Adapter for wiper system

Abstract

The invention relates to an adapter (14) for attaching a wiper blade to an arm of a wiper system, the adapter (14) extending along a longitudinal direction (L), the adapter (14) being configured to be rotatably mounted on a connector of the wiper blade, the adapter (14) comprising a locking device (42) intended to block the adapter (14) longitudinally relative to the arm, the adapter (14) comprises a front portion (14a) and a rear portion (14b) delimited from each other by a plane (P) perpendicular to the longitudinal direction (L) and passing through the locking device (42), the locking device (42) comprising at least one transverse wall arranged in the rear portion (14b) of the adapter (14), the adapter (14) comprising a protrusion extending between the transverse wall of the locking device (42) and an element of the rear portion (14b) of the adapter (14).

Description

Technical Field

[0001] The present invention relates to the field of wiper systems for motor vehicles. More specifically, the present invention relates to the field of adapters positioned between the wiper arm and the wiper of such a wiper system. Background Art

[0002] Motor vehicles are generally equipped with a wiper system for cleaning their glass surfaces, in particular their windshields. Such a wiper system includes at least one wiper arm and a wiper driven by the wiper arm. The wiper arm is connected to an electric motor of the vehicle, and the wiper includes at least one wiper blade adapted to come into contact with the glass surface to be wiped. In order to be able to drive the wiper, an adapter is arranged between the wiper and the wiper arm. More specifically, the adapter is arranged between the wiper arm and a connector attached to the wiper. The adapter is then fixed to the wiper arm by a locking device, more specifically to the free end of the wiper arm, and this engagement can be released so as to allow the replacement of the wiper when it is worn.

[0003] In order to optimize the cleaning of the vehicle glass surface by the wiper system, the wiper system, and in particular the wiper, must bear against the glass surface to be cleaned. Thus, devices are known that help the wiper to bear against the surface, such as deflectors located on the wiper or formed on the adapter, which, when the vehicle is in motion, cause the wiper to bear against the surface by the action of the air flow.

[0004] The operation of the wiper system, i.e., driving the wiper against the glass surface by the wiper arm, also causes a phenomenon in which the locking device of the adapter pivots relative to the adapter body. In other words, when the wiper rotates against the glass surface, the locking device of the adapter is subjected to a force that exerts a pulling force on the locking device. This pivoting of the locking device causes premature wear of the locking device of the adapter, which is distorted under the action of the pivoting. Over time, it may break while the wiper system is operating and cause the wiper to detach from the wiper arm.

[0005] Therefore, it should be understood that there is a need to solve the above problem, which can cause accidents to the driver of a vehicle including a wiper system and other road users who may be hit by the wiper released in this way.

[0006] Therefore, an object of the present invention is to provide an adapter whose locking device can only pivot to a limited extent to reduce the risk of separation of the wiper from the wiper arm. Summary of the Invention

[0007] The main subject of the present invention is an adapter for fixing a wiper to an arm of a wiper system, the adapter extending along a longitudinal direction, the adapter being configured to be mounted on a connector of the wiper and being able to rotate about a rotation axis transverse to the longitudinal direction, the adapter including a locking device which is intended to fix the adapter longitudinally relative to the arm, the adapter including a front part and a rear part delimited from each other by a plane perpendicular to the longitudinal direction and passing through the locking device, the locking device including at least one transverse wall which extends transversely to the longitudinal axis and is provided in the rear part of the adapter, the locking device being mounted so as to be able to pivot about an inclined axis parallel to the longitudinal direction, the adapter being characterized in that it includes a projection extending between the transverse wall of the locking device and an element of the rear part of the adapter.

[0008] The wiper and the arm form part of a wiper system of a vehicle for at least partially cleaning a glass surface of the vehicle. Thus, the wiper system includes an arm which is driven to rotate by an electric motor of the vehicle and provides the rotational movement of the wiper, the wiper being rigidly connected to the arm via an adapter and a connector and bearing against the glass surface so that the wiper blade rubber held by the wiper removes raindrops and / or solid debris deposited on the glass surface.

