Boneless windshield wiper
By designing a structure in the frameless wiper where the rubber strip notch and steel sheet work together, a uniform pressure distribution of the rubber strip on the glass is achieved, solving the problems of rubber strip deformation and abnormal noise, and improving the cleaning effect and durability of the wiper.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- DONGGUAN HUIHONG AUTOMATION EQUIP CO LTD
- Filing Date
- 2024-11-04
- Publication Date
- 2026-05-08
AI Technical Summary
Existing frameless wipers are prone to rubber strip deformation during use, leading to abnormal noise and incomplete wiping.
By designing a wiper structure in which the rubber strip has notches at both ends, the steel sheet and the rubber strip work together to generate pressure on the glass, the curvature of the steel sheet is reduced, and the pressure on the glass is evenly distributed throughout the rubber strip.
It improves the adhesion and durability of the rubber strip to the glass, reduces abnormal noise, and enhances the cleaning effect and lifespan of the wipers.
Smart Images
Figure CN121989864A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a windshield wiper, particularly a frameless windshield wiper. Background Technology
[0002] Currently, mainstream frameless wiper blades on the market consist of two steel blades, a mounting bracket, and rubber strips. The force with which the rubber strip scrapes the glass is determined by the force exerted by the steel blades pressing on the rubber strip. To ensure that all parts of the rubber strip can reach the glass, the steel blade has a relatively large curvature, resulting in greater pressure at both ends of the steel blade. Therefore, the rubber strips at both ends of the frameless wiper blade are more prone to deformation. After a period of time, frameless wiper blades are prone to making abnormal noises when working, and of course, they will not clean the glass properly. Summary of the Invention
[0003] To overcome these shortcomings, this invention provides a frameless wiper blade that distributes force more evenly and maintains a more consistent fit when adhering to the glass. This makes the wiper blade more durable, provides a cleaner wipe, and eliminates noise.
[0004] The technical solution of this invention is: to provide a method for applying force to glass by a windshield wiper blade, wherein the pressure of the wiper blade against the glass is generated by the simultaneous action of the steel sheet and the rubber strip. The wiper blade implementing this method comprises a connecting seat, a fixing seat, two steel sheets, a deflector, a rubber strip, and end caps, wherein the rubber strip has notches at both ends; the two steel sheets have notches on their inner sides after assembly; there is a locking strip with two locking heads in the middle of the end caps; the two locking heads of the end caps lock the steel sheet and the rubber strip; the length of the rubber strip after assembly is longer than that of the rubber strip in its natural state, so that the rubber strip exerts pressure on the glass surface at all points, the curvature of the steel sheet can be smaller, and the pressure of the rubber strip on the glass is more uniform throughout the wiper.
[0005] The beneficial effects of this invention are: the wiper blade and the glass have a better fit, and the pressure of the wiper blade on the glass is more uniform, thus making the frameless wiper blade more effective at wiping the glass and more durable. Attached Figure Description
[0006] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention.
[0007] Figure 2 This is a schematic diagram of an embodiment of the present invention where the adhesive strip is not installed on the main frame.
[0008] Figure 3 This is a schematic diagram of the fit between the end rubber strip, steel sheet, and end cap in one embodiment of the present invention.
[0009] Figure 4 This is an exploded view of the mating position of the end rubber strip, steel sheet, and end sleeve cap according to an embodiment of the present invention.
[0010] Figure 5 This is a schematic diagram of the structure of one end of the adhesive strip in an embodiment of the present invention.
[0011] Figure 6 This is a schematic diagram of the steel sheet in an embodiment of the present invention.
[0012] Figure 7 This is a front view of the end cap according to an embodiment of the present invention.
[0013] Figure 8 This is a top view of the end cap of an embodiment of the present invention.
[0014] Figure 9 This is a left view of the end cap of an embodiment of the present invention.
[0015] In the diagram, 1. Connecting seat, 2. Fixing seat, 3. End cap, 31. End cap clip, 32. Clip groove, 4. Steel sheet, 41. End notch, 42. Middle notch, 5. Guide fin, 6. Rubber strip, 61. Rubber strip notch. Detailed Implementation
[0016] To clearly illustrate the technical solution of the present invention, the present invention will now be further described in conjunction with the accompanying drawings and embodiments.
