CN110962802A - Covering element for a wiper device, wiper arm and wiper device - Google Patents
Covering element for a wiper device, wiper arm and wiper device Download PDFInfo
- Publication number
- CN110962802A CN110962802A CN201910923898.2A CN201910923898A CN110962802A CN 110962802 A CN110962802 A CN 110962802A CN 201910923898 A CN201910923898 A CN 201910923898A CN 110962802 A CN110962802 A CN 110962802A
- Authority
- CN
- China
- Prior art keywords
- wiper
- wiper arm
- cover element
- wind
- wind deflector
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000008878 coupling Effects 0.000 claims abstract description 16
- 238000010168 coupling process Methods 0.000 claims abstract description 16
- 238000005859 coupling reaction Methods 0.000 claims abstract description 16
- 238000003825 pressing Methods 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims 1
- 239000013598 vector Substances 0.000 description 8
- 238000005520 cutting process Methods 0.000 description 2
- 239000003599 detergent Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009420 retrofitting Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/0408—Means for influencing the aerodynamic quality of wipers, e.g. clip-on wind deflectors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Quality & Reliability (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The invention relates to a cover element which is provided for coupling to a wiper device, wherein the wiper device comprises at least one wiper arm and a wiper blade coupled thereto, wherein the cover element has a wiper arm receptacle which is provided for coupling, in particular releasably coupling, the cover element to the wiper arm. The invention proposes that the cover element has a windshield surface which is provided to block the inflowing air and to press the wiper arm and/or the wiper blade against the vehicle window.
Description
Technical Field
The invention relates to a cover element for coupling to a wiper device, wherein the wiper device comprises at least one wiper arm and a wiper blade coupled to the wiper arm. The invention also relates to a wiper arm having such a cover element and to a wiper device having such a cover element.
Background
A wiper device is known, which comprises a wiper arm and a wiper blade, as well as an adapter unit for coupling the wiper arm with the wiper blade. A disadvantage of such wiper devices is that, in order to ensure sufficient wiping efficiency, the wiper arm must always exert a high contact pressure force in order to press the wiper blade against the vehicle window.
Disclosure of Invention
The invention relates to a cover element which is provided for coupling to a wiper device, wherein the wiper device comprises at least one wiper arm and a wiper blade coupled thereto, wherein the cover element has a wiper arm receptacle which is provided for coupling, in particular releasably coupling, the cover element to the wiper arm. The invention proposes that: the cover element has a windshield surface which is provided to block the inflowing air and to press the wiper arm and/or the wiper blade against the vehicle window.
This has the advantage that the windshield surface presses the wiper blade against the vehicle window during fast driving due to the driving wind flowing onto it. This increases the overall pressing force of the wiper blade on the vehicle window and improves the wiping efficiency. In this way, the required contact pressure with which the wiper arm presses the wiper blade against the vehicle window is reduced. It is possible to use a wiper arm with a lower contact pressure, which is more advantageous and/or simpler and/or more reliable and/or more compact, in particular with a smaller spring for applying the contact pressure. The covering element according to the invention ensures that the force generated by aerodynamic effects, in particular wind, in particular driving wind, presses the wiper blade against the vehicle window.
In particular, the cover element enables retrofitting of an already existing wiper device, so that the wiping efficiency and reliability of the wiper device are improved.
In this context, one piece is to be understood to mean, in particular, a material-locking (stoffschl ü ssig) connection, for example, by a welding process and/or an adhesive process, and, in particular, a form-on (angle former), for example, by being produced from a cast part and/or by being produced in a single-component or multicomponent injection molding method.
The wiper arm receptacle is to be understood in particular as a coupling element which is provided for coupling, in particular releasably coupling, the cover element to the wiper arm, preferably at least in sections form-fitting (formschl ü ssigen). for example, the wiper arm receptacle can be designed as a receiving channel in the cover element, into which the wiper arm can be inserted, so that the receiving channel at least in sections, preferably completely (volllmf ä nglich), grips or encloses the wiper arm.
It is conceivable for the cover element to have further receptacles for components of the wiper device, for example for a detergent duct, in particular a detergent duct which leads along the wiper arm.
Advantageous refinements of the cover element are possible by means of the features specified in the dependent claims.
The aerodynamics of the covering element is further improved when the wind deflector surface encloses a main angle of between 25 ° and 65 °, preferably between 40 ° and 50 °, with the wind inflow direction.
