Windshield wiper assembly

Abstract

TITLE: Wiper device Wiper device comprising at least one elastic rail (12a, 12a'), with a wiper blade unit (14a) having a wiper lip (16a) and a base body (18a) having a recess (20a) to receive the elastic rails (12a, 12a') and a damping cavity (22a) separate from the recess (20a) and a deflector unit (24a) which partially surrounds the wiper base body (18a) and which has two guide spacers (16a, 16a') on both sides of the base body (18a). The wiping blade unit (14a) includes an elastic support element (28a, 28a') on the base body (18a) and which bears between the base body (18a) and one of the guide spacers (26a, 26a'). Figure 2

Description

Title of the invention: Windshield wiper device FIELD OF INVENTION

[0001] The present invention relates to a windshield wiper device comprising an elastic rail, a wiper blade unit with a lip and a base body which defines a recess to receive an elastic rail and a damping cavity separate from the recess and a deflector unit overlapping at least in part the base body of the wiper blade unit and comprising at least two guide spacers on both sides of the base body. STATE OF THE ART

[0002] A wiper blade device of the type defined above is already known.

[0003] DESCRIPTION AND ADVANTAGES OF THE INVENTION

[0004] The invention relates to a windshield wiper device comprising at least one elastic rail, with a wiper blade unit having a wiper lip and a wiper base body provided with a recess for receiving the elastic rail and a damping cavity separate from the recess and a deflector unit partially surrounding the wiper base body of the wiper blade unit and which has two guide spacers on both sides of the base body, this windshield wiper device being characterized in that the wiper blade unit comprises an elastic support element on the base body and bearing between the base body and one of the guide spacers.

[0005] A wiper assembly within the scope of this description is a part, in particular a subassembly, of a wiper blade and, more specifically, a wiper blade and advantageously, a vehicle wiper blade. The wiper assembly comprises the entire wiper blade. A wiper assembly may also be constructed partly as a flat wiper blade or a beam wiper blade. The wiper assembly is intended for use on a vehicle to clean a surface, in particular a vehicle window. The wiper assembly cleans a vehicle window by being coupled to the wiper arm. The term "coupled" in this context represents a connection by form or force. The term "intended for" applies to a means specifically designed, constructed, or equipped to perform a certain function.The fact that an object performs a certain function means that this object carries out or executes this specific function in at least one state of application or operation.

[0006] The expression "wiping blade unit" refers in particular to a unit in one An elastic material for cleaning a surface, in particular a glass surface, preferably a vehicle window, in contact with the surface to be cleaned. The wiping blade unit comprises a base body and a wiping lip. The wiping lip preferably forms the contact area between the wiping blade unit and the glass to be wiped. The base body is held away from the glass to be cleaned by the wiping lip. The base body is preferably rigid, in particular made in one piece with the wiping lip. The wiping blade unit is made of a natural or synthetic elastomer, in particular, a plastic or rubber.

[0007] The basic body of the wiping blade unit is designed to receive, at least partially, an elastic rail for stabilization. The wiping blade unit forms, in particular, a recess for the elastic rail, either partially or preferably entirely. In this context, the term "elastic rail housing" refers to a channel or groove for receiving, at least partially, the elastic rail. The elastic rail housing surrounds, at least to a large extent, the elastic rail in its principal direction of extension. The wiping blade unit forms an elastic rail housing designed as an elastic rail channel that fully receives the elastic rail. Alternatively, the wiping blade unit has two housings in the form of lateral grooves, each partially receiving at least one elastic rail. Through this elastic rail housing, the wiping blade unit can be connected to an elastic rail.The dimensions of the elastic rail housing are adapted to the shape and dimensions of an elastic rail. Advantageously, the wiping blade unit is connected to the elastic rail by a form-fitting connection, in particular by force.

