阅读说明：本技术 擦拭器刮片的端部件和擦拭器橡胶件 (End piece of wiper blade and wiper rubber piece ) 是由 P.卡拉罗 G.巴雷特 X.布塞特 C.查萨因 于 2018-03-27 设计创作，主要内容包括：本发明涉及一种包括擦拭器刮片(1)的擦拭器橡胶件(5)和端部件(8)的组件(5、8),该擦拭器橡胶件(5)包括至少一个跟部(5a)和摩擦区域(5g),该摩擦区域(5g)能够与要被擦拭的表面接触,该端部件(8)包括被设计为接收擦拭器刮片(1)的柔性支撑件(6)的第一端部(31)的第一容置部(21),以及擦拭器橡胶件(5)的跟部(5a)延伸到其中的第二容置部(22),这两个容置部(21、22)沿穿过跟部(5a)和穿过摩擦区域(5g)的平面叠置,该端部件(8)包括与端部件(8)一体形成的用于附连至擦拭器橡胶件(5)的附连器件(19)。(The invention relates to an assembly (5, 8) of a wiper rubber (5) and an end piece (8) comprising a wiper blade (1), the wiper rubber (5) comprises at least one heel (5a) and a friction area (5g), the friction area (5g) being able to come into contact with a surface to be wiped, the end piece (8) comprising a first housing (21) designed to receive a first end (31) of a flexible support (6) of a wiper blade (1), and a second housing portion (22) into which a heel portion (5a) of the wiper rubber (5) extends, the two receptacles (21, 22) being superposed along a plane passing through the heel (5a) and through the friction area (5g), the end piece (8) comprises attachment means (19) formed integrally with the end piece (8) for attachment to the wiper rubber (5).)

1. An assembly (5, 8) of a wiper rubber (5) and an end piece (8) forming a wiper blade (1), the wiper rubber (5) comprises at least one heel (5a) and a friction area (5g), the friction area (5g) being contactable with a surface to be wiped, the end piece (8) comprising a first receptacle (21) configured to receive a first end (31) of a flexible support (6) of the wiper blade (1), and a second receptacle (22) into which a heel (5a) of the wiper rubber (5) extends, the two receptacles (21, 22) being superposed along a plane passing through the heel (5a) and through the friction area (5g), the end piece (8) comprises attachment means (19) to the wiper rubber (5) which are formed integrally with said end piece (8).

2. assembly (5, 8) according to claim 1, wherein the attachment means (19) comprise a channel (18) formed through a peripheral wall (20) of the end piece (8), the channel (18) comprising a first portion (41) having a first width (L1) and a second portion (42) having a second width (L2), the second width (L2) being greater than the first width (L1).

3. An assembly (5, 8) according to claim 2, wherein the channel (18) comprises a third portion (43) having a third width (L3), the third width (L3) being greater than the first width (L1).

4. Assembly (5, 8) according to the preceding claim, wherein the third width (L3) decreases between the opening (23) of the channel (18) and a second neck (52), the second neck (52) being interposed between the first portion (41) and the third portion (43).

5. Assembly (5, 8) according to any one of claims 2 to 4, wherein a first neck (51) having a fourth width (L4) is interposed between the first portion (41) and the second portion (42), the fourth width (L4) being smaller than the first width (L1).

6. assembly (5, 8) according to the preceding claim, wherein the first neck (51) comprises at least one tooth (71, 72).

7. Assembly (5, 8) according to claim 5 or 6, wherein the first neck (51) comprises a single pair of teeth (71, 72).

8. Assembly (5, 8) according to the preceding claim, wherein each tooth (71, 72) extends towards the second portion (42) of the channel (18).

9. Assembly (5, 8) according to any one of claims 2 to 8, wherein the width (E2) of the intermediate body (5c) of the wiper rubber (5) arranged between the heel (5a) and the friction area (5g) is measured outside the first portion (41) of the channel (18), the width (E2) of the intermediate body (5c) being greater than the first width (L1) of the first portion (41) of the channel (18).

