware and wiper

Info

Publication number: CN216611149U
Application number: CN202123306571.2U
Authority: CN
Inventors: 龙绍海
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2022-05-27
Anticipated expiration: 2031-12-27

Abstract

The utility model provides a boneless wiper steel sheet, a boneless wiper and a windscreen wiper, wherein the boneless wiper steel sheet comprises a strip-shaped body, the body is provided with a rectangular cross section, the length of the body is defined as L, the width of any point x along the length direction, which corresponds to the cross section, is w (x), and the thickness of the point x is t (x); the rectangular cross section is provided to be gradually smaller from the middle portion of the body toward both end portions so that the moment of inertia is gradually smaller from the middle portion of the body toward both end portions. The utility model changes the traditional design that the section size of the steel sheet is constant, and the section is gradually reduced from the middle part to the two end parts of the body, so as to achieve the purpose of changing the inertia moment of the steel sheet along the length direction.

Description

Boneless wiper steel sheet, boneless wiper ware and wiper

Technical Field

The utility model relates to the technical field of automobile wiper accessories, in particular to a boneless wiper steel sheet, a boneless wiper and a wiper.

Background

The boneless wiper is a novel wiper structure, has the advantages of being lighter, even in wiping effect, low in maintenance cost and the like compared with the traditional boned wiper, and is widely adopted by the automobile industry.

The automobile boneless wiper blade is characterized in that the force transmitted by the wiper arm is distributed on the surface of a windshield through one or two steel sheets, the whole wiper is of a fulcrum-free structure, and the wiper arm drives the wiper blade to complete the wiper action. The existing automobile windshield glass is almost designed into a curved surface shape, the radian of the windshield glass of different automobile types is different, and the force distribution of the existing steel sheet with constant rigidity cannot be uniform and consistent everywhere, so that the defects of missed scraping, shaking, abnormal sound, scraping water marks and the like caused by uneven stress of certain parts are caused. In particular: the steel sheets at the two end parts of the wiper have smaller elasticity, so that the wiping force is smaller or no wiping force is generated, and finally the wiping effect at the end parts of the wiper is poor, and the sight of a driver is influenced.

In view of the above, a new technical solution is needed to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of missed scraping, shaking, abnormal sound, scraping water marks and the like of a windshield wiper in the prior art, and provides a boneless wiper steel sheet, a boneless wiper and a windshield wiper.

In order to achieve the purpose, the utility model adopts the following technical means:

a boneless wiper steel sheet comprises a strip-shaped body, wherein the body is provided with a rectangular cross section, the length of the body is defined as L, the width of the cross section corresponding to any point x along the length direction is w (x), and the thickness of the cross section is t (x), wherein x is epsilon (L/2 );

the formula of the axial inertia moment of the neutral layer is as follows:

wherein the rectangular cross section is provided to become gradually smaller from the middle portion to both end portions of the body so that the moment of inertia becomes gradually smaller from the middle portion to both end portions of the body.

As a further improvement, two through grooves are symmetrically formed in two ends of the body, and the width of each through groove is gradually widened from the middle part to the end part of the body.

As a further improvement, the width of each through groove is gradually and uniformly widened from the middle part to the end part of the body.

As a further improvement, the width of the body is gradually narrowed from the middle portion to both end portions.

As a further improvement, the width of the body is gradually and uniformly narrowed from the middle part to the two end parts.

As a further improvement, the thickness of the body is gradually reduced from the middle part to the two end parts.

As a further improvement, the thickness of the body is gradually and uniformly thinned from the middle part to the two end parts.

As a further improvement, at least one surface of the upper surface and the lower surface of the body is uniformly thinned gradually from the middle part to the two end parts.

A boneless wiper comprises the boneless wiper steel sheet and the adhesive tape connected to the boneless wiper steel sheet.

A wiper blade comprising the boneless wiper as described above.

