EP0615497A4 - Backing for windscreen wiper blades. - Google Patents
Backing for windscreen wiper blades.Info
- Publication number
- EP0615497A4 EP0615497A4 EP9292924509A EP92924509A EP0615497A4 EP 0615497 A4 EP0615497 A4 EP 0615497A4 EP 9292924509 A EP9292924509 A EP 9292924509A EP 92924509 A EP92924509 A EP 92924509A EP 0615497 A4 EP0615497 A4 EP 0615497A4
- Authority
- EP
- European Patent Office
- Prior art keywords
- backing
- flanges
- groove
- blade
- pair
- 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.)
- Withdrawn
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
- B60S1/38—Wiper blades
-
- 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
- B60S2001/3817—Means of supporting or holding the squeegee or blade rubber chacterised by a backing strip to aid mounting of squeegee in support
- B60S2001/3818—Means of supporting or holding the squeegee or blade rubber chacterised by a backing strip to aid mounting of squeegee in support the backing strip being a channel-like element, e.g. not continuous
-
- 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
- B60S2001/3837—Wiper blades characterised by the squeegee or blade rubber or wiping element characterised by cross-sectional shape with more than one wiping edge or lip
Definitions
- This invention relates to a backing for windscreen wiper blades and relates particularly, but not exclusively, to such for motor vehicles.
- This backing has an open channel at a bottom of the backing into which a blade insert can be received.
- a first pair of the flanges is on the sides of the backing and situated directly adjacent the channel. These flanges are for a first width wiper arm.
- the backing then has a second open channel at the top into which a . blade insert can be received.
- the second pair of flanges is also on the side of the backing and situated directly adjacent the second channel.
- the second flanges are for a second width wiper arm.
- the blade insert is inserted into the appropriate open channel adjacent the required sized width pair of flanges.
- a wiper arm has claws into which the backing can be inserted and the head space above and between the claws is not sufficient to simply have a single channel for the blade insert and have the backing fitted directly with the claws for either a first width or second width wiper arm as the body of the backing cannot be received in that head space.
- the backing must be inverted if it is to be associated with the other width wiper arm, and the blade insert fitted in the other open channel.
- a backing of the above type is extremely troublesome and fiddly to fit. Moreover, it uses excessive plastics material in its construction.
- the present invention has been devised to at least attempt to overcome the aforementioned problems.
- a backing for a windscreen wiper blade said backing having a groove for receiving a blade insert and mounting means for permitting the backing to be held by a blade frame
- said mounting means comprising a first pair of flanges over which claws from a blade frame can be received, and spaced from said first pair of flanges, a second pair of flanges over which claws from a smaller width blade frame can be received, the first pair of flanges being spaced near the bottom of the groove, and the second pair of flanges being spaced below the first pair of flanges, whereby a blade element received in said groove can be held by said backing for two different sized width blade frames.
- first pair of flange means is integral with said backing, and said second pair of flange means is separate and retractably received to said backing so it can be extended when required.
- Figure 1 is an end view of a prior art arrangement
- Figure 2 is an end view of a further prior art arrangement
- Figure 3 is an end view of one example of a preferred backing
- Figure 4 is a perspective view of the backing shown in Figure 3;
- Figure 5 is an end view of a further example of a preferred backing;
- Figure 6 is a perspective view of the backing shown in Figure 5.
- Figure 7 is an end view of a further example of the preferred backing fitted in a smaller sized blade frame
- Figure 8 is a view similar to that of Figure 7 showing the embodiment fitted to a large sized blade frame
- Figure 9 is an end view of a further example similar to that shown in Figures 7 and 8 but for use with double blade elements;
- Figures 9 through 12 are views similar to that in figures 7, 8 and 9 but showing a modification
- Figure 13 is an end perspective view of an end cap
- Figure 14 is a side view of the embodiment shown in Figures 7 through 8 fitted with the end cap;
- Figure 15 is a transverse cross-sectional view through Figure 14 along section line A-A showing how the end cap is located.
- FIG. 1 where a prior art arrangement is shown, it can be seen that there are provided two blade elements 1 made of synthetic rubber material which is known in the windscreen wiper blade arts.
- the general shape of the transverse cross-section of the blade elements 1 is well known.
- the blade elements 1 are, in turn, held in a backing 3 which is made of a suitable plastics material such as of polycarbonate.
- the backing 1 has a pair of blade element receiving grooves 5 therein.
- the blade elements 1 are such that they can be slid along the grooves 5 so as to hold the blade elements 1 relative to the backing 3.
- the backing 3 is provided with holding means 7 in the form of a pair of flanges 11 with a pair of grooves 9.
- the grooves 9 are spaced behind the grooves 5 and the width of the backing 3 between the free ends of the flanges 11 corresponds with a predetermined width. In the prior art, this width has been either 6mm or 8mm although other widths are possible.