10. An assembly (5, 8) according to any of the preceding claims, wherein only the wiper rubber (5) is deformable.

11. An assembly (5, 8) according to any of the preceding claims, wherein the end piece (8) is made of a material that is more rigid than the material of which the wiper rubber (5) is made.

12. Assembly (5, 8) according to any one of claims 2 to 11, wherein the peripheral wall (20) of the end piece (8) in which the channel (18) is formed has a flat surface in a dimension at least equal to the width of a first receptacle (21) of said end piece (8) intended to receive the first end (31) of the flexible support (6).

13. A wiper blade (1) comprising an assembly (5, 8) according to any one of the preceding claims and a flexible support (6) whose first end (31) is received inside the first receiver (21).

14. A wiper blade (1) according to the preceding claim, wherein the flexible support (6) comprises a single ridge.

15. Wiping system (3) comprising a drive arm (2) provided with a connection device (10) for connection to a wiper blade (1) according to claim 13 or 14.

Technical Field

Background

Wiping systems for motor vehicles, commonly referred to as windshield wipers, are designed to remove, by sweeping, liquids and dirt that may interfere with the view of the motor vehicle driver in his surroundings. Such a windscreen wiper generally comprises a driving arm performing a reciprocating angular movement about an axis of rotation, and an elongated wiper blade equipped with a wiper rubber made of an elastic material. By rubbing on the front or rear smooth surface (glazed surface) of the motor vehicle, the wiper rubber sweeps water and a certain amount of dirt away from this smooth surface and out of the driver's view.

Irrespective of the configuration of the wiper blade, i.e. either a wiper blade comprising an articulated grip which holds the wiper rubber in a plurality of separate zones, or a wiper blade (also called "flat blade") comprising at least one flexible support which holds the wiper rubber over its entire length, the wiper blade is attached to a terminal portion of the driving arm by means of a connection device comprising a connector mounted integrally with the wiper blade.

in the "flat blade" variant of the wiper blade, at each longitudinal end of the wiper blade, the wiper rubber and the flexible support are equipped with an end piece which helps to hold the wiper blade and the flexible support firmly together.

The closest prior art is formed by document US2010/0050362, in which an end piece is able to receive the longitudinal ends of a wiper rubber and the longitudinal ends of two carrier elements. To this end, the end piece comprises a first receptacle and a second receptacle which are arranged along the same first plane and which are capable of each receiving a longitudinal end of one of the carrying elements. The end piece has a third receptacle capable of receiving a longitudinal end of the wiper rubber, the third receptacle being interposed between the first and second receptacles, the third receptacle being in communication with the first and second receptacles.

The end piece also has a pair of teeth disposed along the same second plane. The first tooth is disposed below the first receiver and the second tooth is disposed below the second receiver. The teeth form means for retaining the end piece based on the teeth projecting into the wiper rubber to hold the wiper rubber and end piece in place.

Such retaining means are particularly aggressive towards the wiper rubber (aggressive), tending to cause its tearing and, ultimately, the damage of the wiper blade.

In addition, the technique with two bearing elements utilized by the wiper blade disclosed in this document is not at all applicable to the case where the user wishes to replace only the worn part of the wiper blade (i.e. the wiper rubber). In fact, the end piece participates in mechanically holding the two carrier elements and their disassembly in order to replace the wiper rubber, requiring the carrier element to be removed in a manner incompatible with the ergonomic reassembly of a new wiper rubber.

Disclosure of Invention

the object of the invention is to propose an assembly formed by an end piece provided with attachment means to the wiper rubber and the wiper rubber, such an assembly allowing the wiper rubber to be easily replaced when worn, without having to divide the wiper blade into several parts.

The invention therefore proposes an assembly formed by a wiper rubber constituting a wiper blade and an end piece, the wiper rubber comprising at least one heel and a friction area which can be brought into contact with a surface to be wiped, the end piece comprising a first receptacle configured to receive a first end of a flexible support of the wiper blade, and a second receptacle into which the heel of the wiper rubber extends, the two receptacles being superposed along a plane passing through the heel and through the friction area, the end piece comprising attachment means integral with the end piece to which the wiper rubber is attached.

