CN115805899A - Wiper blade apparatus for window wiper and window wiper having the same - Google Patents

Wiper blade apparatus for window wiper and window wiper having the same Download PDF

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Publication number
CN115805899A
CN115805899A CN202211109925.0A CN202211109925A CN115805899A CN 115805899 A CN115805899 A CN 115805899A CN 202211109925 A CN202211109925 A CN 202211109925A CN 115805899 A CN115805899 A CN 115805899A
Authority
CN
China
Prior art keywords
spring rail
wiper
heating element
wiper blade
longitudinal extent
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
Application number
CN202211109925.0A
Other languages
Chinese (zh)
Inventor
A·范特里赫特
P·德布劳克
P·威勒肯斯
R·格林林克斯
S·沙里夫扎德
S·特鲁延斯
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of CN115805899A publication Critical patent/CN115805899A/en
Pending legal-status Critical Current

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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
    • B60S1/3803—Wiper blades heated wiper blades
    • B60S1/3805—Wiper blades heated wiper blades electrically
    • 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
    • B60S1/3848—Flat-type wiper blade, i.e. without harness
    • B60S1/3874—Flat-type wiper blade, i.e. without harness with a reinforcing vertebra
    • B60S1/3875—Flat-type wiper blade, i.e. without harness with a reinforcing vertebra rectangular section
    • B60S1/3879—Flat-type wiper blade, i.e. without harness with a reinforcing vertebra rectangular section placed in side grooves in the squeegee
    • 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
    • B60S1/3806—Means, or measures taken, for influencing the aerodynamic quality of the wiper blades
    • B60S1/381—Spoilers mounted on the squeegee or on the vertebra
    • 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
    • B60S1/3848—Flat-type wiper blade, i.e. without harness
    • B60S1/3874—Flat-type wiper blade, i.e. without harness with a reinforcing vertebra
    • B60S1/3875—Flat-type wiper blade, i.e. without harness with a reinforcing vertebra rectangular section
    • B60S1/3881—Flat-type wiper blade, i.e. without harness with a reinforcing vertebra rectangular section in additional element, e.g. spoiler
    • 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
    • B60S1/46—Cleaning windscreens, windows or optical devices using liquid; Windscreen washers
    • B60S1/48—Liquid supply therefor
    • B60S1/52—Arrangement of nozzles; Liquid spreading means
    • B60S1/522—Arrangement of nozzles; Liquid spreading means moving liquid spreading means, e.g. arranged in wiper arms
    • B60S1/524—Arrangement of nozzles; Liquid spreading means moving liquid spreading means, e.g. arranged in wiper arms arranged in 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Surface Heating Bodies (AREA)
  • Ink Jet (AREA)

Abstract

The invention relates to a wiper blade device for a windscreen wiper, comprising at least one heating unit for heating a wiper strip of the windscreen wiper and comprising at least one spring rail, which is formed along at least a substantial part of the main longitudinal extent of the spring rail by two spring rail parts that are spaced apart from one another, wherein the heating unit comprises at least one heating element, wherein the heating element comprises at least one intermediate region along the main longitudinal extent of the spring rail, in which the heating element extends, in particular when viewed along the main longitudinal extent of the spring rail in the assembled state, from one of the two spring rail parts to the other of the two spring rail parts. It is proposed that the intermediate region extends over at least a substantial part of the main longitudinal extent of the spring rail.

