Adapter for wiper systems

Abstract

The invention relates to an adapter (1) for a wiper system (6), comprising at least a side wall (10) and an upper wall (12), with at least one common edge between the side wall (10) and the upper wall (12), the side wall (10) and the upper wall (12) contributing to defining an interior space of the adapter (1), the adapter (1) comprising a first inner wall (20) and a second inner wall (66) contributing to at least partially defining a receiving area (26) for receiving a connector (8), the adapter (1) comprising at least one receiving housing (32) for receiving an arm and having a rectangular cross-section defined by two main sides (33) and two secondary sides (31), characterised in that a straight line (D) passing through one of the main sides (33) cuts through the receiving area (26) for receiving the connector (8).

Description

Technical Field

[0001] The field of the invention is that of wiper systems for motor vehicles. More specifically, the field of the invention is that of adapters between a windscreen wiper arm and a wiper blade unit in such wiper systems. Background Art

[0002] Motor vehicles are typically equipped with a wiper system for cleaning their glass surfaces, particularly their windshields. Such wiper systems comprise at least a windshield wiper arm and a wiper blade unit driven by the windshield wiper arm. The windshield wiper arm is connected to the vehicle's electric motor, and the wiper blade unit includes at least one wiper blade adapted to contact the glass surface to be wiped. To enable the actuation of the wiper blade unit, an adapter is positioned between the wiper blade unit and the windshield wiper arm. More specifically, the adapter is positioned between the windshield wiper arm and a connector attached to the wiper blade unit. The adapter is then secured to the windshield wiper arm, more specifically, to its free end. This attachment is removable, allowing the wiper blade unit to be replaced if worn.

[0003] In order to provide optimal cleaning of a vehicle's glass surface by a wiper system, the wiper system, and in particular its wiper blade unit, must be pressed against the glass surface to be cleaned. Consequently, there are known devices for assisting in the pressing of the wiper blade unit, such as deflectors placed on the wiper blade unit. These deflectors, when the vehicle is in motion, cause the wiper blade unit to be pressed due to the airflow. However, while this pressing of the wiper blade unit is effective, it is not optimal and could be improved. Summary of the Invention

[0004] The present invention proposes an alternative to existing solutions by positioning the various fastening elements relative to one another in such a way as to optimize the pressing of the wiper blade unit against the vehicle's glass surface.

[0005] In this case, the main object of the present invention is an adapter for fastening a wiper blade unit to an arm of a wiper system, the adapter extending in a longitudinal direction, the adapter being configured to be rotatably mounted on a connector of the wiper blade unit around a rotation axis transverse to the longitudinal direction, the adapter comprising at least one side wall and an upper wall having at least one common edge therebetween, the side wall and the upper wall contributing to defining an interior space of the adapter, the adapter comprising a first inner wall and a second inner wall extending at least partially into the interior space of the adapter and contributing to defining at least a portion of a receiving area for receiving the connector, the adapter comprising at least one receiving accommodating portion for receiving the arm of the wiper system and having a rectangular cross-section defined by two main sides and two secondary sides, characterised in that a straight line cut through one of the main sides is used to receive the receiving area of the connector.

[0006] The wiper blade unit and the arm form part of a vehicle wiper system for at least partially cleaning a glass surface of the vehicle. The wiper system further comprises an arm that is driven in rotation by an electric motor of the vehicle and that provides a rotational movement of the wiper blade unit, which is fixed to the arm via an adapter and a connector, resting against the glass surface so that a blade carried by the wiper blade unit clears raindrops from the glass surface and / or solid debris deposited on the surface.

[0007] The receiving receptacle extends in the interior space of the adapter so that a straight line passing through one of the main sides of the receiving receptacle also extends into the receiving area. It will be appreciated that although this straight line extends into at least a portion of the receiving area, it does not pass through the receiving area along a main dimension.

[0008] For example, the straight line is also inclined relative to the main plane of extension of the first inner wall, the second inner wall and / or the side wall. In other words, the straight line is at least secant relative to the main plane of extension of the first inner wall, the second inner wall and / or the side wall.