[0008] An elastic rail is a macroscopic element with an extension that, under normal operating conditions, can vary by at least 10%, in particular by at least 20%, preferably by at least 30%, and, particularly advantageously, by at least 50%, elastically, and generate a reaction dependent on the variation in extension, preferably proportional to this variation, to counteract this variation. The elastic rail is at least partly made of spring steel. Alternatively, the elastic rail is at least partly made of plastic, a composite material, or another technically advantageous material. The elastic rail, in its unstressed state, is practically in the shape of a curved rod and, particularly advantageously, that of a flattened, curved rod. The elastic rail is advantageously made in one piece.Alternatively, the elastic rail can also be composed of several parts and, in a particularly advantageous way, it has a curvature along its longitudinal direction in the unstressed state that is greater than the curvature of the surface of the vehicle window, in particular, of the window over which the elastic rail passes in the operating state.

[0009] The expression "elastic object" refers to an object that can be repeatedly deformed without being mechanically damaged or destroyed, and in particular, for that after deformation, it automatically returns to its basic shape. The wiper assembly comprises at least two, and specifically exactly two, elastic rails. The term "extension" of an element refers in particular to the maximum distance between two points on a perpendicular projection of the element onto a plane. The term "macroscopic element" refers to an element having an extension of at least 1 mm, specifically at least 5 mm, and preferably at least 10 mm.

[0010] The term "deflector unit" in this context refers to a unit for deflecting an airflow acting on the wiper assembly or circulating wind and pressing the wiper blade against the surface to be wiped. Preferably, the deflector unit is at least partly made of rubber or a partially elastic plastic material. Preferably, the deflector unit has a concave contact surface. The deflector unit is distinct from the end cap, elastic rail, or wiper blade adapter.

[0011] Advantageously, the operating deflector unit extends over at least a portion, preferably over at least a large portion, of the wiper arm extension along the principal direction of extension. The deflector unit is at least a single piece, in particular exactly a single piece. Preferably, the deflector unit is implemented as the upper structure of the wiper blade unit.

[0012] In this context, the term "support element" refers to an element which, in at least one operating state, supports the wiper blade unit, particularly in the lateral direction, against the deflector unit. The support element partially dampens the force transmitted by the guide spacer. In its installed state, the support element ensures at least a reduction in the lateral play of the deflector unit relative to the deflector unit, without significantly limiting the deflector unit's mobility in the longitudinal direction. The support element is practically unconstrained in the relaxed state of the wiper blade unit. The term "lateral play" specifically means a clearance for the movement of the components concerned in the wiping direction. It can also be considered that the support element, in its installed state, reduces the lateral play of the wiper blade unit compared to an elastic rail.It can also be envisaged that the support element, in its installed state, ensures at least a reduction in the lateral play of a partial element, in particular the basic wiping body relative to the wiping lip. The support element is preferably designed for a force connection between the wiping blade unit and the deflector unit, in particular guide spacers. Alternatively, or in addition, the support element is designed for a form connection, in particular by bearing against a guide spacer. The term "wiping direction" preferably designates a direction perpendicular to the direction. main extension of the wiping blade unit which is perpendicular to the normal to the surface to be cleaned.

[0013] Preferably, the support element extends along a principal direction of extension of the wiping blade unit over the entire wiping unit. The expression "principal direction of extension" of an object refers in particular to a direction parallel to the longest edge of the smallest parallelepiped closely surrounding the object.

[0014] The windshield wiper assembly according to the invention allows, in particular, the stabilization of the wiper blade unit, notably providing the advantage of quiet wiping by the wiper assembly. The wiping lip is fixed for the wiping operation. A support element is formed directly with the wiper blade unit. This support element prevents noisy wiping operation.

[0015] According to another feature, the wiper blade unit comprises at least two elastic support elements on opposite sides of the base body, which bear respectively between the base body and one of the guide spacers. The wiper blade unit is planar symmetrical with respect to a plane parallel to the principal direction of extension of the wiper blade unit, perpendicular to the wiping direction. This allows for advantageous attachment of the base body, resulting in quiet wiping by the wiper arm device. The wiping lip is advantageously fixed for the wiping operation.

[0016] According to another feature, the base body has two side walls that define the damping cavity on one side; the support elements are provided directly on one of the side walls. The damping cavity has a rectangular cross-section, particularly in a plane perpendicular to the principal direction of extension of the wiping blade unit. The base body has a bottom wall facing the wiping lip, a top wall facing the deflector unit, and two side walls that define the damping cavity in a plane perpendicular to the principal direction of extension of the wiping blade unit. Along the principal direction of extension, the wiping blade unit has a constant cross-section. The two support elements of the opposing side walls are respectively located on the outer side opposite the damping cavity.The two support elements are oriented towards each other, allowing for advantageous attachment of the base body. This results in quiet wiping by the wiper blade mechanism. The wiping lip is advantageously fixed for the wiping operation.