[0009] By fixing the adapter to the arm, the locking device also helps to fix the adapter to the arm. By tilting, the locking device allows the adapter to be mounted on the arm and / or removed from the arm. In the rest position, the locking device connects the adapter to the wiper arm at least in terms of translational movement.

[0010] The projection extending between the transverse wall of the locking device and the element of the rear part of the adapter has a beneficial effect because it forms a stop for limiting the pivoting of the locking device about an axis perpendicular to the longitudinal direction of the adapter and perpendicular or generally perpendicular to the upper wall of the adapter, so that the locking device is not damaged. This limits the risk of separation between the adapter and the wiper arm.

[0011] According to a feature of the present invention, the adapter includes at least a side wall and an upper wall which contribute to defining an internal volume of the adapter, the adapter including at least one guiding channel for receiving the arm and at least partially extending in the internal volume of the adapter.

[0012] The guiding channel in particular forms part of a recess for receiving the arm in the adapter, the recess extending longitudinally in the internal volume of the adapter. More specifically, the receiving recess extends in the front part and the rear part of the adapter, in particular together with the guiding channel which extends in the rear part of the adapter.

[0013] According to a feature of the present invention, the guiding channel has a first longitudinal end and a second longitudinal end. The arm is intended to enter the channel through the first longitudinal end, and the second longitudinal end is adjacent to the transverse wall of the locking device. A protrusion is formed between the transverse wall of the locking device and the second longitudinal end of the guiding channel.

[0014] It should be understood that the second longitudinal end of the guiding channel constitutes an element of the rear part of the adapter.

[0015] According to a feature of the present invention, the protrusion is integral with the transverse wall of the locking device.

[0016] According to an example of the present invention, the locking device includes a thrust member and a fixing member. The fixing member fixes the arm in the receiving recess of the adapter and extends at least partially in the longitudinal direction of the adapter towards the guiding channel. Thus, in this example of the present invention, the transverse wall of the locking device forms a part of the fixing member.

[0017] According to a variant of the present invention, the protrusion is integral with an element of the rear part of the adapter.

[0018] According to this variant of the present invention, the protrusion is integral with the second longitudinal end of the guiding channel that forms an element of the rear part of the adapter.

[0019] According to a feature of the present invention, the protrusion includes at least one contact surface that extends at least partially towards the transverse wall of the locking device or an element of the rear part of the adapter. The longitudinal distance between the contact surface and the transverse wall or the rear part element is between 0.1 mm and 1 mm.

[0020] This longitudinal distance allows for the maximum and controlled pivoting of the locking device relative to the adapter, and such rotation will not cause damage to the locking device. The longitudinal distance is intercepted along a straight line parallel to the longitudinal direction of the adapter.

[0021] According to a feature of the present invention, the guiding channel includes at least one retaining wall for retaining the arm in the vertical direction of the adapter, and the protrusion extends in the longitudinal continuation of the retaining wall.

[0022] According to a feature of the present invention, the retaining wall extends from the first longitudinal end to the second longitudinal end of the guiding channel.

[0023] According to a feature of the present invention, the shape of the protrusion matches the shape of the retaining wall of the guiding channel in the longitudinal direction of the adapter.

[0024] According to a feature of the present invention, the retaining wall of the guiding channel includes a transverse side surface, and the transverse edge of the protrusion extends in the same plane as the transverse side surface.

[0025] According to a feature of the present invention, the retaining wall includes at least one support surface intended to come into contact with an arm positioned in the guide channel, and the projection includes a support surface that extends in the same plane as the support surface of the retaining wall.

[0026] The present invention also relates to a connection device for a wiper, at least including a connector and an adapter according to any one of the above features, the connector being mounted so as to be able to rotate about a rotation axis by means of a rotation device.

[0027] The present invention also relates to a wiper, which at least includes a connection device according to the above features or an adapter according to any one of the above features.

[0028] The present invention also provides protection for a wiper system, which at least includes a wiper arm and a wiper according to the above features, the arm including at least one rod received in the guide channel of the adapter.

