WO2012110266A1 - Windscreen air distribution system - Google Patents

Windscreen air distribution system Download PDF

Info

Publication number
WO2012110266A1
WO2012110266A1 PCT/EP2012/050353 EP2012050353W WO2012110266A1 WO 2012110266 A1 WO2012110266 A1 WO 2012110266A1 EP 2012050353 W EP2012050353 W EP 2012050353W WO 2012110266 A1 WO2012110266 A1 WO 2012110266A1
Authority
WO
WIPO (PCT)
Prior art keywords
windscreen
air distribution
air
housing
motor
Prior art date
Application number
PCT/EP2012/050353
Other languages
French (fr)
Inventor
Hermann Geiss
Alexander Zeller
Andreas Stieglitz
Patrick HOERTING
Original Assignee
Agco International Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Agco International Gmbh filed Critical Agco International Gmbh
Priority to US14/000,267 priority Critical patent/US9616850B2/en
Priority to EP12700952.0A priority patent/EP2675636B1/en
Publication of WO2012110266A1 publication Critical patent/WO2012110266A1/en

Links

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
    • B60S1/023—Cleaning windscreens, windows or optical devices including defroster or demisting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00007—Combined heating, ventilating, or cooling devices
    • B60H1/00207—Combined heating, ventilating, or cooling devices characterised by the position of the HVAC devices with respect to the passenger compartment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
    • B60H1/00378—Air-conditioning arrangements specially adapted for particular vehicles for tractor or load vehicle cabins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/24—Devices purely for ventilating or where the heating or cooling is irrelevant
    • B60H1/241—Devices purely for ventilating or where the heating or cooling is irrelevant characterised by the location of ventilation devices in the vehicle
    • B60H1/242—Devices purely for ventilating or where the heating or cooling is irrelevant characterised by the location of ventilation devices in the vehicle located in the front area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions
    • B62D25/081—Cowls

Definitions

  • This invention relates to an air distribution system for the windscreen of a vehicle cab and in particular for the cab of an agricultural tractor or similar vehicle.
  • Such vehicles typically have an external windscreen wiper mounted in the middle of the windscreen and which is powered by a motor mounted on the inside of the windscreen.
  • the most important part of the windscreen to demist and defrost is the middle part in order for the driver to have a good view of the road or field or any equipment mounted on the front of the vehicle (e.g. a front-loader).
  • a vehicle cab windscreen air distribution system for a windscreen provided with an external windscreen wiper and a windscreen wiper motor mounted on the inside of the windscreen, the distribution system comprising an air distribution housing which at least partially surrounds the wiper motor, the housing defining a passage for the supply of air onto the inside of the windscreen in the vicinity of the motor.
  • Such a system ensures the supply of air to the middle part of the windscreen in a simple and compact manner. At the same time, the windscreen wiper motor is hidden.
  • the passage for the supply of air may be defined between a motor housing and part of the air distribution housing.
  • the passage for the supply of air may be completely defined by the air distribution housing.
  • the present invention is particularly suitable for vehicle cabs which have windscreens can be pivoted to an open position, the motor moving into a position where it is surrounded by the air distribution housing when the windscreen is in its closed position.
  • the air distribution housing may also included additional outlets spaced from the motor for the discharge of air into the associated vehicle cab.
  • Fig. 1 shows an external perspective view of an air distribution housing in accordance with the invention
  • Fig. 2 shows a front view of the housing of Figure 1 ;
  • Fig. 3 shows a section along line A-A of Figure 2
  • Fig. 4 shows a detail (B) of Figure 3.
  • a tractor cab is provided with a two-piece windscreen 1 with an upper part 1 a and a lower part lb.
  • a motor housing 2 encloses a wiper motor 2a and a gearing 2b which are mounted on the inside of the upper part of the windscreen l a.
  • a wiper 5 is mounted on the outside of the upper part la of the windscreen and is driven by motor 2a and gearing 2b.
  • the upper part l a of the windscreen is pivotally mounted at its upper edge on the cab so that the windscreen can be pivoted together with the wiper 5, motor 2a, gearing 2b and motor housing 2 to an open position by turning a fastening lever 6 to its open position.
  • the upper part l a of the windscreen 1 is supported in its open position by a gas spring (not shown).
  • an air distribution housing 3 which contains a lower part 4 and which partly surrounds the wiper motor housing 2 and defines a passage 3 a through which air can flow to the windscreen 1 a as shown by the arrow X in Figures 3 and 4.
  • this air flow exits the housing 3 via the gap 3b between the motor housing 2 and the top edge 3c of housing 3 around the pivot of the wiper and thus air is guided to the windscreen on the inside of the cab. This ensures that the air reaches the middle part of the windscreen as required.
  • Air also exits from the lower part 4 as shown by arrow Y via outlet 9 the flow through which is controlled by flaps 8 which can be moved by the tractor driver or the air ventilating/conditioning system between the full and dotted line positions of Figures 3 and 4 to regulate air flow into the cab.
  • flaps 8 which can be moved by the tractor driver or the air ventilating/conditioning system between the full and dotted line positions of Figures 3 and 4 to regulate air flow into the cab.
  • slots 7 may be provided in the lower part 4 of the air distribution housing which may be a separate component from the upper housing part 3 along a break line 4a to allow easy access for servicing etc.
  • Figure 3 also shows the upper part la of the windscreen in its open position la' in which the motor housing 2 has been moved away from the air distribution housing 3.
  • the air is directed between the outer surface of the motor housing 2 and the inside surface of the air distribution housing 3, the air passage may be define completely by the housing 3 preferably by providing a further inner surface 3d to the housing 3 as indicated in dotted detail in Figure 4.
  • This alternative arrangement serves to shield the motor to a certain extent from the effects of the hot air which may be passed through passage 3 a.
  • the invention can also be used on a one-piece non-opening windscreen, where it is not necessary, to provide a quick defrosting of the middle part of the windscreen around the windscreen wiper mounting.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