[0017] The deflector unit is applied to both sides of the base body, with pressure on the wiping blade unit such that the movement of the wiping blade unit is limited in the transverse direction during the return movement, to reduce noise from reversing motion. The compressibility and flexibility of the support elements result in a point load, preserving some freedom of movement for the wiper blade unit in the longitudinal direction and minimizing transient noise. To enhance this effect, the inner surface of the deflector unit, particularly the guide spacers, is made of a very low-friction material or is coated.

[0018] According to another feature, the two elastic support elements are on opposite sides, level between the base body and the respective guide spacer. The support elements come with their outer end directly against the guide spacers, and thus their inner end comes directly against the base body. Preferably, the wiper blade unit is installed between the guide spacers by the support elements, without a gap. This provides an advantageous fixing of the base body. In particular, there is the advantage of quiet wiping by the wiper blade assembly.

[0019] According to another feature, a support element of the wiping blade unit is formed as a single piece with the base body. Advantageously, the base body is formed as a single piece with the wiping lip and with the support element. The expression "as a single piece" means that the connection is made by means of material, for example, by welding, bonding, overmolding, or another technically advantageous process, or that the element is formed as a single piece, for example, by casting or by a one- or multi-component injection molding process; advantageously, the element is produced from a single blank. The entire wiping blade unit can be produced by extrusion. However, other technically advantageous manufacturing processes can also be considered. The result is a particularly small number of components.

[0020] The support elements can be made of the same material as the base body or of another material, in particular, one that is stronger, more robust, compressible, or flexible to provide greater strength. This allows the wiping blade unit to be manufactured, in particular, by a multi-component injection molding process, notably a co-extrusion process.

[0021] According to another feature, the support element of the wiping blade unit is formed by a diagonal spacer whose upper end, opposite the wiping lip, is the wiping base body, and whose lower end, facing the wiping lip, is on the guide spacer of the deflector unit. The support element has, in cross-section perpendicular to the principal direction of extension of the wiping blade unit, a rectangular spacer shape. Preferably, the longer lateral edge of the support element is on the base body. The second lateral edge of the support element abuts the guide spacer of the deflector unit. deflector. This allows for a particularly simple structural support element. In addition, it offers the advantage of a spring effect.

[0022] According to another feature, the guide spacer of the deflector unit has a free end, the respective lower end of a support stage designed to receive the free end of a bearing element. Preferably, the bearing gradient is inward in the receiving area of ​​the deflector unit. Preferably, the gradient is formed by a rectangular spacer extending over the entire main length of the deflector unit. This provides, in particular, a defined position for the bearing element, which notably prevents the bearing element from slipping. The point of application of the force is thus particularly well defined.

[0023] According to another feature, the wiper blade support element is formed by two arms that meet at a point and, together with a lateral wall of the base body, form a compressible triangle. The arms are formed by struts extending along the main direction of extension of the wiper blade unit over its entire length. The arms and the lateral walls of the base body form a triangular cross-section perpendicular to the main direction of extension of the wiper blade unit. The arms and the lateral wall of the base body also define, in cross-section perpendicular to the main direction of extension of the wiper blade unit, a triangular cavity separate from the damping cavity. This cavity serves, in particular, to compress the support element. This results in an advantageously stable support element that prevents it from tipping over.

[0024] According to another feature, the guide spacer of the deflector unit has, on its inner side, a notch for receiving the tip of a bearing element. The notch is, in particular, in the form of a groove extending along the entire length of the deflector unit. The notch preferably serves to prevent the bearing element from slipping. This results in a defined position for the bearing element. In particular, it prevents the bearing element from slipping. The point of application of the force is thus defined.

