Windscreen wiper for a front glazing surface of a motor vehicle
By designing windshield wipers with specific tilt angles and heights, the problem of existing technologies being unsuitable for lightweight electric drive motors has been solved, resulting in longer driving range and lower aerodynamic drag.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- VALEO SYST DESSUYAGE SAS
- Filing Date
- 2025-05-30
- Publication Date
- 2026-07-31
AI Technical Summary
Existing windshield wipers are not suitable for use with lightweight, low-power electric drive motors, which limits the driving range of electric vehicles.
Design a windshield wiper with a specific tilt angle and limited height, including a retainer, wiper blades and a connector, incorporating a lightweight structure to accommodate a low-power electric drive motor and reduce aerodynamic drag.
By reducing aerodynamic drag, a smaller electric drive motor can be used, reducing vehicle weight and increasing the driving range of electric vehicles.
Smart Images
Figure CN224576601U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a windshield wiper for motor vehicles. More specifically, it relates to a windshield wiper with a low drag coefficient. Background Technology
[0002] Motor vehicles are typically equipped with windshield wiper systems used to wipe and clean the windshield and prevent obstruction of the driver's view of their surroundings. These windshield wipers are generally driven by an arm that makes an angled reciprocating movement and have a long wiper blade itself carrying a blade made of a resilient material. These blades rub against the windshield and drain water by removing it from the driver's field of vision. Wipers are manufactured in the form of articulated brackets that hold the blades at multiple discrete locations in conventional versions, or in the form of semi-rigid components in more recent versions (known as the FlatBlade® version) that hold the blades along their entire length. In this second solution, the wiper is attached to the rotating arm of the windshield wiper via a mechanical connector.
[0003] However, for electric vehicles where range is partly dependent on weight, reducing vehicle weight becomes necessary. Therefore, one solution involving the wiping mechanism is to use a smaller and therefore lighter electric drive motor. This solution is particularly suitable for electric vehicles where portability is prioritized over speed. However, this electric drive motor reduces power, making existing wipers unsuitable for this purpose. Utility Model Content
[0004] The purpose of this invention is to at least partially overcome the shortcomings of the prior art and to provide an improved windshield wiper that can be used with a lighter, lower-power electric drive motor.
[0005] Therefore, this utility model relates to a windshield wiper for use on the front embedded glass surface of a motor vehicle, the windshield wiper comprising:
[0006] - A retainer having an upper surface and an opposite lower surface.
[0007] - At least one,
[0008] - Wiper blade, which is mounted on the lower surface of the retainer and is designed to be supported on the surface of the mounted glass, and
[0009] - A connector designed for mechanical attachment to the wiper arm for mounting and hinged the windshield wiper to the wiper arm about a lateral axis.
[0010] The upper surface of the retainer has a lateral tilt angle between 0° and 5° relative to the lateral axis, and the maximum vertical height of the windshield wiper is less than 15 mm.
[0011] According to one aspect of the present invention, the upper surface is flat.
[0012] According to another aspect of the present invention, the upper surface has a zero-degree lateral tilt angle relative to the lateral axis.
[0013] According to another aspect of the present invention, the maximum vertical height of the windshield wiper is less than 12 mm.
[0014] According to another aspect of this utility model, the minimum vertical height of the windshield wiper is greater than 7 mm.
[0015] According to another aspect of the present invention, a windshield wiper includes a single strip extending along the longitudinal length of a retainer.
[0016] According to another aspect of the present invention, the windshield wiper includes an end piece mounted at the end of the retainer. Attached Figure Description
[0017] Further features and advantages of the present invention will become apparent from the following description, given in a non-limiting manner and with reference to the accompanying drawings, in which:
[0018] In these figures, the same elements have the same reference numerals.
[0019] Figure 1 A perspective view of the windshield wipers is shown.
[0020] Figure 2 A three-dimensional cross-sectional view of the windshield wiper is shown.
[0021] Figure 3 It shows Figure 2 A three-dimensional cross-sectional view of the windshield wiper without a connector.
[0022] Figure 4 It shows Figure 2 A three-dimensional cross-sectional view of the windshield wiper at the connector. Detailed Implementation
[0023] The following embodiments are examples. Although the specification relates to one or more embodiments, this does not necessarily mean that every reference numeral refers to the same embodiment, or that these features are applicable only to one embodiment. Individual features of different embodiments may also be combined and / or interchanged to provide other embodiments.
