GB2347731A - Windscreen wiper head - Google Patents

Windscreen wiper head Download PDF

Info

Publication number
GB2347731A
GB2347731A GB0004907A GB0004907A GB2347731A GB 2347731 A GB2347731 A GB 2347731A GB 0004907 A GB0004907 A GB 0004907A GB 0004907 A GB0004907 A GB 0004907A GB 2347731 A GB2347731 A GB 2347731A
Authority
GB
United Kingdom
Prior art keywords
projection
washer
head
windscreen wiper
drive head
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
GB0004907A
Other versions
GB0004907D0 (en
GB2347731B (en
Inventor
Alistair Duncan Robertson
Michael Matthews
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Trico Products Corp
Original Assignee
Trico Products Corp
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 Trico Products Corp filed Critical Trico Products Corp
Publication of GB0004907D0 publication Critical patent/GB0004907D0/en
Publication of GB2347731A publication Critical patent/GB2347731A/en
Application granted granted Critical
Publication of GB2347731B publication Critical patent/GB2347731B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • B60S1/04—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
    • B60S1/3425—Constructional aspects of the arm
    • B60S1/3436—Mounting heads
    • 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
    • B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
    • B60S1/34—Wiper arms; Mountings therefor
    • B60S1/3425—Constructional aspects of the arm
    • B60S1/3445—Joints between elements
    • B60S1/3459—Joints between elements the element being a mounting head and a shaft

Abstract

A pressed sheet windscreen wiper drive head is deformed at one end to create a conical projection 5 which has a DIN taper equivalent to that of the head of a drive shaft 9 from the windscreen wiper motor. The projection is located in a surrounding depression 6 so that a washer 7 and a locating nut 8 (Fig. 1) can be partly hidden. The washer internally has the same DIN taper as the head and the projection and is retained by turning over the upper end of the projection to form a lip 13 which seats into a recess 14. It is then held onto the drive head during subsequent processing.

Description

Improvements relating to Windscreen Wiper Heads One end of a drive head of a windscreen wiper assembly is normally mounted onto a drive shaft of a drive motor.
The connection of the drive shaft onto the head is by means of a DIN taper at the tip of the drive shaft which fits into a complementarily shaped recess in the head. If the head is cast from metal sheet, then the location of the tapered head to the drive shaft needs to be suitably robust.
According to the present invention there is provided a windscreen wiper drive head pressed from a sheet of metal and having at one end a locating portion where the metal is deformed to create a projection defining a tapered passageway for receipt of a DIN tapered drive shaft head, and a gripping washer located about the projection, the washer having an interna passageway formed to the same DIN taper as the projection, the upper end of the projection being turned over to form a lip over the top face of the washer to retain the washer.
This arrangement provides a suitably robust mounting for the DIN tapered drive shaft head within the pressed out tapered passageway and the washer grips around the projection when a nut is tightened onto the drive shaft.
Since the washer is retained by the turned upper end of the projection, the washer cannot become detached during subsequent preparation or assembly stages.
Ideally the washer will have a recess in its top face to receive the lip on the projection.
The invention may be performed in various ways and embodiments thereof will now be described, by way of example, with reference to the accompanying drawings, in which: Figure 1 is a plan view of a windscreen wiper drive head of this invention ; Figure 2 is a perspective view of an alternative form of drive head of the invention ; and Figure 3 is a vertical cross-section through part of the drive head of Figure 2.
The drive head for a windscreen wiper assembly as shown in Figure 1 is pressed from sheet steel to define two side walls 1 and 2 and adjoining top wall 3. At one end holes 4 are provided in the side walls 1 and 2 to receive a pivot pin for a wiper arm retainer which will be located onto the drive head. At the other end the sheet metal is deformed to create a conical projection 5 which has a DIN taper equivalent to that of the head of a drive shaft from the windscreen wiper motor. As shown in Figure 2 the projection 5 can be located in a surrounding depression 6 so that a washer 7 and a locating nut 8 can be partly hidden away.
The drive shaft 9 is shown in Figure 3 and has a splined conical drive head 10 and a screw threaded end 11.
When the tapered head 10 is located into the projection 5, the nut 8 is screwed onto the threaded end 11 to drive the washer 7 into engagement with the projection 5 so as to lock the drive shaft 9 securely to the drive head. The washer 7 has a passageway 12 which is also formed to the same DIN taper as the head 10 and of the projection 5. The washer 7 is retained in place by turning over the upper end of the projection 5 to form a lip 13 which seats into a recess 14.
It is then held onto the drive head at all times, such as during painting or other preparation stages and during final assembly to the drive head. If desired an additional flat washer 15 could be provided over the top of the washer 7 and the lip 13. Alternatively or additionally the washer 7 could be in two sections, with the upper section incorporating the recess 14 which receives the lip 13.