Description

Wiper blade apparatus for window wiper and window wiper having the same
Technical Field
A wiper blade device for a window wiper has already been proposed, which has at least one heating unit for warming a wiper strip of the window wiper and has at least one spring rail which is constructed with two spring rail parts spaced apart from one another along at least a substantial part of the main longitudinal extent of the spring rail, wherein the heating unit comprises at least one heating element, wherein the heating element comprises at least one intermediate region along the main longitudinal extent of the spring rail, in which the heating element extends, in particular as viewed along the main longitudinal extent of the spring rail in the assembled state, from one of the two spring rail parts to the other of the two spring rail parts.
Disclosure of Invention
The invention relates to a wiper blade device for a windscreen wiper, comprising at least one heating unit for warming a wiper strip of the windscreen wiper and comprising at least one spring rail, which is formed along at least a substantial part of the main longitudinal extent of the spring rail by two spring rail parts that are spaced apart from one another, wherein the heating unit comprises at least one heating element, wherein the heating element comprises at least one intermediate region along the main longitudinal extent of the spring rail, in which the heating element extends, in particular when viewed along the main longitudinal extent of the spring rail in the assembled state, from one of the two spring rail parts to the other of the two spring rail parts.
It is proposed that the intermediate region extends over at least a substantial part of the main longitudinal extent of the spring rail. Preferably, the heating element is formed by a middle region and two side regions. In particular, the two side regions are each arranged at the sides of the middle region facing away from one another. Preferably, the two side regions each extend at least substantially completely within the range of the greatest longitudinal extension of the heating element. Preferably, the middle region and the side regions are arranged alongside one another at least substantially perpendicularly to the maximum longitudinal extension of the heating element. "substantially perpendicularly" is to be understood to mean, in particular, the orientation of a straight line, a plane or a direction, in particular of an imaginary straight line, which explains the sequence of arrangement of the central region and the lateral regions, relative to a further straight line, a further plane or a reference direction, in particular a straight line which encompasses the greatest longitudinal extension of the heating element, wherein the straight line, the plane or the direction and the further straight line, the further plane or the reference direction, in particular, as viewed in the projection plane, span an angle of 90 °, which has a maximum deviation of less than 8 °, preferably less than 5 °, and particularly preferably less than 2 °. In particular, the middle region and the two side regions are arranged alongside one another, viewed along the maximum longitudinal extension of the heating element. In particular, the two lateral regions are each arranged directly at the central region and are connected to one another in particular via the central region. It is conceivable that the heating element comprises a plurality of intermediate regions which are arranged one behind the other, in particular along the maximum longitudinal extension of the heating element. In particular, these intermediate regions together extend over at least a large part of the main longitudinal extent of the spring rail, in particular at least substantially completely over the main longitudinal extent of the spring rail and/or of the heating element.
The wiper blade device is preferably designed as a component of a wiper blade of a windshield wiper. The heating elements are preferably arranged in each case via two lateral regions on the spring rails, in particular on the spring rail parts. The spring rail, in particular the spring rail part, is preferably provided for holding and/or fixing the wiper strip, in particular over an at least substantially complete main longitudinal extent of the spring rail. In particular, the spring rail is provided for at least partially surrounding and/or clamping the wiper strip. "provided" is to be understood in particular as specially designed and/or specially equipped. The term "function that the object is provided with for determining" is to be understood in particular to mean that the object fulfills and/or implements such a determined function in at least one application state and/or operating state. Preferably, the maximum main longitudinal extent of the spring rail extends at least substantially parallel to the main extension axis of the wiper blade, the maximum longitudinal extent of the heating element and/or the main longitudinal extent of the wiper strip, in particular in the assembled state of the wiper blade device. "substantially parallel" is to be understood in particular as meaning the orientation of a line, plane or direction, in particular a line which encloses the greatest main longitudinal extent of the spring rail, relative to a further line, a further plane or reference direction, in particular a main extension axis of the wiper blade, the greatest longitudinal extent of the heating element and/or a main longitudinal extent of the wiper strip, wherein the line, plane or direction has a deviation of less than 8 °, preferably less than 5 ° and particularly preferably less than 2 ° relative to the further line, the further plane or reference direction.
