GB2083742A - Carrier for a windscreen wiper - Google Patents
Carrier for a windscreen wiper Download PDFInfo
- Publication number
- GB2083742A GB2083742A GB8101500A GB8101500A GB2083742A GB 2083742 A GB2083742 A GB 2083742A GB 8101500 A GB8101500 A GB 8101500A GB 8101500 A GB8101500 A GB 8101500A GB 2083742 A GB2083742 A GB 2083742A
- Authority
- GB
- United Kingdom
- Prior art keywords
- carrier according
- stem
- carrier
- end portion
- wiper
- 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- Withdrawn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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pivots And Pivotal Connections (AREA)
Abstract
A carrier for a windscreen wiper comprises a yoke 10 provided with pin 14 for connecting it to a wiper arm, a support member 15 for supporting a wiper blade and pressing it against the windscreen, and end members 21, 22 adjustably mounted in yoke 10, the arrangement being such that wiper blades of different length may be fitted in the carrier. The side walls of yoke 10 may be provided with projections 27 which engage complementary recesses 28 in the side walls 25, 26 of the end members in snap-fitting manner. Alternatively, a pin-and-hole arrangement 30, 31, see Figure 7 may be used. In a modification, see Figure 8 instead of adjustable end members, the yoke is provided with lines of weakness 40 and claws 24'. <IMAGE>
Description
SPECIFICATION
Carrier for a windscreen wiper
The present invention relates to a carrier for a windscreen wiper. The carrier of a windscreen wiper for a motor vehicle is normally an elongate metal
member which is detachably connectable to an arm which in turn is more permanently attached to a
motor on the motor vehicle. The carrier has means for attachment to a wiper blade which in turn is an elongate piece of resiliently flexible material, nor
mally rubber, which is strengthened by a steel
backing strip. The rubber blades get worn in the course of service and need to be replaced.Replace
ment blades are normally sold ready-attached to a carrier, mainly for the reason that it is a comparative
ly easy operation to change a complete windscreen wiper comprising carrier and blade, while it is rather
more difficult to fit a blade to a carrier where it has to
be supported at each end and at intermediate points.
However the differences from one motor vehicle to
another mean that wiper replacements have to be
stocked in a great number of sizes which is a difficult
retailing problem and adds to the expense of the
replacement unit.
The invention is aimed at reducing the number of
carriers required to cover the full range of windscreen wipers.
In accordance with the invention there is provided
a carrier for a windscreen wiper comprising a rigid
bowed stem with means for engaging a wiper arm
and having a chord length corresponding generally with the length of a wiper blade, socket means at
each tip for receiving a respective end of a wiper
blade, support means extending from the stem towards the chord for engaging a wiper blade at at
least two points intermediate of the tips, the support
means comprising respective retainers for engaging
with a blade at the said points to resist lateral
bowing of a fitted blade and to provide resilient force
to press such blade against a windscreen, wherein
the socket means are constructed to allow the fitting
of blades of a plurality of different lengths.
Preferably the support means comprise resilient
arms. However they could be provided e.g. by rigid
arms with a spring connection to the stem. The stem
may be of channel shape, open to the chord. It may
have a central aperture fitted with a pin for receiving e wiper arm tip in the normal way and the support
means may comprise a member having a pair of
spring arms joined by generally parallel webs
formed to seat within the aperture. The webs may
each have a recess formed to snap-engage with the
pin to hold the support member in position.
In the preferred case, the end portions of the stem
are separate from a main stem portion and are
telescopically received by the main stem portion,
each end of the main stem portion and its corres
ponding end portion comprising cooperating means
for locking the end portion in one of a plurality of
predetermined positions to adjust the effective
length of the stem. Each stem end portion may be of
channel shape and received within the channel of
the main stem portion, the latter comprising at least one flange at each end to partly enclose the corresponding end portion.
In the preferred embodiment the locking means comprises a row of equally longitudinally spaced cooperating projections and recesses by which each end portion can snap-engage with the main stem portion in different portions. Preferably the projections project inwards from both channel side walls of the main stem portion to engage with recesses on the side walls of the end portion. Preferably the sockets are formed as dimples.
In an alternative arrangement, the locking means may comprise a movable pin connected to each end of the main portion and receivable in one of a row of holes in each stem end portion.
In another embodiment each tip of the stem may be formed with a plurality of longitudinally spaced socket means separated by lines of weakness to allow unwanted end portions of the stem to be broken off.
Embodiments of the invention are hereafter described with reference to the accompanying drawings, in which:
Figure 1 is a side elevational view of a carrier in accordance with the invention;
Figure 2 is a plan view, viewed from the chord, of the carrier of Figure 1;
Figure 3 is a section along the line Ill-Ill of Figure 1;
Figure 4 is a side elevational view corresponding to Figure 1 of the support member;
Figure 5 is an end view of one of the support blades;
Figure 6 is a perspective view of an end portion of the carrier illustrating the means for adjusting and locking the tip portions;
Figure 7 is a side elevational view of part of a second embodiment of carrier; and
Figure 8 is a view corresponding to Figure 7 of a third embodiment.
In Figures 1 to 6 the carrier shown generally in
Figure 1 comprises a rigid bowed stem 10 of channel shape having a back portion 11 and side walls 12, the channel being open to the chord C. Although the stem may have a curved bow, in this embodiment the bow is formed by rectilinear arms 10a, 10b arranged to extend at a dihedral angle of about 10 from a central connecting portion 10e which is formed with an aperture 13 between the side walls 12. A pin 14 extends cross the aperture in a conventional manner for receiving a wiper arm tip and may be e.g. riveted in place between the side walls 12 which are formed with suitable bores. The main stem member constituted by portions 1 ova, 1 0b and 10c, may be formed of pressed steel.