Vehicle cab windscreen air distribution system for a windscreen (1) provided with an external windscreen wiper (5) and a windscreen wiper motor (2a) mounted on the inside of the windscreen. The distribution system comprises an air distribution housing (3) which at least partially surrounds the wiper motor (2, 2a), the housing defining a passage (3a) for the supply of air onto the windscreen (la) in the vicinity of the motor. The passage (3a) for the supply of air is defined between a motor housing (2) and part of the air distribution housing (3),

Description

WINDSCREEN AIR DISTRIBUTION SYSTEM
This invention relates to an air distribution system for the windscreen of a vehicle cab and in particular for the cab of an agricultural tractor or similar vehicle.
Such vehicles typically have an external windscreen wiper mounted in the middle of the windscreen and which is powered by a motor mounted on the inside of the windscreen. The most important part of the windscreen to demist and defrost is the middle part in order for the driver to have a good view of the road or field or any equipment mounted on the front of the vehicle (e.g. a front-loader).
It is known for tractor cabs to have a console arrangement either side of the steering wheel which includes vents for distributing air onto the windscreen and into the cab but such vents have previously not been good at directing air to the middle portion of the screen, especial if the wiper motor interrupts the air stream to the above mentioned windscreen area..
It is an object of the present invention to provide an air distribution system which can conveniently overcome the above problem by supplying air to this middle part of the windscreen.
Thus according to the present invention there is provided a vehicle cab windscreen air distribution system for a windscreen provided with an external windscreen wiper and a windscreen wiper motor mounted on the inside of the windscreen, the distribution system comprising an air distribution housing which at least partially surrounds the wiper motor, the housing defining a passage for the supply of air onto the inside of the windscreen in the vicinity of the motor.
Such a system ensures the supply of air to the middle part of the windscreen in a simple and compact manner. At the same time, the windscreen wiper motor is hidden.
The passage for the supply of air may be defined between a motor housing and part of the air distribution housing.
Alternatively, the passage for the supply of air may be completely defined by the air distribution housing. The present invention is particularly suitable for vehicle cabs which have windscreens can be pivoted to an open position, the motor moving into a position where it is surrounded by the air distribution housing when the windscreen is in its closed position.
The air distribution housing may also included additional outlets spaced from the motor for the discharge of air into the associated vehicle cab.
The present invention will now be described, by way of example only, with reference to the accompanying drawings in which:-
Fig. 1 shows an external perspective view of an air distribution housing in accordance with the invention;
Fig. 2 shows a front view of the housing of Figure 1 ;
Fig. 3 shows a section along line A-A of Figure 2, and
Fig. 4 shows a detail (B) of Figure 3.
Referring to the drawings, a tractor cab is provided with a two-piece windscreen 1 with an upper part 1 a and a lower part lb. A motor housing 2 encloses a wiper motor 2a and a gearing 2b which are mounted on the inside of the upper part of the windscreen l a. A wiper 5 is mounted on the outside of the upper part la of the windscreen and is driven by motor 2a and gearing 2b.
As is well known, the upper part l a of the windscreen is pivotally mounted at its upper edge on the cab so that the windscreen can be pivoted together with the wiper 5, motor 2a, gearing 2b and motor housing 2 to an open position by turning a fastening lever 6 to its open position. The upper part l a of the windscreen 1 is supported in its open position by a gas spring (not shown).
