Reinforced composite type automobile wiper blade

Abstract

The utility model discloses a reinforced composite type automobile wiper blade, which relates to the technical field of automobile accessories and comprises a connecting part, a shoulder part, a neck part and a wiper blade, the connecting part is arranged in a wiper arm and connected with a reed in a clamping manner, a plurality of expansion microspheres are arranged in the connecting part in a closed manner, and each expansion microsphere consists of a thermoplastic polymer shell and sealed liquid alkane gas. The combination strength of the contact position of the wiper blade and the reed is increased through the built-in expansion microsphere, the structural supporting force is improved through the high strength of the spherical air gap structure, the overall density of the wiper blade is reduced, the weight of the wiper blade is reduced on the premise that it is guaranteed that the structural strength of the wiper blade is not reduced, and in summer and autumn seasons where rainwater occurs frequently, the wiper blade is not prone to falling off. Thermal expansion is achieved through the expansion microspheres, the binding force between the wiper blade and the reed is improved, the pressure between the lip of the wiper blade and windshield glass is improved, the elastic coefficient of the wiper blade is increased, the elastic expansion amount is increased, the curvature change efficiency is improved, and the wiper blade continuously and variably wipes away rainwater or foreign matter all the time.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile accessories, especially to a reinforced composite automobile wiper blade. BACKGROUND

[0002] At present, the automobile industry technology level is constantly improved, and the automobile wiper is very important for the driving safety in rainy days, and the cleaning degree of the wiper blade directly measures the quality of the whole wiper system.

[0003] The traditional existing wiper blade mostly adopts soft silica gel material extrusion or mold forming, and the material is single. In order to ensure that the wiper blade can be closely combined with the surface of the glass, the traditional wiper blade adopts the method of using the metal wiper arm to press the wiper blade to realize the seamless gap between the two, but in the case of foreign matter, the wiper blade will be damaged under the condition of pressing and swinging, and the contact part between the wiper blade and the glass surface will be damaged, which will cause the contact part with the foreign matter to be damaged, and the wiper blade cannot clean the rain or foreign matter, and abnormal sound will be generated.

[0004] In addition, considering that the rainy season is mostly in summer and autumn, the wiper is used frequently, and the wiper is used less in spring and winter, so it is necessary to adjust the structural strength of the wiper in time according to the season of rainfall. Therefore, the utility model provides a reinforced composite automobile wiper blade. UTILITY MODEL CONTENTS

[0005] The utility model discloses a kind of reinforced composite automobile wiper blades to solve the problem that the wiper blade material of prior art is single, density is same, bending strength and elastic consistency are extremely high after forming, it is difficult to realize wiper blade continuous combination, stable pressing windshield glass on the windshield glass of curvature not uniform, curvature change fast of automobile, defect.

[0006] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] A kind of reinforced composite automobile wiper blade, including the connecting portion of being arranged in wiper arm and being connected with reed, shoulder, neck and blade, the connecting portion is closedly provided with several expansion microspheres, the expansion microspheres are composed of thermoplastic polymer shell and enclosed liquid alkane gas, when heated, gas pressure increases in shell and shell softens, so that expansion microspheres volume significantly increases;When cooling, shell is hardened again, and volume is fixed.

[0008] Further, the adjacent expansion microspheres are evenly filled in the connecting portion and the shoulder connection, to ensure that the expansion microspheres provide strong structural support between them, and the structure is balanced and stable after expansion or contraction.

[0009] Further, the shoulder, the neck and the blade are formed by one-time molding by a mold, and then the connecting part is formed by two-time molding by a mold pressing process.

[0010] Further, the average diameter of the expanded microspheres ranges from 10 to 50 μm, and the true density ranges from 1000 to 1300 kg / m 3 .

[0011] Further, the connecting part and / or the shoulder are filled with glass fiber particles to further improve the structural strength of the wiper blade.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] 1. The reinforced composite automobile wiper blade has great improvement compared with the traditional wiper blade or wiper strip, and the improvement is embodied in that the closed expanded microspheres are arranged in the connecting part and the shoulder, so that the structure of the wiper blade has different strength changes in different seasons, for example, the seasons with frequent rain are mostly summer and autumn, and the wiper is used frequently; the seasons with less rain are spring and winter, and the wiper is used less frequently.

[0014] 2. The reinforced composite automobile wiper blade improves the material in the connecting part, and when the expanded microspheres are heated, the gas pressure in the shell increases and the thermoplastic shell softens, so that the volume of the expanded microspheres increases significantly, the deformability increases, the bending strength and the elasticity are greatly improved, and the wiper blade is applied to the windshield glass with non-uniform curvature and fast curvature change, so that the technical effect of continuously adhering and stably pressing the wiper blade to the windshield glass is achieved.

[0015] 3. The reinforced composite automobile wiper blade fills the expanded microspheres, reduces the overall weight of the wiper blade, saves the material cost of the wiper blade, and reduces the overall equipment quality of the vehicle.

[0016] In summary, the utility model increases the bonding force of the wiper blade and the contact part by arranging the expanded microspheres, improves the structural support force by using the high strength of the spherical air gap structure, reduces the overall density of the wiper blade, reduces the weight of the wiper blade under the premise of ensuring the structural strength of the wiper blade, saves the material of the wiper blade, reduces the overall equipment quality of the vehicle, and realizes thermal expansion by using the expanded microspheres in the seasons with frequent rain in summer and autumn, so as to support the contact part, improve the bonding force of the wiper blade and the contact part, improve the pressure of the lip of the wiper blade and the windshield glass, improve the elastic coefficient of the wiper blade, increase the elastic extension amount, improve the curvature change efficiency, and keep the wiper blade continuously and variably wiping off the rain or foreign matters at all times. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the specification, and are used to explain the utility model together with embodiments of the utility model, and do not constitute a limitation to the utility model.

