Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
  • B60S1/00—Cleaning of vehicles
  • B60S1/02—Cleaning windscreens, windows or optical devices
  • B60S1/04—Wipers or the like, e.g. scrapers
  • B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
  • B60S1/34—Wiper arms; Mountings therefor
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
  • B60S1/00—Cleaning of vehicles
  • B60S1/02—Cleaning windscreens, windows or optical devices
  • B60S1/04—Wipers or the like, e.g. scrapers
  • B60S1/0488—Wiper arrangement for crash protection or impact absorption
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
  • B60S1/00—Cleaning of vehicles
  • B60S1/02—Cleaning windscreens, windows or optical devices
  • B60S1/04—Wipers or the like, e.g. scrapers
  • B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
  • B60S1/34—Wiper arms; Mountings therefor
  • B60S1/3488—Means for mounting wiper arms onto the vehicle
  • B60S1/349—Means for mounting the wiper bearing to the vehicle body
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
  • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
  • B60R21/34—Protecting non-occupants of a vehicle, e.g. pedestrians
  • B60R2021/343—Protecting non-occupants of a vehicle, e.g. pedestrians using deformable body panel, bodywork or components
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
  • B60S1/00—Cleaning of vehicles
  • B60S1/02—Cleaning windscreens, windows or optical devices
  • B60S1/04—Wipers or the like, e.g. scrapers
  • B60S1/043—Attachment of the wiper assembly to the vehicle
  • B60S1/0436—Attachement of separate wiper shaft holders to the vehicle

