Windshield wiper assembly and windshield wiper equipped with such an assembly

Abstract

TITLE: Wiper assembly and wiper equipped with such an assembly. Wiper assembly (20) comprising a heating unit (40) for the wiper blade (32) and a flexible rail (38). The heating unit (44) comprises a heating element (46) including an intermediate zone (50) along the main longitudinal extension (40) of the flexible rail (38), from one of the two portions of the flexible rail (48) to the other of the two portions of the flexible rail (48). The intermediate zone (50) extends over at least a large portion of the main longitudinal extension (40) of the flexible rail (38). Figure 2

Description

Title of the invention: Windshield wiper device and wiper equipped with such a device. FIELD OF THE INVENTION

[0001] The present invention relates to a windshield wiper device and to a windshield wiper equipped with such a device. STATE OF THE ART

[0002] A windshield wiper assembly is already known for a windshield wiper comprising a heating unit for heating the wiper blade and an elastic rail made, over a large part of its main longitudinal extension, in the form of two elastic rail sections separated from each other. The heating unit includes a heating element which has, along the main longitudinal extension of the elastic rail, an intermediate zone in which the installed heating element, viewed along the main longitudinal extension of the elastic rail, runs from one of the elastic rail sections to the other.

[0003] DESCRIPTION AND ADVANTAGES OF THE INVENTION

[0004] The invention relates to a windshield wiper device for a windshield wiper comprising a heating unit for heating a wiper blade and an elastic rail made over a large part of the length of the main longitudinal extension of the elastic rail by two elastic rail sections separated from each other,

[0005] the heating unit comprising at least one heating element,

[0006] having an intermediate zone along the main longitudinal extension of the elastic rail, and in which the heating element, particularly in the mounted state, extends along the main longitudinal extension of the elastic rail, from one of the two parts of the elastic rail to the other, this device being characterized in that the intermediate zone extends over at least a large part of the main longitudinal extension of the elastic rail.

[0007] In particular, the two lateral zones are provided respectively on opposite sides of the intermediate zone. Preferably, the two lateral zones extend at least practically completely over the maximum longitudinal extent of the heating element. The intermediate zone and the lateral zones are juxtaposed at least practically perpendicularly to the maximum longitudinal extent of the heating element.

[0008] The expression "practically perpendicular" refers in particular to the orientation of a line in a plane or direction, especially a succession of lines geometric shapes corresponding to the intermediate zone and the lateral zones, with respect to another line, another plane or another reference direction, in particular a line that includes the maximum longitudinal extension of the heating element; the line, plane or direction and the other line, other plane and the reference direction, in particular considered in a projection plane, form an angle of 90° with each other, the maximum deviation of which is less than 8°, preferably less than 5° and, in a particularly preferential manner, less than 2°. In particular, the intermediate zone and the two lateral zones are juxtaposed, according to the maximum longitudinal extension of the heating element.

[0009] In particular, the two lateral zones are directly joined to the intermediate zone, and in particular, they are connected by the intermediate zone. A heating element composed of a set of intermediate zones can also be considered, in particular, juxtaposed along the maximum longitudinal extension of the heating element, one behind the other. In particular, the intermediate zones extend at least largely along the main longitudinal extension of the elastic rail, in particular, at least practically completely along the main longitudinal extension of the elastic rail or the heating element.

[0010] Preferably, the wiper blade assembly is made as part of a wiper blade. Preferably, the heating element is mounted on the two lateral areas of the elastic rails, in particular on portions of the elastic rail. The elastic rail, in particular its portions, is preferably designed to hold or secure the wiper blade, especially along its entire main longitudinal extension. The elastic rail surrounds or clamps at least partially the wiper blade. The expression "designed to" means that it is a means specifically designed, intended, or equipped to perform a certain function. The fact that an object is designed to perform a certain function means that the object performs, executes, or ensures that specified function in at least one application or operating state.