In accordance with the present invention, an air distribution housing 3 is provided which contains a lower part 4 and which partly surrounds the wiper motor housing 2 and defines a passage 3 a through which air can flow to the windscreen 1 a as shown by the arrow X in Figures 3 and 4. As can be seen this air flow exits the housing 3 via the gap 3b between the motor housing 2 and the top edge 3c of housing 3 around the pivot of the wiper and thus air is guided to the windscreen on the inside of the cab. This ensures that the air reaches the middle part of the windscreen as required. Air also exits from the lower part 4 as shown by arrow Y via outlet 9 the flow through which is controlled by flaps 8 which can be moved by the tractor driver or the air ventilating/conditioning system between the full and dotted line positions of Figures 3 and 4 to regulate air flow into the cab. Further some slots 7 may be provided in the lower part 4 of the air distribution housing which may be a separate component from the upper housing part 3 along a break line 4a to allow easy access for servicing etc.
Figure 3 also shows the upper part la of the windscreen in its open position la' in which the motor housing 2 has been moved away from the air distribution housing 3. Although in the arrangement described above, the air is directed between the outer surface of the motor housing 2 and the inside surface of the air distribution housing 3, the air passage may be define completely by the housing 3 preferably by providing a further inner surface 3d to the housing 3 as indicated in dotted detail in Figure 4. This alternative arrangement serves to shield the motor to a certain extent from the effects of the hot air which may be passed through passage 3 a.
The invention can also be used on a one-piece non-opening windscreen, where it is not necessary, to provide a quick defrosting of the middle part of the windscreen around the windscreen wiper mounting.

Claims

1. Vehicle cab windscreen air distribution system for a windscreen provided with an external windscreen wiper and a windscreen wiper motor mounted on the inside of the windscreen, the distribution system comprising an air distribution housing which at least partially surrounds the wiper motor, the housing defining a passage for the supply of air onto the inside of the windscreen in the vicinity of the motor.
2. An air distribution system according to claim 1 in which the passage for the supply of air is defined between a motor housing and part of the air distribution housing.
3. An air distribution system according to claim 1 in which the passage for the supply of air is completely defined by the air distribution housing.
4. An air distribution system according to any one of claims 1 to 3 in which the motor is mounted on a portion of the windscreen which can be pivoted to an open position, the motor moving into a position where it is surrounded by the air distribution housing when the windscreen is in its closed position.
5. An air distribution system according to any one of the claims 1 to 4 in which the air distribution housing also includes additional outlets spaced from the motor for the discharge of air into the associated vehicle cab.
6. A tractor cab including an air distribution system according to any one of claims 1 to 5.
PCT/EP2012/050353 2011-02-17 2012-01-11 Windscreen air distribution system WO2012110266A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US14/000,267 US9616850B2 (en) 2011-02-17 2012-01-11 Windscreen air distribution system
EP12700952.0A EP2675636B1 (en) 2011-02-17 2012-01-11 Windscreen air distribution system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1102756.2 2011-02-17
GBGB1102756.2A GB201102756D0 (en) 2011-02-17 2011-02-17 Windscreen air distribution system