Definitions

• the invention provides an arrangement for fixing a wiping mechanism for a motor vehicle allows the wiper brushes to be removed from the drive mechanism upon impact of the vehicle, in particular with a pedestrian.
• the invention more particularly provides an arrangement for fixing a wiping mechanism for a motor vehicle, of the type comprising at least one output bearing for guiding in rotation and for fixing a drive shaft which extends axially. in a substantially vertical direction, of the type in which the output bearing comprises a barrel in which the shaft is guided in rotation, and a flange for fixing the output bearing with a body structure element of the vehicle, of the type in which the sole has an upper support face against a lower face of the body structure element and a threaded portion of vertical axis A which extends vertically upwards from the upper support face, crossing a coaxial orifice of the body structure element and which is able to cooperate with a nut having a lower annular tightening surface for fixing the sole with the structure element of ca isse.
• the wiping mechanism which is arranged in the compartment engine near the cockpit, could penetrate inside the cockpit through the windshield bay under the effect of the shock.
• the object of the invention is to propose an assembly which allows the entire drive shaft to be erased, and which allows reassembly without the need to change the output bearing.
• the invention provides an arrangement of the type described above, characterized in that the nut is capable of separating into at least two parts when the wiping mechanism is subjected to a violent impact whose vertical component is oriented downwards and is greater than a determined value, allowing a separation of the sole from the body structure element.
• the nut comprises two coaxial cylindrical sections, a first radially inner section comprising a thread which cooperates with the threading of the threaded portion of the soleplate, and a second radially outer section, the annular surface of the lower end of which forms the bearing and clamping surface against an upper face opposite the body structure element, which is connected to the first section by at least one strip of material which is capable of breaking upon impact in order to separate the two cylindrical sections;
• the dimensions of the first section are determined so that it is able to pass through the orifice of the body structure element, after its separation from the second section;
• the strip of material connects the external cylindrical wall of the first section to the internal cylindrical wall of the second section;
• the strip of material consists of a horizontal annular strip coaxial with the cylindrical sections;
• the external cylindrical walls of the two sections of the nut are capable of cooperating each with a cylindrical portion complementary to a maneuvering element of the single nut;
• the first section projects upwards relative to the upper end of the second section
• the first section comprises a ring which extends radially inwards from the upper end of the first section, the lower face of which abuts against an upper annular face of the threaded portion of the sole when the nut is in mounted position with the threaded portion of the sole;
• the arrangement comprises at least one elastically deformable element axially interposed between the sole and the body structure element and / or the body structure element and the nut respectively;
• FIG. 1 is a schematic exploded representation in perspective of the mounting of the bearing outlet which includes a nut according to the teachings of the invention
• - Figure 2 is a view similar to that of Figure 1 in which the elements are shown in the assembled position;
• - Figure 3 is a section of the assembly shown in Figure 3 along a vertical plane passing through the axis of rotation of the drive shaft;
• Figure 4 is a view similar to that of Figure 3 in which the output bearing and the guide shaft are shown after the nut has broken, according to the invention.
• a wiping mechanism 20 of a window of a motor vehicle which comprises an output bearing 22, and a shaft 24 for driving a wiper blade -glass (not shown).
• the output bearing 22 allows the guiding in rotation and the fixing of the shaft 24. It comprises a tubular barrel 26 of vertical axis A which is designed to receive, in rotation about the axis A, the shaft 24.
• the upper end 36 of the shaft 24 protrudes axially outwards beyond the upper end of the barrel 26 so as to allow the mounting of the wiper on a conical bearing surface 38, in the notched occurrence, against which the wiper is intended to be tightened axially by a nut (not shown) screwed onto a threaded portion of the upper end 36 of the shaft 24.
• crank 40 is provided which is mounted in rotation with the shaft 24, substantially perpendicular to the axis A of the barrel 26.
• crank 40 For its connection with a control linkage 44, itself driven by a geared motor (not shown), the crank 40 comprises, at its free longitudinal end 42 opposite its end for fixing to the shaft 24, a spherical ball joint (not shown), which is intended to be received in a housing of complementary shape (not shown) carried by the linkage 44.
• the outlet bearing 22 For its attachment to a body structure element 30 of the vehicle, the outlet bearing 22 includes an annular sole
• the sole 32 comprises a cylindrical body 46 which passes through an orifice 50 of complementary diameter to the body structure element 30 when the outlet bearing 22 is in the mounted position, the sole 32 also comprises a lower support plate 52, of annular shape which extends radially outwards from the lower end 46i of the cylindrical body 46.
• the sole 32 is fixed with the body structure element 30 via the external cylindrical face 46e of the cylindrical body 46 which is threaded and which is able to cooperate with a nut 54 having a lower annular bearing surface 54i on the upper horizontal face 30s of the body structure element 30 for the sole 32, and by means of the planar upper face 52s of the lower support plate 52 which bears against a lower face facing opposite 30i of the body structure element 30.
• the body structure element 30 is tightened between the nut 54 and the lower support plate 52.
• the nut 54 is able to separate into two parts.
• the nut 54 comprises two coaxial cylindrical sections 56, 58, which are connected together by a strip of material 60 which is capable of breaking on impact in order to separate the two cylindrical sections 56, 58.