[0009] This clever arrangement of the receiving housing relative to the receiving area makes it possible to reduce the overall dimensions of the adapter components, even those located within the adapter's interior, with the receiving housing being positioned closer to the adapter than in the prior art. This also optimizes the pressure of the wiper blade unit on the glass surface, stabilizing its position relative to the arm and reducing disturbances caused by air currents.

[0010] For its part, the receiving area is delimited laterally by the first and second inner walls, longitudinally by the two side walls, and finally vertically by the upper wall and the opening defined by the free edges of the inner and side walls. It should be understood that the straight line thus passes through the receiving area defined by the set of parts that delimit it.

[0011] According to an optional feature of the invention, a line passing through one of the main sides is secant to the axis of rotation of the adapter within the receiving area.

[0012] According to an optional feature of the invention, the adapter is configured to be rotatably mounted on the connector by means of a rotation device, the straight line passing through one of the main edges cutting one of the elements of the rotation device.

[0013] According to an optional feature of the invention, the side wall and the upper wall each have a free edge and a common edge shared by the side wall and the upper wall, and when viewed in a sectional plane perpendicular to the longitudinal direction, the adapter has a triangular cross-section, and the triangular cross-section is defined by the free edges of the side walls, the free edges of the upper wall, and the common edge between the side walls and the upper wall, and when viewed in a sectional plane perpendicular to the longitudinal direction, the upper wall is curved between the common edge and its free edge.

[0014] When the wiper system is positioned on a vehicle, the free edge of the upper wall is also the edge positioned across the airflow that flows over the upper wall. In other words, when the wiper system is mounted on said vehicle, the free edge of the upper wall is the most forward edge relative to the vehicle. It should therefore be understood that when the wiper system is mounted on a vehicle, the free edge of the side wall and the side wall itself are located to the rear of the wiper system, between the glass surface and the free edge of the upper wall, relative to the trajectory of the airflow.

[0015] According to another optional feature of the invention, the adapter comprises at least one reinforcement member extending between the first inner wall and the side walls and / or upper wall.

[0016] According to another optional feature of the invention, the receiving housing is defined by a first portion comprising the sleeve.

[0017] According to another optional feature of the invention, the receiving housing is defined by a second portion opening into the interior space.

[0018] According to another optional feature of the invention, the receiving receptacle is defined by a third portion comprising an opening formed in the reinforcement member.

[0019] According to another optional feature of the invention, the adapter comprises at least one reinforcement extending between the first inner wall and the side walls and / or upper wall, the receiving receptacle being defined by a first portion comprising a sleeve, a second portion leading to the interior space, and a third portion comprising an opening formed in the reinforcement.

[0020] The sleeve comprises a wall contributing to delimiting at least a portion of the first portion of the receiving housing, said wall extending longitudinally in the form of a hollow cylinder.

[0021] The opening formed in the reinforcement has an overall shape similar to the cross section of the sleeve when viewed in a plane perpendicular to the longitudinal direction. In addition, the opening formed in the reinforcement and the sleeve are aligned in a direction parallel to the longitudinal direction.

[0022] According to another optional feature of the invention, the reinforcement member extends perpendicularly relative to the first inner wall and / or the side wall.

[0023] According to another optional feature of the invention, the adapter includes a first series of reinforcements extending between the upper wall, the side walls and the first inner wall, and a second set of reinforcements extending between the upper wall and the second inner wall, which help define the receiving area, which extends between the first series of reinforcements and the second series of reinforcements.

[0024] The receiving area is defined, for example, by a first inner wall and a second inner wall extending independently and parallel to the first inner wall.

[0025] According to another optional feature of the invention, the receiving receptacle is laterally offset relative to the receiving area. This lateral offset optimizes the compactness of the adapter.

[0026] According to another optional feature of the invention, the position of the receiving receptacle is offset relative to the position of the receiving area along a transverse direction, which is perpendicular to the longitudinal direction.

[0027] According to another optional feature of the invention, the receiving receptacle is located in the interior space between the receiving area and the side wall.

