EP4433336A1 - Wischblatt, insbesondere für ein kraftfahrzeug - Google Patents
Wischblatt, insbesondere für ein kraftfahrzeugInfo
- Publication number
- EP4433336A1 EP4433336A1 EP22803337.9A EP22803337A EP4433336A1 EP 4433336 A1 EP4433336 A1 EP 4433336A1 EP 22803337 A EP22803337 A EP 22803337A EP 4433336 A1 EP4433336 A1 EP 4433336A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- section
- wiper blade
- cavity
- width
- lip
- 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
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
- B60S1/38—Wiper 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
- B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
- B60S1/38—Wiper blades
- B60S2001/3827—Wiper blades characterised by the squeegee or blade rubber or wiping element
- B60S2001/3836—Wiper blades characterised by the squeegee or blade rubber or wiping element characterised by cross-sectional shape
Definitions
- Wiper blade in particular for a motor vehicle
- the invention relates to a wiper blade, in particular for a motor vehicle, according to the species of the independent claim.
- Some wiper blades with a wiper strip which is held between a first spring rail section and a second spring rail section by a fastening section are already known, which have a substantially triangular lip section which has a plurality of parallel incisions.
- DE 10 2019 214976 A1 shows such a wiper blade.
- the wiper blade according to the invention with the features of the main claim has the advantage that a cavity section is provided between the fastening section and the lip section. This achieves a better wiping result without increasing the costs for the wiper blade.
- the measures listed in the subclaims result in further advantageous developments and improvements of the features specified in the main claim.
- a simple and cost-effective embodiment results from the fact that the cavity section has a substantially rectangular cross-section.
- the fastening section is essentially T-shaped, since the wiper strip is held securely as a result.
- the first and/or second spring rail section is arranged between the cavity section and an upper bar of the fastening section, since the wiper strip is held securely in this way.
- the lip section is symmetrical in cross-section and has exactly two incisions on each side. Extensive tests have shown that a particularly good wiping result is then achieved.
- the incisions, in particular two, preferably exactly two, further tilting webs are formed, since this further improves the wiping pattern. It is particularly advantageous here if the first tilting web has a first width and one of the further tilting webs has a second width and the second width is the same as or smaller than the first width.
- the incisions have an incision width of less than 1 mm, in particular less than 0.8 mm, preferably less than 0.5 mm.
- Fig. 1 shows a wiper blade according to the invention in a schematic side view
- Fig. 2 shows a cross section through a wiper strip of a wiper blade according to the invention.
- FIG. 1 shows a wiper blade 10 according to the invention in a schematic side view.
- This includes a spring rail 12 to which a fastening means 14 for fastening to a wiper arm, not shown here for reasons of clarity, is fastened.
- a wiper strip 16 is arranged, which carries a lip section 18 on its side facing away from the spring rail 12, which is able to wipe moisture from a pane 20 (FIG. 2) during operation.
- the wiper blade 10 has a longitudinal extent, with the fastening element 14 being arranged approximately in the center of the longitudinal extent. End caps, not designated in any more detail, are arranged at the ends of the longitudinal extent.
- FIG. 2 shows a cross section through the wiper strip 16 of a wiper blade 10 according to the invention.
- the wiper strip 16 is mirror-symmetrical about an imaginary axis of symmetry S. In the mounted position, the wiper strip 16, more precisely the lip section 18 of the wiper strip 16, rests on the pane 20 in order to wipe off moisture from it.
- the wiper strip 16 is constructed essentially in three parts.
- a cavity portion 22 is provided above the lip portion 18 .
- a fastening section 24 adjoins the cavity section 22 .
- the fastening section 24 is T-shaped and comprises an upper beam 26 and a web 28.
- Lip section 18 and cavity section 22 are connected via a first tilting web 30.
- This first tilting web 30 has a first width Bl.
- the first tilting web height SK corresponds to the height of the first tilting web 30 and is approximately 0.6 mm.
- a retaining groove 32 is formed in cross-section on the left and right.
- a first spring rail section 34 is seated in one retaining groove 32 and a second spring rail section 36 is seated in the other retaining groove 32.
- the length of the web 28 corresponds approximately to the thickness of the first spring rail section 34 or the second spring rail section 36, so that the wiper strip 16 is positioned between the first spring rail section 34 and the second spring rail section 36 is securely held in the vertical direction.