The material of which the end piece is made is used to produce a frictional connection with the wiper rubber, in particular in the section of the wiper rubber located between the friction region and the heel of the wiper rubber. The attachment means will thus press the wiper blade in order to ensure a mechanical connection between the end piece and the wiper rubber by friction.

The friction zone forms a longitudinally extending strip which is in contact with the surface to be wiped, which may be the windscreen, rear window or headlights of a vehicle.

The receptacle is a recess formed in the end piece having a rectangular or substantially rectangular cross-section.

the assembly according to the invention, although suitable for original equipment wiper blades on motor vehicles, also forms an article to be sold in a sales network of after-market motor vehicle components.

The assembly according to the invention advantageously comprises at least one of the following features, alone or in combination:

the attachment means comprise a channel formed through the peripheral wall of the end piece, the channel comprising a first portion having a first width and a second portion having a second width, the second width being greater than the first width. Advantageously, the second portion is a continuation of the first portion along the above-mentioned plane, and, for example, one is an immediate (immediate) continuation of the other,

the wiper rubber comprises an intermediate body arranged between the heel and the friction area, the intermediate body having a thickness measured before insertion into the channel that is greater than a first width of a first portion of the channel and less than a second width of a second portion of the channel. The wiper rubber is made of a deformable material, for example, an elastomer or rubber. Which can thus be compressed, so as to enter the first portion of the channel,

-the channel comprises a third portion having a third width, the third width being larger than the first width. The third part is an insertion area of the wiper rubber, which allows the wiper rubber to be mounted on the end piece. Advantageously, the third portion is a continuation of the first portion along the above-mentioned plane, and for example one is another immediately following continuation. It should be noted that the first portion is interposed between the second and third portions of the channel,

The end piece comprises a first neck having a fourth width, the first neck being interposed between the first portion and the second portion, the fourth width being smaller than the first width. Such a neck thus forms a constriction of the width of the first portion of the channel, into which constriction the wiper rubber extends,

The first neck is equipped with at least one tooth. Advantageously, the neck comprises a single pair of teeth, i.e. two teeth positioned one facing the other. The teeth are integrally formed with the end piece and are formed by the thickness of the peripheral wall defining the end piece. Each tooth extends towards the second portion of the channel,

The first receptacle is separated from the second receptacle by a wall common to both receptacles. Such a common wall may be solid and uninterrupted between the two receivers. According to an alternative, the common wall may comprise a passage between two receptacles, which receptacles are kept separate, as long as at least one common wall portion is present between the first receptacle and the second receptacle,

The third width decreases between the first opening of the channel and a second neck interposed between the first portion and the third portion of the channel,

-the third width decreases continuously or stepwise,

-the width of the intermediate body of the wiper rubber, measured outside the first portion of the channel, is greater than the first width of the first portion of the channel,

Only the wiper rubber is deformable. In other words, the end piece itself is not deformable,

the end piece is made of a material more rigid than the material of which the wiper rubber is made,

the peripheral wall of the end piece, in which the channel is formed, has a flat surface in a dimension at least equal to the width of the first receptacle of the end piece, which is intended to receive the first end of the flexible support.

The end piece as described in the present invention is monolithic, that is, formed as a single piece and made of a single material.

The invention also relates to a wiper blade comprising such an assembly and a flexible support, the first end of which is received in a first receiver. Such wiper blades may in particular also comprise one or more air spoilers, connectors and optionally adapters which allow the wiper blade to be associated with a specific type of drive arm.

The invention also relates to a wiping system comprising a drive arm provided with a connecting device for connecting to such a wiper blade, which connecting device may comprise an adapter as described above.

