Swing arm shaft sleeve assembly for installing adjustable windscreen wiper

Abstract

The utility model discloses a swing arm and shaft sleeve assembly for installing an adjustable windscreen wiper, which comprises a swing arm shaft, a shaft sleeve, a swing arm and a ball head, a groove is arranged on the lower part of the shaft sleeve, and an inner sawtooth locking washer and a retaining check ring which are adjacent and close to each other are arranged on the groove of the shaft sleeve. A nut is arranged on the swing arm shaft and at the upper end of the shaft sleeve, and a lower flat washer and a rubber pad are arranged on the swing arm shaft and between the nut and the upper end of the shaft sleeve. The locking height of shaft sleeve installation is adjusted through the inner sawtooth locking gasket and the retaining check ring, and the installation requirement for different lengths of the shaft sleeve is met. The shaft sleeve has assembling universality, development cost and manufacturing cost are saved, it is guaranteed that the pressure of the scraping piece on glass meets the standard requirement, the purpose of comprehensively and thoroughly cleaning the glass is achieved, the driving safety of an automobile is improved, and the perception quality and the satisfaction degree of customers are improved.

Description

Technical Field

[0001] This invention relates to a windshield wiper, and more specifically to a windshield wiper arm bushing assembly for use in automobiles. Background Technology

[0002] The windshield wiper is a key safety component of a car, mainly consisting of a wiper motor, linkage mechanism, wiper arm, and wiper blade. The linkage mechanism transmits the motor's torque to the wiper arm and blade components, converting the motor's rotational motion into a oscillating motion, which the wiper blade then uses to scrape the glass, clearing rainwater and debris. The wiper motor is located in the upper part of the driver's compartment of the car (especially in engineering vehicles), connected to the external wiper arm mechanism (wiper arm and blade) via a mounting bracket on the vehicle frame and the wiper arm bushing assembly. It drives the wiper arm mechanism to move, and the wiper blade cleans the glass.

[0003] Currently, for the same vehicle model, different manufacturers use different thicknesses of the body frame mounting plate brackets for the wiper arm bushing assembly. Even within the same manufacturer, the thickness of the body frame mounting plate brackets varies for different models. This results in different bushing lengths being required for different models or manufacturers, necessitating customized production. Customized bushing production complicates processing and significantly increases costs. Furthermore, improper bushing length assembly can lead to insufficient pressure from the wiper blades on the glass, failing to achieve thorough glass cleaning. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing an adjustable wiper arm bushing assembly with adjustable bushing length and good versatility.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an adjustable wiper arm bushing assembly is installed, including a wiper arm shaft, a bushing, a wiper arm, and a ball joint. A groove is provided on the lower part of the bushing, and adjacent inner serrated locking washers and anti-reverse retaining rings are installed on the groove of the bushing.

[0006] A nut is mounted on the swing arm shaft at the upper end of the bushing. A lower flat washer and a rubber pad are mounted on the swing arm shaft between the nut and the upper end of the bushing. An upper flat washer and a retaining ring are mounted sequentially on the swing arm shaft above the nut. An external thread corresponding to the nut is provided on the swing arm shaft at the nut position.

[0007] By adopting the structure of this invention, a groove is added to the bushing, and the locking height of the bushing installation is adjusted by using an inner serrated locking washer and a retaining ring, meeting the installation requirements of bushings of different lengths (i.e., corresponding to the thickness of the vehicle frame mounting plate bracket). This gives the bushing good assembly versatility for different vehicle models or manufacturers, saving development and manufacturing costs. At the same time, the adjustable bushing installation length ensures that the wiper blades apply standard pressure to the glass, achieving comprehensive and thorough glass cleaning, improving driving safety (especially for engineering vehicles), and enhancing customer perceived quality and satisfaction. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of the adjustable wiper arm bushing assembly of the present invention. Detailed Implementation

[0009] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0010] Reference Figure 1 As can be seen, the present invention installs an adjustable wiper arm bushing assembly, including a wiper arm shaft 1, a bushing 7, a wiper arm 10, and a ball head 11. A groove 12 is provided on the lower part of the bushing 7, and adjacent and close-fitting inner serrated locking washers 8 (on the upper position) and anti-reverse retaining rings 9 (on the lower position) are installed on the groove 12 of the bushing.

[0011] A nut 4 is mounted on the swing arm shaft 1 at the upper end of the bushing 7. A lower flat washer 5 (at the upper position) and a rubber pad 6 (at the lower position) are mounted on the swing arm shaft 1 between the nut 4 and the upper end of the bushing 7. An upper flat washer 3 (at the lower position) and a retaining ring 2 (at the upper position) are sequentially mounted on the swing arm shaft 1 at the upper part of the nut 4. That is, the upper flat washer 3 is at the upper part of the nut 4, and the lower flat washer 5 is at the lower part, both of which are fitted onto the swing arm shaft 1. An external thread corresponding to the nut is provided on the swing arm shaft 1 at the nut position.

[0012] This invention involves adding and rotating an inner serrated locking washer 8 (upper position) and a retaining ring 9 (lower position) around the bushing 7 to adjust the required locking height of the bushing. The bushing is then fixedly mounted on the wiper frame mounting plate bracket by a nut 4, a lower flat washer 5, a rubber pad 6, and an inner serrated locking washer 8. The upper end of the bushing is then locked by a nut 4, an upper flat washer 3 (lower position), and a retaining spring 2 (upper position).

Claims

1. An adjustable wiper arm bushing assembly, comprising a wiper arm shaft, bushing, wiper arm, and ball joint, characterized in that: A groove is provided on the lower part of the bushing, and adjacent inner serrated locking washers and anti-reverse retaining rings are installed on the groove of the bushing.

2. The adjustable wiper arm bushing assembly as described in claim 1, characterized in that: A nut is installed on the swing arm shaft and at the upper end of the bushing. A lower flat washer and a rubber pad are installed on the swing arm shaft and between the nut and the upper end of the bushing.

3. The adjustable wiper arm bushing assembly as described in claim 2, characterized in that: An upper flat washer and a retaining ring are sequentially installed on the swing arm shaft and above the nut.

4. The adjustable wiper arm bushing assembly as described in claim 2 or 3, characterized in that: An external thread corresponding to the nut is provided on the swing arm shaft at the nut position.

Images