[0017] A method for applying force to windshield wipers, wherein the assembled wiper blade is longer than its natural state, and the pressure exerted by the wiper blade against the glass is generated by the simultaneous action of a steel strip and the wiper blade. See also this frameless wiper. Figure 1 The frameless wiper consists of a connecting seat (1), a fixing seat (2), two steel sheets (4), a guide fin (5), a rubber strip (6), and end caps (3) at both ends. The two steel sheets (4) have a central notch (42) to limit the position of the fixing seat (2). The rubber strip (6) has rubber strip notches (61) at both ends. After the two ends of the two steel sheets (4) are assembled, there are steel sheet end notches (41) on the opposite inner sides. The end caps (3) at both ends have end cap clips (31) and clip grooves (32) in the middle. When the end cap clips (31) are assembled, they lock the steel sheet end notches (41) and the rubber strip notches (61). For their specific relative positions, see [link to details]. Figure 3 , Figure 4 .
[0018] Before assembly, the distance between the notches (61) at the two ends of the rubber strip (6) is less than the distance between the notches (41) at the two ends of the steel sheet (4). See details. Figure 2After assembly, the distance between the notches (61) at both ends of the rubber strip (6) and the distance between the notches (41) at both ends of the steel sheet (4) are the same. The rubber strip (6) will be moderately stretched, which will cause the rubber strip (6) to generate a certain pressure on its inward bending surface. After the wiper arm is installed, the force exerted by the rubber strip on the glass will be basically the same. The force exerted by the wiper arm on the glass through the steel sheet and rubber strip will also be more consistent. Moreover, since the rubber strip itself has an inward bending force, the rubber strip naturally has a bonding force on the glass at all points. The curvature of the steel sheet is to improve the adhesion of the wiper to the glass, thereby reducing the curvature of the steel sheet. This design of the frameless wiper rubber strip will not result in the rubber strip at both ends being easily deformed due to the large curvature of the steel sheet of ordinary frameless wipers. This will improve the wiper's ability to clean the glass, reduce the abnormal noise caused by the deformation of the rubber strip, and extend the wiper's service life.
[0019] To further explain in detail the assembly and fit of the two end steel blades (4), rubber strips (6), and end caps (3) of the wiper, a series of other materials are also provided. Figure 5 (Structural diagram of one end of the adhesive strip) Figure 6 (Steel sheet structure diagram) and Figure 7 , Figure 8 , Figure 9 (View of end cap). During assembly, the notch (41) at the end of the steel sheet (4) and the notch (61) at the end of the rubber strip (6) are both held in place by the end cap clip (31) of the end cap (3), and the two steel sheets (4) are also held in place by the clip groove (32). This ensures that the steel sheet and the rubber strip will not move after assembly. This ensures the stability of the rubber strip length. Since the rubber strip is longer after assembly than it is in its natural state, there is pressure on the glass surface at all points of the rubber strip, the curvature of the steel sheet can be smaller, and the pressure of the rubber strip on the glass at all points of the wiper is more uniform.
Claims
1. A method for applying force to glass using frameless wipers, characterized in that: The pressure exerted on the glass by the frameless wiper blade is achieved by the combined action of the steel sheet and the rubber strip.
2. A frameless wiper blade implementing the method of claim 1, comprising a connecting seat, a fixing seat, two steel sheets, a baffle, a rubber strip, and end caps, characterized in that: There are notches at both ends of the adhesive strip.
3. The frameless wiper according to claim 2, characterized in that: The assembled length of the rubber strip is longer than the rubber strip in its natural state.
4. The frameless wiper blade according to claim 2, characterized in that: After the two steel sheets are assembled, there are notches on the inner sides of the opposite ends.
5. The frameless wiper blade according to claim 2, characterized in that: There is a locking strip with two locking heads in the middle of the end caps.
6. The frameless wiper according to claim 2, characterized in that: The two clips at both ends of the end cap clip hold the steel sheet and the rubber strip in place.