Wiper arm of automobile windscreen wiper

Abstract

The utility model relates to the technical field of automobile part manufacturing, and provides an automobile windscreen wiper arm which comprises a hinge rod, a mounting rod, an adjusting spring and a driving part, one end of the hinge rod is hinged to the mounting rod, and the hinge rod is used for being connected with an automobile connecting rod mechanism; the mounting rod is used for mounting an automobile doctor blade, the adjusting spring is arranged on the mounting rod, one end of the adjusting spring is connected with the hinge rod, and the other end of the adjusting spring is connected with the mounting rod; the driving piece is connected with the adjusting spring and used for controlling the tension degree of the adjusting spring. The wiper arm has the effect of improving the loosening problem of the wiper arm after being used for a long time.

Description

Technical Field

[0001] This application relates to the technical field of automotive component manufacturing, and particularly to a wiper arm for an automobile. Background Art

[0002] A windshield wiper, also known as a windscreen wiper, water wiper, windshield wiper or windscreen wiper, is a device used to scrape off raindrops and dust adhering to the vehicle's windshield, in order to improve the driver's visibility and enhance driving safety. Due to legal requirements, almost all cars everywhere are equipped with windshield wipers, and the rear windows of vehicles such as hatchbacks and SUVs are also equipped with windshield wipers; in addition to cars, other transportation vehicles are also equipped with windshield wipers, such as trains, trams, etc.

[0003] On rainy days, the windshield wiper is used to scrape off the rainwater on the car glass. The windshield wiper completes the wiping operation by reciprocating swing. During the swing of the windshield wiper, the rainwater is scraped from the middle of the windshield to the side or the bottom of the windshield. The windshield wiper mainly consists of a motor, a linkage mechanism, a wiper arm and a wiper blade. The motor drives the linkage mechanism to make the wiper arm swing back and forth, and the wiper blade is installed on the wiper arm, thereby realizing the wiping function.

[0004] Most of the windshield wiper arms on the market include a hinge part and a mounting part. The hinge part is connected to the linkage mechanism, the mounting part is connected to the hinge part, and the wiper blade is fixed on the mounting part. Currently, a fixed structure design is mostly adopted between the hinge part and the mounting part, and the connection position between the two is prone to looseness after long-term use, affecting the wiping effect and driving experience, so it needs to be improved. Summary of the Utility Model

[0005] In order to improve the loosening problem that occurs after long-term use of the wiper arm, this application provides a wiper arm for an automobile.

[0006] A wiper arm for an automobile provided by this application adopts the following technical solution:

[0007] A wiper arm for an automobile includes a hinge rod, a mounting rod, an adjusting spring and a driving member. One end of the hinge rod is hinged to the mounting rod, and the hinge rod is used to be connected to the automobile linkage mechanism; the mounting rod is used for installing the automobile wiper blade. The adjusting spring is arranged on the mounting rod, one end of the adjusting spring is connected to the hinge rod, and the other end is connected to the mounting rod; the driving member is connected to the adjusting spring and is used to control the tension of the adjusting spring.

[0008] By adopting the above technical solution, when the connection between the hinge rod and the mounting rod becomes loose, the driving member can be used to increase the tension of the adjusting spring, and the elastic force is relied on to maintain the firmness of the hinge rod and the mounting rod, effectively solving the problem of looseness that occurs after the wiper arm is used for a long time, improving the wiper effect and the overall use stability of the windshield wiper, and extending the service life of the windshield wiper.

[0009] Preferably, a receiving groove is formed on the mounting rod, and the adjusting spring is arranged in the receiving groove.

[0010] By adopting the above technical solution, the adjusting spring can be received in the receiving groove, making full use of the space, avoiding the adjusting spring being directly exposed outside, and playing a certain role in blocking and protecting the adjusting spring.

[0011] Preferably, the driving member is a gas spring or an electric push rod.

[0012] By adopting the above technical solution, when the piston rod of the gas spring or the electric push rod contracts, the adjusting spring can be stretched.

[0013] Preferably, the driving member includes a limiting block and a fastening member. The limiting block is slidably connected in the receiving groove, and the limiting block moves along the elastic force direction of the adjusting spring; a plurality of convex blocks are arranged on the mounting rod, and the convex blocks are spaced apart along the moving direction of the limiting block, and a limiting groove is formed between two adjacent convex blocks; a plurality of limiting teeth are spaced apart on the limiting block, and each limiting tooth is respectively clamped in the limiting groove; one end of the adjusting spring is connected to the limiting block, and the fastening member is used to lock the limiting block to the mounting rod;

[0014] The fastening member is a fastening bolt or a fastening stud. The fastening bolt or the fastening stud is screwed on the mounting rod, and one end of the fastening member located in the receiving groove is used to press the limiting block.