[0029] According to a feature of the present invention, at least one end of the rod has a shape complementary to the guide channel of the adapter, and the rod has a notch that cooperates with a locking device to longitudinally fix the position of the adapter on the rod. Description of the Drawings

[0030] Other features, details, and advantages of the present invention will become more apparent upon reading the following description and studying the multiple exemplary embodiments given by way of non-limiting indication with reference to the accompanying drawings, in which:

[0031] Figure 1 is a perspective view of a wiper system according to the present invention, the wiper system at least including an arm, a wiper, and an adapter;

[0032] Figure 2 is Figure 1 a top perspective view of the adapter shown;

[0033] Figure 3 is Figure 1 a bottom perspective view of the adapter shown;

[0034] Figure 4 is Figure 1 a close-up view of the guide channel of the adapter in, which can at least partially accommodate the arm of the wiper system;

[0035] Figure 5 is Figure 1 a close-up view of the projection of the adapter in. Detailed Description of the Invention

[0036] The features, variations, and various embodiments of the present invention can be combined with each other in various combinations, provided that they are not mutually incompatible or mutually exclusive. In particular, variations of the present invention can be envisaged that include only a selection of the following features, separated from the other features described, provided that such a selection of features is sufficient to confer a technical advantage and / or to distinguish the present invention from the prior art.

[0037] In the drawings, elements common to multiple drawings have the same reference numerals.

[0038] In the following detailed description, the terms "longitudinal", "transverse", and "vertical" refer to the orientation of the wiper system and adapter according to the present invention. The longitudinal direction corresponds to the main elongation direction of the adapter, and this longitudinal direction is parallel to the longitudinal axis L of the three-sided body L, V, T shown in the figure. The transverse direction is parallel to the transverse axis T of the coordinate system L, V, T, and this transverse axis T is perpendicular to the longitudinal axis L. Finally, the vertical direction corresponds to the direction parallel to the vertical axis V of the coordinate system L, V, T, and this vertical axis V is perpendicular to the longitudinal axis L and the transverse axis T.

[0039] Figure 1 A wiper system 1 is shown, which is configured to clean the glass surface of a vehicle, such as a windshield, so as to improve the driver's view of the road ahead of the vehicle, for example in rainy weather, or to remove solid debris adhering to the glass surface. The wiper system 1 mainly extends along the longitudinal direction L, and at least includes a wiper arm 2, which carries a wiper 4 at one end and is connected at the other opposite end with respect to the longitudinal direction L of the vehicle.

[0040] Both the arm 2 and the wiper 4 mainly extend in the longitudinal direction L of the wiper system 1. More specifically, the arm 2 includes a connecting body for fixing the arm 2 to the vehicle, and a rod 6 extending from the connecting body to one end of the arm 2. "Rod" is understood to mean a solid element extending in the longitudinal direction L. In this case, when viewed from a plane perpendicular to the longitudinal direction L, the rod 6 has a rectangular cross-section. However, rods with a disc-shaped, triangular, or other cross-section do not depart from the scope of the present invention.

[0041] In addition, the wiper 4 is specifically designed to be rotated by the arm 2 against the glass surface of the vehicle, and the arm 2 itself is rotated by a motor (not shown), such as an electric motor on the vehicle.

[0042] To connect the wiper 4 to the end of the arm 2, the wiper 4 includes a connecting device 8 and an adapter 14. The connecting device 8 includes at least one connector 10 that supports the wiper blade 12 of the wiper 4. The adapter 14 is mounted to be rotatable on the connector 10, and the adapter 14 can cooperate with the end of the arm 2. It will be specifically understood that the wiper blade 12 of the wiper 4 is intended to contact the glass surface of the vehicle. In addition, the connector 10 is configured to directly or indirectly support the wiper blade 12.

[0043] The adapter 14 and the connector 10 are rotated by Figure 3 the rotating device 16 shown in the middle part, and the rotation is performed about a rotation axis R that is substantially parallel to the transverse direction T. A more detailed description of the rotating device 16 will be provided later in the specification.