Claims (4)

  1. CLAIMS 1. A windscreen wiper drive head pressed from a sheet of metal and having at one end a locating portion where the metal is deformed to create a projection defining a tapered passageway for receipt of a DIN tapered drive shaft head, and a gripping washer located about the projection, the washer having an internal passageway formed to the same DIN taper as the projection, the upper end of the projection being turned over to form a lip over the top face of the washer to retain the washer.
  2. 2. A drive head according to Claim 1, wherein the washer has a recess in its top face to receive the lip on the projection.
  3. 3. A drive head according to Claim 1 or Claim 2, including a flat washer located over the top of the gripping washer and retaining lip.
  4. 4. A windscreen wiper drive head substantially as herein described with reference to the accompanying drawings.
GB0004907A 1999-03-12 2000-03-02 Improvements relating to windscreen wiper heads Expired - Fee Related GB2347731B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB9905666.5A GB9905666D0 (en) 1999-03-12 1999-03-12 Improvements relating to wiper windscreen heads

Publications (3)

Publication Number Publication Date
GB0004907D0 GB0004907D0 (en) 2000-04-19
GB2347731A true GB2347731A (en) 2000-09-13
GB2347731B GB2347731B (en) 2003-02-26

Family

ID=10849467

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB9905666.5A Ceased GB9905666D0 (en) 1999-03-12 1999-03-12 Improvements relating to wiper windscreen heads
GB0004907A Expired - Fee Related GB2347731B (en) 1999-03-12 2000-03-02 Improvements relating to windscreen wiper heads

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB9905666.5A Ceased GB9905666D0 (en) 1999-03-12 1999-03-12 Improvements relating to wiper windscreen heads

Country Status (1)

Country Link
GB (2) GB9905666D0 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004018270A1 (en) * 2002-08-03 2004-03-04 Robert Bosch Gmbh Reinforcing element for a fixing part of a wiper arm

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3428795A1 (en) * 1983-08-04 1985-02-14 Equipements Automobiles Marchal, Issy-Les-Moulineaux, Hauts-de-Seine Connecting head for a window wiper, window wiper and method for manufacturing a connecting head
GB2311209A (en) * 1996-03-23 1997-09-24 Trico Products Corp Windscreen wiper heads
US5894628A (en) * 1994-03-15 1999-04-20 Itt Automotive Europe Gmbh Wiper arm for a windshield wiper mechanism, particularly for motor vehicles
GB2338772A (en) * 1998-06-27 1999-12-29 Trico Ltd Drive shaft connections

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3428795A1 (en) * 1983-08-04 1985-02-14 Equipements Automobiles Marchal, Issy-Les-Moulineaux, Hauts-de-Seine Connecting head for a window wiper, window wiper and method for manufacturing a connecting head
US5894628A (en) * 1994-03-15 1999-04-20 Itt Automotive Europe Gmbh Wiper arm for a windshield wiper mechanism, particularly for motor vehicles
GB2311209A (en) * 1996-03-23 1997-09-24 Trico Products Corp Windscreen wiper heads
GB2338772A (en) * 1998-06-27 1999-12-29 Trico Ltd Drive shaft connections

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004018270A1 (en) * 2002-08-03 2004-03-04 Robert Bosch Gmbh Reinforcing element for a fixing part of a wiper arm
DE10235565B4 (en) * 2002-08-03 2014-05-08 Robert Bosch Gmbh Reinforcement element for a fastening part

Also Published As

Publication number Publication date
GB9905666D0 (en) 1999-05-05
GB0004907D0 (en) 2000-04-19
GB2347731B (en) 2003-02-26

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20100302