[0011] Preferably, the maximum main longitudinal extension of the elastic rail, particularly in the mounted state of the wiper assembly, is at least practically parallel to the main extension axis of the wiper blade with respect to the maximum longitudinal extension of the heating element or the main longitudinal extension of the wiper blade. The term "practically parallel" refers to the orientation of a line, plane, or direction corresponding to the maximum main longitudinal extension of the elastic rail with respect to another reference line, plane, or direction, particularly a line corresponding to the main extension axis of the wiper blade, the maximum longitudinal extension of the heating element, or the main longitudinal extension of the wiper blade; the line, plane, or direction is compared to the other line, the other plane or the other direction, a deviation of less than 8°, preferably less than 5° and in particular preferably less than 2°.

[0012] By convention, the conjunction "or" used in the description is an inclusive or which combines the functions of "and" and "exclusive or".

[0013] Preferably, the two elastic rail sections are at least practically parallel. In particular, the two elastic rail sections are juxtaposed along the maximum principal longitudinal extension of the elastic rail. The two elastic rail sections are plate- or blade-shaped. The two elastic rail sections, particularly in the assembled state of the wiper assembly, lie in a common principal extension plane. The term "principal extension plane" designates a component, in particular the elastic rail sections, in a plane parallel to the largest lateral surface of the smaller parallelepiped that closely encloses the component and, in particular, passing through the center of the parallelepiped.It is also possible to consider that the elastic rail is in two parts along its entire main longitudinal extension, in particular the two parts of elastic rail are connected or the two parts of elastic rail are connected by at least one point of connection.

[0014] The heating element is preferably in the form of a heating film or, in particular, a surface-applied heating wire. The heating element transmits heating power through its two lateral zones and through the intermediate zone. Preferably, the heating element is fixed by its two lateral zones to the elastic rail, in particular to the two sections of the elastic rail, for example by bonding. A heating unit composed of a set of heating elements, particularly in the area where it connects to the wiper blade adapter, can also be considered.

[0015] Preferably, the wiper assembly is connected to the wiper blade and includes at least one wiper blade adapter. The wiper assembly secures the wiper blade to the wiper blade adapter. The wiper assembly includes, in particular, the elastic rail designed to receive at least one wiper blade deflector. It is possible for the elastic rails, in particular the elastic rail sections, to have at least one PET coating. Preferably, the heating unit includes at least one heating element for heating a fluid channel of the wiper blade, in particular a fluid channel defined by the deflector and the fluid channel defined by the wiper blade adapter.

[0016] The windshield wiper assembly according to the invention has the advantage of comprising a robust heating element, particularly because the intermediate zone is advantageously large. This allows for quick and reliable mounting of the windshield wiper assembly or the wiper blade, especially because the element The heating element has the advantage of covering a large area of ​​both sections of the flexible rail, and it is positioned simultaneously. The assembly cost is significantly reduced. This also simplifies the stabilization of the wiper blade, particularly because it eliminates the need for additional parts. The invention has the advantage of providing consistent heating of the wiper blade.

[0017] According to another feature, the heating element, particularly in its mounted state, is applied to the intermediate area against the wiper blade, specifically against the blade's leading edge. This simplifies the stabilization of the wiper blade, which is held in place by the elastic rail sections. The elastic rail sections are fixed relative to each other in the wiper blade's installed position. This prevents movement between the lateral areas of the heating element on the elastic rail sections. The result is an advantageously stable arrangement of the heating element as part of the installed wiper blade.

[0018] Preferably, the intermediate zone is separated from the elastic rail, in particular from the elastic rail sections. In particular, the intermediate zone, in the installed state of the wiper assembly, is perpendicular to the principal plane of extension of the elastic rail or the heating element, being offset from the lateral zones. In particular, the elastic rail, in particular its elastic rail sections, is designed so that the wiper blade extends, at least partially, particularly via the head portion of the wiper blade, between the two elastic rail sections, and in particular on one side of the elastic rail equipped with the heating element. Preferably, the heating element is applied against the wiper blade, on the surface, in the intermediate zone, particularly on the head portion of the wiper blade, and preferably at least over a large part of the intermediate zone forming the inner surface of the heating element.In particular, the inner surface of the heating element is provided on one of the elastic rails or the side of the heating element facing the wiping blade.