[0025] The invention also relates to a wiper blade for a windshield wiper device. Brief description of the drawings

[0026] The present invention will be described in more detail below with reference to a windshield wiper device shown in the accompanying drawings in which:

[0027] [Fig. 1] Schematic perspective view of a windshield wiper device according to the invention with a deflector unit, two elastic rails and a blade unit wiping,

[0028] [Fig.2] Schematic cross-sectional view along the cutting plane (II-II) of the brush device windshield wipers according to the invention, and

[0029] [Fig.3] Schematic cross-sectional view of a variant of a wiper blade device according to the invention.

[0030] DESCRIPTION OF EMBODIMENT METHODS OF THE INVENTION

[0031] Figure 1 shows a wiper assembly 10a. The wiper assembly 10a includes at least one elastic rail 12a, 12a' (see Figure 2). The wiper assembly 10a includes, for example, two elastic rails 12a, 12a'. In addition, the wiper assembly 10a has a deflector unit 14a. The wiper assembly 10a further includes at least one deflector unit 24a. The wiper assembly 10a has a wiper adapter 40a. The wiper adapter 40a connects the wiper assembly 10a to the wiper arm (not shown). The wiper blade adapter 40a is designed to be connected directly to the unshown wiper arm adapter of the unshown wiper arm. The wiper blade adapter 40a is located between two partial segments of the deflector unit 24a.

[0032] The deflector unit 24a is designed to deflect the wind acting on the windshield wiper assembly 10a installed on a vehicle (not shown). The deflector unit 24a deflects the wind and applies the resulting force to increase the pressure exerted by the windshield wiper assembly 10a on the vehicle's windshield. The deflector unit 24a of the windshield wiper assembly 10a is in two parts. The deflector unit 24a consists of two deflector elements 42a and 44a. The two deflector elements 42a and 44a are located on opposite sides of the windshield wiper adapter 40a. The wiping blade unit 14a is held in the deflector unit 24a by the two elastic rails 12a, 12a'. The two elastic rails 12a, 12a' are guided respectively in a recess 20a, 20a' and are surrounded externally by the deflector unit 24a.The two elastic rails 12a, 12a' are further connected, along their main direction of extension, each time at their non-visible midpoint, in a rigid manner to the wiper blade adapter 40a. The main direction of extension of the elastic rails 12a, 12a' corresponds to the main direction of extension of the wiper blades 10a and to the main direction of extension of the wiper blade unit 14a.

[0033] The deflector unit 24a comprises a deflector base body formed on the upper side of a deflector 66a and, on the lower side, a flexible rail housing 68a for receiving the flexible rails 12a, 12a'. The deflector unit 24a overlaps at least partially a base body 18a of the wiper blade unit 14a. The deflector unit 24a comprises two guide spacers 26a, 26a' on both sides of the base body 18a. The guide spacers 26a, 26a' are each formed by a rectangular spacer extending along the lower side of the deflector base body, parallel to each other and projecting from the deflector base body. The guide spacers 26a, 26a' are oriented along the main extension direction 46a over the entire deflector unit 24a.

[0034] Preferably, the wiper blade assembly 10a comprises at least one end cap 62a. The wiper blade assembly 10a has at least one other end cap 64a. The end caps 62a and 64a are provided in the opposite end areas of the maximum extension of the wiper blade assembly 10a in its longitudinal direction.

[0035] The wiper blade unit 14a is formed from a long, slender body with a practically constant cross-section along its entire length. The wiper blade unit 14a is manufactured by extrusion. In principle, other technically advantageous manufacturing processes can also be considered. The wiper blade unit 14a is made primarily of rubber. However, other technically advantageous materials can also be considered. The wiper blade unit 14a has a wiping lip 16a and at least one base body 18a. The wiping lip 16a is designed to apply directly against the vehicle window. The wiping lip 16a has a substantially triangular cross-section; the free lower edge of this cross-section forms a wiping edge 48a. The wiping lip 16a has a practically triangular section in a plane perpendicular to the main extension direction 46a of the wiper blade device 10a.The base body 18a has a substantially rectangular cross-section. The base body 18a has a rectangular base element 54a. The wiping lip 16a is rigidly connected to the base body 18a. The wiping lip 16a is connected to the base element 54a of the base body 18a by the narrow spacer 50a of the base body 18a. The side of the base body 18a opposite the wiping lip 16a has a head blade 52a. The head blade 52a is connected to the base element 54a of the base body 18a by a narrow spacer 56a. The wiping lip 16a can pivot relative to the base body 18a by means of the spacer 50a. The wiping lip 16a of the base body 18a and the spacer 50a extend along the main extension direction 46a of the wiper blade device 10a taken over the entire extension of the wiper blade unit 14a. The wiper blade unit 14a has a constant cross-section ([Fig.2]).

