GB2055560A - Windscreen wiper arm connector - Google Patents

Windscreen wiper arm connector Download PDF

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Publication number
GB2055560A
GB2055560A GB7929648A GB7929648A GB2055560A GB 2055560 A GB2055560 A GB 2055560A GB 7929648 A GB7929648 A GB 7929648A GB 7929648 A GB7929648 A GB 7929648A GB 2055560 A GB2055560 A GB 2055560A
Authority
GB
United Kingdom
Prior art keywords
projection
cavity
arm
bayonet
connector
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
GB7929648A
Other versions
GB2055560B (en
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.)
Magnatex Ltd
Original Assignee
Magnatex Ltd
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 Magnatex Ltd filed Critical Magnatex Ltd
Priority to GB7929648A priority Critical patent/GB2055560B/en
Publication of GB2055560A publication Critical patent/GB2055560A/en
Application granted granted Critical
Publication of GB2055560B publication Critical patent/GB2055560B/en
Expired legal-status Critical Current

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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
    • B60S1/40—Connections between blades and arms
    • B60S1/4006—Connections between blades and arms for arms provided with a hook-shaped end
    • B60S1/4009—Connections between blades and arms for arms provided with a hook-shaped end comprising a detachable intermediate element mounted on the hook-shaped end
    • B60S1/4016—Connections between blades and arms for arms provided with a hook-shaped end comprising a detachable intermediate element mounted on the hook-shaped end the element being provided with retention means co-operating with the hook-shaped end of the arm
    • B60S1/4019—Connections between blades and arms for arms provided with a hook-shaped end comprising a detachable intermediate element mounted on the hook-shaped end the element being provided with retention means co-operating with the hook-shaped end of the arm the retention means being protrusions or holes
    • 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
    • B60S1/40—Connections between blades and arms
    • B60S1/4083—Connections between blades and arms for arms provided with a flat end
    • B60S1/4087—Connections between blades and arms for arms provided with a flat end the end being provided with protrusions or holes
    • 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
    • B60S1/40—Connections between blades and arms
    • B60S1/4006—Connections between blades and arms for arms provided with a hook-shaped end
    • B60S1/4009—Connections between blades and arms for arms provided with a hook-shaped end comprising a detachable intermediate element mounted on the hook-shaped end
    • B60S2001/4029—Connections between blades and arms for arms provided with a hook-shaped end comprising a detachable intermediate element mounted on the hook-shaped end the element being able to receive arms of different widths

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)

Abstract

A connector (5) for selectively coupling a windscreen wiper blade holder to the end of a wiper arm either of the bayonet or hook type comprises a body portion (7), conveniently a plastics moulding, having cavity (8) extending thereinto for receiving a bayonet arm end (9), side walls (10) defining a channel and projection (13) for receiving and securing a hooked arm end (12), and a leaf spring (16) retained in cavity (8) by a tongue at its inner end engaging in an aperture (18) in the bottom wall of the cavity (8), the spring (16) being biassed to press against the upper wall of the cavity to urge a tongue (21) at its other end into a hollow (23) in the underside of the bayonet arm end (9) and also hold a projection (24) on the arm end in a slot (22) in said upper wall (20). <IMAGE>