[0044] As Figure 2 and 3 more clearly shown, the adapter 14 mainly extends along the longitudinal direction L. The adapter 1 at least includes a side wall 18 and an upper wall 20, and the side wall 18 and the upper wall 20 each have a free edge 22, 24 and an edge 26 shared by the side wall 18 and the upper wall 20.

[0045] The side wall 18 mainly extends in a plane parallel to the longitudinal direction L and the vertical direction V. In this case, the side wall 18 has a free edge 22 and a common edge 26 with the upper wall 20, and the common edge 26 connects the side wall 18 and the upper wall 20, and the side wall 18 and the upper wall 20 each extend in a separate plane.

[0046] The upper wall 20 also has a free edge 24 and extends between its free edge 24 and the common edge 26, having a curve as Figure 1 and 2 shown. It should be understood here that when viewed in a plane perpendicular to the longitudinal direction L, the upper wall 20 has a curved profile between the common edge 26 and its free edge 24, and this profile is inscribed in a circle.

[0047] Therefore, the adapter 14 according to the present invention has an L-shaped profile cross-section, as seen in a cross-section perpendicular to the longitudinal direction L, that is, it is inscribed in the transverse direction T and the vertical direction V.

[0048] As Figure 3 shown, an internal volume 28 of the adapter 14 is defined, and the internal volume 28 is at least partially bounded by the side wall 18 and the upper wall 20.

[0049] In addition, the adapter 14 includes at least one inner wall 30 that at least partially extends in the internal volume 28 of the adapter 14. More specifically, the inner wall 30 extends in the internal volume 28 from the upper wall 20 in a plane substantially parallel to the longitudinal direction L and the vertical direction V. It should be understood that the inner wall 30 extends substantially parallel to the side wall 18.

[0050] According to the present invention, the inner wall 30 helps to at least partially define a receiving area 32 intended to receive the connector. Therefore, when the adapter 14 is mounted on the connector, the latter is at least partially received in the receiving area 32.

[0051] In addition, as Figure 3As shown more clearly in, the adapter 14 includes a plurality of walls that help define the receiving area 32, particularly including the inner wall 30. More specifically, these walls extend to form a rectangle, and these walls extend in a plane that is substantially perpendicular to the plane in which the adjacent walls extend. Thus, it should be understood that the adapter 14 includes longitudinal walls 34 that extend parallel to the inner wall 30, and two connecting walls 36 that are perpendicular to the longitudinal walls 34 and the inner wall 30 and extend between the longitudinal walls 34 and the inner wall 30. Thus, it should be understood that when the adapter 14 is mounted on the connector, it is at least partially disposed between the inner wall 30 and the longitudinal walls 34, and between the connecting walls 36.

[0052] As described above, the adapter 14 is mounted so as to be rotatable on the connector by the rotating device 38. The rotating device includes a plurality of interacting elements, which are located on the connector on the one hand and on the adapter 14 on the other hand. In this case, only the elements of the rotating device supported by the adapter 14 are visible.

[0053] Thus, as Figure 3 shown, the adapter 14 includes a concave element 40a and a convex element on the longitudinal wall 34. The concave element 40a is configured to interact with a convex element (not shown) of the connector, and the convex element is for interacting with a concave element (not shown) of the connector.

[0054] More specifically, the convex element takes the form of a tab 40b that supports a cord, and the concave element 40a takes the form of a hole that receives the cord. The cord can rotate freely in the hole about the rotation axis R. The tab 40b of the adapter 14 extends, for example, in a plane that coincides with the plane in which the inner wall 30 extends, and is defined from the longitudinal wall 34 by at least one groove, advantageously two grooves, that extend in the vertical direction V. In this configuration, the tab 40b can be elastically deformed while being movable in a rotational direction parallel to the longitudinal direction L, such that the adapter 14 can be mounted on the connector.

[0055] According to a feature of the invention, the adapter 14 includes a front part 14a and a rear part 14b that are defined from each other by a plane P that is perpendicular to the longitudinal direction L and passes through the locking device 42.