Drawings

Other features, details and advantages of the invention will become more apparent upon reading the following description, given by way of illustration with reference to the accompanying drawings, in which:

figure 1 is a perspective view of a wiping system according to the invention,

Figure 2 is a perspective side view of an end piece forming a portion of the wiping system shown in figure 1,

Figure 3 is a transverse cross-sectional view of the end piece as shown in figure 2,

Figure 4 is a transverse cross-sectional view of the end piece shown in figures 2 and 3 associated with the wiper rubber and flexible support,

Figure 5 is a bottom perspective view of the end piece as shown in figures 2 to 4,

Figure 6 is a bottom view of the end piece as shown in figures 2 to 5,

Figure 7 is a bottom perspective view of the wiper rubber and the end piece as shown in figures 2 to 6 before they are assembled,

fig. 8 is a bottom perspective view of the end piece and wiper rubber shown in fig. 7 assembled with one another.

Detailed Description

It should be noted at the outset that the drawings illustrate the invention in a detailed manner in order to practice the invention, and that the drawings can, of course, be used to better define the invention at the appropriate time.

In the figures, the terms longitudinal, transverse, vertical, lateral, left, right, up, down refer to the orientation of the wiper blade 1 as shown in fig. 1 in an orthogonal coordinate system Oxyz. In this coordinate system, the axis Ox represents the longitudinal direction of the object in question (in particular the wiper blade), the axis Oy represents the transverse direction and the axis Oz represents the vertical direction. In this coordinate system, the longitudinal plane is parallel to the plane Oxz, the transverse plane is parallel to the plane Oyz, and the vertical plane is parallel to the plane Oxy.

in fig. 1, the wiper blade 1 according to the invention extends along a longitudinal axis X, parallel to the axis Ox. The terms left and right are understood with respect to positions on either side of the longitudinal axis X along a transverse axis Y parallel to the axis Oy. The vertical axis Z symbolizes the vertical direction, parallel to the direction of the axis Oz, which is perpendicular to the above-mentioned longitudinal and transverse directions. The term upper or lower relates to an orientation along the vertical axis Z, the term lower encompassing the plane of the windshield. With respect to the longitudinal direction, the terms outer or inner are understood with respect to the pivot point of the wiper blade 1 on the driving arm 2 of the wiper blade 1, the term inner corresponding to the driving arm 2 and the part of the blade half extension, and the term outer corresponding to the part of the other blade half extension.

Motor vehicles are generally equipped with a wiping system 3 for removing water and/or dirt present on a slippery surface, in particular the rear window or the front windshield of the motor vehicle. The wiping system 3 comprises a driving arm 2, which driving arm 2 is capable of performing a reciprocating angular movement along and over a smooth surface.

The wiping system 3 further comprises a wiper blade 1, which extends along a longitudinal axis X. The wiper blade 1 comprises a wiper rubber 5 and at least one air spoiler 4. The air spoiler 4 is provided for converting the pressure exerted by the air flow flowing along the smooth surface into a force with which the wiper blade 1 is pressed against the smooth surface of the motor vehicle.

The wiper rubber 5 is a component of the wiper blade 1 that is in direct contact with a smooth surface in order to remove water and/or dirt present thereon. The wiper rubber 5 is, for example, a flexible blade made of an elastic material, such as a polymer, in particular rubber. The wiper blade 1 also comprises a flexible support 6, which can be seen more particularly in fig. 4, which gives the wiper blade 1 a certain deformation along the plane Oxz and a curved shape for optimal application of the wiper blade 1 against a smooth surface. The wiper blade 1 also comprises an end piece 8 at each of its longitudinal ends 7. Each end piece 8 is provided to hold the wiper rubber 5 and the flexible support 6 together, such an end piece 8 may cover, for example, a terminal portion of the air spoiler 4. The flexible support 6 thus extends from a first longitudinal end 7 of the wiper blade 1 to a second longitudinal end 7 of the same blade.

According to an exemplary embodiment, the flexible support 6 is, for example, a metal strip, which is also referred to as a ridge. Advantageously, there is only one such ridge, at least when viewed in the plane Oxy.

The air spoiler 4, the wiper rubber 5 and the flexible support 6 form a semi-rigid structure 9, which semi-rigid structure 9 is carried by a connection means 10, which connection means 10 is interposed between a terminal portion of the drive arm 2 and the semi-rigid structure 9. Such connection means 10 comprise, for example, a connector fixed to the semi-rigid structure 9 at least in an isostatic manner, and an adapter connected to the connector by a pivoting link.