[0024] In this specification, some elements or parameters may be indexed, such as first element or second element, first parameter and second parameter, or first standard and second standard, etc. In this case, the index is only used to distinguish and represent similar but not identical elements, parameters, or standards. Such indexing does not imply that one element, parameter, or standard is superior to another, and such representations are readily interchangeable without departing from the scope of this specification. Such indexing also does not imply any temporal order, for example, when evaluating any given standard.
[0025] In the remainder of this specification, non-limiting uses will be employed. Figures 1 to 4 The longitudinal, vertical, and lateral directions are indicated by a trihedral reference system (L, V, T) fixed relative to the windshield wiper 1. The longitudinal direction L corresponds to the main direction of the wiper blade. The lateral direction T and the vertical direction V are perpendicular to each other and perpendicular to the longitudinal direction L.
[0026] Figure 1 A windshield wiper 1 is shown for the glass surface of a vehicle, particularly the windshield, and is intended to be mounted at the end of the wiper arm of the vehicle.
[0027] The windshield wiper 1 can be a FlatBlade® type wiper with a longitudinal primary orientation L. The windshield wiper 1 includes a retainer 2, a connector 4, and a wiper blade 7, the retainer having an upper surface 2a and an opposite lower surface 2b, the wiper blade being made of a flexible material and capable of contacting the mounted glass plate to be wiped.
[0028] Connector 4 is specifically designed to be mechanically connected to the wiper arm, for example via an adapter, for mounting and hinged windshield wiper 1 to the wiper arm. This hinge is achieved specifically around a transverse axis B perpendicular to the longitudinal direction L.
[0029] like Figures 2 to 4 As shown in more detail, the wiper blade 7 is mounted in the holder 2, more precisely on the lower surface 2b of the holder 2. The wiper blade 7 has a lip 71 for wiping the surface of the mounted glass and a heel 72 forming the interface between the lip 71 and the holder 2. Due to their respective functions, the lip 71 is particularly tough and abrasion-resistant, while the heel 72 provides the flexibility required for optimal flipping of the wiper blade 7 when the wiping direction changes, a flexibility caused in particular by the specific division of the heel 72. Therefore, the wiper blade 7 is formed of a profile, for example, made of an elastomer, which integrates both the lip 71 and the heel 72 in an integral assembly.
[0030] As a complement to the heel 72 of the wiper blade 7, the lower surface 2b of the retainer 2 may therefore include a track 21 extending in the longitudinal direction L. This track 21 has a longitudinal opening in which the wiper blade 7, and more specifically its heel 72, can slide longitudinally. The wiper blade 7 is thus held vertically by the track 21.
[0031] At the end of the retainer 2, the windshield wiper 1 may also include end members 11 and 12 for longitudinally retaining the wiper blade 7 within the track 21.
[0032] The windshield wiper 1 includes at least one longitudinal strip 3, which is arranged in the retainer 2 and together with the retainer 2 forms the structure of the wiper 1 itself.
[0033] Strip 3 may be specifically formed from a one-piece portion comprising a vertically curved flat metal strip such that when the windshield wiper 1 is supported on the mounted glass plate, the supporting force applied by the wiper arm is distributed over the entire length of the wiper blade 7.
[0034] At least one strip 3 can be introduced into at least one dedicated conduit 22 extending longitudinally within the retainer 2.
[0035] End pieces 11 and 12 also allow at least one strip 3 to be longitudinally secured within its dedicated conduit 22.
[0036] Connector 4 is mechanically connected to the arm adapter, for example, via a pivoting connection. For this purpose, connector 4 has one or two cylindrical pins or cavities, for example, having a lateral axis B, for pivotally interacting with the actuating arm or the actuating arm adapter. Thus, connector 4 allows the arm to be mechanically connected to the flat-type wiper 1, and the pivoting connection allows rotation of the wiper 1 relative to the arm.
[0037] Connector 4 can be clamped to retainer 2, more specifically to its upper surface 2a.