Preferably, the two spring rail parts are arranged at least substantially parallel to each other. In particular, the two spring rail parts are arranged alongside one another, viewed along the greatest main longitudinal extent of the spring rail. The two spring rail parts are preferably each of plate-like and/or strip-like design. In particular, the two spring rail parts have a common main plane of extension, in particular in the assembled state of the wiper blade device. The "main plane of extension" of the structural unit, in particular of the spring rail part, is to be understood in particular as a plane which is parallel to the largest side of the smallest imaginary cuboid which just completely surrounds the structural unit, and which extends in particular through the middle point of the cuboid. It is conceivable for the spring rail to be formed in two parts over the entire main longitudinal extent of the spring rail, in particular by two spring rail parts, or for the two spring rail parts to be connected to one another by at least one connecting point.
The heating element is preferably designed as a heating membrane or as a heating wire which is applied, in particular, in a planar manner. The heating element is preferably designed in such a way that the heating power is transmitted via the two lateral regions and via the central region. The heating element is preferably provided for fastening at the spring rail, in particular at the two spring rail parts, by means of two lateral regions, for example by means of an adhesive connection or the like. It is conceivable for the heating unit to comprise a plurality of heating elements, wherein in particular the intermediate regions of the heating elements together extend over at least a large part of the main longitudinal extent of the spring rail, in particular at least substantially completely over the main longitudinal extent of the spring rail and/or of the heating elements. In particular, the heating elements are provided for being arranged one after the other along the main longitudinal extension of the spring rail. Alternatively, it is conceivable for the heating element to be designed such that it heats only the intermediate region, for example in the connecting region for connection to the wiper blade adapter, at least partially.
Preferably, a wiper blade device is provided for connection to the wiper strip and to at least one wiper blade adapter of the windshield wiper. In particular, a wiper blade device is provided for fastening a wiper strip at a wiper blade adapter. Preferably, the wiper blade device, in particular the spring rail, is provided with at least one spoiler for retaining the wiper blade. It is conceivable that the spring rails, in particular the spring rail parts, each have at least one PET coating. Preferably, a heating unit, in particular at least one heating element, is provided for heating at least one fluid channel of the wiper blade, in particular at least one fluid channel defined by the spoiler and at least one fluid channel defined by the wiper blade adapter.
The design of the wiper blade device according to the invention makes it possible to achieve an advantageously robust heating element, in particular because the intermediate region is advantageously of large size. An advantageously rapid and reliable assembly of the wiper blade device and/or the wiper blade of the windshield wiper can be achieved, in particular because the heating element can be placed simultaneously on the two spring rail parts, advantageously over a large area. Advantageously low installation costs can be achieved. An advantageously simple stabilization of the wiper blade can be achieved, in particular because additional components for this purpose can be dispensed with. An advantageously uniform warming of the wiper blade can be achieved.
Furthermore, it is proposed that the heating element is provided for abutting, in particular in the assembled state, via the intermediate region against a wiper strip of the windshield wiper, in particular at a head portion of the wiper strip. An advantageously simple stabilization of the wiper strip fixed by the spring rail part can be achieved. It can advantageously be achieved that the spring rail parts are fixed relative to each other in the state arranged at the wiper strip. It is advantageously possible to counteract a relative movement of the lateral regions of the heating element arranged at the spring rail parts. This makes it possible to advantageously arrange the heating element stably as a component of the assembled wiper blade. The intermediate region is preferably arranged at a distance from the spring rail, in particular the spring rail part. In particular, the central region is offset from the lateral regions, in particular in the assembled state of the wiper blade device, perpendicular to the main plane of extension of the spring rails and/or of the heating element. In particular, the spring rails, in particular the spring rail parts, are provided for the wiper strip to extend at least partially, in particular through the head part of the wiper strip, between the two spring rail parts, in particular to the side of the spring rail on which the heating element is arranged. The heating element is preferably provided for planar abutment by the intermediate region at the wiper strip, in particular at the head portion of the wiper strip, preferably at least by a substantial portion of the inner surface of the heating element forming the intermediate region. In particular, the inner surface of the heating element is arranged at the side of the heating element facing the spring rail and/or the wiper strip.