[0028] According to another optional feature of the invention, the straight line passing through one of the main sides intersects the axis of rotation of the adapter at an angle of 20° to 60°, preferably 30° to 50°, even more preferably 35° to 45°.

[0029] According to another optional feature of the invention, the adapter comprises a locking device for longitudinally fixing the adapter relative to the arm of the wiper system, the locking device comprising at least one push member and a locking member, the push member being located within the contour of the upper wall and the locking member extending at least partially into a receiving receptacle for receiving the arm.

[0030] The invention also relates to a connection device for a wiper blade unit, comprising at least one connector and an adapter according to any of the above features, the connector being rotatably mounted about an axis of rotation of the adapter by means of rotation means.

[0031] The invention also proposes a wiper blade unit comprising at least one connecting device according to any of the above features, or an adapter according to any of the above features.

[0032] Finally, the invention relates to a wiper system comprising at least one arm comprising at least one rod housed in a receiving portion of an adapter and a wiper blade unit according to any of the preceding claims. The term "rod" is used herein to designate a solid elongated element having, for example, a rectangular cross-section when viewed in a plane perpendicular to the main direction of extension of the rod.

[0033] According to another optional feature of the invention, at least one end of the rod is shaped complementary to the receiving housing of the adapter, the rod having a cutout interacting with locking means for longitudinally locking the adapter in position on the rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Other characteristics, details and advantages of the invention will become more apparent on the one hand from a reading of the following description and on the other hand from a number of embodiments provided by way of non-limiting indication with reference to the accompanying schematic drawings, in which:

[0035] Figure 1 is a perspective view of a wiper system according to the invention, the wiper system comprising at least an arm, a wiper blade unit and an adapter;

[0036] Figure 2 yes Figure 1 a top perspective view of the illustrated adapter;

[0037] Figure 3 yes Figure 1 a bottom perspective view of the illustrated adapter;

[0038] Figure 4 yes Figure 1 Cross section of the adapter shown;

[0039] Figure 5 yes Figure 1 A bottom perspective view of the adapter and arm is shown.

[0040] The features, variants and different embodiments of the present invention can be combined with one another in various combinations, as long as they are not mutually incompatible or mutually exclusive. In particular, variants of the present invention can be envisaged that only include a selection of the features described below independently of the other features described, if this selection of features is sufficient to provide technical advantages and / or distinguish the present invention from the prior art.

[0041] In the figures, elements common to several figures retain the same reference numerals. DETAILED DESCRIPTION

[0042] In the detailed description that follows, the terms "longitudinal", "transverse" and "vertical" refer to the orientation of the wiper system according to the invention. The longitudinal direction is the main extension direction of the adapter according to the invention, parallel to the longitudinal axis L in the reference system L, V, T shown in the figures. The transverse direction is the main extension direction of the reinforcement, parallel to the transverse axis T in the reference system L, V, T, which is perpendicular to the longitudinal axis L. Finally, the vertical direction is the direction parallel to the vertical axis V in the reference system L, V, T, which is perpendicular to the longitudinal axis L and the transverse axis T.

[0043] Figure 1 A wiper system 6 is shown, which is configured for cleaning a glass surface of a vehicle, such as a windshield, thereby improving the driver's visibility of the road ahead of the vehicle, for example in rainy weather, or for removing solid debris adhering to the glass surface. The wiper system 6 extends mainly along a longitudinal direction L and comprises at least a wiper arm 4, which carries a wiper blade unit 2 at one end and is connected at another end opposite with respect to the longitudinal direction L of the vehicle.

[0044] Both the arm 4 and the wiper blade unit 2 extend primarily in the longitudinal direction L of the wiper system 6. More precisely, the arm 4 includes a connector for securing the arm 4 of the vehicle to a rod 60 extending from the connector to one end of the arm 4. The term "rod" refers to a solid element extending in the longitudinal direction L. The rod 60 herein has a rectangular cross-section when viewed in a plane perpendicular to the longitudinal direction L. However, rods 60 having a disc-shaped, triangular, or other cross-section are also within the scope of the present invention.

[0045] Furthermore, the wiper blade unit 2 is particularly suitable for being driven in rotation by an arm 4 which bears against the glass surface of the vehicle and which is itself driven in rotation by a motor not shown, for example an electric motor carried on board the vehicle.