[0019] According to another feature, the wiper assembly comprises at least one connecting zone for attaching to a wiper adapter, the intermediate zone of the heating element along the main longitudinal extension of the elastic rail extending at least practically over the maximum length of the connecting zone. This advantageously provides even heating of the wiper blade and the fluid channels of the wiper adapter. The wiper assembly is attached to the wiper adapter by the connecting zone, and in particular, the wiper adapter is connected to the elastic rail by a clamping or snap-fit ​​connection.

[0020] According to another feature, the intermediate zone extends along the main longitudinal length of the elastic rail, practically covering the entire maximum longitudinal length of the heating element. This advantageously avoids weak points in the heating element along the main longitudinal length of the elastic rail. This prevents accidental damage to the heating element during wiper operation. It also provides the advantage of even heating of the wiper blade along the entire length of the wiper arm.The expression "virtually completely" means that, in particular, a part of a body with respect to a property of the body, a function of the body, or an activity performed by the body—specifically, a part of the maximum longitudinal extension of the heating element—extends over the intermediate zone, the fraction corresponding to at least 95%, preferably at least 98%, and most preferably at least 99% of the whole. It could be envisaged that the intermediate zone extends at least practically completely over the maximum longitudinal extension of the elastic rail, with the exception of the end zones of the elastic rail, which serve, in particular, to attach an end cap to the wiper blade.

[0021] According to another feature, the heating element directly heats the elastic rail sections and, via the intermediate zone, the wiper blade, in particular the tip of the wiper blade. This advantageously allows for even heating of the wiper blade, including the elastic rail and the wiper blade. This results in an advantageously simple embodiment of the heating element, particularly because the heating element is made at least practically entirely as a uniform surface. Preferably, the heating element transmits heat through its intermediate zone applied against the wiper blade, specifically the tip of the wiper blade. The heating element transmits heat to the elastic rail sections via the lateral zones.

[0022] In a particularly preferred manner, at least one heating element forms a conductive path that extends at least zone by zone into the intermediate zone and through the intermediate zone. In particular, the heating element generates heat through the electrical voltage applied by the conductive path. The density of the conductive path in the lateral zones of the heating element corresponds, at least substantially, to the density of the conductive path in the intermediate zone of the heating element. Alternatively, or in addition, the conductive path extends along the maximum longitudinal extent of the heating element, at regular intervals, through the intermediate zone, in particular from lateral zones into another lateral zone.

[0023] According to another feature, the heating element is provided, particularly viewed along the main longitudinal extension of the elastic rail, to surround the elastic rail Specifically, the intermediate zone is designed to clamp the wiper blade, particularly its tip. This allows for a stable and advantageously fixed position of the wiper blade, especially via the elastic rail and the heating element. This provides the advantage of direct heat transfer to both the elastic rail and the wiper blade. In particular, depending on the main longitudinal extension of the elastic rail, the heating element, together with the elastic rail, surrounds the wiper blade, particularly its tip, at least partially, or at least largely, in the intermediate zone. The heating element, in combination with the elastic rail, is designed to clamp the wiper blade, particularly its tip, in the intermediate zone.Preferably, the elastic rail forms at least one receiving recess for the wiping blade between the two elastic rail sections, in particular the head portion of the wiping blade. The elastic rail, in particular the elastic rail sections, are designed to receive the wiping blade by means of a connection through the shape within the receiving recess, and in particular the head portion of the wiping blade applies at least a large part against one side of the elastic rail facing the heating element, against the elastic rail, in particular the elastic rail sections.

[0024] The intermediate zone extends, in particular, in the installed state of the wiper assembly, considered along the main longitudinal extension of the elastic rail, completely over the maximum transverse extension of the receiving recess. Preferably, the intermediate zone, in particular, in the mounted state of the wiper assembly viewed along the main longitudinal extension of the elastic rail, extends at least partially over the maximum transverse extension of the two parts of the elastic rail. Preferably, the two parts of the elastic rail and the heating element are designed so that the head portion of the wiper blade, in particular, in the mounted state of the wiper assembly, viewed along the main longitudinal extension of the elastic rail, extends from the receiving recess at least partially over the main transverse extension of the two parts of the elastic rail.