Description

SPECIFICATION Windscreen wiper arm connector The invention relates to a universal connector for selectively coupling a windscreen wiper blade holder to the end of a wiper arm of either the bayonet or hook type.
The specification of United States Patent No.
4057869 describes such a universal connector which is constructed as a unitary moulding of a plastics material comprising a body portion having an elongate cavity or socket extending thereinto one end of the body portion for receiving a bayonet arm end, and having side walls projecting beyond the external surface of the body portion and defining with said external surface a channel for receiving a hooked arm end. The moulding includes two resilient tab portions one of which has an external projection for detachably securing a hooked arm end to the connecter and the other of which has an opening to receive a retaining projection on the bayonet arm end when inserted into the cavity.
The present invention has for an object to provide an improved construction of universal connector which is simpler to fabricate and employs a separate leaf spring for retaining the bayonet arm end.
The present invention consists in a universal connector for selectively coupling a windscreen wiper blade holder to the end of a wiper arm of either the bayonet or hook type, comprising a body portion having an elongate cavity extending thereinto from one end of the body portion and into which a bayonet arm end is to be received and detachably secured, and having side walls projecting beyond the external surface of the body portion, at least part-way therearound, and defining with said external surface a channel for receiving a hooked arm end and including means for detachably securing a hooked arm end to the connector, characterised in that a leaf spring extends along said cavity, the inner end of said cavity being shaped to hold the inner end of the leaf spring against a wall of the cavity with a retaining projection thereon engaged in an aperture in said wall, and the spring being biassed to press against the opposite wall of the cavity adjacent its open end, an aperture being provided in said opposite wall for receiving a projection on a bayonet arm end when inserted in the cavity and pressed towards said opposite wall by the spring.
Preferably, the aperture of said opposite wall is in the form of a slot and the leaf spring is provided with a projection adapted to engage in a hollow in the underside of the retaining projection on a bayonet arm end to hold the projection adjacent the inner end of the slot (i.e. the end remote from the open end of the cavity), the projection engaging against the outer end of the slot if the hollow at its underside should accidentally become detached from the projection on the spring. This structure not only provides double security against accidental detachment of the bayonet arm end from the blade holder but also facilitates the operation of detaching the bayonet arm end from the connector by depressing the outer end of the leaf spring.
A further feature of the invention consists in form ing the side walls around the body portion with a stepped formation to provide two channels of different widths to receive hooked arm ends of different widths, thereby increasing the universality of the connector.
The body portion and side walls may be integrally moulded of a plastics material.
In order that the invention may be more clearly understood, reference will now be made to the accompanying drawings, in which: Fig. 1 is a perspective view of a windscreen wiper fitted with a connector according to the present invention, Fig. 2 is a perspective view of the connector from above and showing the ends of hook and bayonet type wiper arms in exploded relation to the connector, Fig. 3 is an underside perspective view of the connector, Fig. 4 is a front end view of the connector, Fig. 5 is a longitudinal section through the connector, and Fig. 6 is a similar view to Fig. 5 with a bayonet arm end inserted therein.
Referring to the drawings, Fig. 1 shows a conventional windscreen wiper comprising a blade holder consisting of two yokes 1 which hold the squeegee element 2 in known manner and are interconnected by a bridge piece 3 having a channel formation 4 at its central region between the walls of which a connector 5 is pivotally secured by a rivet 6. The construction of the wiper blade and its holder may take other forms without departing from the scope of this invention.
The connector 5 is conveniently moulded of a plastics material, such as polycarbonate, with a body portion 7 having an elongate cavity 8 extending thereinto from one end of the body portion for receiving the end of a wiper arm of the bayonet type as represented at 9. The body portion has side walls 10 projecting beyond the external surface of the body portion 7, at least part-way therearound as shown. Step portions 11 are formed at the junctions of the side walls 10 and the body portion along the upper surface and around the front end thereof.
Thereby two channels of different widths, defined respectively by the spacing between side walls 10 and between steps 11 and the contoured external surface of the body portion are formed around the exterior of the body portion for alternatively receiving the ends of wiper arms of the hook type, as indicated at 12 of different widths. The under-surface of the body portion is provided with a projection 13 adapted to flex the limbs of the hook apart and thereby engage in an aperture 14 in the hooked arm end to detachably secure the arm end to the connector. The connector is formed with a transverse aperture 15 for secuirng it to the wiper blade holder by the rivet 6.
Fitted within the cavity 8 is a metal leaf spring 16 which is retained therein by a struck-up tongue 17 near its inner end engaging in an aperture 18 in the bottom wall of the cavity 8. Maintanance of engagement of the tongue 17 in the aperture 18 is ensured by the inner end of the leaf spring 16 being held against the bottom wall of the cavity by projec tion 19 at its inner end. The leaf spring is shaped so that its outer end is biassed towards the upper wall 20 of the cavity with its extreme end projecting therebeyond so that it is accessible to be depressed.
Adjacent its outer end the leaf spring is provided with a struck-up tongue 21 which normally extends into a slot 22 formed in the upper wall 20. When a bayonet arm end 9 is inserted into the cavity 8 between the leaf spring and the wall 20, the tongue 21 engages in the hollow 23 in the underside of the retaining projection 24 formed up in the arm end.
The leaf spring resiliently holds the projection 24 in the slot 22 at its inner end as shown in Fig. 6 To detach the wiper arm 9, the free end of the leaf spring is depressed, thereby allowing the tongue 21 to move to the outer end of the slot 22 where it will be retained until released by further depressing the leaf spring 16 either directly by hand or by pivotting the arm about the fulcrum between its free end and the upper wall 20 of the cavity.