• the first cylindrical section 56 radially inside, has a thread which cooperates with the threading of the external cylindrical face 46e of the cylindrical body 46 of the sole 32.
• the outside diameter of the first cylindrical section 56 is less than the diameter of the orifice 50 of the body structure element 30 so that it is able to pass through the orifice 50 after being detached from the second inner cylindrical section 58.
• the second cylindrical section 58 radially outer, has an inner diameter greater than the diameter of the orifice 50 of the body structure element 30, so that its lower annular face forms the lower bearing face 54i of the nut 54 on the upper face 30s of the body structure element 30, around the orifice 50.
• the strip of material 60 consists of an annular strip which connects the external cylindrical wall of the first section 56 to the internal cylindrical wall of the second section 58.
• the two cylindrical sections 56, 58 can be connected differently, for example by several strips of radial material distributed angularly with respect to the axis A.
• the assembly of the nut 54 on the cylindrical body 46 of the sole 32 is carried out by screwing, and so that the assembly of the sole 32 on the body structure element 30 is sufficiently rigid, it is necessary to apply a certain torque for tightening the nut 54.
• the respective external cylindrical walls of the two cylindrical sections 56, 58 are each capable of cooperating with a complementary cylindrical portion of the same operating element so that 'They pivot identically around the vertical axis, and therefore that the strip of material 60 is not stressed when the nut 54 is tightened.
• the respective external cylindrical walls of the two cylindrical sections 56, 58- are hexagonal, in the manner of conventional hexagonal nuts, however, it will be understood that the external cylindrical walls of two cylindrical sections 56, 58 may each have a different shape, without departing from the scope of the invention.
• the inner cylindrical section 56 projects upwards relative to the upper end of the outer cylindrical section 58, it is then possible to access radially the two external cylindrical walls of the two cylindrical sections 56, 58, the operation of the nut 54 can then have the shape of an open-end wrench.
• the key for operating the nut 54 consists of a torque wrench allowing the operator to apply a tightening torque of the nut 54 relatively precise.
• the inner cylindrical section 56 has a horizontal ring 62 which extends radially inward from its upper end 56s, and whose lower face 62i of the horizontal ring 62 is extended downward by stops 64 which abut against the upper annular face 46s of the cylindrical body 46 when the nut 54 is in a position for which the flange 32 is considered to be fixed to the structural element of box 30.
• the damping means comprise a first damper element 66 which is interposed axially between the sole 32 and the body structure element 30, and a second damper element 68 which is interposed axially between the body structure element 30 and nut 54.
• the two shock-absorbing elements 66, 68 are elastically deformable elements so that the tightening of the nut 54 causes the shock-absorbing elements 66, 68 to be crushed. They are for example made of a material elastomer or rubber, and they are generally annular in shape.
• the internal diameter of the first damper element 66 is substantially equal to the external diameter of the cylindrical body 46 of the sole 32 so as to achieve its axial positioning relative to the sole 32.
• the second damper element 68 comprises a body 70 of generally rectangular section and an annular lip 72 which extends vertically upwards from the internal edge of the body 70, of external diameter substantially equal to the internal diameter of the external cylindrical section 58, of so as to achieve its axial positioning relative to the nut 54.
• the body structure element 30 comprises an annular section 74 which extends vertically upwards and which delimits the orifice 50 which is crossed by the sole 32.
• the external cylindrical face 70e forms an axial centering surface of the nut 54, and therefore of the sole 32, by means of the second damper element 68, making it possible to axially position the sole 32 relative to the element body structure 30.
• the upper part of the drive mechanism 20, that is to say the nut 54 and the upper end 36 of the shaft 24, is generally arranged outside the motor vehicle and exposed to various attacks dust and bad weather.
• the inner edge of the horizontal ring 62 of the nut 54 is extended radially inward by a seal 72 which makes it possible to prevent any intrusion of foreign elements along the shaft 24.
• the damper elements 66, 68 perform, in addition to their damping function, a sealing function between the body structure element 30 and the '' nut 54 the sole 32, of such that it is impossible for any foreign element to enter the drive mechanism 20.
• the nut 54 is made by molding plastic material, however, it will be understood that the nut can be made of a metallic material, without departing from the scope of the invention.
• a wiping mechanism 20 has been described in which the sole 32 is coaxial with the shaft guide shaft 24. However, it will be understood that the invention also applies to a wiping mechanism 20 for which the axis the vertical of the sole is horizontally offset with respect to the axis A of the shaft 26 for guiding the shaft 24.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Transmission Devices (AREA)
• Vibration Prevention Devices (AREA)
• Sealing Devices (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=31985405

Family Applications (1)

Country Status (6)

Families Citing this family (6)

Family Cites Families (7)

• 2002
  • 2002-09-30 FR FR0212207A patent/FR2845055B1/fr not_active Expired - Fee Related
• 2003
  • 2003-09-16 EP EP03750548A patent/EP1545946A1/de not_active Withdrawn
  • 2003-09-16 AU AU2003270198A patent/AU2003270198A1/en not_active Abandoned
  • 2003-09-16 JP JP2004538906A patent/JP4373918B2/ja not_active Expired - Fee Related
  • 2003-09-16 CN CNB03823422XA patent/CN100493966C/zh not_active Expired - Fee Related
  • 2003-09-16 WO PCT/EP2003/010256 patent/WO2004028874A1/fr active Application Filing

Non-Patent Citations (1)

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