WO2023052586A1 - Wischblatt - Google Patents
Wischblatt Download PDFInfo
- Publication number
- WO2023052586A1 WO2023052586A1 PCT/EP2022/077289 EP2022077289W WO2023052586A1 WO 2023052586 A1 WO2023052586 A1 WO 2023052586A1 EP 2022077289 W EP2022077289 W EP 2022077289W WO 2023052586 A1 WO2023052586 A1 WO 2023052586A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wiper
- guide surface
- wiper blade
- fastening
- wiper arm
- Prior art date
Links
- 230000008878 coupling Effects 0.000 claims abstract description 18
- 238000010168 coupling process Methods 0.000 claims abstract description 18
- 238000005859 coupling reaction Methods 0.000 claims abstract description 18
- 230000007704 transition Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- B60S1/40—Connections between blades and arms
- B60S1/4038—Connections between blades and arms for arms provided with a channel-shaped end
- B60S1/4045—Connections between blades and arms for arms provided with a channel-shaped end comprising a detachable intermediate element mounted on the channel-shaped end
- B60S1/4048—Connections between blades and arms for arms provided with a channel-shaped end comprising a detachable intermediate element mounted on the channel-shaped end the element being provided with retention means co-operating with the channel-shaped end of the arm
-
- 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
- B60S1/40—Connections between blades and arms
- B60S1/42—Connections between blades and arms resilient
-
- 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
- B60S1/40—Connections between blades and arms
- B60S1/4038—Connections between blades and arms for arms provided with a channel-shaped end
- B60S1/4045—Connections between blades and arms for arms provided with a channel-shaped end comprising a detachable intermediate element mounted on the channel-shaped end
- B60S1/4048—Connections between blades and arms for arms provided with a channel-shaped end comprising a detachable intermediate element mounted on the channel-shaped end the element being provided with retention means co-operating with the channel-shaped end of the arm
- B60S2001/4054—Connections between blades and arms for arms provided with a channel-shaped end comprising a detachable intermediate element mounted on the channel-shaped end the element being provided with retention means co-operating with the channel-shaped end of the arm the intermediate element engaging the back part of the arm
Definitions
- the invention relates to a wiper blade, in particular for a motor vehicle, and a windshield wiper arrangement according to the category of the independent claims.
- wiper blades which have a wiper strip and a fastening element for fastening the wiper strip to a wiper arm.
- several fastening elements are included in the sales packaging so that the fastening element suitable for the respective wiper arm can be selected and attached to the wiper strip. This is cumbersome and error-prone during assembly.
- fastening elements for hook-shaped ends of wiper arms are known, for example from DE 199 41 499 A1, which have flexible tabs to achieve an auto-adaptive characteristic.
- the wiper blade according to the invention with the features of the main claim has the advantage that a robust fastening element is represented by a fastening element with at least one movable wall between two parallel end positions, which ensures a secure hold of the wiper strip on the wiper arm.
- the measures listed in the subclaims result in further advantageous developments and improvements of the features specified in the main claim.
- a fastening element is to be understood in particular as an adapter element which has a contact area with the wiper blade or with a wiper blade component and can be connected to the wiper blade or the wiper blade component, advantageously can be connected firmly, in particular can be connected in such a way that the wiper blade is in the connected state with the fastening element is largely not displaceable relative to the fastener.
- the wiper blade advantageously has an adapter part which is provided for coupling to the fastening element.
- the fastening element is advantageously designed in one piece.
- one-piece is to be understood in particular as being materially bonded, for example by a welding process and/or an adhesive process etc. and particularly advantageously molded, for example by being produced from a single cast and/or by being produced in a one-component or multi-component injection molding process.
- a windshield wiper arrangement is particularly advantageous in which the wiper arm can be slid onto the fastening element, in particular along the direction of the wiper arm and/or largely along the direction of the wiper arm. This enables a reliable connection with a low overall height. Good aerodynamic properties of the windshield wiper arrangement can be ensured in this way.
- Designed to be slidable largely along the direction of the wiper arm is to be understood as being slidable along a sliding direction, with the sliding direction forming an angle with the direction of the wiper arm which deviates from 0° by no more than 8°, advantageously no more than 5°, particularly advantageously no more than 2° .
- a windshield wiper arrangement in which the wiper arm is designed to be pushed onto the base element, is designed in such a way that Fastening element has a first and a second guide surface for guiding the wiper arm, wherein the wiper arm is largely immovable perpendicular to a sliding direction relative to the fastening element when it is pushed onto the fastening element via the guide surfaces.
- a guide surface can be understood as an outer housing wall of the fastening element, which is designed to guide the wiper arm, in particular the fastening section, in the assembled state and thus restrict at least the movement of the wiper arm by at least one degree of freedom.