Compared with the prior art, the utility model has the following technical effects:

the flat wiper steel sheet changes the traditional design that the section of the steel sheet is constant, the rectangular cross section of the steel sheet is arranged from the middle part of the body to the two end parts gradually, so that the inertia moment of the steel sheet along the length direction is changed, the steel sheet is bent under the condition that the arm scraping force and the windshield acting force are balanced mutually, the curvature change of the steel sheet enables the steel sheet to provide uniform acting force to all positions of the rubber strip, especially, the end part of the wiper can ensure to provide enough acting force to enable the rubber strip to be tightly attached to the windshield, so that the wiping defects of brush leakage, shaking, water marks and the like are effectively eliminated, and the wiping effect of a product is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 shows a schematic structural view of a boneless wiper steel sheet according to a first embodiment of the present invention (only half of the structure is shown because of the symmetrical structure);

fig. 2 is a schematic structural view of a boneless wiper steel sheet according to a first embodiment of the present invention (only half of the structure is shown because of the symmetrical structure);

fig. 3 shows a schematic structural view of a boneless wiper steel sheet according to a first embodiment of the present invention (only half of the structure is shown because of the symmetrical structure).

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only 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 one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

The utility model discloses a boneless wiper steel sheet which is applied to a wiper.

The steel sheet comprises a strip-shaped body, the body is provided with a rectangular cross section, the length of the body is defined to be L, the width of the cross section corresponding to any point x along the length direction is w (x), and the thickness is t (x), wherein x belongs to the group of x ∈ (L/2 );

the formula of the axial inertia moment of the neutral layer is as follows:

wherein Izc is the moment of inertia, W (x) is the cross-sectional width, and t (x) is the cross-sectional thickness;

As mentioned above, the flat sheet of the frameless windshield wiper changes the traditional design that the section of the flat sheet is constant, the rectangular cross section of the flat sheet is gradually reduced from the middle part to the two end parts of the body, so that the moment of inertia of the flat sheet along the length direction is changed, the moment of inertia is gradually reduced from the middle part to the end parts, under the performance condition, when the scraping arm force and the windshield acting force are balanced mutually, the flat sheet is bent, the curvature change of the flat sheet enables the flat sheet to provide uniform acting force to all parts of the rubber strip, especially, enough acting force can be ensured to be provided at the end parts of the windshield wiper, so that the rubber strip is tightly attached to the windshield wiper, the scraping defects of missed brushing, shaking, water marks and the like are effectively eliminated, and the scraping effect of a product is improved.

The following is further described by way of several examples.

Example one

Referring to fig. 1, the flat wiper blade of the present embodiment has a strip-shaped body 10, two through slots 11 are symmetrically formed at two ends of the body 10, and the width of each through slot 11 gradually increases from the middle to the end of the body 10.

Specifically, the length of the body 10 is 24 inches, the outer contour width is 7mm, and the thickness is 0.9 mm. The through grooves 11 are symmetrically arranged relative to the midpoint of the body 10, the length of each through groove 11 is 200mm, and the outermost ends of the through grooves 11 are 2mm away from the outer end of the body 10. In the present embodiment, the width of the through groove 11 is 3.6mm at the outermost end and 0.6mm at the innermost end, and the width of the through groove 11 is gradually and uniformly widened from the middle to the end of the body 10.

Description of the principle: in the embodiment, the through grooves 11 are symmetrically formed at both ends of the steel sheet, and the width of the through grooves 11 is gradually and uniformly increased from the middle part to the end part of the body 10, so that the cross section of the body 10 is substantially changed and gradually decreased from the middle part to the end parts. It should be noted that, at this time, the cross section corresponding to any point x along the length direction of the steel sheet actually includes two small rectangular cross sections, and the sum of the two small rectangular cross sections is the equivalent cross section corresponding to the point x. The change of the shape of the steel sheet causes the inertia moment to be gradually reduced. Under the prerequisite that the steel sheet material was confirmed, set up to both ends with diminishing along with the moment of inertia, the both ends position of steel sheet can obtain bigger bending curvature to can provide bigger effort for the windshield wiper adhesive tape, ensure that windshield wiper tip position and windshield closely hold tightly, laminate, thereby effectively eliminate hourglass brush, shake, water marks etc. and scrape the brush defect, improve the product and scrape the brush effect.