[0025] In particular, in the assembled state of the wiper assembly and preferably considering the main longitudinal extension of the elastic rail, the two elastic rail sections and the heating element are installed and, in particular, clamped between the elastic rail sections and the intermediate zone of the heating element. Specifically, the elastic rail, and in particular the elastic rail sections, are designed so that the head portion of the wiper blade bears against the outer surfaces of the two elastic rail sections facing the heating element.

[0026] The invention also relates to a windshield wiper comprising a wiping blade and a wiper arm assembly as described above, according to the invention. The windshield wiper comprises the wiper arm. In particular, the wiper arm assembly is made as part of the wiper arm. Preferably, the wiper arm comprises the wiper arm adapter, in particular for attaching the wiper arm to the wiper arm. The wiper arm comprises one, and in particular two, end caps, each to be attached to one of the two end zones of the elastic rail. The end caps prevent relative movement of the elastic rail, the deflector, or the wiper blade in a direction that is at least practically parallel to the main longitudinal extension of the elastic rail or the wiper blade.

[0027] The windshield wiper assembly according to the invention advantageously results in a robust construction, particularly of the wiper blade. The invention allows for quick and secure mounting of the wiper blade, notably because the heating element is advantageously applied over a large surface area on both sections of the elastic rail simultaneously. This translates into the advantage of reduced assembly costs. The wiper blade is also advantageously stabilized in a simple manner, particularly by avoiding the need for additional parts. The invention advantageously provides uniform heating of the wiper blade. Brief description of the drawings

[0028] The present invention will be described in more detail below with the aid of examples of windshield wiper devices shown in the accompanying drawings in which:

[0029] [Fig. 1] Schematic representation of a windshield wiper according to the invention with a wiper blade device according to the invention,

[0030] [Fig.2] Schematic representation of a windshield wiper blade according to the invention with a windshield wiper device according to the invention,

[0031] [Fig.3] Schematic representation of the windshield wiper according to the invention with a wiper blade device according to the invention at the wiper blade end area, and

[0032] [Fig.4] Schematic cross-sectional view of the wiper blade of the wiper according to the invention with a wiper device according to the invention.

[0033] DESCRIPTION OF AN IMPLEMENTATION METHOD

[0034] Figure 1 schematically shows a windshield wiper 10 for a vehicle. The windshield wiper 10 comprises a wiper blade 12 and a wiper arm 14. The wiper arm 14 has a wiper arm adapter 16 for attaching it to the adapter 18 of the wiper blade 12. The wiper blade 12 is shown in detail in [Fig.2]. In particular, the wiper arm 14 and the wiper blade 12 are removably attached to each other by the wiper arm adapter 16 and the wiper blade adapter 18. The wiper 10 includes a wiper blade device 20 made in particular as part of the wiper blade 12.

[0035] The wiper blade 12 further comprises a windshield washer fluid distribution unit consisting of two fluid channels 22. The fluid channels 22 extend respectively or largely over the maximum longitudinal extension 24 of the wiper blade 12 (see [Fig. 2]), particularly in the deflector 26 of the wiper blade (see [Fig. 4]). The fluid channels 22 are connected by the wiper blade adapter 18 to a respective hose 28; the hoses 28 extend along the wiper arm 14 from the wiper arm adapter 16 of the wiper arm stem 14 to the junction point 30 of the wiper 10 to be connected to an external fluid reservoir. The wiper blade 12 includes a wiping blade 32, a deflector 26 and two end caps 34.But other embodiments of the wiper 10, in particular of the wiper blade 12 or the wiper arm 14, can also be found in the wiper blade assembly 20. The wiper blade assembly 20 includes a connecting area 36 linked to the wiper blade adapter 18 of the wiper 10, in particular of the wiper blade 12 (see [Fig.2]).