[0046] In order to connect the wiper blade unit 2 to the end of the arm 4, the wiper blade unit 2 comprises a connection device 56 comprising at least a connector 8 carrying a wiper blade 68 of the wiper blade unit 2 and an adapter 1 rotatably mounted on the connector 8 and capable of interacting with the end of the arm 4. It should be noted that it should be understood that the wiper blade of the wiper blade unit 2 is intended to come into contact with the glass surface of the vehicle. Furthermore, the connector 8 is configured to directly or indirectly carry the wiper blade.

[0047] The rotation of the adapter 1 and the connector 8 is provided by a rotation device, which rotation takes place about a rotation axis R substantially parallel to the transverse direction T. A more detailed description of the rotation device is given in a subsequent part of the description.

[0048] from Figure 2 and 3 As can be seen more particularly in FIG, the adapter 1 extends mainly along a longitudinal direction L. The adapter 1 comprises at least a side wall 10 and an upper wall 12 , each having a free edge 14 , 16 and a common edge 18 shared by the side wall 10 and the upper wall 12 .

[0049] The side wall 10 extends mainly in a plane parallel to the longitudinal direction L and the vertical direction V. Here, the side wall 10 has a free edge 14 and a common edge 18 with the upper wall 12 , which joins the side wall 10 and the upper wall 12 , which each extend in a separate plane.

[0050] The upper wall 12 also has a free edge 16 and extends between its free edge 16 and a common edge 18, with Figure 4 It should be understood here that, seen from a plane perpendicular to the longitudinal direction L, the upper wall 12 has a curved profile between the common edge 18 and its free edge 16, which is inscribed in a circle.

[0051] In this configuration, the adapter 1 has a triangular cross-section, as seen from a plane perpendicular to the longitudinal direction L, the triangle of the cross-section being defined by the free edge 14 of the side wall 10, the free edge 16 of the upper wall 12, and the common edge 18 between the side wall 10 and the upper wall 12. Thus, an interior space of the adapter 1 can be defined, which is at least partially delimited by the side wall 10 and the upper wall 12. This interior space extends mainly in the form of a right prism with a triangular base.

[0052] In addition, if Figures 3 to 5 , the adapter 1 comprises a first inner wall 20 extending at least partially in the interior space of the adapter 1. More precisely, the first inner wall 20 extends in the interior space from the upper wall 12 in a plane substantially parallel to the longitudinal direction L and the vertical direction V. It should be understood that the first inner wall 20 extends substantially parallel to the side wall 10.

[0053] According to the present invention, the first inner wall 20 helps to at least partially define a receiving area 26 for receiving the connector 8. When the adapter 1 is mounted on the connector 8, the connector 8 is at least partially housed in the receiving area 26.

[0054] In addition, if Figures 3 to 5As shown in greater detail in FIG, adapter 1 includes a plurality of walls that help define receiving area 26, including, in particular, first inner wall 20. More specifically, these walls extend to form a rectangular shape, extending in planes that are substantially perpendicular to the planes in which adjacent walls extend. Thus, it should be understood that adapter 1 includes a second inner wall 66 extending parallel to first inner wall 20, and two side walls 70 extending perpendicular to and between longitudinal wall 66 and inner wall 20.

[0055] It may also be defined that the receiving area 26 is delimited laterally between the first and second inner walls 20 , 66 , longitudinally between the side walls 70 and vertically by an opening 67 defined by the side walls 70 and the free edges of the upper wall 12 and the inner walls 20 , 66 .

[0056] Furthermore, when mounted on the adapter 1, the connector 8 is at least partially positioned in the receiving area 26 of the adapter 1. In other words, the connector 8 is at least partially positioned between the first and second inner walls 20, 66, and between the side walls 70.

[0057] As mentioned above, the adapter 1 is rotatably mounted on the connector 8 by means of a rotation device 58. The rotation device comprises a plurality of interacting elements, which are located on the one hand on the connector 8 and on the other hand on the adapter 1.