[0036] The base body 18a forms two recesses 20a, 20a' to receive one of the elastic rails 12a, 12a' respectively. The recesses 20a, 20a' extend along the main extension direction 46a of the wiper blade assembly 10a over the entire extension of the base body 18a. The recesses 20a, 20a' have a rectangular cross-section and are delimited on three sides respectively, formed by the base body 18a. The recesses 20a, 20a' are thus delimited by the head blade 52a, The spacer 56a and the base element 54a of the base body 18a. The recesses 20a, 20a' each have an opening through which the recesses 20a, 20a' are open respectively to one side, parallel to the main extension direction 46a of the wiper blade assembly 10a. The recesses 20a, 20a' are provided respectively on opposite sides of the base body 18a. The recesses 20a, 20a' are located with respect to a plane of symmetry of the wiper blade unit 14a which is parallel to the main extension direction 46a of the wiper blade assembly 10a and in particular perpendicular to the vehicle window, on opposite sides of the base body 18a. The openings of the recesses 20a, 20a' are oriented in opposite directions. The openings allow the elastic rails 12a, 12a' to be engaged in the recesses 20a, 20a'.In the installed state of the elastic rails 12a, 12a', the elastic rails 12a, 12a' partially protrude from the openings by projecting out of the recesses 20a, 20a' ([Fig.2]). .

[0037] Furthermore, the base body 18a defines a damping cavity 22a distinct from the recesses 20a, 20a'. The damping cavity 22a is a rectangular volume completely surrounded by the base body 18a in a section perpendicular to the main extension direction 46a. The damping cavity 22a is formed in the base element 54a and extends along the main extension direction 46a over the entire length of the wiper blade unit 14a. The basic element 54a has a bottom wall 58a facing the wiping lip 16a, a top wall 60a facing the head blade 52a, and two side walls 30a, 30a' which thus define the damping cavity 22a in a plane perpendicular to the main extension direction 46a of the wiper blade assembly 10a. The basic body 18a has the two side walls 30a, 30a' which define the damping cavity 22a on each side.The bottom wall 58a, the top wall 60a and the two side walls 30a, 30a' form a hollow rectangle in a plane perpendicular to the main extension direction 46a of the wiper device 10a and this rectangle has, in its middle, the damping cavity 22a. .

[0038] The wiping blade unit 14a comprises two elastic support elements 28a, 28a' on the base body 18a and on opposite sides of the base body 18a; these elements bear respectively between the base body 18a and at least one of the guide spacers 26a, 26a'. The wiping blade unit 14a is symmetrical parallel to the principal extension direction of the wiping blade unit 14a and symmetrical with respect to the wiping direction; thus, the support elements 28a, 28a' are respectively on opposite sides of the plane of symmetry. The support elements 28a, 28a' are respectively provided directly on one of the side walls 30a, 30a' of the base body 18a. The two elastic support elements 28a, 28a' are level on opposite sides, between the base body 18a and one of the respective guide spacers 26a, 26a'. The support elements 28a, 28a' are located with their outer ends directly on the guide spacers 26a, 26a' and their inner ends are directly connected to the base body 18a. The support elements 28a, 28a' are directly connected at their inner ends to the base element 54a. The support elements 28a, 28a' of the wiper blade unit 14a are made as a single piece with the base body 18a. The support elements 28a, 28a' may be made of the same material as the base body 18a or of another material, in particular one that is stronger, more robust, more compressible, or more flexible to ensure greater robustness. This allows the 14a wiper blade unit to be produced, in particular by a multi-component injection process, in particular by a multi-component injection process, in particular a co-extrusion process.