[0036] The connecting zone 36 has a maximum length 54 (see [Fig. 2]) which extends, in particular, at least practically parallel to the main extension axis 56 of the wiper blade 12 or the wiper assembly 20. The wiper blade 12 has a flexible rail 38. The flexible rail 38 has a maximum main longitudinal extension 40 which is at least practically parallel to the maximum longitudinal extension 24 of the wiper blade 12 or to the main extension axis 56 of the wiper blade 12. The flexible rail 38 extends at least practically completely over the maximum longitudinal extension 24 of the wiper blade 12. The flexible rail 38 is part of the wiper assembly 20. The end caps 34 are installed in the end zones 42 of the wiper blade 12 or the elastic rail 38.

[0037] Figure 3 is a schematic detail view of the wiper blade 12 at one of the end zones 42 of the wiper blade 12 or of the elastic rail 38. The deflector 26 and the end cap 34 have not been shown to avoid cluttering the figure. The wiper blade assembly 20 includes a heating element 44 for heating the wiper blade 32 of the wiper 10 / wiper blade 12. The heating unit 44 includes a heating element 46 in the form of a heating film installed on the elastic rail 38. Other embodiments of the heating unit 44 may also be considered, in particular of the element heating element 46, for example, one or more heating elements 46 or an embodiment of the heating element 46 in the form of a heating film or, in particular, as a heating wire or similar means. The elastic rail 38 extends at least largely along the main longitudinal extension 40 and consists of two rail sections 48 separated from each other. The heating element 46 includes an intermediate zone along the main longitudinal extension 40 of the elastic rail 38; in this intermediate zone, the heating element 36, particularly in the installed state shown in [Fig. 3], extends along the main longitudinal extension 40 of the elastic rail 38 (see also [Fig. 4]) from one of the two elastic rail sections 50 to another of the two elastic rail sections 50.

[0038] The heating element 46 has two lateral zones 52 by which the heating element 46 is mounted on the two sections of elastic rail 48. The heating element 46 is preferably formed from the intermediate zone 50 and the two lateral zones 52. The heating element 46 is connected, in particular, by the two lateral zones 52, by an adhesive bond to the elastic rail 48, in particular to the two sections of elastic rail 48. The heating element 46 is fixed, in particular, by the two lateral zones 52 to the elastic rail 38, in particular to the two sections of elastic rail 48. The intermediate zone of the heating element 46 extends from an end zone 42 of the elastic rail 38 provided for the attachment of one of the end caps 34 along the main longitudinal extension 40 of the elastic rail 38 to the other end zone 42 of the elastic rail 38 used to attach one of the caps. end 34.

[0039] The intermediate zone 50 of the heating element 46 extends over a large part of the main longitudinal extension 40 of the elastic rail 38 (see [Fig. 2]). The intermediate zone 50 extends along the main longitudinal extension 40 of the elastic rail 38, at least practically completely over the maximum longitudinal extension 68 of the heating element 46; this direction is at least practically parallel to the main longitudinal extension 40 of the elastic rail 38 (see [Fig. 2]). The intermediate zone 50 of the heating element 46 extends along the main longitudinal extension 40 of the elastic rail 38 practically completely over the maximum length 54 of the connecting zone 36 (see [Fig. 2]).

[0040] The elastic rail 38, in particular the two parts of the elastic rail 48, are provided to fix the wiping blade 32, preferably by clamping the head part 58 of the wiping blade 32 between the two parts of the elastic rail 48.

[0041] The head portion 58 of the wiping blade 32 is formed at the end of the wiping blade 32 opposite the wiping lip 60 of the wiping blade 32. The heating element 46 extends at least largely, and in particular at least practically completely, over the maximum transverse extension 62 of the elastic rail 38. The heating element 46 extends parallel to the maximum transverse extension 62 of the elastic rail 38, completely on the receiving recess 64 of the elastic rail 38 and it is completely made by the receiving recess 64 of the elastic rail 38 in particular between the two parts of elastic rail 50. The elastic rail 38 in particular the two parts of elastic rail 50 are provided to receive at least in part the wiping blade 32 in particular the head part 58 of the wiping blade 32 by the receiving recess 64.