[0015] By adopting the above technical solution, when it is necessary to change the tension of the adjusting spring, the fastening member can be loosened first, and then an external force is applied to the limiting block to make the limiting block move along the end away from the hinge rod, so as to stretch the adjusting spring. Then, the limiting teeth on the limiting block are clamped in the limiting groove, and finally, the limiting block is locked on the mounting rod by using the fastening member.

[0016] Preferably, a hanging ring is connected to the limiting block, and the adjusting spring is hung on the hanging ring.

[0017] By adopting the above technical solution, one end of the adjusting spring can be hung on the hanging ring to complete the connection between the adjusting spring and the limiting block.

[0018] Preferably, both the hinge rod and the mounting rod are made of stainless steel or aluminum alloy materials.

[0019] By adopting the above technical solution, both stainless steel and aluminum alloy materials have good strength and corrosion resistance, so as to extend the service life of the wiper arm.

[0020] Preferably, an installation hole is provided at one end of the hinge rod away from the mounting rod, and the installation hole is used to connect with the automotive linkage mechanism.

[0021] By adopting the above technical solution, the hinge rod can be connected to the linkage mechanism of the vehicle through the installation hole.

[0022] Preferably, the outer surfaces of both the hinge rod and the mounting rod are coated with a paint layer.

[0023] By adopting the above technical solution, the paint layer can improve the aesthetics of the outside of the hinge rod and the mounting rod, and at the same time, the paint layer can also play a certain protective role on the outer surfaces of the two.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] (1) By providing the adjusting spring and the driving member, when the connection between the hinge rod and the mounting rod becomes loose, the driving member can be used to increase the tension of the adjusting spring, and rely on the elastic force to maintain the firmness of the hinge rod and the mounting rod, effectively solving the loosening problem that occurs after the wiper arm is used for a long time.

[0026] (2) By providing a hanging ring on the limiting block, it is convenient for the end of the adjusting spring to be clamped on the hanging ring.

[0027] (3) By providing the paint layer, on the one hand, the paint layer can improve the aesthetics of the outside of the hinge rod and the mounting rod, and on the other hand, it can improve the anti-corrosion ability of the two. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural diagram of the wiper arm in the embodiment of the present application;

[0029] Figure 2 is a partial structural diagram of the wiper arm in the embodiment of the present application;

[0030] Figure 3 is Figure 2 an enlarged schematic view of the partial A part in

[0031] Reference numerals: 1, hinge rod; 2, mounting rod; 3, adjusting spring; 4, driving member; 41, limiting block; 42, fastener; 5, installation hole; 6, receiving groove; 7, convex block; 8, limiting groove; 9, limiting tooth; 10, hanging ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The technical solutions of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The present application can be embodied in various different forms and is not limited to the embodiments described herein.

[0033] In the description of the present application, the reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc., means that the specific features, structures, materials, or characteristics represented by the combination of the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials, or characteristics represented can be combined in a suitable manner in any one or more embodiments or examples.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "comprising" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0035] In the description of the embodiments of the present application, unless otherwise clearly defined and limited, technical terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection; it can also be a detachable connection; or integrated; it can also be a mechanical connection. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0036] The following will describe in detail some embodiments of the present application with reference to the accompanying drawings. Without conflict, those skilled in the art can combine and combine the different embodiments or examples represented in the present application and the features of different embodiments or examples.

[0037] The embodiments of the present application disclose a wiper arm for an automobile. Referring to Figure 1 and Figure 2, the wiper arm includes a hinge rod 1, a mounting rod 2, an adjusting spring 3, and a driving member 4. One end of the hinge rod 1 is hinged to the mounting rod 2, and a mounting hole 5 is formed at the other end. The hinge rod 1 is connected to the linkage mechanism of the vehicle through the mounting hole 5, and the mounting rod 2 is used for mounting the vehicle wiper blade. In this embodiment, both the hinge rod 1 and the mounting rod 2 are made of stainless steel or aluminum alloy materials, and both of these materials have good strength and corrosion resistance, which can extend the service life of the wiper arm. Among them, the outer surfaces of the hinge rod 1 and the mounting rod 2 are both coated with a paint layer, and the paint layer includes, but is not limited to, a metal layer, a non-metal layer, and a chemical layer. On the one hand, the paint layer can improve the aesthetics of the exterior of the hinge rod 1 and the mounting rod 2, and on the other hand, the paint layer can also play a certain protective role in their exteriors, extending the service life of the wiper arm.

[0038] A receiving groove 6 is formed in the mounting rod 2, and the adjusting spring 3 is installed in the receiving groove 6. One end of the adjusting spring 3 is connected to the hinge rod 1, and the other end is connected to the mounting rod 2; the driving member 4 is connected to the adjusting spring 3 and is used to control the tension of the adjusting spring 3. Specifically, in this embodiment, the driving member 4 is an actuator such as a gas spring or an electric push rod, and the piston rod of the driving member 4 is connected to the adjusting spring 3 to control the expansion and contraction of the adjusting spring 3.