It is furthermore proposed that the wiper blade device comprises at least one connecting region for connection to a wiper blade adapter of a windshield wiper, wherein the central region of the heating element extends along the main longitudinal extent of the spring rail at least substantially completely within the range of the greatest length of the connecting region. Advantageously, a simultaneous warming of the fluid channels of the wiper strip and of the wiper blade adapter can be achieved. Preferably, the wiper blade device is provided for fastening to a wiper blade adapter via a connecting region, wherein in particular the wiper blade adapter is connected to the spring rail via a clamping connection and/or a latching connection.
It is furthermore proposed that the intermediate region extends at least substantially completely over the maximum longitudinal extent of the heating element, in particular along the main longitudinal extent of the spring rail. Undesired weak points of the heating element along the main longitudinal extension of the spring rail can advantageously be prevented. This advantageously prevents undesirable damage to the heating element during operation of the windshield wiper. An advantageously uniform warming of the wiper strip can be achieved over the entire length of the wiper blade. "substantially completely" is to be understood to mean, in particular, a portion of the body, which portion extends over the maximum longitudinal extension of the heating element, which portion is dependent on the properties of the body, the function of the body and/or the action performed by the body, wherein the portion is at least 95%, preferably at least 98% and particularly preferably at least 99% of the entire body. It is conceivable for the intermediate region to extend at least substantially completely within the range of the greatest longitudinal extent of the spring rail, preferably excluding an end region of the spring rail, which is provided in particular for fastening an end cap of the wiper blade.
Furthermore, it is proposed that the heating element be provided for directly warming the spring rail part and, via the intermediate region, the wiper strip of the windshield wiper, in particular the head section of the wiper strip. Advantageously, a uniform warming of the wiper blade, in particular of the spring rails and of the wiper strip, can be achieved. An advantageously simple design of the heating element can be achieved, in particular because the heating element can be identically constructed over at least substantially the entire surface. Preferably, the heating element is provided for transferring heat at least through the part of the intermediate region that is to be placed against the wiper strip, in particular at the head part of the wiper strip. In particular, the heating element is provided for transferring heat to the spring rail part via the lateral region. In particular, it is preferred that the at least one heating element forms at least one line path which extends at least partially into or through the intermediate region. In particular, the heating element is provided for generating heat by means of a voltage applied to at least one line path. In particular, the density of the pipe path within the side regions of the heating element at least substantially corresponds to the density of the pipe path within the middle region of the heating element. Alternatively or additionally, it is conceivable for the line path to extend at regular intervals along the maximum longitudinal extent of the heating element through the middle region, in particular from one of the side regions to the other of the side regions.
It is furthermore proposed that the heating element is provided for at least partially, in particular at least largely, surrounding, in particular clamping, a wiper strip, in particular a head portion of the wiper strip, of the windshield wiper, in particular via the intermediate region, together with the spring rail, in particular as viewed along the main longitudinal extent of the spring rail. An advantageously stable fastening of the wiper strip can be achieved, in particular by the spring rail together with the heating element. An advantageously direct heat transfer to the spring rail part and the wiper strip can be achieved. In particular, the heating element is provided for at least partially, in particular at least predominantly, surrounding a wiper strip of a windshield wiper, in particular a head portion of the wiper strip, as viewed along the main longitudinal extent of the spring rail, together with the spring rail, via an intermediate region. In particular, the heating element is provided for clamping a wiper strip of a windshield wiper, in particular a head portion of the wiper strip, together with the spring rail via the intermediate region. The spring rail preferably forms at least one receiving recess for the wiper strip, in particular the head portion of the wiper strip, between the two spring rail parts. In particular, the spring rail, in particular the spring rail part, is provided for the form-fitting reception