[0042] The two elastic rail sections 48 are separated from each other by the receiving recess 64. The receiving recess 64 extends over the maximum main longitudinal extension 40 of the elastic rail 38. Alternatively, the elastic rail sections 48 can be connected at least by a connection point, and in particular, the two elastic rail sections 50 define, in the end areas 42, a fixing recess 66 for attaching the end cap 34. Preferably, the heating element 46 is designed, or the elastic rail 38 is designed, so that the fixing recesses 66 are freely formed, in particular so that they are not hidden by the heating element 46.

[0043] The heating element 46 is made in the intermediate zone 50, offset from the elastic rail 38, in particular the two portions of elastic rail 48 (see also [Fig. 4]). In the intermediate zone 50, the heating element 46 is at least practically perpendicular to the maximum transverse extension 62 of the elastic rail 38 and at least practically perpendicular to the maximum longitudinal extension 68 of the heating element 46 or to the maximum main longitudinal extension 40 of the elastic rail 38, being offset with respect to the two lateral zones 52 or the two portions of elastic rail 48. The heating element 46 is made without a recess over at least a large part of the maximum longitudinal extension 68 of the heating element 46, in particular over the maximum longitudinal extension 68 of the heating element 46.

[0044] Fig. 4 is a cross-sectional view of the wiper blade 12, particularly in the area separated from the connecting area 36 of the wiper blade device 20 and the end areas 42 of the wiper blade 12. In Fig. 4, the wiper blade 12 or the wiper blade device 20 is shown according to the main longitudinal extension 40 of the elastic rail 38 (see Fig. 3). The deflector 26 delimits the two liquid channels 22 of the wiper blade 12. In particular, the liquid channels 22 are each time above one of the two elastic rail parts 48 and above one of the two lateral areas 52 of the heating element 46. The heating element 46 is applied on the intermediate area 50 against the head part 58 of the wiper blade 32.

[0045] The heating element 46 is applied by the two lateral zones 52, surface-mounted against the two elastic rail sections 48. The heating element 46 is applied by the two lateral zones 52, preferably surface-mounted against the inner surface of the deflector. 26. The heating element 46 directly heats the elastic rail sections 48 and, via the intermediate zone 52 of the wiper blade 32 of the wiper 10, heats the head portion 58 of the wiper blade 32. The heating element 46 is located over a large portion of the intermediate zone 52, on the surface against the head portion 58 of the wiper blade 32. The two elastic rail sections 48 are installed at least practically parallel to each other. The two elastic rail sections 48 have a common principal extension plane 70.

[0046] The heating element 46 is provided, particularly as seen along the main longitudinal extension 40 of the elastic rail 38, to surround, together with the elastic rail 38, the intermediate zone 50 of the heating element 46 and largely 58 of the wiping blade 32. The heating element 46 clamps, with the elastic rail 38 and on the intermediate zone 50 of the heating element 46, the head portion 58 of the wiping blade 32. The elastic rail 38, in particular the portions of elastic rail 48, are provided to receive the wiping blade 32 by a connection through the shape via the receiving recess 64, the head portion 58 of the wiping blade 32 being applied, in particular largely against one side of the elastic rail 38, turned towards the heating element 46, to come against the elastic rail 38, in particular the portions of elastic rail 48.

[0047] The intermediate zone 50 extends along the main longitudinal extension 40 of the elastic rail 38, at least partly over the maximum transverse extension 72 of the two elastic rail parts 48. The two elastic rail parts 48 and the heating element 46 are made so that the head part 58 of the wiping blade 32, considered along the main longitudinal extension 40 of the elastic rail 38, from the receiving recess 64, each time at least partly over the maximum transverse extension 72 of the two elastic rail parts 48. In particular in the state.In particular, in the assembled state of the wiper assembly, preferably considered according to the main longitudinal extension 40 of the elastic rail 38, the two elastic rail sections 48 and the heating element 46 are designed to be installed between the two elastic rail sections 48 and the intermediate zone 50 of the heating element 46, in particular being clamped between them by the part of the head portion 58 of the wiper blade 32 which extends over the maximum transverse extension 72 of the two elastic rail sections 48, being in particular clamped between the elastic rail sections 48 and the intermediate zone 50 of the heating element 46. The elastic rail 38, in particular the elastic rail sections 48, are designed so that the head portion 58 of the wiper blade 32 is applied surface-to-surface against the outer surface 76 of the two elastic rail sections 68 with the heating element 46.