[0058] For example, Figure 3 and Figure 4 As shown, the adapter 1 comprises, on the one hand, a male element 73 on the second inner wall 66 , which is configured for interacting with a female element of the connector 8 , and, on the other hand, a female element 75 for interacting with the male element of the connector 8 .

[0059] More precisely, the male element takes the form of a projection with a stud, and the female element takes the form of an opening in which the stud is intended to be driven in rotation about the axis of rotation R. The projection of the adapter 1 extends, for example, in a plane coinciding with the plane of extension of the second inner wall 66 and is delimited from said second inner wall 66 by two grooves extending along the vertical direction V. In this configuration, the projection is elastically deformed by being movable about a rotation direction parallel to the longitudinal direction L, thereby enabling the adapter 1 to be mounted on the connector 8.

[0060] Furthermore, the adapter 1 comprises at least one reinforcement 52 extending between the first inner wall 20 and the side wall 10 and / or the upper wall 12. Advantageously, as Figure 3 and 5As shown, the adapter 1 includes a first series of reinforcements 52a extending between the upper wall 12, the side walls 10 and the first inner wall 20, and a second series of reinforcements 52b extending between the upper wall 12 and the second inner wall 66, which help define the receiving area 26, which extends between the first series of reinforcements 52a and the second series of reinforcements 52b.

[0061] The reinforcements 52 of the first series of reinforcements 52 a are positioned between the receiving area 26 , the upper wall 12 and the side wall 10 , aligned with one another along a direction parallel to the longitudinal direction L. Furthermore, each reinforcement 52 of the first series of reinforcements 52 a advantageously extends in a plane parallel to the plane of extension of the reinforcements 52 of said first series of reinforcements 52 a.

[0062] The reinforcements 52 of the second series of reinforcements 52 b are positioned between the receiving area 26 and the upper wall 12 , aligned with one another along a direction parallel to the longitudinal direction L. Moreover, each reinforcement 52 of the second series of reinforcements 52 b advantageously extends in a plane parallel to the plane of extension of the reinforcements 52 of said second set of reinforcements 52 b.

[0063] Preferably, each reinforcement 52 of the first series of reinforcements 52a and of the second series of reinforcements 52b extends advantageously in a plane parallel to the plane of extension of the reinforcements 52 of said first series of reinforcements 52a and of said second set of reinforcements 52b.

[0064] Furthermore, the reinforcements 52 of the first and second series of reinforcements 52 a , 52 b extend perpendicularly to the first inner wall 20 and / or the side wall 10 .

[0065] The adapter 1 also comprises a receiving housing 32 for receiving the rod 60 of the arm 4 .

[0066] like Figure 3 and Figure 5 As shown, receiving housing 32 is defined here by a first portion in the form of a sleeve 64, a second portion opening into the interior space, and a third portion in the form of an opening 54 formed in a reinforcement 52 of the first series of reinforcements 52a. During assembly, adapter 1 is mounted on arm 4 such that the free end of rod 60 first passes through the first portion, then through the second portion, and finally through the third portion. It should be understood that opening 54 is intended to receive at least a portion of rod 60 of arm 4, in particular the free end of rod 60 of arm 4.

[0067] The sleeve 64 includes a wall that contributes to delimiting at least a portion of the first portion of the receiving housing 32 , the wall extending longitudinally in the form of a hollow cylinder.

[0068] The opening 54 formed in the reinforcement 52 has an overall shape similar to the cross-section of the sleeve 64 when viewed from a plane perpendicular to the longitudinal direction.

[0069] In this arrangement, more specifically Figure 5 As shown, the opening 54 of the reinforcement 52 and the sleeve 64 are aligned along a direction parallel to the longitudinal direction L, so that the rod 60 of the arm 4 extends along the longitudinal direction L through the sleeve 64 and the opening 54 of the reinforcement 52 .

[0070] Furthermore, the reinforcement member 52 in which the opening 54 for receiving the free end of the rod 60 is formed is the proximal reinforcement member 52 relative to the sleeve 64 in the first series of reinforcement members 52 a .