In fig. 2 to 4, the end piece 8 is generally arranged in a cap which delimits an inner volume 11 which is accessible through a passage 12. The channel 12 preferably extends in a transverse plane Oyz. The end piece 8 comprises an upper ridge 13 which is arranged to receive the longitudinal end of the leading edge of the air spoiler 4. The upper ridge 13 extends generally along the vertical plane Oxz.

According to the invention, the assembly is formed by the end piece 8 and the wiper rubber 5, which are attached to each other by means of attachment means 19, which are formed integrally with the end piece 8. It should be appreciated here that the attachment means is one or more forms of end piece 8 which are capable of forming an at least isostatic (isostatic) connection between the end piece 8 and the wiper rubber 5. According to one example, such attachment means 19 grip the wiper rubber 5.

The end piece 8 has at least two separate receivers 21, 22, wherein a first receiver 21 is provided to receive a longitudinal end 31 of the flexible support 6 and a second receiver 22 is provided to partially receive a longitudinal end 32 of the wiper rubber 5. The first receptacle 21 and the second receptacle 22 are sealed with respect to each other and do not communicate with each other. Both the first receiver 21 and the second receiver 22 are formed in a horizontal plane Oxy, extending along the longitudinal axis X.

in the use position of the wiper blade 1 on a motor vehicle, the first receiver 21 and the second receiver 22 are stacked one on top of the other, the first receiver 21 being arranged above the second receiver 22. In this configuration, the first receiver 21 is a lower receiver, and the second receiver 22 is an upper receiver. The first receptacle 21 and the second receptacle 22 are open to the exterior of the end piece 8 through the passage 12. Such a channel 12 leads to a first receiver 21 for a longitudinal end 31 of the flexible support 6 and to a second receiver 22 for a longitudinal end 32 of the wiper rubber 5.

More particularly with reference to fig. 4, the wiper rubber 5 comprises a heel 5a and a head 5b, which are connected to each other by an intermediate body 5 c. The second receiver 22 is more particularly intended to receive the heel 5a of the wiper rubber 5, so as to allow the head 5b of the wiper rubber 5 to protrude from the end piece 8. The heel 5a has, for example, a cross-section complementary to the cross-section of the second receptacle 22. The heel 5a is here substantially rectangular in cross-section in order to assist insertion of the heel 5a into the second receptacle 22, the second receptacle 22 likewise being rectangular in cross-section.

The head 5b comprises, for example, a lateral arm 5d carried by the intermediate body 5c, and a tapered tip 5e connected to the lateral arm 5d by a transition portion 5 f. When the wiper blade 1 is positioned on a smooth surface, the tapered tip portion 5e of the wiper rubber 5 is set to travel along the smooth surface, and the friction area 5g of the tapered tip portion 5e is in contact with the smooth surface. The friction area 5g and the heel 5a each form an end of the wiper rubber 5 when viewed along the plane Oxz. This plane passing through the friction area 5g and through the heel 5a forms a longitudinal mid-plane which symmetrically divides the wiper rubber 5, as can be seen in fig. 4.

The first receptacle 21 and the second receptacle 22 are preferably delimited by at least one common wall 14, the common wall 14 forming part of the end piece 8. This wall is common in that it delimits the two receivers 21 and 22. The common wall 14 extends in a horizontal plane Oxy between the first receptacle 21 and the second receptacle 22.