of the wiper strip by the reception recess, wherein in particular the head part of the wiper strip rests at least for the most part on the spring rail, in particular on the spring rail part, on the side of the spring rail facing the heating element. Preferably, the intermediate region, in particular in the assembled state of the wiper blade device, as viewed along the main longitudinal extent of the spring rail, extends completely beyond the maximum transverse extent of the receiving recess. Preferably, the intermediate region extends, in particular in the assembled state of the wiper blade device, at least partially within the range of the greatest transverse extent of the two spring rail parts, as viewed along the main longitudinal extent of the spring rail. The two spring rail parts and the heating element are preferably designed such that, in particular in the assembled state of the wiper blade device, the head portion of the wiper strip extends, as viewed along the main longitudinal extent of the spring rail, at least partially in the region of the maximum transverse extent of the two spring rail parts, starting from the receiving recess. In particular, the two spring rail parts and the heating element are configured such that a portion of the head portion of the wiper strip, which portion extends over a maximum transverse extent of the two spring rail parts, is arranged, in particular clamped, between the spring rail parts and an intermediate region of the heating element, in particular as viewed along a main longitudinal extent of the spring rail, in particular in the assembled state of the wiper blade device. In particular, the spring rails, in particular the spring rail parts, are provided for the flat abutment of the head portions of the wiper strip against the outer surfaces of the two spring rail parts facing the heating element.
Furthermore, a windshield wiper having at least one wiper strip and having at least one wiper blade device according to the invention is proposed. Preferably the windscreen wiper comprises a wiper blade. In particular, the wiper blade device is configured as a component of a wiper blade. Preferably, the wiper blade comprises a wiper blade adapter, which is provided in particular for fastening the wiper blade to a wiper arm of a windshield wiper. Preferably, the wiper blade comprises at least one, in particular two, end caps, which are each provided for fastening at one of the two end regions of the spring rail. In particular, the end cap is provided for blocking a relative movement of the spring rail, the deflecting spoiler and/or the wiper strip in a direction oriented at least substantially parallel to a main longitudinal extent of the spring rail and/or the wiper strip.
By means of the configuration according to the invention of the windshield wiper, an advantageously robust construction of the wiper blade in particular can be achieved. An advantageously rapid and reliable mounting of the wiper blade can be achieved, in particular because the heating element can be placed simultaneously on both spring rail parts, advantageously over a large area. Advantageously low installation costs can be achieved. An advantageously simple stabilization of the wiper blade can be achieved, in particular because additional components for this purpose can be dispensed with. An advantageously uniform warming of the wiper blade can be achieved.
The wiper blade device according to the invention and/or the windshield wiper according to the invention should not be limited to the embodiments and embodiments described above. In particular, the wiper blade device according to the invention and/or the windshield wiper according to the invention can have a number which differs from the number mentioned in this respect of the individual elements, components and units in order to satisfy the functional manner explained in this respect. Also with respect to the value ranges specified in this disclosure, values within the mentioned limits should also be considered disclosed and can be used at will.
Drawings
Further advantages are obtained from the following description of the figures. Embodiments of the invention are shown in the drawings. The figures, description and claims include a number of combined features. The skilled person will also consider these features individually and combine them in meaningful further combinations in a suitable manner.
In the figure:
figure 1 shows a schematic view of a windscreen wiper device according to the invention with a wiper blade device according to the invention,
figure 2 shows a schematic view of a wiper blade of a windscreen wiper according to the invention with a wiper blade device according to the invention,
fig. 3 shows a schematic view of a window wiper according to the invention having a wiper blade device according to the invention in the end region of the wiper blade, and
fig. 4 shows a schematic cross-sectional view of a wiper blade of a windshield wiper according to the invention with a wiper blade device according to the invention.
Detailed Description
A window wiper 10 for use with a vehicle is schematically illustrated in fig. 1. The windshield wiper 10 includes a wiper blade 12 and a wiper arm 14. The wiper arm 14 comprises a wiper arm adapter 16 for fastening to a wiper blade adapter 18 of the wiper blade 12. The wiper blade 12 is shown separately in fig. 2. In particular, the wiper arm 14 and the wiper blade 12 are releasably fastened to one another by means of a wiper arm adapter 16 and a wiper blade adapter 18. The windshield wiper 10 includes a wiper blade device 20, which is in particular embodied as a component of a wiper blade 12.
