Hydraulic wiper blade

A wiper blade and hydraulic technology, applied in the field of hydraulic wiper blades, can solve the problems of uneven force on each point of the rubber strip, affecting the wiping cleanliness, high cost, etc., so as to improve the wiping cleanliness and service life, reduce the The effect of water ripples

CN101445096BActive Publication Date: 2010-12-22CHERY AUTOMOBILE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2010-12-22

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Abstract

The invention relates to a hydraulic wiper blade which comprises a rubber strip. The back surface of the rubber strip is fixedly connected to a pressure spring; a hydraulic chamber is formed by surrounding a cavity casing with rod-shaped outer appearance and groove-shaped cross section and the pressure spring and filled with liquid; a cylinder part for accommodating a piston is arranged on the cavity casing; and the piston is positioned at the exposed outer part and matched with a wiper rod in a clipping manner. The invention adopts the cavity casing to replace the prior framework structure and utilizes the principle of hydraulic power transmission to ensure that the pressure from a wiper arm uniformly acts on the rubber strip of the wiper blade, thereby reducing the generation of drain marks and greatly improving the scraping cleanliness and the service life of the wiper blade.
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Description

technical field

[0001] The invention relates to the field of automobiles, in particular to a hydraulic wiper blade. Background technique

[0002] At present, wiper blades are divided into two types: skeleton type wiper blades and boneless wiper blades (also called flat blades). Then the force is transmitted to the rubber strip through the skeleton structure or the clip spring (steel sheet, or elastic guide strip).

[0003] Due to the limited rigidity of the skeleton structure or compression spring, the force cannot be transmitted to all points on the scraper blade evenly, and the force on each point of the rubber strip on the scraper blade is uneven, resulting in many water marks, which affects the scraping degree. At the same time, uneven pressure is also the root cause of jitter and abnormal noise.

[0004] In addition, the cost of the flat scraper is relatively expensive, and the technical requirements are high, and the processing technology is complicated, which is mai...

Examples

Embodiment Construction

[0013] A hydraulic type wiper blade, including a rubber strip 10, the back of the rubber strip 10 is fixedly connected to a compression spring 20, the front of the rubber strip 10 is closely attached to the windshield on the outside of the car, the rubber strip 10 and the compression spring 20 are both The elongated chamber housing 30 with a rod-shaped groove section that matches the curved surface of the windshield and the pressure spring 20 enclose a hydraulic chamber, and the chamber is filled with a liquid 40, which is a liquid with a low viscosity. , such as engine oil, etc., the chamber housing 30 is provided with a cylinder portion 35 for accommodating the piston 31, and a seal is provided between the piston 31 and the chamber housing 30 to prevent the liquid 40 from flowing out of the chamber housing 30, and the piston 31 is in the exposed exterior and The scraper bar 50 snap fits, such as figure 1 , 2 , 5 shown.

[0014] combine figure 2 , 3 5. The outline of the...