[0048] NOMENCLATURE OF MAIN ELEMENTS

[0049] 10 Windshield wiper

[0050] 12 Windshield wiper blade

[0051] 14 Windshield wiper arm

[0052] 16 Wiper arm adapter

[0053] 18 Wiper blade adapter

[0054] 20 Windshield wiper device

[0055] 22 Liquid channel

[0056] 24 Maximum longitudinal extension of the wiper blade

[0057] 26 Deflector

[0058] 28 Pipe

[0059] 30 Connection point

[0060] 32 Wiping blade

[0061] 34 End cap

[0062] 36 Connection Zone

[0063] 38 Elastic rail

[0064] 40 Main longitudinal extension of the elastic rail

[0065] 42 Wiper blade end area

[0066] 44 Heating unit

[0067] 46 Heating element

[0068] 48 Elastic rail part

[0069] 50 Elastic rail part

[0070] 50 Intermediate Zone

[0071] 52 Lateral area

[0072] 54 Maximum length of the bonding zone

[0073] 56 Main extension shaft of the windshield wiper blade

[0074] 58 Head part of the wiping blade

[0075] 62 Maximum transverse rail extension

[0076] 64 Receipt of the elastic rail

[0077] 66 Fixing recess

[0078] 68 Maximum longitudinal extension of the heating element

[0079] 72 Maximum transverse extension of the elastic rail parts

[0080] 76 Outer surface of the two elastic rail parts

Claims

Demands

1. A wiper blade device (20) for a wiper (10) comprising at least one heating unit (44) for heating a wiper blade (32) of the wiper (10) and at least one elastic rail (38) formed at least along a portion of the length of the main longitudinal extension (40) of the elastic rail (38) by two elastic rail sections (48) separated from each other, the heating unit (44) comprising at least one heating element (46), the heating element (46) having at least one intermediate zone (50) along the main longitudinal extension (40) of the elastic rail (38), in which the heating element (46), particularly in the mounted state, extends along the main longitudinal extension (40) of the elastic rail (38), from one of the two elastic rail sections (48) to the other of the two elastic rail sections (48), the An intermediate zone (50) of the heating element (46) is provided, particularly in the mounted state,to be applied against the wiper blade (32) of the windshield wiper (10), in particular against a head portion (58) of the wiper blade (32), the intermediate zone (50) extends over at least a portion of the main longitudinal extension (40) of the elastic rail (38), characterized in that the heating element (46) is provided to directly heat the portions of the elastic rail (48) and, via the intermediate zone (50), the wiper blade (32) of the windshield wiper (10), in particular the head portion (58) of the wiper blade (32).

2. Wiper blade device (20) according to claim 1, characterized in that at least one connection zone (36) is provided to be connected to the wiper blade adapter (18) of the wiper (10), the intermediate zone (50) of the heating element (46) extending along the main longitudinal extension (40) of the elastic rail (38), at least in part or completely over a maximum length (54) of the connection zone (36).

3. Windshield wiper device (20) according to any one of the preceding claims, characterized in that the intermediate zone (50) extends, in particular along the main longitudinal extension (40) of the elastic rail (38), completely over the maximum longitudinal extension (68) of the heating element (46).

4. Wiper blade device (20) according to any one of claims 1 to 3, characterized in that the heating element (46) is provided, according to the main longitudinal extension (40) of the elastic rail (38), on the intermediate area (50), to surround at least in part, in particular to clamp, the wiper blade (32) of the wiper (10), in particular the head part (58) of the wiper blade (32).

5. Windscreen wiper (10) comprising at least one wiper blade (32) and at least one wiper arm device (20) according to any one of the preceding claims.

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