- a blade frame 11 is provided with claws 13 which are pre-made with a set distance between the free ends thereof.
- the spacing between the claws 13 is suitably sized and in the order of, say, 7mm.
- the spacing between the claws 13 is suitably sized, say in the order of 9mm.
- the free ends of the claws are received within the grooves 9 to hold the backing 3 to the blade frame 11. Accordingly, for replacement purposes, it is necessary to stock appropriately sized backings 3 depending on whether the blade frame 11 is either for 6mm or 8mm backing.
- the stocking of the suitable sized backings 3 has its obvious disadvantages.
- FIG 2 there is shown a prior art backing which is disclosed in Australian Patent specification No. 78133/75 by Trico Products Corp.
- a body 2 with a first channel 4 at a top of the backing body 2 and a second channel 6 at the bottom of the backing body 2.
- a blade insert 1 can be received in either of the channels 4 or 6.
- a first pair of mounting flanges 8 is mounted directly adjacent the open channel 4 for a first width wiper blade arm.
- a second pair of flanges 10 is mounted directly adjacent open channel 6 and is for a second width wiper blade arm.
- Wiper arm 11 has claws 13 which in the case of a smaller width wiper arm 11 fit directly under the pair of flanges 8 to hold the backing relative to the wiper arm 11. In this case, the blade insert is fitted in the open channel 6.
- FIG. 3 and 4 there is shown a backing 3 for a double blade element assembly similar to that shown in the prior art but drawn inverted by 180° .
- the backing 3 has a pair of grooves 5 into which the blade elements 1 can be received and held. The grooves are displaced across the backing from one another.
- the backing 3 then has a first pair of grooves 15 and spaced therefrom, but immediately thereto, a second pair of grooves 17.
- the grooves 15 and 17 are defined by respective first flanges
- the width between the free ends of the second flanges 21 is less than the width between the ree ends of the first flanges 19.
- the spacing between the free ends of flanges 21 can be 6mm and the spacing between the free ends of flanges 19 can be 8mm.
- the spacing between flanges 19 and 21 can be of a suitable size as, for example, 1mm in order to receive the thickness of the claws of the wiper arm.
- the pair of flanges 19 is spaced near the bottom of grooves 5 and the second pair of flanges 21 is spaced below the flanges 19.
- the backing 3 can be utilised in a blade frame 11 which is either sized for 6mm or 8mm backing.
- the claws 13 of the blade frame 11 are engaged over the appropriate ones of the pairs of first flanges 19 or second flanges 21 and into the respective grooves 15 and 16.
- the spacing between the flanges 19 and 21 is such that if the claws 13 are to engage with the flanges 19, they do not interfere with the fitting to the blade frame 11 itself. It should be noted they do not extend substantially into the central body space 23 (see Figure 1) in the blade frame 11.
- the pair of first flanges 19 are arranged substantially parallel to one another and co-planar and the second pair of flanges 21 are arranged substantially parallel to one another and co-planar but spaced from the first pair.
- Figures 5 and 6 is substantially identical to that described in Figures 3 and 4 but here, the backing 3 is arranged for receiving only a single blade element 1. In this connection, the backing 3 has only a single groove 5 for receiving a single blade element 1.
- the backing is otherwise identical with the embodiments described in Figures 2 and 3 and therefore a further description has not been provided.
- Like numerical designations to like parts as shown in Figures 3 and 4 has been repeated in Figures 5 and 6.
- FIG. 7 and 8 The embodiment of Figures 7 and 8 is similar in concept to the previous embodiments except that the first flanges 19 are formed separately to the second flanges 21.
- the second flanges 21 are manufactured from a separate piece of material 30 such as polycarbonate and are retractably received relative to the first flanges 19.
- the second flanges 21 are formed of a generally "I-shaped" transverse cross-sectional extrusion.
- the backing 3 has a further groove means 33 therein opposite groove 5.
- the groove means 33 is closed by flanges 35.
- the extrusion comprising the second flanges 21 and the further flanges 31 can be received in the groove means 33 by sliding the extrusion from one end of the backing 3.
- the width between the free ends of the flanges 35 is approximately equal to the width of the bridging portion 37 between the second flanges 21 and the further flanges 31.
- the distance between the second 8 flanges 21 and the further flanges 31 is sufficient to enable the claws of the blade frame to locate on the inside faces of the second flanges 21 as shown, and clear the outside faces of the first flanges 19.
- Figure 8 shows the embodiment of Figure 7, fitted to a wider width blade frame 11.
- the extrusion comprising the second flanges 21 and further flanges 31 is retracted in the groove means 33 so that the inside faces of the second flanges 21 lie directly engaged against the outside face of the first flanges 19. Accordingly, the depth of the groove means 33 is sufficient to enable the bridging portion 37 of the extrusion to move into the groove means 33 for this purpose.
- FIGS 10, 11 and 12 there are disclosed embodiments similar to that in figures 7, 8 and 9.