[0039] When the connection between the hinge rod 1 and the mounting rod 2 becomes loose, the driving member 4 can be used to increase the tension of the adjusting spring 3, and rely on the elastic force to maintain the firmness of the hinge rod 1 and the mounting rod 2, effectively solving the problem of looseness that occurs after the wiper arm is used for a long time, improving the wiper effect and the overall use stability of the windshield wiper, and extending the service life of the windshield wiper.

[0040] In some embodiments, in combination with Figure 3 , the driving member 4 includes a limit block 41 and a fastener 42. The limit block 41 is slidably connected in the receiving groove 6, and the limit block 41 moves along the elastic force direction of the adjusting spring 3. A plurality of convex blocks 7 are fixedly connected to the mounting rod 2, and each convex block 7 is located in the receiving groove 6 and is spaced apart along the moving direction of the limit block 41. A limit groove 8 is formed between two adjacent convex blocks 7. A plurality of limit teeth 9 are spaced apart on the limit block 41, and each limit tooth 9 is respectively engaged in the limit groove 8. One end of the adjusting spring 3 is connected to the limit block 41, and the fastener 42 is used to lock the limit block 41 to the mounting rod 2. The fastener 42 is a fastening bolt or a fastening stud, and the fastening bolt or the fastening stud is screwed on the mounting rod 2. One end of the fastener 42 located in the receiving groove 6 is used to press the limit block 41. Among them, a hanging ring 10 is fixedly connected to the limit block 41, and one end of the adjusting spring 3 is hung on the hanging ring 10.

[0041] When it is necessary to change the tension of the adjusting spring 3, the fastener 42 can be loosened first, and then an external force is applied to the limit block 41 to make the limit block 41 move along the end away from the hinge rod 1, thereby stretching the adjusting spring 3. Then, the limit teeth 9 on the limit block 41 are snapped into the limit groove 8, and finally, the limit block 41 is locked on the mounting rod 2 by using the fastener 42 to prevent the limit block 41 from moving due to the reaction force of the adjusting spring 3.

[0042] The implementation principle of the wiper arm of a vehicle in an embodiment of the present application is as follows: when the connection between the hinge rod 1 and the mounting rod 2 becomes loose, the driving member 4 can be used to increase the tension of the adjusting spring 3, and the elastic force is relied on to maintain the firmness of the hinge rod 1 and the mounting rod 2, effectively solving the problem of looseness that occurs after the wiper arm is used for a long time.

[0043] The above are all preferred embodiments of the present application. The protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An automotive wiper blade arm, characterized in that, It includes a hinge rod (1), a mounting rod (2), an adjusting spring (3) and a driving member (4). One end of the hinge rod (1) is hinged to the mounting rod (2), and the hinge rod (1) is used to connect with the automotive linkage mechanism; the mounting rod (2) is used for mounting an automotive wiper blade. The adjusting spring (3) is arranged on the mounting rod (2), one end of the adjusting spring (3) is connected to the hinge rod (1), and the other end is connected to the mounting rod (2); the driving member (4) is connected to the adjusting spring (3) and is used to control the tension of the adjusting spring (3). A receiving groove (6) is formed in the mounting rod (2), and the adjusting spring (3) is arranged in the receiving groove (6). The driving member (4) includes a limiting block (41) and a fastening member (42). The limiting block (41) is slidably connected in the receiving groove (6), and the limiting block (41) moves along the elastic force direction of the adjusting spring (3); a plurality of bumps (7) are arranged on the mounting rod (2), and the bumps (7) are spaced apart along the moving direction of the limiting block (41), and a limiting groove (8) is formed between two adjacent bumps (7); a plurality of limiting teeth (9) are spaced apart on the limiting block (41), and each of the limiting teeth (9) is respectively engaged in the limiting groove (8); one end of the adjusting spring (3) is connected to the limiting block (41), and the fastening member (42) is used to lock the limiting block (41) to the mounting rod (2). The fastening member (42) is a fastening bolt or a fastening stud. The fastening bolt or the fastening stud is screwed onto the mounting rod (2), and the end of the fastening member (42) located in the receiving groove (6) is used to press the limiting block (41).

2. The windshield wiper arm according to claim 1, characterized in that, A hanging ring (10) is connected to the limiting block (41), and the adjusting spring (3) is hung on the hanging ring (10).

3. The wiper arm of an automobile according to claim 1, characterized in that Both the hinge rod (1) and the mounting rod (2) are made of stainless steel or aluminum alloy materials.

4. The windshield wiper arm according to claim 1, characterized in that, An installation hole (5) is formed at one end of the hinge rod (1) away from the mounting rod (2), and the installation hole (5) is used to connect with the automotive linkage mechanism.

5. A wiper arm of an automotive wiper according to claim 1, characterized in that, The outer surfaces of both the hinge rod (1) and the mounting rod (2) are coated with a paint layer.

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