The main angle is understood to be the angle which the wind deflector surface has with respect to the wind inflow direction. The main angle is advantageously measured around the wiper arm direction. A positive principal angle between 0 ° and 90 ° describes a wind deflector surface which faces at least partially in the direction of the wind inflow. The closer the primary angle is to 90 °, the more the wind deflector surface faces the wind inflow direction. The main angle is advantageously spread between the wind inflow direction and a projection of the wind inflow direction on the wind deflector surface, wherein the projection advantageously follows a projection plane in which the wind inflow direction lies and which is arranged perpendicular or largely perpendicular to the wiper arm direction. It is also possible for the projection plane to be spanned by the wind inflow direction and the normal vector or the average normal vector of the wind deflector surface. In curved or uneven wind deflector surfaces, it is conceivable that the principal angle extends between the wind inflow direction and a tangent plane to a marked point of the wind deflector surface, for example the center point, or to a tangent plane to the average normal vector of the wind deflector surface. A central normal vector is understood to mean a vector which represents the average over all or almost all normal vectors of the wind deflector surface.
In the following, the wind inflow direction is to be understood in particular as the direction in which the driving wind flows through the wiper device mounted on the vehicle pane and the cover element coupled thereto, preferably in the non-wiping idle state.
In an alternative embodiment, the main angle is understood to be the angle enclosed between the surface of the wind deflector and the base surface of the cover element. It is advantageously provided that, during operation, the base surfaces of the cover elements are arranged at least largely parallel or largely parallel to the direction of the wind inflow.
The wiper arm direction is to be understood as meaning a direction which is arranged in the direction of the greatest longitudinal extent of the wiper arm on which the cover element is mounted. In the uninstalled state, the wiper arm direction is the direction on the cover element in which the installed wiper arm points, in particular in the basic position. The longitudinal direction of the cover element is to be understood as meaning the direction in which it is oriented along the greatest longitudinal extension of the cover element. Advantageously, the wiper arm direction is arranged parallel or largely parallel to the longitudinal direction.
In particular, an arrangement largely parallel or largely parallel to the second axis is to be understood as meaning that the first axis encloses an angle with the second axis which deviates from 0 ° by not more than 8 °, advantageously not more than 5 °, particularly advantageously not more than 2 °.
The arrangement of the first axis largely perpendicular or largely perpendicular to the second axis is to be understood as meaning that the first axis encloses an angle with the second axis which deviates from 90 ° by not more than 8 °, advantageously not more than 5 °, particularly advantageously not more than 2 °.
The aerodynamic properties are further improved by the wind deflector surface being at least partially concavely configured in the direction of the wind inflow direction. The pressing force generated by the traveling wind can be further improved. A recess is to be understood in particular to mean that the wind deflector surface is arched into the cover element.
The covering element is further improved if the wind deflector surface is at least partially convex in the direction of the wind inflow. The convex course of the wind deflector surface makes it possible to maintain a largely laminar or swirl-free wind flow along the wind deflector surface. This enables a stable and largely constant pressing force to be achieved. In particular, vibrations are prevented in this way, which can lead to disturbing noise development and/or can damage the wiper device or impair its wiping efficiency. A projection is to be understood in particular as meaning that the wind deflector surface is arched out of the covering element.
Particularly advantageous are wind deflector surfaces which are locally convex and locally concave. In this way, the contact pressure and/or the flow-around behavior of the driving wind can be precisely adapted to the technical requirements. For example, the wind deflector surface may be configured convexly at the windward edge of the wind deflector surface and concavely at the leeward edge of the wind deflector surface.
In an advantageous variant, the wind deflector surface is at least partially flat in the direction of the wind inflow direction. This makes it possible to precisely adapt the contact pressure and/or the turbulence behavior of the traveling wind.
A wind-front edge is to be understood in particular as an edge of the wind deflector surface, preferably a circumferential partial section of the wind deflector surface, which in the non-wiping, idle state of the wiper device (comprising wiper blade, wiper arm and cover element) mounted on the vehicle window is arranged closest to the wind inflow direction, so that the driving wind first flows over the wind-front side of the wind deflector surface or strikes it. The wind deflector surface is preferably designed such that the windward edge is arranged at least partially perpendicular or largely perpendicular to the wind inflow direction in the non-wiping idle state of the wiper device mounted on the vehicle pane.
If the wiper arm receptacle encloses a wiper arm angle of between 0 ° and 30 °, preferably between 10 ° and 20 °, with the wind deflector surface, it is advantageous that the wiper arm can be received particularly aerodynamically advantageously. This improves the aerodynamic properties of the system consisting of the cover element and the wiper arm and, overall, of the wiper device. A wiper arm angle is understood to mean, in particular, an angle which is spread between a receiving direction, which points in the direction of maximum extension of the wiper arm receptacle perpendicular to the wiper arm direction, and the wind deflector surface. The cover element mounted on the wiper arm is arranged at a wiper arm angle relative to the wiper arm.