The wiper blade 12 furthermore comprises a wiping medium outlet unit which comprises two fluid channels 22. The fluid channels 22 each extend at least for the most part over the largest longitudinal extent 24 of the wiper blade 12 (see fig. 2), in particular within a spoiler 26 of the wiper blade (see fig. 4). The fluid channels 22 are each connected to a hose 28 via the wiper blade adapter 18, wherein the hose 28 extends along the wiper arm 14 from the wiper arm adapter 16 along the wiper shaft of the wiper arm 14 to a connection point 30 of the windscreen wiper 10 for connection to an external fluid reservoir. The wiper blade 12 includes a wiper strip 32, a spoiler 26 and two end caps 34. However, other embodiments of the windshield wiper 10 with the wiper blade device 20, in particular of the wiper blade 12 and/or of the wiper arm 14, are also conceivable. The wiper blade device 20 comprises a connecting region 36 for connection to a wiper blade adapter 18 of a windshield wiper 10, in particular of a wiper blade 12 (see fig. 2). The connecting region 36 has a maximum length 54 (see fig. 2) which extends, in particular, at least substantially parallel to a main extension axis 56 of the wiper blade 12 and/or of the wiper blade device 20. The wiper blade 12 includes a spring rail 38. The spring rail 38 has a maximum main longitudinal extent 40 which extends at least substantially parallel to the maximum longitudinal extent 24 of the wiper blade 12 and/or to a main extension axis 56 of the wiper blade 12. The spring rail 38 extends at least substantially completely within the region of the maximum longitudinal extension 24 of the wiper blade 12. The spring rail 38 is configured as a component of the wiper blade device 20. The end caps 34 are arranged in end regions 42 of the wiper blade 12 and/or of the spring rails 38, respectively.
In fig. 3, a schematic detail view of the wiper blade 12 is shown in one of the end regions 42 of the wiper blade 12 and/or of the spring rail 38, wherein in particular the spoiler 26 and the end cap 34 are not shown for the sake of clarity. The wiper blade device 20 comprises a heating unit 44 for warming up the wiper strip 32 of the window wiper 10/wiper blade 12. The heating unit 44 comprises a heating element 46 configured to heat the membrane, which is arranged at the spring rail 38. Other embodiments of the heating unit 44, in particular of the heating element 46, are also conceivable, for example different embodiments of the heating membrane having more than one heating element 46 and/or having heating elements 46, for example in particular as heating wires or the like. The spring rail 38 forms, along at least a substantial part of the main longitudinal extent 40 of the spring rail 38, two spring rail parts 48 spaced apart from one another. The heating element 46 comprises an intermediate region 50 along the main longitudinal extent 40 of the spring rail 38, in which the heating element 46 extends, in particular in the assembled state shown in fig. 3, from one of the two spring rail parts 50 to the other of the two spring rail parts 50, viewed along the main longitudinal extent 40 of the spring rail 38 (see also fig. 4). The heating element 46 has two lateral regions 52, by means of which the heating element 46 is arranged at the two spring rail parts 48. The heating element 46 is preferably constructed from a middle region 50 and two side regions 52. The heating element 46 is connected to the spring rail 38, in particular to the two spring rail parts 48, in particular by two lateral regions 52 by means of an adhesive connection. The heating element 46 is fastened to the spring rail 38, in particular to the two spring rail parts 48, in particular by means of the two lateral regions 52. The middle region 50 of the heating element 46 extends from the end region 42 of the spring rail 38 provided for fastening one of the end caps 34 along the main longitudinal extent 40 of the spring rail 38 to the other end region 42 of the spring rail 38 provided for fastening one of the end caps 34. The central region 50 of the heating element 46 extends over a large part of the main longitudinal extent 40 of the spring rail 38 (see fig. 2). The intermediate region 50 extends at least substantially completely along the main longitudinal extent 40 of the spring rail 38 in the region of a maximum longitudinal extent 68 of the heating element 46, which is oriented, in particular, at least substantially parallel to the main longitudinal extent 40 of the spring rail 38 (see fig. 2). The intermediate region 50 of the heating element 46 extends at least substantially completely along the main longitudinal extent 40 of the spring rail 38 in the region of a maximum length 54 of the connecting region 36 (see fig. 2).