[0039] The support elements 28a, 28a' of the wiping blade unit 14a are formed by two branches 34a, 34a', 36a, 36a' which meet at a point and together form a compressible triangle with a lateral wall 30a, 30a' of the base body 18a. The branches 34a, 34a', 36a, 36a' are formed by spacers which extend along the main extension direction of the wiping blade unit 14a over the entire length of the wiping blade unit 14a.The arms 34a, 34a', 36a, 36a' and the lateral walls 30a, 30a' of the base body 18a, 18a' form a triangular section perpendicular to the main direction of extension of the wiping blade unit 14a; the arms 34a, 34a', 36a, 36a' and the lateral walls 30a, 30a' of the base body 18a form, in section perpendicular to the main direction of extension of the wiping blade unit 14a, each time a triangular cavity 70a, 70a' distinct from the damping cavity 22a. The cavities 70a, 70a' are located on both sides of the damping cavity 22a. The cavities 70a, 70a' serve in particular to give compressibility to the support element 28a, 28a'.

[0040] The guide spacers 26a, 26a' of the deflector unit 24a have, on their inner side, a respective notch 38a, 38a' provided for receiving the tip of the corresponding support element 28a, 28a'. The notches 38a, 38a' are formed by a groove extending along the entire length of the deflector unit 24a. The notches 38a, 38a' prevent the support elements 28a, 28a' from slipping.

[0041] The compressibility and flexibility of the support elements 28a, 28a' exist only in the form of a point load, so that the wiper blade unit 14a has a certain freedom of movement in the longitudinal direction, in order to minimize transient noise. To ensure this even more completely, the inner side of the deflector unit 24a, in particular the guide spacers 26a, 26a', can be made of a material with a very low coefficient of friction and / or be coated.

[0042] Figure 3 shows another embodiment of the invention. Description The following and the drawings are limited to the main differences between the embodiment examples and for components of the same references, reference will be made to the drawings and the description of the previous embodiment example in particular to figures 1 and 2. To distinguish the embodiment examples, the suffix (a) of the references of the first embodiment example according to figures 1 and 2 will be replaced by the suffix (b) for the embodiment example of [Fig.3].

[0043] Figure 3 shows a wiper assembly 10b in a schematic cross-sectional view. The wiper assembly 10b comprises, for example, two elastic rails 12b, 12b'. The wiper assembly 10b also has a wiper blade unit 14b. Furthermore, the wiper assembly 10b has at least one deflector unit 24b.

[0044] The deflector unit 24b has a deflector base body formed on top of a deflector 66b, the lower or underside of which has a housing for elastic rails 68b, for receiving the elastic rails 12b, 12b'. The deflector unit 24b overlaps at least partially a base body 18b of the deflector unit 24b. The deflector unit 24b has two guide spacers 26b, 26b' extending on both sides of the base body 18b. The guide spacers 26b, 26b' are each formed by a rectangular spacer extending along the lower side of the deflector base body parallel to each other and projecting from the deflector base body. The guide spacers 26b, 26b' extend along the main extension direction 46b of the entire deflector unit 24b.

[0045] The deflector unit 24b is a long, slender body with a practically constant cross-section along its entire length. The wiper blade unit 14b has a wiper lip 16b and at least one base body 18b. The base body 18b has a rectangular base element 54b. The wiper lip 16b is rigidly connected to the base body 18b.

[0046] The deflector unit 14b has two elastic support elements 28b, 28b' on the base body 18b, located on opposite sides of the base body 18b. These support elements bear between the base body 18b and one of the guide struts 26b, 26b', respectively. The deflector unit 14b is parallel to the plane of symmetry of the principal extension direction of the deflector unit 14b and extends along a plane of symmetry perpendicular to the wiping direction. The support elements 28b, 28b' are located on opposite sides of the plane of symmetry, respectively. Each support element 28b, 28b' is provided directly on a lateral wall 30b, 30b' of the base body 18b. The two elastic support elements 258b, 28b' are on opposite sides, level, between the base body 18b and one of the respective guide spacers 26b, 26b'.The support elements 28b, 28b' are located with their outer end directly on the guide spacers 26b, 26b' and by their inner end; they . are directly connected to the base body 18b. The support elements 28b, 28b' are directly connected to the base body 54b at their inner ends. The support elements 28b, 28b' of the wiping blade unit 14b are made as a single piece with the base body 18b.