The first receiver 21 is also defined by at least one post 15, and preferably by two posts 15, as shown in fig. 2-4. The columns 15 are parallel to each other and to the plane Oxz. The posts 15 each comprise a lower end forming a guide ramp 16, which is formed parallel to the plane Oxy. In other words, first receptacle 21 is bordered by guide ramps 16 and by common wall 14, so that flexible support 6 is inserted into first receptacle 21 by sliding between common wall 14 and guide ramps 16, and abuts against those ramps. The lateral edges 17 of the end piece 8 allow the flexible support 6 to be guided in the plane Oxy. The common wall 14, the post 15 and the lateral edge 17 peripherally delimit at least a portion of the first receptacle 21. But the perimeter is open, for example between two posts 15, or between each post 15 and each lateral edge 17.

the second receiver 22 is equipped with a channel 18. The channel 18 forms an exemplary embodiment of an attachment means 19, which attachment means 19 the end piece 8 comprises for attaching and holding the wiper rubber 5.

the channel 18 is open towards the outside of the end piece 8 and is formed to extend parallel to the longitudinal axis X. The channel 18 allows communication between the outside of the end piece 8 and the second receptacle 22. The channel 18 has the form of a slot formed through the lower wall 20 of the end piece 8. As shown in particular in fig. 5, the lower wall 20 of the end piece 8 is flat. More precisely, the lower wall 20 of the end piece 8 is flat, over a dimension at least equal to the width of the first receptacle 21 for receiving the first longitudinal end 31 of the flexible support 6. This width of the first receiver 21 is measured along the transverse axis Y between the lateral edges 17.

the channel 18 at least partially receives the intermediate body 5c of the wiper rubber 5, while the second receiver 22 receives the heel 5a of the wiper rubber, the head 5b remaining outside the end piece 8.

on either side of the channel 18, the lower wall 20 delimiting the second receptacle 22 forms two hooks which catch the heel 5a of the wiper rubber 5 and retain it in the second receptacle 22.

in the plane Oxy, the channel 18 is delimited by an opening 23, the opening 23 being formed through the lower wall 20 and which allows communication between the channel 18 and the channel 12. The opening 23 is an opening through which the intermediate body 5c enters the attachment means 19 when the wiper rubber 5 is fixed to the end piece 8.

In fig. 5 and 6, the channel 18 comprises three portions 41, 42, 43, wherein the first portion 41 is interposed between the second portion 43 and the third portion 43, the third portion 43 being bordered by the first opening 23. In other words, from the first opening 23, the channel 18 comprises, successively and along the longitudinal axis X, a third portion 43, a first portion 41 and a second portion 42, the first opening 23 being longitudinally opposite the stop 26 partially delimiting the second portion 42 and positioned facing this stop 26. The stop 26 is formed by a peripheral wall which delimits the end piece 8 with respect to its outer environment.

the portions 41, 42, 43 have respective widths L1, L2, L3 different from each other, each width L1, L2, L3 being measured parallel to the transverse axis Y between two longitudinal edges 61, 62, the two longitudinal edges 61, 62 being transversely opposite and facing each other. The longitudinal edges 61, 62 thus laterally delimit the channel 18. More particularly, the first width L1 is strictly less than the second width L2. Still more particularly, the first width L1 is strictly less than the third width L3.

The first portion 41 and the second portion 42 are separated from each other by a first neck 51. In other words, the first neck 51 is a region of the channel 18 in which the width of the channel 18 varies from the first width L1 to the second width L2. First neck 51 has a fourth width L4 between longitudinal edges 61, 62 and parallel to transverse axis Y, fourth width L4 preferably being smaller than first width L1, such that first neck 51 forms a width constraint interposed between first portion 41 and second portion 42.

The first neck 51 is provided with a single pair of teeth 71, 72, the first tooth 71 being provided with the first longitudinal edge 61 and the second tooth 72 being provided with the second longitudinal edge 62. Each tooth 71, 72 has the shape of a harpoon, one end of which points towards the second portion 42. In other words, the teeth 71, 72 are inwardly directed and taper from the first portion 41 towards the second portion 42. The width E1 of each tooth 71, 72, measured parallel to the transverse axis Y and between the two longitudinal edges 81, 82 delimiting the tooth 71, 72, decreases from the first portion 41 to the second portion 42. Each tooth 71, 72 has, for example, a triangular shape.