[0018] Figure 1 It is the cross section structure schematic view of the embodiment one in the utility model;

[0019] Figure 2 It is Figure 1 It is the enlarged view of a part structure in the utility model;

[0020] Figure 3 It is the cross section structure schematic view of the embodiment two in the utility model.

[0021] In the drawing: 1 connecting part, 2 shoulder part, 3 neck part, 4 blade, 5 expanded microsphere. Specific implementation

[0022] The technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model;

[0023] Referring to Figures 1-3 A reinforced composite automobile wiper blade, comprising a connecting part 1, a shoulder part 2, a neck part 3 and a blade 4 which are arranged in a wiper arm and are connected with the spring piece, a plurality of expanded microspheres 5 are arranged in the connecting part 1, the expanded microspheres 5 are composed of a thermoplastic polymer shell and a liquid alkane gas, when heated, the gas pressure in the shell increases and the shell softens, so that the volume of the expanded microspheres 5 increases significantly, and when cooled, the shell becomes hard again and the volume is fixed.

[0024] Further, the expanded microspheres 5 are uniformly filled between the connecting part 1 and the shoulder part 2, so as to provide strong structural support between the expanded microspheres 5 and balanced stability of the structure after expansion or contraction.

[0025] As Figure 1 In the embodiment one, the connecting part 1 and the shoulder part 2 are formed by a mold once, and then the neck part 3 and the blade 4 are formed by a mold pressing process twice.

[0026] The composite material used by the connecting part 1 and the shoulder part 2 is EPDM+NBR, the composite material used by the neck part 3 is CR+NBR or EPDM+NBR, or EPDM+CR, and the composite material used by the blade 4 is CR+EPDM or CR.

[0027] As Figure 3 In the embodiment two, the connecting part 1 and the shoulder part 2 are formed by a mold once, the neck part 3 and the blade 4 are formed by a mold once, and then the connecting part 1 and the shoulder part 2 are formed by a mold pressing process twice.

[0028] The composite material used by the connecting part 1 and the shoulder part 2 is EPDM+NBR, and the composite material used by the neck part 3 and the blade 4 is EPDM+CR.

[0029] Further, the average diameter of the expanded microspheres 5 ranges from 10 to 50 pm, and the true density is 1000 to 1300 kg / m 3 .

[0030] Further, the connecting portion 1 and / or the shoulder portion 2 are filled with glass fiber particles to further improve the structural strength of the wiper blade.

[0031] The closed expanded microspheres 5 built-in the connecting portion 1 and the shoulder portion 2 make the wiper blade have different strength changes in different seasons, for example, the rainy season is mostly in summer and autumn, and the wiper is used more frequently; the spring and winter seasons have less rain, and the wiper is used less frequently.

[0032] Through the improvement of the material inside the connecting portion 1, the gas pressure in the shell increases and the thermoplastic shell softens when the expanded microspheres 5 are heated, so that the volume of the expanded microspheres 5 increases significantly, the deformability increases, and the bending strength and elasticity are greatly improved. The wiper blade is applied to the windshield glass with non-uniform curvature and rapid curvature change, and the technical effect of continuously adhering and stably pressing the windshield glass is achieved.

[0033] By filling the expanded microspheres 5, the overall weight of the wiper blade is reduced, and the material cost of the wiper blade is saved, and the overall equipment quality of the vehicle is reduced.

[0034] By building-in the expanded microspheres 5, the bonding force at the contact between the wiper blade and the reed is increased, and the high strength of the spherical air gap structure is used to improve the structural support force, and the overall density of the wiper blade is reduced. Under the premise of ensuring the structural strength of the wiper blade, the weight of the wiper blade is reduced, the material of the wiper blade is saved, the overall equipment quality of the vehicle is reduced, and in the rainy season of summer and autumn, the expanded microspheres are used to expand and support the reed, improve the bonding force between the wiper blade and the reed, and improve the pressure between the wiper blade lip and the windshield glass. It can also improve the elastic coefficient of the wiper blade, increase the elastic extension amount, improve the curvature change efficiency, and keep the wiper blade continuously and variably wiping off the rain or foreign matter at all times.

Claims

1. A reinforced composite automotive wiper blade comprising a connecting portion (1) provided in a wiper arm and engaged with a spring blade, a shoulder portion (2), a neck portion (3) and a blade (4), characterized in that, The connecting part (1) is closed and provided with a plurality of expanded microspheres (5) which are composed of a thermoplastic polymer shell and an enclosed liquid alkane gas. When heated, the gas pressure in the shell increases and the shell softens, thus causing the volume of the expanded microspheres (5) to increase significantly. When cooled, the shell becomes hard again and the volume is fixed.

2. The reinforced composite automotive wiper blade of claim 1, wherein, The adjacent expanded microspheres (5) are uniformly spaced in the connecting part (1) and the shoulder part (2) to ensure that the expanded microspheres (5) provide strong structural support and that the structure is balanced and stable after expansion or contraction.

3. The reinforced composite automotive wiper blade of claim 1, wherein, The shoulder part (2), the neck part (3), and the blade (4) are formed in one step by a mold, and then the connecting part (1) is formed in a second step by a mold pressing process.

4. The reinforced composite automotive wiper blade of claim 1, wherein, The expanded microspheres (5) have an average diameter ranging from 10 to 50 μm, a true density of 1000 to 1300 kg / m 3 .

5. The reinforced composite automotive wiper blade of claim 1 wherein, The connecting part (1) and / or the shoulder part (2) are filled with glass fiber particles to further improve the structural strength of the wiper blade.

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