The spring rail 38, in particular the two spring rail parts 48, is provided for fixing the wiper strip 32, preferably by clamping the head portion 58 of the wiper strip 32 between the two spring rail parts 48. The head portion 58 of the wiper strip 32 is formed at the end of the wiper strip 32 facing away from a wiper lip 60 of the wiper strip 32. The heating element 46 extends at least for the most part, in particular at least substantially completely, within the range of the maximum transverse extent 62 of the spring rail 38. The heating element 46 extends parallel to the maximum transverse extent 62 of the spring rail 38 completely over a receiving recess 64 of the spring rail 38, which is formed in particular between the two spring rail parts 50. The spring rail 38, in particular the two spring rail parts 50, is provided for receiving the wiper strip 32, in particular the head portion 58 of the wiper strip 32, at least partially through the receiving recess 64 (see also fig. 4). The two spring rail members 48 are spaced from one another by receiving notches 64. The receiving recess 64 extends within the range of the greatest main longitudinal extent 40 of the spring rail 38. Alternatively, it is conceivable for the spring rail parts 48 to be connected to one another at least one connection point and to be of one-piece design in particular. The spring rail 38, in particular the two spring rail parts 50, in particular each define a fastening recess 66 in the end region 42 for fastening the end cap 34. The heating element 46 is preferably designed and/or arranged at the spring rail 38 in such a way that the fastening recess 66 is freely designed, in particular not obscured by the heating element 46.
The heating element 46 is formed in the central region 50 at a distance from the spring rail 38, in particular the two spring rail parts 48 (see also fig. 4). The heating element 46 is offset in the middle region 50 at least substantially perpendicularly to the maximum transverse extent 62 of the spring rail 38 and at least substantially perpendicularly to the maximum longitudinal extent 68 of the heating element 46 and/or the maximum main longitudinal extent 40 of the spring rail 38 from the two side regions 52 and/or the two spring rail parts 48. The heating element 46 has in particular a rectangular basic shape. The heating element 46 is preferably designed without gaps over at least a substantial part of the maximum longitudinal extent 68 of the heating element 46, in particular over the maximum longitudinal extent 68 of the heating element 46.
Fig. 4 shows a sectional view of the wiper blade 12, in particular in a region spaced apart from a connecting region 36 of the wiper blade device 20 and an end region 42 of the wiper blade 12. In fig. 4, the wiper blade 12 or the wiper blade device 20 is shown along a main longitudinal extent 40 of the spring rail 38 (see fig. 3). The spoiler 26 defines the two fluid passages 22 of the wiper blade 12. In particular, the fluid channels 22 are each arranged on one of the two spring rail parts 48 and on one of the two lateral regions 52 of the heating element 46. The heating element 46 is provided for abutting against the head portion 58 of the wiper strip 32 via the intermediate region 50. The heating element 46 rests in a planar manner on the two spring rail parts 48 by means of the two lateral regions 52. The heating element 46 rests with two side regions 52 preferably flat against the inner surface of the deflector spoiler 26. The heating element 46 is provided to warm the spring rail part 48 and, via the intermediate region 52, the wiper strip 32 of the window wiper 10, in particular the head portion 58 of the wiper strip 32, directly. The heating element 46 rests in a largely planar manner on the head part 58 of the wiper strip 32 via the central region 52. The two spring rail parts 48 are arranged at least substantially parallel to each other. The two spring rail parts 48 have a common main plane of extension 70.
The heating element 46 is provided for at least largely surrounding the head portion 58 of the wiper strip 32, as viewed in particular along the main longitudinal extent 40 of the spring rail 38, together with the spring rail 38, via the intermediate region 50 of the heating element 34. The heating element 46 is provided for clamping the head portion 58 of the wiper strip 32 together with the spring rail 38 via the central region 50 of the heating element 46. The spring rail 38, in particular the spring rail part 48, is provided for a form-fitting reception of the wiper strip 32 by means of the receiving recess 64, wherein in particular the head portion 58 of the wiper strip 32 rests at least for the most part at the spring rail 38, in particular at the spring rail part 48, on the side of the spring rail 38 facing the heating element 46. The intermediate region 50, viewed along the main longitudinal extent 40 of the spring rail 38, extends at least partially in the region of the greatest transverse extent 72 of the two spring rail parts 48. The two spring rail parts 48 and the heating element 46 are designed in such a way that the head portion 58 of the wiper strip 32, viewed along the main longitudinal extent 40 of the spring rail 38, extends, starting from the receiving recess 64, at least in sections in the region of the greatest transverse extent 72 of the two spring rail parts 48. The two spring rail parts 48 and the heating element 46 are designed such that the portion of the head portion 58 of the wiper strip 32 which extends over the maximum transverse extent 72 of the two spring rail parts 48 is arranged, in particular clamped, between the spring rail parts 48 and the intermediate region 50 of the heating element 46, in particular as viewed along the main longitudinal extent 40 of the spring rail 38, in the assembled state of the wiper blade device 20. The spring rail 38, in particular the spring rail parts 48, are provided for the flat abutment of the head portion 58 of the wiper strip 32 against the outer surfaces 76 of the two spring rail parts 48 facing the heating element 46.