- the guide surface preferably forms an active surface pair with the wiper arm.
- the wiper arm is preferably in contact with the guide surface with the fastening section.
- the respective surface normals preferably extend essentially transversely to the longitudinal direction.
- the guide surfaces are preferably arranged essentially parallel to one another in the unassembled state.
- the guide surfaces preferably extend essentially in the longitudinal direction.
- a longitudinal direction should preferably be understood to mean a direction which is arranged in the direction of a greatest longitudinal extension of the wiper blade.
- Transverse is to be understood as meaning that a first axis forms an angle with a second axis which deviates from 90° by no more than 8°, advantageously no more than 5°, particularly advantageously no more than 2°.
- Parallel should be understood to mean that a first axis forms an angle with a second axis which deviates from 0° by no more than 8°, advantageously no more than 5°, particularly advantageously no more than 2°.
- the fastening element has at least one locking spring on a top surface and the wiper arm has a correlating opening, the locking spring being positively fitted into the Opening is formed insertable.
- the detent spring covers less than one-third of the top surface of the fastener.
- a longitudinal direction is to be understood as meaning a direction which is arranged in the direction of a greatest longitudinal extension of the wiper blade.
- Transverse is to be understood as meaning that a first axis forms an angle with a second axis which deviates from 90° by no more than 8°, advantageously no more than 5°, particularly advantageously no more than 2°.
- Parallel should be understood to mean that a first axis forms an angle with a second axis which deviates from 0° by no more than 8°, advantageously no more than 5°, particularly advantageously no more than 2°.
- FIG. 1 shows a windscreen wiper arrangement
- FIG. 2 shows a perspective view of an adapter element according to the invention
- FIG. 1 shows a detail of a perspective view of a windshield wiper arrangement 10.
- the windshield wiper arrangement 10 has a wiper arm 12 and a wiper blade 14 which can be connected to the wiper arm 12.
- the wiper blade 14 has a wiper strip 18 .
- the wiper strip 18 can be pressed against a windshield of the vehicle and used to clean the windshield.
- the wiper arm 12 is connected to the wiper blade 14 via a fastening element 16 .
- the fastening element 16 has a first adapter element 120 and one and a second adapter element 121 .
- the end of the wiper arm 12 can be pushed over the first adapter element 120 and locked on it.
- the first adapter element 120 has a locking spring 20 for this purpose.
- the wiper arm 12 can be pushed over the first adapter element 120 and locked by means of the locking spring 20 .
- the wiper arm 12 is hollow at least at the end, so that the first adapter element 120 can protrude into an interior space 22 of the wiper arm 12 .
- the wiper arm 12 preferably has a fastening section 24 .
- the fastening section 24 of the wiper arm 12 preferably has at least one opening 26 into which the locking spring 20 can protrude when the wiper arm 12 is in a connected state.
- the wiper arm 12 can usually only be released after the locking spring 20 has been actuated or the locking spring 20 has been pressed through the at least one opening 26 .
- the wiper arm 12 can preferably be inserted and locked on the first adapter element 120 in a wiper arm assembly position. In a wiper arm mounting position, the fastening element 16 is arranged at a wiper arm mounting angle of, for example, 30°-45° to the wiper blade.
- the wiper arm 12 can preferably be made of a metallic Material exist and have a rectangular cross-section, for example.
- the wiper strip 18 is preferably made from an elastic material and is used to clean windshields.
- the first adapter element 120 is attached to the wiper strip 18 so that it can pivot.
- the wiper strip 18 has the second adapter element 121, on which the first adapter element 120 is rotatably mounted.
- the first adapter part 120 can have a joint element, in particular a joint bolt, which, together with a joint element of the second adapter element 121, can form a pair of active surfaces, in particular a guide means each having a first guide surface and a second guide surface.
- the first adapter element 120 and the second adapter element 121 can also be mechanically connected to one another without a rotational connection.
- a direction of longitudinal extent L of the first adapter element 120 is arranged parallel to a direction of longitudinal extent L of a wiper arm 12 .
- a longitudinal direction L of the wiper strip 18 is arranged essentially parallel to the wiper arm 12, in particular to the fastening section 24.
- the direction of longitudinal extent L of the wiper blade 14 is arranged at least largely parallel to the wiper arm 12 .
- the attachment section 24 of the wiper arm 12 has a substantially U-shaped contour with a top surface 26, a first side wall 28 and a second side wall 30.
- the first side wall 28 and the second side wall 30 are preferably substantially arranged parallel to each other.