[0071] Advantageously, at least two reinforcement members 52 of the first series of reinforcement members 52 a proximal to the sleeve 64 each include an opening 54 that helps define at least a portion of the receiving receptacle 32 .

[0072] According to the present invention, Figure 4 As shown, when viewed in a cross section inscribed in a plane perpendicular to the longitudinal direction L, the receiving receptacle 32 has an overall rectangular shape with two main sides 33 that are larger than the other two secondary sides 31, and a straight line D extending along one of the two main sides 33 of the rectangular shape of the receiving receptacle 32 cuts through the receiving area 26.

[0073] The receiving receptacle 32 extends in a main extension plane E parallel to the longitudinal direction L and the straight line D, visible through the center of the secondary side 31 of said receiving receptacle 32 , which extends through the receiving region 26 .

[0074] In other words, the receiving housing 32 extends in the interior space of the adapter 1 such that a straight line D extends along one of the two main sides 33, passing through the receiving area 26, while a main extension plane E passing through the center of the secondary side 31 of the receiving housing 32 extends into both the receiving housing 32 and the receiving area 26. It will be understood that the straight line D and the main extension plane E extend into at least a portion of the receiving area 26, but do not pass through the receiving area 26 along a main dimension of said receiving area 26.

[0075] For example, the straight line D may be defined as being inclined relative to the main extension plane of the first inner wall 20 and / or the side wall 10. In other words, the straight line D is at least secant relative to the main extension plane of the first inner wall 20 and / or the side wall 10.

[0076] For example, the straight line D intersects the rotation axis R of the adapter 1 in the receiving area 26. In another example, the straight line D intersects one of the elements of the rotation device 58 of the adapter 1, such as the male element 73 on the second inner wall 66 of the adapter or the female element 75 for interacting with the male element of the connector 8.

[0077] like Figures 3 to 5 As shown, the receiving receptacle 32 is laterally offset relative to the receiving area 26 . In other words, the position of the receiving receptacle 32 is offset relative to the receiving area 26 in the transverse direction T. The position of the receiving receptacle 32 is also offset relative to the receiving area 26 in the vertical direction T.

[0078] More precisely, the receiving receptacle 32 is closer to the side wall 10 than the receiving area 26. In other words, the receiving receptacle 32 is located between the receiving area 26 and the side wall 10. More precisely, the receiving receptacle 32, the common edge 18, and the receiving area 26 are aligned along a direction parallel to the straight line D, with the receiving receptacle 32 located between the common edge 18 and the receiving area 26.

[0079] Furthermore, the main extension plane E of the receiving housing 32 intersects the plane containing the axis of rotation R and the longitudinal direction at an angle of 20° to 60°, preferably 30° to 50°, even more preferably 35° to 45°. Figure 3 and 5 As shown, the adapter 1 comprises a locking device 22 for longitudinally fixing the adapter 1 relative to the arm 4 of the wiper system 6, the locking device 22 comprising at least one push member 28 inscribed in the profile of the upper wall 12 and a locking member 30 extending at least partially into a receiving housing 32 for receiving the arm 4. The push member 28 extends in the profile of the upper wall 12 and is movable from the receiving housing 32 towards the first inner wall 20 of the adapter 1.

[0080] like Figure 5 As shown, at least the free end of the rod 60 has a shape complementary to the receiving housing 32 of the adapter 1, the rod 60 having a cutout 62 that interacts with the locking means 22 and is used to longitudinally lock the position of the adapter 1 on the rod 60. It should be understood that the free end is positioned in the cutout 62 of the rod 60, thereby longitudinally locking the rod 60 in the receiving housing 32.

[0081] It will be understood that in order to unlock the position of the adapter 1 on the arm 4, the locking means 22 are pivoted about the pivoting direction until the limiting means 24 come into contact with the first internal wall 20. This pivoting is sufficient to unlock the position of the adapter 1 relative to the arm 4 while limiting the risk of breaking the housing of the locking means 22.

[0082] However, the invention is not limited to the devices and configurations described and illustrated herein, but also extends to any equivalent devices and configurations, as well as any technically operable combination of these devices.