Claims (7)

1. Wiper blade device (20) for a windscreen wiper (10), having at least one heating unit (44) for warming a wiper strip (32) of the windscreen wiper (10) and having at least one spring rail (38) which is configured along at least a majority of a main longitudinal extent (40) of the spring rail (38) with two spring rail parts (48) spaced apart from one another,
wherein the heating unit (44) comprises at least one heating element (46), wherein the heating element (46) comprises at least one intermediate region (50) along the main longitudinal extent (40) of the spring rail (38), in which intermediate region the heating element (46) extends, in particular as viewed along the main longitudinal extent (40) of the spring rail (38) in the assembled state, from one of the two spring rail parts (48) to the other of the two spring rail parts (48),
characterized in that the intermediate region (50) extends over at least a substantial part of the main longitudinal extent (40) of the spring rail (38).
2. Wiper blade device (20) according to claim 1, characterized in that the heating element (46) is provided for abutting, in particular in the assembled state, via the intermediate region (50) against a wiper strip (32) of the windshield wiper (10), in particular at a head portion (58) of the wiper strip (32).
3. Wiper blade device (20) according to claim 1 or 2, characterized by at least one connection region (36) for connection with a wiper blade adapter (18) of the windscreen wiper (10), wherein the intermediate region (50) of the heating element (46) extends along the main longitudinal extent (40) of the spring rail (38) at least substantially completely within the range of a maximum length (54) of the connection region (36).
4. Wiper blade device (20) according to any one of the preceding claims, characterized in that the intermediate region (50) extends at least substantially completely in the range of a maximum longitudinal extension (68) of the heating element (46), in particular along a main longitudinal extension (40) of the spring rail (38).
5. Wiper blade device (20) according to at least claim 2, characterized in that the heating element (46) is provided for directly warming the spring rail part (48) and via the intermediate region (50) a wiper strip (32) of the windscreen wiper (10), in particular a head portion (58) of the wiper strip (32).
6. Wiper blade device (20) according to at least claim 2, characterized in that the heating element (46) is provided for at least partially, in particular at least predominantly, surrounding, in particular clamping, a wiper strip (32), in particular a head portion (58) of the wiper strip (32) of the windshield wiper (10), in particular of the windshield wiper strip (32), together with the spring rail (38), in particular as viewed along the main longitudinal extent (40) of the spring rail (38), by means of the intermediate region (50).
7. Windscreen wiper (10) having at least one wiper strip (32) and having at least one wiper blade device (20) according to any one of the preceding claims.
CN202211109925.0A 2021-09-14 2022-09-13 Wiper blade apparatus for window wiper and window wiper having the same Pending CN115805899A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021210134.8A DE102021210134A1 (en) 2021-09-14 2021-09-14 Wiper blade device for a windscreen wiper and windscreen wiper with the wiper blade device
DE102021210134.8 2021-09-14

Publications (1)

Publication Number Publication Date
CN115805899A true CN115805899A (en) 2023-03-17

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ID=85284330

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211109925.0A Pending CN115805899A (en) 2021-09-14 2022-09-13 Wiper blade apparatus for window wiper and window wiper having the same

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Country Link
CN (1) CN115805899A (en)
DE (1) DE102021210134A1 (en)
FR (1) FR3126947A1 (en)

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Publication number Publication date
DE102021210134A1 (en) 2023-03-16
FR3126947A1 (en) 2023-03-17

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