Publications (1)

Publication Number Publication Date
WO2012110266A1 true WO2012110266A1 (en) 2012-08-23

Family

ID=43859549

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/050353 WO2012110266A1 (en) 2011-02-17 2012-01-11 Windscreen air distribution system

Country Status (4)

Country Link
US (1) US9616850B2 (en)
EP (1) EP2675636B1 (en)
GB (1) GB201102756D0 (en)
WO (1) WO2012110266A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2529834A (en) * 2014-09-03 2016-03-09 Norman Trust Ventilation of vehicles

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6969985B2 (en) * 2017-11-14 2021-11-24 トヨタ自動車株式会社 Vehicle air conditioner

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8620314U1 (en) * 1986-07-29 1986-09-18 Mulag Fahrzeugwerk Heinz Wössner GmbH u. Co KG, 7605 Bad Peterstal-Griesbach Side door for automobiles
US20060211358A1 (en) * 2005-03-07 2006-09-21 Deere & Company, A Delaware Corporation Integrated duct and monitor housing
WO2010066877A1 (en) * 2008-12-11 2010-06-17 Agco Gmbh Tractor cab heating and ventilating systems

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB960974A (en) 1962-05-11 1964-06-17 Lucas Industries Ltd Vehicle windscreen cleaning apparatus
DE1555017A1 (en) 1965-05-10 1970-10-01 Aldo Candusso Protected and concealed built-in wipers for motor vehicles
US4007958A (en) * 1975-04-09 1977-02-15 Caterpillar Tractor Co. Pivoted window for cab of motor vehicle
JPS5858987U (en) * 1981-10-16 1983-04-21 本田技研工業株式会社 Wiper switch device for motorcycles, etc.
WO1993008997A1 (en) * 1991-10-28 1993-05-13 Caterpillar Inc. An air circulatory system for an enclosure
JPH11321568A (en) 1998-05-15 1999-11-24 Fuji Heavy Ind Ltd Wiper motor cooling structure
US6382712B1 (en) * 2001-06-19 2002-05-07 Deere & Company Windshield defrosting air duct for a work vehicle
US7676880B2 (en) 2002-05-15 2010-03-16 Trico Products Corporation Direct drive windshield wiper assembly
US7681630B2 (en) * 2004-12-07 2010-03-23 Cnh America Llc HVAC system for a work vehicle
GB2466765A (en) * 2008-10-27 2010-07-07 Agco Gmbh Tractor HVAC system ducting and air filter arrangement
IT1401209B1 (en) * 2010-07-02 2013-07-12 Cnh Italia Spa CABIN FOR AGRICULTURAL VEHICLE EQUIPPED WITH A VENTILATION AND AIR-CONDITIONING SYSTEM

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8620314U1 (en) * 1986-07-29 1986-09-18 Mulag Fahrzeugwerk Heinz Wössner GmbH u. Co KG, 7605 Bad Peterstal-Griesbach Side door for automobiles
US20060211358A1 (en) * 2005-03-07 2006-09-21 Deere & Company, A Delaware Corporation Integrated duct and monitor housing
WO2010066877A1 (en) * 2008-12-11 2010-06-17 Agco Gmbh Tractor cab heating and ventilating systems

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2529834A (en) * 2014-09-03 2016-03-09 Norman Trust Ventilation of vehicles
GB2529834B (en) * 2014-09-03 2019-04-17 The Norman Trust Ventilation of vehicles

Also Published As

Publication number Publication date
US9616850B2 (en) 2017-04-11
GB201102756D0 (en) 2011-03-30
EP2675636B1 (en) 2018-12-05
EP2675636A1 (en) 2013-12-25
US20140087647A1 (en) 2014-03-27

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