The first portion 41 and the third portion 43 are separated from each other by a second neck 52. In other words, the second neck 52 is a region of the channel 18 in which the width of the channel 18 varies from the first width L1 to the third width L3. The third portion 43 is a region in which the longitudinal edges 61, 62 may include one or more beveled corners 24 such that the third width L3 preferably decreases, either regularly continuous or stepwise, from the first opening 23 to the second neck 52. According to both variants, the third portion 43 is arranged substantially as a tunnel.

fig. 7 and 8 show two successive steps of the method for attaching the wiper rubber 5 to the end piece 8. In fig. 7, the intermediate body 5c of the wiper rubber 5 is arranged to face the first opening 23, and the heel 5a of the wiper rubber 5 is arranged to face the second receiver 22. Upon translational movement of the wiper rubber 5 along the longitudinal axis X (indicated by arrow 27), the second longitudinal end 32 of the wiper rubber 5 passes through the channel 12 until the heel 5a enters the second receptacle 22 and the intermediate body 5c enters the third portion 43 of the channel 18.

The third portion 43 is arranged as a tunnel to facilitate the insertion of the intermediate body 5c into the channel 18 and, therefore, the introduction of the heel 5a into the second receptacle 22. The intermediate body 5c of the wiper rubber 5 then travels within the first portion 41 while being laterally pressed. Before the wiper rubber 5 is attached to the end piece 8, the intermediate body 5c has a width E2 which is greater than the first width L1, the width E2 of the intermediate body 5c being measured parallel to the transverse axis Y between the two lateral edges of the intermediate body 5 c. In another frame of reference, the width E2 of the intermediate body 5c may be measured outside the first portion 41 of the channel 18, for example in the third portion 43 or outside the end piece 8.

It should be appreciated here that the insertion of the intermediate body 5c into the first portion 41 is performed by force, based on the elastic deformation of the intermediate body 5 c. These arrangements are intended to enhance the mechanical connection of the end piece 8 to the wiper rubber 5. The intermediate body 5c then passes the first neck 51, the arrangement of which as a width constraint produces an additional compression of the intermediate body 5c within the channel 18 in the region of the first neck 51. These arrangements also aim to improve the mechanical connection between the end piece and the wiper rubber 5 by limiting any translational movement in the direction opposite to that indicated by the arrow 27.

The intermediate body 5c is then introduced into the second portion 42, in which the intermediate body 5c is spread out and stretched laterally, regaining its original width. Finally, the second end 32 of the wiper rubber 5 comes into contact with the stop 26, thereby limiting the translational movement according to arrow 27. Due to the positioning in the second portion 42 of the channel 18, the intermediate body 5c tends to regain its original shape, and the teeth 71, 72 are anchored within the intermediate body 5c, so that the intermediate body, and therefore the wiper rubber 5, is held firmly in position, as shown in fig. 8. These arrangements optimize the mechanical connection between the end piece 8 and the wiper rubber 5.

From the above, it is appreciated that only the wiper rubber 5 is deformed during the method of attaching the wiper rubber 5 to the end piece 8. In other words, the end piece 8 is made of a material that is more rigid than the material from which the wiper rubber 5 is made.

It should be noted here in the description that the length of the channel 18, measured parallel to the longitudinal axis X between the first neck 51 and the second neck 52 (i.e. forming the first portion 41), is 7.5mm to 11.5mm (within +/-10%), so that the purpose of the frictional connection and attachment of the end piece 8 to the wiper rubber 5 is optimized. Such a length provides the necessary frictional connection between the attachment means 19 of the end piece 8 and the wiper rubber 5. The optimized length of the first portion 41 is equal to 8 mm.

The foregoing description clearly explains how the invention makes it possible to achieve the objects set by it, and in particular proposes an assembly for a motor vehicle comprising a wiper rubber of a wiper blade and an end piece, which are mechanically connected to each other by means of a device integral with the end piece, that is to say without adding additional snap fasteners.

Of course, when using one form of end piece molded simultaneously with the rest of the end piece, the skilled person can make various changes to the assembly according to the invention that has been described by way of non-limiting example.

In any case, the invention should not be limited to the embodiments specifically described in this document, and in particular extends to any equivalent means and any effective combination of these technically feasible.