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
  • B60S1/46—Cleaning windscreens, windows or optical devices using liquid; Windscreen washers
  • B60S1/48—Liquid supply therefor
  • B60S1/52—Arrangement of nozzles; Liquid spreading means
  • B60S1/522—Arrangement of nozzles; Liquid spreading means moving liquid spreading means, e.g. arranged in wiper arms
• • 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
  • B60S1/3415—Wiper arms; Mountings therefor with means for supplying cleaning fluid to windscreen cleaners, e.g. washers
• • 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
  • B60S1/38—Wiper blades
  • B60S1/3803—Wiper blades heated wiper blades
  • B60S1/3805—Wiper blades heated wiper blades electrically
• • 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
  • B60S1/46—Cleaning windscreens, windows or optical devices using liquid; Windscreen washers
  • B60S1/48—Liquid supply therefor
  • B60S1/487—Liquid supply therefor the liquid being heated
  • B60S1/488—Liquid supply therefor the liquid being heated electrically
• • 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
  • B60S1/38—Wiper blades
  • B60S2001/3812—Means of supporting or holding the squeegee or blade rubber
• • 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
  • B60S1/38—Wiper blades
  • B60S2001/3827—Wiper blades characterised by the squeegee or blade rubber or wiping element
  • B60S2001/3836—Wiper blades characterised by the squeegee or blade rubber or wiping element characterised by cross-sectional shape

Definitions

• the present invention concerns a wiper and washing arrangement for a vehicle windscreen, compris- ing
• washing fluid jetting apparatus its jetting head disposed on the windscreen wiper
• washing fluid nozzles arranged on the arm in two nozzle rows, and in each such row spaced at a distance in the longitudinal direction of the arm, the first nozzle row being disposed to direct the jets on a first side of the blade and the second nozzle row being disposed to direct the jets on the second side of the blade;
• - distribution means for distributing the washing fluid alternatively into the first duct or the second duct, for directing the jets in the wiper's direction of motion to the leading side of the blade, -a hollow space for the washing fluid, this space com ⁇ municating with the jetting apparatus and the entrance apertures of the washing fluid ducts opening into said space.
• the object of the present invention is to effect such improvement of a wiper and washing arrange ⁇ ment of this kind that the windscreen can always be made completely clean, whatever the conditions.
• This aim is achieved by means of the arrangement of the invention which is characterized in that, furthermore, within said hollow space has been provided an electric resistance heater to prevent freezing of the washing fluid and/or to melt the ice that may be present there ⁇ in; and/or in the blade has been provided an electric resistance heater to prevent icing of the blade and/or to melt the ice that may be present thereon.
• the distribution means include electrical ⁇ ly operated valves disposed in conjunction with the washing fluid ducts; and electric limit switches dis ⁇ posed to react on the extreme positions of the wiper's reciprocating motion and to control the opening and closing of the valves for alternative distribution of washing fluid to the first duct or to the second duct.
• Fig. 1 presents an arrangement according to the inven ⁇ tion, in elevational view and partly sectioned
• Fig. 2 shows the arm of the windscreen wiper of Fig. l,as seen from behind the vehicle's windscreen, i.e., in the direction X in Fig. 1,
• Fig. 3 presents the section III-III of Fig. 1, i.e., the cross section of the wiper, and Figs 4a-4e illustrate the principle of operation of the arrangement, as observed from behind the windscreen.
• the windscreen wiper and washing arrangement depicted in the drawings comprises the windscreen wiper proper, which has been indicated with reference numeral 1 and which comprises an arm 2 and a blade 3, and a washing fluid jetting apparatus with which washing fluid is jetted onto the windscreen 4 (see Fig. 1) .
• These are the principal components of the windscreen wiper and washing arrangement.
• a plurality of washing fluid nozzles 5a and 5b in two rows A and B on the arm 2 of the wiper 1 have been pro ⁇ vided, in its longitudinal direction and spaced from each other, a plurality of washing fluid nozzles 5a and 5b in two rows A and B.
• the nozzles 5a in the first row A are disposed to direct the jets on a first side of the blade 3; in this case, depending on the position of the wiper, first on its topside and then on the left side when the situation is observed from behind the windscreen 4.
• the nozzles 5b in the second row B are disposed to direct the jets on the other side of the blade, that is, when observed as described above, on the right side of the blade and thereunderneath.
• the pivot-side end of the arm 2 has been shaped to define an internally hollow, substantially cylindrical volume 8 into which the intake apertures 6a and 7a of said ducts 6 and 7 open and which communi- cates through a flexible tune 9 with the washing fluid container (not depicted) .
• these washing fluid means comprise a closing member 11 rotatably carried on the turning shaft 10 of the windscreen wiper l, this clos ⁇ ing member having closing faces lla and lib urged against the inside surface of the hollow space 8, for the intake apertures 6a and 7a for each washing fluid duct 6 and 7; and a pin component 12 cooperating with the closing members 11, this pin being disposed between the closing surfaces lla and lib on the base of rota ⁇ tion 13 of the wiper, which encloses and seals the hol ⁇ low space 8, for so moving the closing surfaces lla and lib that between the hollow space 8 communicating with the water tank and the first washing fluid duct 6, or between the hollow space 8 and the second washing fluid duct 7, is opened an alternative connection during the reciprocating movement of the wipe
• Figs 4a-4e (as also in Fig. 2) the wind ⁇ screen wiper 1 and its operation are considered viewing it from behind the windscreen 4, that is from the di ⁇ rection from which its operation is also observed in practice when the vehicle is in use.
• Fig. 4a represents the situation in which the wiper 1 begins to move upward from its position at rest.
• the closing member 11 is then in a position in which communication exists from the hollow space 8 to the first washing fluid duct 6, and if now washing fluid is jetted onto the windscreen, it will be ejected through the nozzles 5a to the area above the blade, i.e., on the side that is going to be wiped.
• the wiper is approaching its end position pointing upwards to the left, and the closing member 11 begins under control by the stationary pin component 12 to move away from coverage of the orifice 7a of the second washing fluid duct 7 and at the same time partially closes the orifice 6a of the first wash ⁇ ing fluid duct 6, whereby the jetting direction begins to change (this takes place very rapidly in practice) .
• Fig. 4b the wiper is approaching its end position pointing upwards to the left, and the closing member 11 begins under control by the stationary pin component 12 to move away from coverage of the orifice 7a of the second washing fluid duct 7 and at the same time partially closes the orifice 6a of the first wash ⁇ ing
• the wiper has reached its end posi- tion and begins to return towards the position at rest.
• the closing member 11 has now moved completely off the orifice 7a of the second washing fluid duct 7 and the washing fluid deposited on the windscreen is now all jetted through the nozzles 5b in the wiping direction mow in hand.
• the invention has been de ⁇ scribed with the aid of one advantageous exemplary embodiment only.
• the ar ⁇ rangement of the invention can be carried out in nu er- ous different ways within the protective sphere defined by the claims following below.
• the wash ⁇ ing fluid distribution means may consist of electric valves provided in conjunction with the washing fluid ducts and of limit electric switches controlling their opening and closing.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Water Supply & Treatment (AREA)
• Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
• Cleaning In General (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=8529507

Family Applications (1)

Country Status (2)

Cited By (28)

Citations (8)

• 1989
  • 1989-12-13 FI FI895961A patent/FI85356C/fi not_active IP Right Cessation
• 1990
  • 1990-12-12 WO PCT/FI1990/000294 patent/WO1991008933A1/en unknown

Patent Citations (8)

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