[0038] according to Figure 3 and Figure 4 In the illustrated embodiment, the windshield wiper includes a single strip 3 extending along the longitudinal length of the retainer 2, more specifically along its entire length. Thus, the single strip 3 passes vertically beneath the connector 4. Therefore, the retainer 2 may have a lateral opening 23, allowing portions of the edge of the single strip 3 to be exposed, such as... Figure 3 and Figure 4 As shown. Connector 4 can then be directly clamped onto strip 3, and simultaneously secured vertically, longitudinally, and laterally, as shown. Figure 4 What is shown.
[0039] According to one variant (not shown), the windshield wiper may include two strips 3 arranged parallel and side-by-side along a transverse axis, extending, for example, along the entire length of the wiper. These two strips 3 may be specifically inserted into a single conduit 22, or each strip may be inserted into a dedicated longitudinal conduit of the retainer 2. Still in this variant, the retainer 2 may also have lateral openings 23, exposing portions of the edges of these strips 3. The connector 4 can then be clamped directly onto the strips 3, simultaneously securing them vertically, longitudinally, and laterally.
[0040] According to a second variant not shown, the windshield wiper 1 may include two strips 3 arranged in a straight line, one on each side of the connector 4. The connector 4 is then directly secured to the retainer 2.
[0041] like Figure 2 and Figure 3 As shown in more detail, the upper surface 2a of the retainer 2 has a lateral tilt angle between 0° and 5° relative to the lateral axis B, such that the maximum vertical height H of the windshield wiper 1 is less than 15 mm, preferably 12 mm. Without considering the connector 4, the height H of the windshield wiper 1 is more specifically understood as the height of the assembly formed by the wiper blade 7, at least one strip 3, and the retainer 2.
[0042] The minimum vertical height H of the windshield wiper 1 can be particularly greater than 7 mm.
[0043] More specifically, the upper surface 2a can be flat. When the upper surface 2a is flat, it can have a zero-degree lateral tilt angle relative to the lateral axis B.
[0044] Especially for vehicles designed to operate at reduced speeds, particularly a maximum speed of 90 km / h, this specific lateral tilt angle, combined with a limited maximum vertical height H, allows for the limitation of windshield wiper aerodynamic drag. Therefore, even at a maximum speed of 90 km / h, the windshield wipers, which will experience the strongest aerodynamic loads, will remain pressed against the vehicle's windshield due to the limited aerodynamic drag. Limiting aerodynamic drag also means that the electric drive motor uses less electricity. Therefore, a smaller, less power-consuming electric drive motor can be used.
[0045] Furthermore, the absence of a prominent deflector on the upper part 2a of the retainer 2 allows for weight limitation of the windshield wipers. As a result, a smaller and therefore lighter electric drive motor can be used, further limiting the overall weight of the vehicle. This enables an increase in the driving range, particularly for electric vehicles.
Claims
1. A windshield wiper (1) for use on the front embedded glass surface of a motor vehicle, the windshield wiper comprising: - A retainer (2) having an upper surface (2a) and an opposite lower surface (2b). - At least one item (3). - Wiper blade (7), which is mounted on the lower surface (2b) of the retainer (2) and is intended to be supported on the surface of the mounted glass, and - Connector (4), the connector being designed to be mechanically connected to the wiper arm for mounting and hinged the windshield wiper (1) about a lateral axis (B) onto the wiper arm, The feature is that the upper surface (2a) of the retainer (2) has a lateral tilt angle between 0° and 5° relative to the lateral axis (B), and the maximum vertical height (H) of the windshield wiper (1) is less than 15 mm.
2. Windscreen wiper (1) according to claim 1, characterized in that The upper surface (2a) is flat.
3. Windscreen wiper (1) according to claim 2, characterized in that The upper surface (2a) has a lateral tilt angle of zero degrees relative to the lateral axis (B).
4. The windshield wiper (1) according to claim 1, characterized in that, The maximum vertical height (H) of the windshield wiper (1) is less than 12 mm.
5. The windscreen wiper (1) according to any one of claims 1 to 4, characterized in that The minimum vertical height (H) of the windshield wiper (1) is greater than 7 mm.
6. Windscreen wiper (1) according to any one of claims 1 to 4, characterized in that The windshield wiper includes a single strip (3) extending along the longitudinal length of the retainer (2).
7. Windscreen wiper (1) according to any one of claims 1 to 4, characterized in that The windshield wiper includes end pieces (11, 12) mounted at the end of the retainer (2).