Through the actual measurement, there is effectual effort the steel sheet of this embodiment between near tip and windshield, therefore can provide effective effort for the windshield wiper adhesive tape, ensures that windshield wiper tip position and windshield closely hold tightly, the laminating to effectively eliminate hourglass brush, shake, water marks etc. and scrape the brush defect, improve the product and scrape the brush effect. In the prior art, the wiper blade is a blade with a constant cross section, the size of the cross section is kept constant along the length direction, and the elastic modulus of the blade is determined by the raw material, so that the blade with the constant cross section is a blade with constant rigidity. The surface of the automobile windshield is a curved surface, the curvature of the curved surface is different everywhere, particularly the curvature change near the two ends of the glass is the most severe, and the radian of the windshields of different automobile types is different. The contact force of the wiper blade and the windshield surface is acquired after the steel sheet with radian deforms when the windscreen wiper works, the steel sheet with constant rigidity enables the curvature radius of the steel sheet at the end part to be too large even to have no curvature under the restriction of different wiper arm forces, so that the contact force of the rubber strip and the windshield surface of the automobile is uneven when the wiper blade works, the contact force is particularly prominent at the two end parts of the steel sheet, and the contact force is uneven, so that the defects such as scraping leakage, shaking, abnormal sound, wiping water marks, jumping and the like are caused. The rigidity of the steel sheet is changed by changing the size of the cross section of the steel sheet along the length direction, the constraint that the integral curvature of the steel sheet is the same rigidity and different scraping arm pressures is removed, so that the curvature of the same steel sheet can be flexibly adjusted according to the curvature of the curved surface of the windshield, the contact force transmitted to the rubber strip by the steel sheet when the wiper blade works is uniform and consistent everywhere, the rubber strip is tightly attached to the windshield everywhere, the wiping defects of missed wiping, shaking, water marks, jumping and the like are effectively eliminated, and the wiping quality of products is improved.

It should be noted that the through groove 11 in this embodiment is not provided from the middle position of the body 10, because the curvature characteristic of the steel sheet in the middle position in the prior art can satisfy the requirement of the wiper blade, and can ensure a better wiping effect, and only there is a problem that the wiping effect is not good in the two end positions of the wiper blade, therefore, the present invention focuses on the change of the shape of the steel sheet at the two end portions. The starting position of the shape change of the steel sheet is set according to the material properties of the steel sheet itself, such as the elastic modulus, and the like, in combination with the size of the steel sheet.

The present embodiment also provides a boneless wiper including the above boneless wiper steel sheet, in which the boneless wiper steel sheet and the rubber strip are assembled together so as to be connected; it is easy to understand that the wiper blade further comprises a transmission structure, a driving structure, a control device, etc., which are well known in the art, and the present invention is not repeated.

Example two

Referring to fig. 2, the difference between the present embodiment and the first embodiment is: the cross sections at two ends are changed in size, the thickness is unchanged, and the width is changed.

Specifically, the length of the body 10 is 24 inches, the thickness is 0.9mm, and the width of the middle part of the body 10 is 7 mm. The total length of the removed material portion was 200mm, the width of the end of the body 10 was 3mm, and the cut was a straight line.

Description of the principle: this embodiment removes material symmetrically at both ends of the steel sheet so that the width of the body 10 is narrowed uniformly from the middle portion to the end portions, and also substantially changes the cross section of the body 10 so that the cross section becomes smaller from the middle portion to the end portions. The change of the shape of the steel sheet causes the inertia moment to gradually become smaller from the middle part to the end part. Under the prerequisite that the steel sheet material was confirmed, set up to both ends with diminishing along with the moment of inertia, the both ends position of steel sheet can obtain bigger bending curvature to can provide bigger effort for the windshield wiper adhesive tape, ensure that windshield wiper tip position and windshield closely hold tightly, laminate, thereby effectively eliminate hourglass brush, shake, water marks etc. and scrape the brush defect, improve the product and scrape the brush effect.

Through the actual measurement, there is effectual effort the steel sheet of this embodiment between near tip and windshield, therefore can provide effective effort for the windshield wiper adhesive tape, ensures that windshield wiper tip position and windshield closely hold tightly, the laminating to effectively eliminate hourglass brush, shake, water marks etc. and scrape the brush defect, improve the product and scrape the brush effect.

It should be noted that the material of the body 10 is removed by linear cutting in this embodiment, and in other embodiments, a curved or zigzag cutting may be adopted, that is, the cut is a curved or zigzag cut, as long as it is ensured that the moment of inertia gradually decreases with the change of the rectangular cross section.