- the sidewalls 28, 30 are each flat, thin-walled, substantially planar, in particular projection-free walls.
- the top surface 26 preferably extends substantially perpendicularly to the side walls 28, 30.
- the contour of the attachment section 24 of the wiper arm 12 is preferably dimensioned such that the attachment section 24 with the respective side walls 28, 30 and the top surface 26 rests flat on the first adapter element 120 .
- the attachment section 24 of the wiper arm 12 has a free end 34 which, in the assembled state, can bear against a longitudinal stop 36 of the first adapter element 120 .
- the first adapter element 120 is essentially box-shaped and has a base body 200 and two guide surfaces 140 , 142 .
- the first guide surface 140 and the second guide surface 142 are preferably arranged essentially parallel to one another and preferably each extend essentially in the longitudinal direction L.
- the first guide surface 140 and the second guide surface 142 are preferably arranged on opposite outer sides of the first adapter element 120.
- Guide surfaces 140, 142 are preferably arranged essentially parallel to side walls 28, 30. In a final assembly position, guide surfaces 140, 142 each lie essentially at least partially, preferably completely, against side walls 28, 30 of wiper arm 12.
- the first guide surface 140 is designed as a substantially fixed positioning element.
- the positioning element has no mobility relative to the main body 200 of the first adapter element 120 .
- the second guide surface 142 is arranged on the opposite housing side of the first adapter element 120 of the fastening element 16 and is designed as an elastic coupling element.
- the coupling element 140 is opposite to that Base body 200 of the first adapter element 120 of the fastening element 16 is designed to be displaceable parallel and transversely to the longitudinal direction L. With a corresponding force acting on the coupling element, it can be displaced from a rest position both in the longitudinal direction L and in the transverse direction Q with respect to the base body 200 .
- FIG. 2 shows an enlarged view of the first adapter element 120 of the fastening element 16 from below, ie from the direction of the wiper strip 18.
- the first adapter element 120 has an essentially rectangular base body 200.
- the base body 200 is pointed at a first end 201 essentially in the shape of an arrow.
- the first adapter element 120 has two opposing inner walls 320, 322 which, in the assembled state, lie flat against the second adapter element 121, in particular against corresponding outer surfaces of the second adapter element 121.
- the first adapter element 120 has a second end 202 on which the longitudinal stop 36 is arranged.
- the inner walls 320, 322 are connected to one another on the side facing away from the wiper strip 18 via an essentially flat cover element 40.
- the inner walls 320, 322 and the cover element 40 form the essentially egg-shaped base body 200 of the first adapter element 120 of the fastening element 16.
- the locking spring 20 is arranged in the area of the first end 201.
- the Locking spring 20 is preferably designed as a cantilevered tab.
- the locking spring 20 is preferably connected to the distal end of the first adapter element 120 of the fastening element 16 .
- the first adapter element 120 has guide surfaces 140, 142 on its respective outer side surfaces.
- the first guide surface 140 is designed as a fixed positioning element 141 .
- the positioning element 141 is designed as a housing wall of the base body 200.
- the positioning element 141 has a relatively thick housing wall 150, so that the positioning element 141 provides a stop element which is substantially solid in the transverse direction during assembly.
- the first guide surface 140 or the positioning element 141 extends essentially in the longitudinal direction L.
- the transition 151 between the positioning element 141 and the insertion bevel of the free end 201 is preferably of essentially rounded design.
- the first adapter element 120 has a second guide surface 142 .
- the second guide surface 142 is designed as an elastic coupling element 143 .
- the elastic coupling element 143 is designed in such a way that it can be displaced in the longitudinal direction L and transversely to the longitudinal direction L. Due to the displaceability of the second guide surface 142, a distance 300a, 300b, 300c between the positioning element 141, in particular the outer housing wall of the positioning element 141 and the outer surface of the coupling element 143 is adjustable.
- the elastic coupling element 143 has at least one spring element 310, 312 so that the elastic coupling element 143 can be configured to be displaceable in the longitudinal direction L and transversely to the longitudinal direction in the transverse direction Q.
- the coupling element 143 has a first spring element 310 and a second spring element 312 and a side wall 315 .
- the spring elements 310, 312 are preferably designed in the form of waves.
- the spring elements 310, 312 are preferably mechanically coupled to the base body 200.
- the spring elements 310, 312 are preferably designed as wave-shaped spring arms.
- the spring elements 310, 312 preferably describe a sinusoidal contour.
- the wave-shaped spring elements 310, 312 preferably each have two wave troughs 320 and two wave crests 322.
- a preferred embodiment of the invention provides that the spring elements 310, 312 have at least three turning points.
- the spring elements 310, 312 are preferably designed as filigree, thin-walled elements.