[0047] The support elements 28b, 28b' of the wiping lip unit 14b are formed by a diagonal spacer with its upper end opposite the wiping lip 16b on the base body 18b and its other lower end facing the wiping lip 16b on the guide spacer 26, 26b of the deflector unit 24b. The support elements 28b, 28b' are made by a rectangular spacer with a cross-section perpendicular to the main extension direction of the wiping blade unit 14b. The longest lateral edge of the support elements 28b, 28b' is respectively on the base body 18b and the second longest lateral edge of the support elements 28b; 28b' rests against one of the guide spacers 26b, 26b' of the deflector unit 24b.

[0048] The guide spacers 26b, 26b' of the deflector unit 24b each have, at their free lower end, a support step 32b, 32b' for receiving the respective free end of one of the support elements 28b, 28b'. The support steps 32b, 32b' extend inwards into the receiving area of ​​the wiper blade unit 14b. The support steps 32b, 32b' are formed by a respective rectangular spacer that extends along the main extension direction of the deflector unit 24b over the entire length of this deflector unit 24b. The support elements 28b, 28b' are, by their free end, respectively on the upper side of one of the support steps 32b, 32b'. The support elements 28b, 28b' are with their free end, respectively on the upper side of one of the support steps 32b, 32b' and on the inner side of the guide spacers 26b, 26b'.

[0049] Thus, in conclusion, the invention relates to a windshield wiper device comprising at least one elastic rail 12a, 12a'; 12b, 12b', with a wiper blade unit 14a; 14b having at least one wiper lip 16a; 16b and a wiper base body 18a; 18b provided with a recess 20a; 20b to receive at least the elastic rail 12a, 12a'; 12b, 12b' and a damping cavity 22a; 22b separated from the recess 20a; 20b and a deflector unit 24a; 24b which partially surrounds the wiper base body 18a; 18b of the wiper blade unit 14a; 14b and which has two guide spacers 16a, 16a'; 16b, 16b' extending on both sides of the base body 18a, 18b, wiper blade device characterized in that the wiper blade unit 14a, 14b comprises an elastic support element 28a, 28a'; 28b, 28b' which is provided on the base body 18a; 18b and which bears between the base body 18a; 18b and one of the guide spacers 26a, 26a';26b, 26b'. ;

[0050] According to a characteristic, the deflector unit the deflector unit (14a; 14b comprises two elastic support elements 28a, 28a'; 28b, 28b' on opposite sides of the base body 18a, 18b and which bear respectively between the base body 18a, 18b and at least one of the guide spacers 26a, 26a', 26b, 26b'.

[0051] According to another feature, the base body 18a; 18b comprises two side walls 30a, 30a', 30b, 30b' which delimit on a respective side, the damping cavity 22a; 22b, the support elements 28a, 28a'; 28b, 28b' being provided respectively, directly, on one of the respective side walls 30a, 30a'; 30b, 30b'.

[0052] According to another advantageous feature, the two support elements 28a, 28a'; 28b, 28b' are provided respectively on opposite sides, level between the base body 18a; 18b and one of the respective guide spacers 26a, 26a'; 26b, 26b'.

[0053] According to another advantageous feature, the support element of the wiping blade unit 28a, 28a'; 28b, 28b' of the wiping blade unit 14a, 14b is made in one piece with the base body 18a, 18b.

[0054] According to another advantageous feature, the support element 28b, 28b' of the wiper unit 14b is formed by a diagonal spacer which is the upper end opposite the wiping lip 16b provided on the base body 18b in the lower end turned towards the wiping lip 16b is on the guide spacer 26b, 26b' of the deflector unit 24b.

[0055] According to another advantageous feature, the guide spacer 26b, 26b' of the deflector unit 24b has a support shoulder 32b, 32b' at its respective free lower end, this shoulder being provided to receive at least one support element 28b, 28b'.

[0056] According to another advantageous feature, the support element 28a, 28a' of the wiper blade unit 14a is formed by two branches 34a, 34a', 36a, 36a' ending in a point and which together with a side wall 30a, 30a' of the base body 18a form a compressible triangle.

[0057] According to another advantageous feature, the guide spacers 26a, 26a' of the deflector unit 24a have on the inner side, a notch 38a, 38a' provided to receive the tip of a support element 28a, 28a'.