EXAMPLE III

Referring to fig. 3, the difference between the present embodiment and the first embodiment is: the thickness of the steel sheet along the length direction is changed, and the width is kept unchanged.

Specifically, the length of the body 10 is 24 inches, the width is 7mm, and the middle thickness is 0.9 mm. The thickness of both end portions of the body 10 becomes thinner uniformly from the middle to the end portions, more specifically, the upper and lower surfaces of the body 10 become thinner simultaneously toward the middle, so that the thickness of the body 10 at the end portions is 0.3mm and the total length of the thickness variation is 200 mm.

Description of the principle: in the embodiment, on the premise of keeping the thickness of the steel sheet constant, materials on the upper and lower surfaces of the body 10 are removed, so that the thickness of the body 10 is gradually and uniformly narrowed from the middle part to the end parts, and the cross section of the body 10 is substantially changed, so that the cross section is gradually reduced from the middle part to the two end parts. The change of the shape of the steel sheet causes the inertia moment to gradually become smaller from the middle part to the end part. Under the prerequisite that the steel sheet material was confirmed, set up to both ends with diminishing along with the moment of inertia, the both ends position of steel sheet can obtain bigger bending curvature to can provide bigger effort for the windshield wiper adhesive tape, ensure that windshield wiper tip position and windshield closely hold tightly, laminate, thereby effectively eliminate hourglass brush, shake, water marks etc. and scrape the brush defect, improve the product and scrape the brush effect.

It should be noted that the material removal of the body 10 in the thickness direction is performed from both the upper surface and the lower surface, and it is easy to think that in other embodiments, it is also possible to remove material from only the upper surface or only the lower surface, so that the cross section of the body 10 becomes smaller from the middle to the end, and any way of changing the thickness of the body 10 to realize the reduction of the inertia moment to the end is within the protection scope of the present invention.

In conclusion, the rigidity coefficient of the steel sheet is changed by changing the inertia moment of the rectangular cross section, so that the distribution of the curvature of the steel sheet is changed, and the aim of uniformly distributing the force acting on the windshield surface is fulfilled. The three embodiments are all exemplified by a 24-inch steel sheet, and the actual steel sheet at least comprises the following specifications: 6mmx0.8mm,7mmx0.9xx,9mmx1mm,10mmx1mm, 14mmx0.8mm,14mmx0.9mm,14mmx1mm and other specifications, and the length comprises: 14 cun, 15 cun, 16 cun, 17 cun, 18 cun, 19 cun, 20 cun, 21 cun, 22 cun, 23 cun, 24 cun, 26 cun, 28 cun, 30 cun, 32 cun, etc.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. The utility model provides a boneless wiper steel sheet, includes the body of rectangular shape, its characterized in that: the body is provided with a rectangular cross section, the length of the body is defined to be L, the width of the cross section corresponding to any point x along the length direction is w (x), and the thickness is t (x), wherein x belongs to the field of-L/2 and L/2);

2. The flat wiper blade as defined in claim 1, wherein two through grooves are symmetrically formed at both ends of said body, and the width of each of said through grooves is gradually widened from the middle portion to the end portion of said body.

3. The boneless wiper blade as defined in claim 2, wherein the width of each of the through grooves is uniformly widened from the central portion toward the end portion of the body.

4. The boneless wiper blade according to claim 1, wherein the width of the body is set to be gradually narrowed from the middle portion to both end portions.

5. The boneless wiper blade according to claim 4, wherein the width of the body is uniformly narrowed from the middle portion toward both end portions.

6. The boneless wiper blade according to claim 1, wherein the thickness of the body is set gradually thinner from the middle portion toward both end portions.

7. The boneless wiper blade according to claim 6, wherein the thickness of the body is set gradually and uniformly thinner from the middle portion toward both end portions.

8. The boneless wiper blade according to claim 6, wherein at least one of the upper and lower surfaces of the body is uniformly tapered gradually from the middle portion toward both end portions.

9. A boneless wiper comprising the boneless wiper blade according to any one of claims 1 to 8 and a rubber strip attached thereto.

10. A wiper blade comprising the boneless wiper according to claim 9.