Claims (5)

1. A universal connector for selectively coupling a windscreen wiper blade holder to the end of a wiper arm of either the bayonet or hook type, comprising a body portion having an elongate cavity extending thereinto from one end of the body portion and into which a bayonet arm end is to be received and detachably secured, and having side walls projecting beyond the external surface of the body portion, at least part-way therearound, and defining with said external surface a channel for receiving a hooked arm end and including means for detachably securing a hooked arm end to the con nector, characterized in that a leaf spring extends along said cavity, the inner end of said cavity being shaped to hold the inner end of the leaf spring against a wall of the cavity with a retaining projection thereon engaged in an aperture in said wall, and the spring being biassed to press against the opposite wall of the cavity adjacent its open end, an aperture being provided in said opposite wall for receiving a projection on a bayonet arm end when inserted in the cavity and pressed towards said opposite wall by the spring.
2. A connector as claimed in claim 1, characterized in that the aperture in said opposite wall is in the form of a slot and the leaf spring is provided with a projection adapted to be urged into said slot.
3. A connector as claimed in claim 2, in combination with a wiper arm of the bayonet type having a projection on one face of the bayonet arm end which forms a hollow in the other face of the arm end, characterized in that the projection on the spring is adapted to engage in the hollow in said bayonet arm end to hold the projection on said arm end adjacent the inner end of the slot, the arm end being resisted from disengagement from the connector, if the projection on the spring should accidentally become detached from said hollow, by the projection thereon engaging against the outer end of the slot.
4. A connector as claimed in claim 1 or 2, characterized in that the side walls around the body portion have a stepped formation providing channels of dif ferentwidths to receive hooked arm ends of different widths.
5. A universal wiper arm connector constructed substantially as hereinbefore described with reference to the accompanying drawings.
GB7929648A 1979-08-24 1979-08-24 Windscreen wiper arm connector Expired GB2055560B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7929648A GB2055560B (en) 1979-08-24 1979-08-24 Windscreen wiper arm connector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7929648A GB2055560B (en) 1979-08-24 1979-08-24 Windscreen wiper arm connector

Publications (2)

Publication Number Publication Date
GB2055560A true GB2055560A (en) 1981-03-11
GB2055560B GB2055560B (en) 1983-05-05

Family

ID=10507429

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7929648A Expired GB2055560B (en) 1979-08-24 1979-08-24 Windscreen wiper arm connector

Country Status (1)

Country Link
GB (1) GB2055560B (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2119637A (en) * 1982-04-01 1983-11-23 Trico Folberth Ltd Connectors for pivotally connecting wiper arms to wiper blades
US4443907A (en) * 1982-10-21 1984-04-24 Tridon Limited Combination windshield wiper clips
GB2156666A (en) * 1984-04-02 1985-10-16 Fister Spa Connector for connecting a windscreen wiper blade to wiper arms of differing dimensions
EP0350550A1 (en) * 1988-07-12 1990-01-17 Liang-An Chen Connector for connecting a wiper blade with a wiper arm
US5289608A (en) * 1991-10-29 1994-03-01 Alberee Product Inc. Windshield wiper frame connector which accomodates different size wiper arms
US5332328A (en) * 1993-08-26 1994-07-26 Yang Ming Tung Universal windshield wiper arm connector for multiple wiper arms
US5392487A (en) * 1993-12-15 1995-02-28 Yang; Ming-Tung Universal windshield wiper and wiper arm connector
US5715563A (en) * 1996-11-04 1998-02-10 Worktools, Inc. Windshield wiper bracket
US5746534A (en) * 1996-04-05 1998-05-05 Asmo Co., Ltd. Clip for windshield wiper blade

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2119637A (en) * 1982-04-01 1983-11-23 Trico Folberth Ltd Connectors for pivotally connecting wiper arms to wiper blades
US4443907A (en) * 1982-10-21 1984-04-24 Tridon Limited Combination windshield wiper clips
GB2156666A (en) * 1984-04-02 1985-10-16 Fister Spa Connector for connecting a windscreen wiper blade to wiper arms of differing dimensions
EP0350550A1 (en) * 1988-07-12 1990-01-17 Liang-An Chen Connector for connecting a wiper blade with a wiper arm
US5289608A (en) * 1991-10-29 1994-03-01 Alberee Product Inc. Windshield wiper frame connector which accomodates different size wiper arms
US5332328A (en) * 1993-08-26 1994-07-26 Yang Ming Tung Universal windshield wiper arm connector for multiple wiper arms
US5392487A (en) * 1993-12-15 1995-02-28 Yang; Ming-Tung Universal windshield wiper and wiper arm connector
US5746534A (en) * 1996-04-05 1998-05-05 Asmo Co., Ltd. Clip for windshield wiper blade
US5715563A (en) * 1996-11-04 1998-02-10 Worktools, Inc. Windshield wiper bracket

Also Published As

Publication number Publication date
GB2055560B (en) 1983-05-05

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19940824