If the wind deflector surface with its leeward edge projects at least 1 mm, preferably at least 2 mm, particularly preferably at least 5 mm, beyond the base surface of the cover element in the direction of the wind inflow, this has the advantage that the turbulence behind the wind deflector surface can be minimized. In this way, a flow deflector is formed, which allows a particularly advantageous air flow.
The wiper arm with the cover element according to the invention has the advantage that, due to the improved aerodynamic properties, it is arranged particularly low-vibration in the driving wind and therefore has an increased durability.
A wiper device having a wiper arm and a wiper blade coupled thereto, wherein the wiper arm has a covering element according to the invention, has the advantage that the operation of the wiper blade is particularly reliable.
Drawings
Embodiments of a covering element according to the invention and of a wiper device having a wiper arm, a wiper blade and a covering element according to the invention are shown in the drawings and explained in detail in the following description. Wherein:
fig. 1 shows a wiper device with a cover element, a wiper blade and a wiper arm, and
fig. 2 shows a cross-sectional view of the cover element.
Detailed Description
In different embodiment variants, identical components are provided with the same reference numerals.
Fig. 1 schematically shows a side view of a wiper device 10 having an adapter unit 12, a wiper arm 14 and a wiper blade 16. In fig. 1, the adapter unit is shown in the mounted position. The wiper blade 16 is configured as a flat wiper blade. The wiper blade 16 is provided for cleaning a vehicle window 18. The adapter unit is provided in particular for coupling, preferably releasable coupling, between the wiper arm and the wiper blade. Preferably, the adapter unit can realize a reversible or pivotable mounting, so that the wiper arm can be pivoted or pivoted about a mounting axis relative to the wiper blade. The wiper arm 16 has a wiper rod 24. In this embodiment, the main longitudinal extension direction of the wiper arm adapter unit is arranged parallel to the wiper arm direction 26. The main longitudinal extension direction of the wiper blade is arranged parallel to the wiper arm direction. In an advantageous variant, the main longitudinal extension direction of the wiper arm adapter unit is arranged at least largely parallel to the wiper arm direction 26. In an advantageous variant, the main longitudinal extension direction of the wiper blade is arranged at least largely parallel to the wiper arm direction.
The wiper arm 16 has a cover element 20. In this embodiment, the cover element 20 is arranged on the wiper rod 24 by way of example. The covering element 20 has a wind deflector surface 22.
Fig. 2 shows a sectional view of the cover element 20. Fig. 2 corresponds to a section along the line II-II in fig. 1. The drawing plane of fig. 2 is arranged perpendicular to the wiper arm direction 26. The wind deflector surface 28 encloses a main angle 32 of 35 ° with the wind inflow direction 30. The principal angle is spanned between the wind inflow direction and the tangent plane to the mean normal vector 34 of the wind deflector surface. The cutting plane is perpendicular to the drawing plane of fig. 2 or parallel to the wiper arm direction 26 and is indicated in fig. 2 by a section 35 of the cutting plane from the drawing plane.
In this embodiment, the wind deflector surface is configured locally concave. Starting from the windward edge 36, the wind deflector surface initially extends concavely in the direction of the wind inflow direction 30. The windward edge 36 (see fig. 1) is marked in fig. 2 with a front point 40 located on the windward edge 36.
Starting from the leeward edge 42, the wind deflector surface extends first concavely in the direction opposite to the wind inflow direction 30. Leeward edge 42 (see fig. 1) is marked in fig. 2 with a rear point 44 located on leeward edge 42.
In this embodiment the wind deflector surface is partially convexly configured. In the middle region of the wind deflector surface, the wind deflector surface extends convexly in the direction of the wind inflow direction 30 at the foot point (Fusspunkt) of the normal vector 34.
One face of the cover element is of convex design, which is to be understood in particular to mean that this face is arched out of the cover element. One surface of the cover element is designed concavely, which is to be understood in particular to mean that this surface is arched into the cover element.
In this exemplary embodiment, the cover element 20 has a wiper arm receptacle 46. The wiper arm receptacle 46 is provided for receiving the wiper arm or the wiper rod 24. The wiper arm receptacle is designed, for example, as a receiving channel in the cover element, into which the wiper arm or the wiper rod can be inserted. The receiving channel extends, for example, largely parallel to the wiper arm direction. The wiper arm receptacle encloses a wiper arm angle 48 of, for example, 15 ° with the wind deflector surface. In particular, the wiper arm receptacle encloses a wiper arm angle 48 of 15 ° with the wind deflector surface in the wind inflow direction 30.
The wind deflector surface projects with its leeward edge 42 in the wind inflow direction, for example, beyond the base surface 52 of the cover element by an overhang distance 50 of 3 mm. Advantageously, the cover element base surface 52 is arranged parallel or largely parallel to the wind inflow direction 30. In such an advantageous embodiment, the main angle 32 is the angle enclosed by the wind deflector surface 28 and the covering element base surface 52.