[0056] Figure 2 and 3 The locking device 42 shown is intended to longitudinally fix the adapter 14 relative to the arm of the wiper system. The locking device 42 is mounted on the upper wall 20 and is capable of tilting about an inclined axis I that is parallel to the longitudinal direction of the adapter 14. The locking device 42 includes at least one device 44 for restricting its pivoting about the inclined axis I, which means abutting against the inner wall 30 of the above-mentioned adapter 14.

[0057] More specifically, the locking device 42 includes at least one as Figure 2The thrust member 46 shown and a fixed member 48 as shown in Figure 3 The thrust member 46 is located within the contour of the upper wall 20, while the fixed member 48 extends at least partially into the receiving recess 50 for receiving the arm. A more detailed description of the receiving recess 50 will be provided after the locking device 42 has been described.

[0058] As shown in Figure 2 The thrust member 46 extends linearly with the upper wall 20 and is flush with the upper wall 20. The thrust member 46 is also a component of the locking device 42 on which the user applies a force to allow the locking device 42 to tilt about the tilt axis I.

[0059] In itself, the fixed member 48 is a component of the locking device 42 configured to contact at least partially the rod of the arm 2 so as to longitudinally fix the adapter 14 to and / or remove it from the arm 2. Thus, it should be understood that the fixed member 48 interacts with the arm 2 in order to connect the adapter 14 to said arm 2.

[0060] As can be seen more clearly from Figure 3 the fixed member 48 extends from the thrust member 46 into the receiving recess 50 and includes a bent portion 52 and a free end 54 which, when the locking unit 42 is in the position for locking the adapter 14 onto the arm 2, is located within the receiving recess 50.

[0061] It should be understood here that the bent portion 52 includes a first portion extending from the thrust member 46 in a first plane and a second portion extending towards the free end 54 in a second plane intersecting the first plane, and the bent portion 52 includes a connecting portion connecting the first portion to the second portion. For example, the first plane is parallel to the longitudinal direction L and the vertical direction V, and the second plane extends parallel to the longitudinal direction L and the transverse direction T.

[0062] In itself, the free end 54 takes the form of an axis extending mainly along the longitudinal direction L

[0063] The limiting device 44 is part of the fixed member 48. More specifically, the limiting device 44 and the fixed member 48 form a single-piece assembly, i.e., the limiting device 44 and the fixed member 48 cannot be separated from each other without breaking the limiting device 44 and / or the fixed member 48. In this case, the limiting device 44 causes the free end 54 to extend longitudinally towards the receiving area 32. In other words, the free end 54 has a protrusion which causes the axis forming the free end 54 to extend longitudinally towards the receiving area 32, and this protrusion serves as the limiting device 44.

[0064] The locking device 42 also includes at least one transverse wall 60. The transverse wall 60 of the locking device 42 is understood to mean any wall extending in a plane intersecting the longitudinal axis L of the adapter 14. More specifically, according to an example of the present invention, the transverse wall 60 extends in the transverse direction T and the vertical direction V and is part of the thrust member 46 or the fixing member 48 of the locking device 42.

[0065] According to the present invention, the adapter 14 includes a projection 62 extending between the transverse wall 60 of the locking device 42 and an element of the rear part 14b of the adapter 14. According to the example of the present invention shown, the element of the rear part 14b of the adapter 14 is a guide channel 64 which is part of the receiving recess 50 and which is intended to receive the arm by extending at least partly in the internal volume 28 of the adapter 14.

[0066] More specifically, the guide channel 64 has a first longitudinal end 66 and a second longitudinal end 68. The arm is intended to enter the guide channel 64 through the first longitudinal end 66, and the second longitudinal end 68 is adjacent to the transverse wall 60 of the locking device 14. It can thus be understood that the projection 62 is formed between the transverse wall 60 of the locking device 42 and the second longitudinal end 68 of the guide channel 64.

[0067] According to a first example of the present invention, as Figure 5 shown, the projection 62 is integral with the transverse wall 60 of the locking device 42 (made of the same material). More specifically, the transverse wall 60 of the locking device 42 is located on its fixing member 48 at the rear part 14b of the adapter 14. The projection 62 then includes at least one contact surface 70 which extends at least partly towards the element of the rear part 14b of the adapter 14, which is in this case the second longitudinal end 68 of the guide channel 64. The longitudinal distance D1 between the contact surface 70 and the said second longitudinal end 68 is between 0.1 mm and 1 mm, and advantageously equal to 0.5 mm.