- the lip section 18 has two incisions 38 on the left and right in cross section. Each incision 38 is horizontal and spaced from the axis of symmetry S . As a result, and consequently due to the depth of the incisions 38, further tilting webs 40 are produced which have a second width B2.
- the incisions 38 have a cutting width SB of approximately 0.4 mm. This results in a second tilting bar height that corresponds to the cutting width SB.
- the cavity portion 22 is generally rectangular in shape and hollow in its interior. As a result, the cavity section 22 comprises an upper wall 42 on which the web 28 is arranged approximately centrally. Furthermore, the cavity section 22 comprises a lower wall 44 on which the first tilting web 30 is arranged approximately in the middle. In this case, the lower wall 44 is designed somewhat thinner than the upper wall 42, so that it has a higher elasticity. The lower wall 44 is wider in cross-section than the overall width of the lip section 18.
- the width of the lower wall 44 is selected in such a way that when the lip section 18 tilts about the first tilting web 30, the lip section 18 moves against the lower wall 44 able to support.
- the side walls 46 arranged between the upper wall 42 and the lower wall 44 are angled here, so that the lower wall 44 is somewhat narrower in cross section than the upper wall 42.
- the total width of the cavity section 22 in cross section is about two to four times, preferably two up to three times the greatest width of the lip section 18.
- the first width Bl of the first tilting web 30 is slightly larger than the second width B2 of the additional tilting webs 40.
- the additional tilting webs 40 can also have a different width; in particular, the width of the additional tilting webs 40 can vary starting from the first tilting web 30 gradually decrease.
- the cutting width SB of the incisions 38 can also be different, in particular gradually increasing starting from the first tilting web 30 .
- the wiper strip 16 is extruded from EPDM.
- a co-extrusion process is used here, but alternatively only a single plastic can be used.
- the area of the lip section 18 is made of somewhat softer EPDM than the remaining area of the wiper strip 16.
- the cavity section 22 is therefore harder than the lip section 16.
- the cavity section 22 has greater damping than the lip section 16.
- the fastening section 24 can also consist of a stronger plastic, so that the wiper strip is extruded from three different plastics.
- the cavity of the cavity portion 22 may be open on both sides so that air is inside.
- the ends of the longitudinal extent of the cavity section 22 can also be closed and the cavity can be filled with gas or compressed air in particular.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Seal Device For Vehicle (AREA)
- Pivots And Pivotal Connections (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021212878.5A DE102021212878A1 (de) | 2021-11-16 | 2021-11-16 | Wischblatt, insbesondere für ein Kraftfahrzeug |
| PCT/EP2022/081901 WO2023088867A1 (de) | 2021-11-16 | 2022-11-15 | Wischblatt, insbesondere für ein kraftfahrzeug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4433336A1 true EP4433336A1 (de) | 2024-09-25 |
Family
ID=84358972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22803337.9A Pending EP4433336A1 (de) | 2021-11-16 | 2022-11-15 | Wischblatt, insbesondere für ein kraftfahrzeug |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4433336A1 (de) |
| CN (1) | CN118317897A (de) |
| DE (1) | DE102021212878A1 (de) |
| WO (1) | WO2023088867A1 (de) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2869278B1 (fr) * | 2004-04-27 | 2006-08-04 | Peugeot Citroen Automobiles Sa | Raclette d'essuyage pour balai d'essuie-glace de vehicule automobile |
| DE102005054142A1 (de) * | 2005-11-14 | 2007-05-16 | Bosch Gmbh Robert | Wischgummi |
| DE102019214976A1 (de) | 2019-09-30 | 2021-04-01 | Robert Bosch Gmbh | Wischblatt, insbesondere für ein Kraftfahrzeug |
-
2021
- 2021-11-16 DE DE102021212878.5A patent/DE102021212878A1/de active Pending
-
2022
- 2022-11-15 CN CN202280076132.5A patent/CN118317897A/zh active Pending
- 2022-11-15 WO PCT/EP2022/081901 patent/WO2023088867A1/de not_active Ceased
- 2022-11-15 EP EP22803337.9A patent/EP4433336A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE102021212878A1 (de) | 2023-05-17 |
| WO2023088867A1 (de) | 2023-05-25 |
| CN118317897A (zh) | 2024-07-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20240617 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR |
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| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
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| 17Q | First examination report despatched |
Effective date: 20260105 |