Claims

1. An adapter (1) for fastening a wiper blade unit (2) to an arm (4) of a wiper system (6), said adapter (1) extending in a longitudinal direction (L), said adapter (1) being configured to be rotatably mounted on a connector (8) of the wiper blade unit (2) about an axis of rotation (R) transverse to said longitudinal direction (L), said adapter (1) comprising at least a side wall (10) and an upper wall (12), said side wall (10) and said upper wall (12) having at least one common edge (18) between them, said side wall (10) and said upper wall (12) contributing to defining an interior space of said adapter (1), said The adapter (1) comprises a first inner wall (20) and a second inner wall (66), the first inner wall (20) and the second inner wall (66) extending at least partially in the inner space of the adapter (1) defined by the side wall (10) and the upper wall (12) and at least partially transversely delimiting a receiving area (26) for receiving the connector (8), the adapter (1) comprising at least one receiving housing (32) for receiving the arm (4) of the wiper system (6) and having a rectangular cross-section defined by two main sides (33) and two secondary sides (31), characterized in that A straight line (D) passing through one of the main sides (33) cuts the receiving area (26) for receiving the connector (8), The adapter comprises at least one reinforcement member (52) extending between the first inner wall (20) and the side wall (10) and / or the upper wall (12), the receiving portion (32) being defined by a first portion comprising a sleeve (64), a second portion leading to the interior space, and a third portion comprising an opening (54) formed in the reinforcement member (52).

2. The adapter (1) according to claim 1, wherein The side wall (10) and the upper wall (12) each have a free edge (14, 16) and a common edge (18) between the side wall (10) and the upper wall (12), the adapter (1) having a triangular cross-section when viewed in a sectional plane perpendicular to the longitudinal direction (L), the cross-section being defined by the free edge (14) of the side wall (10), the free edge (16) of the upper wall (12), and the common edge (18) between the side wall (10) and the upper wall (12), the upper wall (12) being curved between the common edge (18) and its free edge (16) when viewed in a sectional plane perpendicular to the longitudinal direction (L).

3. The adapter (1) according to claim 1 comprises a first series of reinforcements (52a) extending between the upper wall (12), the side wall (10) and the first inner wall (20), and a second series of reinforcements (52b) extending between the upper wall (12) and the second inner wall (66), which help to define the receiving area (26), and the receiving area (26) extends between the first series of reinforcements (52a) and the second series of reinforcements (52b).

4. The adapter (1) according to any one of claims 1 to 3, wherein: The receiving receptacle (32) is laterally offset relative to the receiving region (26).

5. The adapter (1) according to any one of claims 1 to 3, wherein The receiving receptacle (32) is positioned in the interior space between the receiving area (26) and the side wall (10).

6. The adapter (1) according to any one of claims 1 to 3, wherein: The straight line (D) passing through one of the main sides (33) is secant to the axis of rotation (R) of the adapter (1) in the receiving area (26).

7. The adapter (1) according to any one of claims 1 to 3 comprises a locking device (22) for longitudinally fixing the adapter (1) relative to the arm (4) of the wiper system (6), the locking device (22) comprising at least one pushing member (28) and a locking member (30), the pushing member (28) being inscribed within the contour of the upper wall (12), and the locking member (30) extending at least partially into the receiving portion (32) for receiving the arm (4).

8. A connection device (56) for a wiper blade unit (2), comprising at least a connector (8) and an adapter (1) according to any of the preceding claims, the connector (8) being rotatably mounted around the axis of rotation (R) of the adapter (1) by means of a rotation device (58).

9. A wiper blade unit (2) comprising at least a connecting device (56) according to claim 8, or an adapter (1) according to any one of claims 1 to 4.

10. A wiper system (6) comprising at least an arm (4) and a wiper blade unit (2) according to claim 9, said arm (4) comprising at least one rod (60) housed in said receiving housing (32) of said adapter (1).

11. The wiper system (6) according to claim 10, wherein At least the free end of the rod (60) has a shape complementary to the receiving housing (32) of the adapter (1), and the rod (60) has a cutout (62) that interacts with a locking device (22) for longitudinally locking the position of the adapter (1) on the rod (60).

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