[0068] As Figure 4 shown, the guide channel 64 includes at least one retaining wall 72 for retaining the arm 2 in the vertical direction V of the adapter 14. The retaining wall 72 extends mainly in the transverse direction T and the longitudinal direction L. The retaining wall 72 forms a toothed portion with a free end, hereinafter referred to as a transverse side 74, for abutting against the arm so that the arm is retained in the guide channel 64 both in the transverse direction T and in the vertical direction V.

[0069] The retaining wall 72 extends longitudinally in the guide channel 64 from the first longitudinal end 66 to the second longitudinal end 68. According to an example of the present invention, the projection 62 thus extends in the longitudinal continuation of the retaining wall 72 of the guide channel 64.

[0070] The projection 62 also has a shape that matches the shape of the retaining wall 72 of the guiding channel 64 in the longitudinal direction L of the adapter 14. More specifically, a transverse side 74 of the retaining wall 72 defining the guiding channel 64 and a transverse edge 76 of the projection 62 are defined, and the transverse side 74 and the transverse edge 76 extend in a common plane, which in this case is the vertical V and longitudinal L plane.

[0071] In addition, a bearing surface 78 of the retaining wall 72 intended to contact the arm positioned in the guiding channel 64 is defined, and a bearing surface 80 of the projection 62 is defined, and the bearing surface 80 and the bearing surface 78 extend in a common plane, which in this case extends at least partially in the longitudinal direction.

[0072] The beneficial effect of such a projection 62 is that when the wiper is mounted on the arm and when the wiper is subject to a centrifugal force tending to eject the arm, a stop for locking the device 42 can be formed, and the wiper is then rotated, and the pivoting of the locking device 42 relative to the rest of the adapter 14 is restricted by the projection 62, and the projection 62 forms a stop between the fixed member 48 of the locking device 42 and the guiding channel 64.

[0073] As Figure 3 shown, the adapter 14 also includes at least one reinforcing member 82 that extends between the inner wall 30 and the upper wall 20. The reinforcing member 82 particularly includes, for example, a wall that mainly extends in a plane substantially perpendicular to the longitudinal direction L. The reinforcing member 82 enables the structure of the adapter 14 to be strengthened and its stiffness to be optimized. In addition, as Figure 3 shown, the reinforcing member 82 includes an opening 84 that helps to at least partially define the receiving recess 50. It should be understood that the opening 84 is intended to receive at least a part of the arm rod. The reinforcing member 82 extends at the front of the adapter 14 in a direction away from the guiding channel 64 relative to a plane P perpendicular to the longitudinal direction L and passing through the locking device 42, and the guiding channel 64 extends in the rear part 14b of the adapter 14.

[0074] As a result, as Figure 3 more clearly shown in, the opening 84 of the reinforcing member 82 and the guiding channel 64 are aligned along a direction parallel to the longitudinal direction L, so that the rod of the arm extends along the longitudinal direction L through the guiding channel 64 and the opening 84 of the reinforcing member 82.

[0075] According to the invention, the receiving recess 50 for receiving the rod of the arm is laterally offset from the receiving area 32 for receiving the connector in the transverse direction T.

[0076] More specifically, the receiving area 32 is closer to the side wall 18 than the receiving recess 50. In other words, the receiving area 32 is located between the receiving recess 50 and the side wall 18.

[0077] Furthermore, according to a feature of the invention, at least one end of the rod has a shape complementary to the receiving recess 50 of the adapter 14, the rod having a notch (not shown) which cooperates with the locking device 42 in order to longitudinally fix the position of the adapter 14 on the rod of the arm. It should be understood that the free end 54 of the fixing member 48 is located in the notch of the rod such that the rod is longitudinally fixed in the receiving recess 50.

[0078] It should be understood that, in order to remove the wiper from the arm, the locking device 42 is tilted about its tilting axis I until the limiting device 44 abuts against the inner wall 30. However, this tilting is sufficient to release the adapter 14 from the arm while still limiting the risk of breakage of the locking device 42.