In an advantageous embodiment, the wind deflector surface 22 has a modified or special surface structure. The surface may be at least partially roughened and/or have a sharkskin structure and/or have a golf ball structure. This surface structure affects the air flow through it. In this way, the aerodynamic properties of the wind deflector surface can be improved. In particular, the contact pressure acting on the windshield surface can be precisely adjusted by selecting the type and arrangement of the modified surface structure.
Claims (8)
1. A cover element (20) which is provided for coupling to a wiper device, wherein the wiper device comprises at least one wiper arm and a wiper blade coupled thereto, wherein the cover element has a wiper arm receptacle which is provided for coupling, in particular releasably coupling, the cover element to the wiper arm, characterized in that the cover element has a wind deflector surface which is provided for blocking inflowing air and for pressing the wiper arm and/or the wiper blade against a vehicle pane.
2. Covering element according to claim 1, characterized in that the wind deflector surface encloses a main angle of between 25 ° and 65 °, preferably between 40 ° and 50 °, with the wind inflow direction.
3. Covering element according to one of the preceding claims, characterized in that the wind deflector surface is at least partially concavely configured in the direction of the wind inflow direction.
4. Covering element according to one of the preceding claims, characterized in that the wind deflector surface is at least partially convexly configured in the direction of the wind inflow direction.
5. Covering element according to any of the preceding claims, characterized in that the wiper arm receiving portion encloses a wiper arm angle with the wind deflector surface of between 0 ° and 30 °, preferably between 10 ° and 20 °.
6. Covering element according to one of the preceding claims, characterized in that the wind deflector surface projects with a leeward edge at least 1 mm, preferably at least 2 mm, particularly preferably at least 5 mm, beyond the covering element base surface in the direction of the wind inflow.
7. Wiper arm with a cover element according to one of the preceding claims.
8. Wiper device having a wiper arm and a wiper blade coupled thereto, wherein the wiper arm has a cover element according to one of claims 1 to 6.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018216681.1 | 2018-09-28 | ||
| DE102018216681.1A DE102018216681A1 (en) | 2018-09-28 | 2018-09-28 | Cover element for a wiper device, wiper arm and wiper device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110962802A true CN110962802A (en) | 2020-04-07 |
Family
ID=69781049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910923898.2A Pending CN110962802A (en) | 2018-09-28 | 2019-09-27 | Covering element for a wiper device, wiper arm and wiper device |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN110962802A (en) |
| DE (1) | DE102018216681A1 (en) |
| FR (1) | FR3086616B1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1271317A (en) * | 1997-09-25 | 2000-10-25 | 日本雨刷片股份有限公司 | Wiper blade with wind deflector |
| WO2014122113A1 (en) * | 2013-02-07 | 2014-08-14 | Robert Bosch Gmbh | Wind deflector device for a wiper blade |
| CN104512380A (en) * | 2013-10-08 | 2015-04-15 | 罗伯特·博世有限公司 | Wiper device |
| CN105324281A (en) * | 2013-06-26 | 2016-02-10 | 罗伯特·博世有限公司 | Wiper arm arrangement |
| CN112469601A (en) * | 2018-07-30 | 2021-03-09 | 罗伯特·博世有限公司 | Wiper arm adapter unit and adapter unit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3525739A1 (en) * | 1985-07-19 | 1987-01-29 | Swf Auto Electric Gmbh | WIPER ARM, ESPECIALLY FOR WIPING SYSTEMS ON MOTOR VEHICLES AND METHOD FOR THE PRODUCTION THEREOF |
-
2018
- 2018-09-28 DE DE102018216681.1A patent/DE102018216681A1/en active Pending
-
2019
- 2019-09-26 FR FR1910607A patent/FR3086616B1/en active Active
- 2019-09-27 CN CN201910923898.2A patent/CN110962802A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1271317A (en) * | 1997-09-25 | 2000-10-25 | 日本雨刷片股份有限公司 | Wiper blade with wind deflector |
| WO2014122113A1 (en) * | 2013-02-07 | 2014-08-14 | Robert Bosch Gmbh | Wind deflector device for a wiper blade |
| CN105324281A (en) * | 2013-06-26 | 2016-02-10 | 罗伯特·博世有限公司 | Wiper arm arrangement |
| CN104512380A (en) * | 2013-10-08 | 2015-04-15 | 罗伯特·博世有限公司 | Wiper device |
| CN112469601A (en) * | 2018-07-30 | 2021-03-09 | 罗伯特·博世有限公司 | Wiper arm adapter unit and adapter unit |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3086616A1 (en) | 2020-04-03 |
| DE102018216681A1 (en) | 2020-04-02 |
| FR3086616B1 (en) | 2022-12-16 |
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