- the spring elements 310, 312 are arranged at a distance from one another in the longitudinal direction L.
- the first spring element 310 is the element facing the free end 201 .
- the spring elements 310, 312 each have a main extension direction 314, 316.
- FIG. 2 shows the first adapter element 120 in a rest position, ie before it is mounted on a wiper arm 12.
- the spring elements 310, 312 are compressed in the direction of main extension 314, 316.
- the spring elements 310, 312 are connected both to the base body 200 and to the side wall 315.
- the spring elements 310, 312 each have a first connection section 400 at the transition to the base body 200 and a second connection section 402 at the transition to the side wall 315.
- the Side wall 315 is formed as a substantially planar, longitudinally extending member.
- the connection sections 400, 401 are preferably each formed essentially without any jumps, at least in part.
- the main extension direction 314 of the first spring element 310 encloses a first spring angle a with the longitudinal direction L.
- the main extension directions 316 of the second spring element 312 enclose a second spring angle ⁇ with the longitudinal direction L.
- the spring angle is in the range between 20° and 40°, preferably between 25° and 35°, particularly preferably approximately 30°. A particularly preferred one
- Embodiment provides that the first spring angle a is smaller than the second spring angle ß.
- the first adapter element 120 is shown in FIG. 2 in a rest position, ie before the wiper arm 12 is pushed over the adapter element 120.
- the adapter element 120 is now designed in such a way that it is suitable for this
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Plates (AREA)
- Pivots And Pivotal Connections (AREA)
- Transmission Devices (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP22782898.5A EP4408709A1 (de) | 2021-09-30 | 2022-09-30 | Wischblatt |
CN202280066452.2A CN118043237A (zh) | 2021-09-30 | 2022-09-30 | 刮水片 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102021211023.1 | 2021-09-30 | ||
DE102021211023.1A DE102021211023A1 (de) | 2021-09-30 | 2021-09-30 | Wischblatt |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023052586A1 true WO2023052586A1 (de) | 2023-04-06 |
Family
ID=83508565
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2022/077289 WO2023052586A1 (de) | 2021-09-30 | 2022-09-30 | Wischblatt |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP4408709A1 (de) |
CN (1) | CN118043237A (de) |
DE (1) | DE102021211023A1 (de) |
WO (1) | WO2023052586A1 (de) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19941499A1 (de) | 1999-08-31 | 2001-04-05 | Bosch Gmbh Robert | Verbindungsstück zum Verbinden eines Wischblatts mit einem Wischerarm |
WO2006106006A1 (de) * | 2005-04-08 | 2006-10-12 | Robert Bosch Gmbh | Vorrichtung zum gelenkigen verbinden eines wischblatts mit einem wischarm eines scheibenwischers |
DE102011001688A1 (de) * | 2011-03-31 | 2012-10-04 | Valeo Systèmes d'Essuyage | Wischblatt und Wischvorrichtung zum Reinigen von Fahrzeugscheiben |
DE102020214770A1 (de) * | 2020-11-25 | 2022-05-25 | Robert Bosch Gesellschaft mit beschränkter Haftung | Wischblatt, insbesondere für ein Kraftfahrzeug |
-
2021
- 2021-09-30 DE DE102021211023.1A patent/DE102021211023A1/de active Pending
-
2022
- 2022-09-30 WO PCT/EP2022/077289 patent/WO2023052586A1/de active Application Filing
- 2022-09-30 EP EP22782898.5A patent/EP4408709A1/de active Pending
- 2022-09-30 CN CN202280066452.2A patent/CN118043237A/zh active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19941499A1 (de) | 1999-08-31 | 2001-04-05 | Bosch Gmbh Robert | Verbindungsstück zum Verbinden eines Wischblatts mit einem Wischerarm |
WO2006106006A1 (de) * | 2005-04-08 | 2006-10-12 | Robert Bosch Gmbh | Vorrichtung zum gelenkigen verbinden eines wischblatts mit einem wischarm eines scheibenwischers |
DE102011001688A1 (de) * | 2011-03-31 | 2012-10-04 | Valeo Systèmes d'Essuyage | Wischblatt und Wischvorrichtung zum Reinigen von Fahrzeugscheiben |
DE102020214770A1 (de) * | 2020-11-25 | 2022-05-25 | Robert Bosch Gesellschaft mit beschränkter Haftung | Wischblatt, insbesondere für ein Kraftfahrzeug |
Also Published As
Publication number | Publication date |
---|---|
CN118043237A (zh) | 2024-05-14 |
DE102021211023A1 (de) | 2023-03-30 |
EP4408709A1 (de) | 2024-08-07 |
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