- the only difference here being that the separate piece of material 30 is provided with a central generally "T" shaped recess 32.
- the recess 32 has a leg portion 34 which extends centrally down the bridging portion 37 and head portion 36 which extends within the further flanges 31.
- the recess 32 provides for flexibility of the backing piece 30 and assists with the blade elements 1 in conforming to the curvature of any window onto which they are fitted.
- the end cap 39 can be made of a suitable plastics material, such as polycarbonate, polyethylene, or metal or other suitable material. It can be seen that the end cap 39 is of generally box-shape configuration with an outer end wall 41, a top 43, two side walls 45 and a pair of spaced bottom flanges 47. The bottom flanges 47 are spaced to provide a channel 49 between the inside edge faces of the bottom flanges 47.
- the channel 49 is of a width which corresponds approximately to the width of a lowermost portion of the backing 3 adjacent the blade element 1.
- the width 51 between the inside faces of the side walls 45 corresponds approximately to the width of the outer edges between the first flanges 19.
- the depth 53 between the inside faces of the bottom flanges 47 and the top 43 is sufficient to enable the extrusion comprising the second pair of flanges 21 and the further flanges 31 to be extended as shown in dotted line in Figure 15, whilst the bottom flanges 47 still remain at the lower end of the backing 3 adjacent where the blade element 1 is fitted.
- the width of channel 49 and the width 51 are chosen to be a press-fit or force-fittable about the backing 3 in the relationship shown in Figure 15.
- the end-cap 39 is made of metal, then it can be crimped in the position shown in Figure 15 over each end of the backing 3.
- the end cap 39 will prevent the' extrusion comprising the second flanges 21 and further flanges 31 from sliding within groove 33 and keep that extrusion retained relative to the backing 3.
- the arrangement is such that it can be utilised with narrow- width blade frames 11 or wider width blade frames 11. Modifications may be made to the present invention as would be apparent to persons skilled in this art.
- a corresponding number of suitably sized width pairs of flanges may be provided, each spaced from one another such that the largest width is closest to the blade elements 1 with the smallest width pair of flanges being furthermost from the blade elements 1.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Knives (AREA)
Abstract
Description
Claims
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AUPK999391 | 1991-12-13 | ||
AU9993/91 | 1991-12-13 | ||
AU10816/92 | 1992-02-07 | ||
AU10816/92A AU629785C (en) | 1991-12-13 | 1992-02-07 | Backing for windscreen wiper blades |
AU2095/92 | 1992-04-28 | ||
AUPL209592 | 1992-04-28 | ||
PCT/AU1992/000660 WO1993011979A1 (en) | 1991-12-13 | 1992-12-11 | Backing for windscreen wiper blades |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0615497A1 EP0615497A1 (en) | 1994-09-21 |
EP0615497A4 true EP0615497A4 (en) | 1994-10-19 |
Family
ID=27151861
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP9292924509A Withdrawn EP0615497A4 (en) | 1991-12-13 | 1992-12-11 | Backing for windscreen wiper blades. |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0615497A4 (en) |
WO (1) | WO1993011979A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6742217B1 (en) * | 2002-12-10 | 2004-06-01 | Richard Elkins | Readily replaceable automotive wiper blade |
CN105292070A (en) * | 2015-11-25 | 2016-02-03 | 都昌县业达汽车零部件有限公司 | Signal-adhesive tape windshield wiper back plate |
CN105383447A (en) * | 2015-11-25 | 2016-03-09 | 都昌县业达汽车零部件有限公司 | Windshield wiper framework with double rubber strips |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3855664A (en) * | 1973-02-01 | 1974-12-24 | Anderson Co | Wiper blade refill element |
US3820188A (en) * | 1973-02-01 | 1974-06-28 | Anderson Co | Windshield wiper blade structure |
US3879794A (en) * | 1974-02-22 | 1975-04-29 | Trico Products Corp | Windshield wiper blade assembly |
US3911523A (en) * | 1974-03-11 | 1975-10-14 | Anderson Co | Universal refill |
GB2234161A (en) * | 1989-07-14 | 1991-01-30 | Anthony Kenneth Flavel Fearn | Wiper blade assembly |
-
1992
- 1992-12-11 EP EP9292924509A patent/EP0615497A4/en not_active Withdrawn
- 1992-12-11 WO PCT/AU1992/000660 patent/WO1993011979A1/en not_active Application Discontinuation
Non-Patent Citations (2)
Title |
---|
No further relevant documents disclosed * |
See also references of WO9311979A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP0615497A1 (en) | 1994-09-21 |
WO1993011979A1 (en) | 1993-06-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19940712 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE |
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A4 | Supplementary search report drawn up and despatched |
Effective date: 19940905 |
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AK | Designated contracting states |
Kind code of ref document: A4 Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE |
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17Q | First examination report despatched |
Effective date: 19950130 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19960110 |