[0079] However, the invention is not limited to the devices and configurations described and shown here, and it also extends to any equivalent devices and configurations and to any technically feasible combinations of these devices.

Claims

1. An adapter (14) for fixing a wiper (4) to an arm (2) of a wiper system (1), the adapter (14) extending along a longitudinal direction (L), the adapter (14) being configured to be mounted on a connector (10) of the wiper (4) and to be rotatable about a rotation axis (R) transverse to the longitudinal direction (L), the adapter (14) including locking means (42) for longitudinally fixing the adapter (14) relative to the arm (2), the adapter (14) including a front part (14a) and a rear part (14b) delimited from each other by a plane (P) perpendicular to the longitudinal direction (L) and passing through the locking means (42), the locking means (42) including at least one transverse wall (60) extending transverse to the longitudinal axis (L) and provided in the rear part (14b) of the adapter (14), the locking means (42) being mounted to be pivotable about an inclination axis (I) parallel to the longitudinal direction (L), the adapter (14) being characterized in that it includes a projection (62) extending between the transverse wall (60) of the locking means (42) and an element of the rear part (14b) of the adapter (14).

2. The adapter (14) according to claim 1, at least including side walls (18) and an upper wall (20) for defining an internal volume (28) of the adapter (14), the adapter (14) including at least one guiding channel (64) for receiving the arm (2) and at least partially extending in the internal volume (28) of the adapter (14).

3. The adapter (14) according to claim 2, wherein, The guiding channel (64) has a first longitudinal end (66) and a second longitudinal end (68), the arm (2) being intended to enter the guiding channel (64) via the first longitudinal end (66), the second longitudinal end (68) being adjacent to the transverse wall (60) of the locking means (42), the projection (62) being formed between the transverse wall (60) of the locking means (42) and the second longitudinal end (68) of the guiding channel (64).

4. The adapter (14) according to any one of the preceding claims, wherein, The projection (62) is integral with the transverse wall (60) of the locking means (42).

5. The adapter (14) according to any one of claims 1 to 3, wherein, The projection (62) is integral with an element of the rear part (14b) of the adapter (14).

6. The adapter (14) according to claim 5 in combination with claim 3, wherein, The projection (62) is integral with the second longitudinal end (68) of the guiding channel (64), the second longitudinal end (68) of the guiding channel (64) forming an element of the rear part (14b) of the adapter (14).

7. The adapter (14) according to any one of the preceding claims, wherein, The projection (62) includes at least one contact surface (70) extending at least partially facing the transverse wall (60) of the locking means (42) or an element of the rear part (14b) of the adapter (14), the longitudinal distance between the contact surface (70) and the transverse wall (60) or the element of the rear part (14b) being between 0.1 mm and 1 mm.

8. The adapter (14) according to any one of the preceding claims in combination with claim 2 or 3, wherein, The guide channel (64) includes at least one retaining wall (72) for retaining the arm (2) in the vertical direction (V) of the adapter (14), and the projection (62) extends in a longitudinal continuation of the retaining wall (72).

9. The adapter (14) according to claim 8, wherein, The shape of the projection (62) matches the shape of the retaining wall (72) of the guide channel (64) in the longitudinal direction (L) of the adapter.

10. The adapter (14) according to any one of claims 8 and 9, wherein, The retaining wall (72) of the guide channel (64) includes a transverse side (74), and the transverse edge (76) of the projection (62) extends in a common plane with the transverse side (74).

11. A connecting device (8) for a wiper (4), comprising at least a connector (10) and an adapter (14) according to any one of the preceding claims, wherein the connector (10) is mounted to be rotatable about a rotation axis (R) by means of a rotation device (16).

12. A wiper (4), comprising at least the connecting device (8) according to claim 11 or an adapter (14) according to any one of claims 1 to 10.

13. A wiper system (1), comprising at least an arm (2) and a wiper (4) according to claim 12, wherein the arm (2) includes at least one rod (6) received in the guide channel of the adapter (14).

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