[0058] NOMENCLATURE OF MAIN ELEMENTS

[0059] (numerical references without alphabetical suffixes)

[0060] 10 Windshield wiper assembly

[0061] 12 Elastic rail

[0062] 14 Wiper blade unit

[0063] 16 Wiping lip

[0064] 18 Basic body

[0065] 22 Damping cavity

[0066]

[0067]

[0068]

[0069]

[0070]

[0071]

[0072]

[0073]

[0074]

[0075]

[0076]

[0077]

[0078]

[0079]

[0080]

[0081]

[0082]

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[0084] 24 Deflector unit 26 Guide spacer 28 Elastic support element 30 Side wall 32 Support element 34, 36 Branches meeting at a point 38 Notch 40 Wiper blade adapter 42, 44 Deflector element 50 Spacer 52 Head blade 54 Rectangular base element 56 Spacer 58 Bottom wall 60 Top wall 62, 64 End cap 66 Deflector 68 Elastic rail housing 70 Triangular cavity

Claims

Demands

1. Wiper assembly comprising at least one elastic rail (12a, 12a'; 12b, 12b'), with a wiper blade unit (14a; 14b) having at least one wiper lip (16a; 16b) and a wiper base body (18a; 18b) having a recess (20a; 20b) for receiving at least the elastic rail (12a, 12a'; 12b, 12b') and a damping cavity (22a; 22b) separate from the recess (20a; 20b) and a deflector unit (24a; 24b) which partially surrounds the wiper base body (18a; 18b) of the wiper blade unit (14a; 14b) and which has two guide spacers (26a, 26a'; 26b, 26b') extending on both sides of the base body (18a, 18b), wiper device characterized in that the wiper blade unit (14a, 14b) has an elastic support element (28a, 28a'; 28b, 28b') provided on the base body (18a; 18b) and which bears between the base body (18a; 18b) and one of the guide spacers (26a, 26a'; 26b, 26b').

2. Wiper blade device according to claim 1, characterized in that the deflector unit (24a; 24b) comprises two elastic support elements (28a, 28a'; 28b, 28b') on opposite sides of the base body (18a, 18b) and which bear respectively between the base body (18a, 18b) and one of the guide spacers (26a, 26a', 26b, 26b').

3. Wiper device according to claim 2, characterized in that the basic body (18a; 18b) comprises two side walls (30a, 30a', 30b, 30b') which delimit on a respective side, the damping cavity (22a; 22b), the support elements (28a, 28a'; 28b, 28b') being provided respectively, directly, on one of the respective side walls (30a, 30a'; 30b, 30b').

4. Wiper blade device according to claim 2, characterized in that the two support elements (28a, 28a'; 28b, 28b') are provided respectively on opposite sides, level between the base body (18a; 18b) and one of the respective guide spacers (26a, 26a'; 26b, 26b').

5. Windshield wiper device according to any one of the preceding claims, characterized in that the support element (28a, 28a' ; 28b, 28b') of the wiper blade unit (14a, 14b) is made in one piece with the base body (18a, 18b).

6. Wiper blade device according to any one of the preceding claims, characterized in that the support element (28b, 28b') of the wiper blade unit (14b) is formed by a diagonal spacer whose upper end is opposite the wiper lip (16b) on the base body (18b) and whose lower end, turned towards the wiper lip (16b), is on the guide spacer (26b, 26b') of the deflector unit (24b).

7. Wiper blade device according to any one of the preceding claims, characterized in that the guide spacer (26b, 26b') of the deflector unit (24b) has a support shoulder (32b, 32b') at its respective free lower end, this shoulder receiving at least one support element (28b, 28b') in support.

8. Wiper device according to any one of claims 1 to 5, characterized in that the support element (28a, 28a') of the wiper blade unit (14a) is formed by two branches (34a, 34a', 36a, 36a') ending in a point and which together form a compressible triangle with a side wall (30a, 30a') of the base body (18a).

9. Wiper blade device according to claim 8, characterized in that the guide spacers (26a, 26a') of the deflector unit (24a) have on the inner side, a notch (38a, 38a') to receive the tip of a support element (28a, 28a').

10. Wiper blade unit of a wiper blade device (10a, 10b) according to any one of the preceding claims.

Images