Mounted within the recess 14 is a support member 15 shown in more detail in Figure 4. This member may also be formed of pressed steel and comprises a pair of spring arms 16, 17 joined by generally parallel webs, one of which is shown at 18. The webs have recesses 19 which are generally keyholeshaped to enable the member 15 to be snapengaged in the aperture 13 around the pin 14. At the end of each arm 16,17 is a fastening means 20, shown in more detail in Figure 5, which is generally of channel shape with claws 21 at the ends of the side walls to engage and hold the steel backing strip of a rubber wiper blade.
The purpose of the support means is to engage the wiper blade at two points intermediate of the tips of the carrier to resist lateral bowing of the fitted blade and to provide the necessary resilient force to press the blade against a curved windscreen over its full length.
End portions ofthe stem 10 are formed as separate members 21,22, one of which 22 is shown in more detail in Figure 6 and will be described. The members 21 and 22 are mirror images one of the other as will be apparent. The member 22 is also preferably of pressed steel and is of channel section corresponding to that of stem portion lob. It is telescopically received into the end of the portion 10b and partially enclosed byflanges 23 in spaced positions at the ends of the portions 10a and 1 Ob as shown more clearly in Figure 2. At the end of the extendable portion 22 is a claw 24 formed by flanges in side walls 25 of the portion 22. The side walls 25 are connected by a web 26.
The portions 22 may be telescopically withdrawn from the main stem portion by equal increments so that the effective length of the carrier can be adjusted to suit different blade sizes required for different motor vehicles. Means are provided for locking the extendable portions 22 at different predetermined positions and in this embodiment this is provided by rows of inter-engaging dimples on the main stem portion and the extendable portions. Thus a row of dimples formed to constitute projections 27 is formed in each side wall 12 so that pairs of projections face each other across the channel. These projections 27 engage within complementary recesses 28 formed by inwardly projecting dimples in the side walls 25 of the extendable stem portions 21,22 as shown particularly in Figure 6. The dimples on both portions may be spaced e.g.
10 mm apart so that by extending each extendable portion 21, 22 by one increment, the effective length of the carrier may be extended by 20 mm to the next size of blade. Naturally, however, the spacing and positoning of the dimples will be suited to the prevailing range of blade sizes. The inner end of the extendable portion 22 may be tapered as shown to provide a convenient lead-in and the outward or tip end may have chamfered side walls leading to the claw 24 which should of appropriate height from the web 26 to grip the end of a blade.
The inter-engaging projections 27 and recesses 28 engage along the row by snap fitting, making use of the resilient qualities of the channel sections involved. The inter-engagment may be sufficiently firm to require the use of tools if desired since, normally, the correct adjustment of length will be performed as part of the manufacturing or packaging operation prior to retailing and not by the eventual customer. However as practices change, the tolerances may be such as to provide the facility of adjustment by hand by the eventual customer.
Turning to Figure 7 there is shown an embodiment in which the inter-locking dimples of the previous embodiment are replaced by a series of holes 30 in the web in the extendable portion which is marked 22' and which can be engaged by a pin 31 formed on an arm 32 which is connected to the end of the main stem portion 10' e.g. by a riveted connection which allows the arm to swivel. By lifting the end of therarm and pin the portion 22 can be withdrawn or replaced by a desired number of increments and the pin allowed to engage in a new hole.
Turning to Figure 8 there is shown an alternative embodiment in which the stem is formed with a plurality of longitudinally spaced socket means in the form of claws 24' separated by lines of weakness 40 which allow unwanted end portions of the stem to be broken off. Thus in the embodiment illustrated, the end portion 41 may be broken off at the first line of weakness 40 to shorten the effective length of the carrier by one increment.
Claims (15)
1. A windscreen wiper blade carrier which is adjustable at both ends so as to permit the attachment to the carrier of refill wiper blades of a plurality of different lengths.
2. A carrier according to claim 1 comprising socket means at each tip contructed so as to permit the attachment to the carrier of refill wiper blades of a plurality of different lengths.
3. A carrier according to claim 1 or claim 2 comprising a rigid bowed stem with means for enging a wiper arm and having a chord length corresponding generally with the length of a wiper blade, socket means at each tip for receiving a respective end of a wiper blade, support means extending from the stem towards the chord for engaging a wiper blade at at least two points intermdiate of the tips, the support means comprising respective retainers for engaging with a blade at the said points to resist lateral bowing of a fitted blade and to provide resilient force to press such bisde against a windscreen, wherein the socket means are constructed to allow the fitting of blades of a plurality of different lengths.
4. A carrier according to claim 3 wherein the support means comprise resilient arms.
5. A carrier according to claim 3 or claim 4 wherein the stem is of channel shape, open to the chord and having a central aperture fitted with a pin for receiving a wiper arm tip and the support means comprises a member having a pair of spring arms joined by generally parallel webs formed to seat within the aperture.
6. A carrier according to claim 5 wherein the webs each have a recess formed to snap-engage with the pin to hold the support member in position.
7. A carrier according to any preceding claim, wherein end portions of the carrier are separate from a main stem portion and are telescopically received by the main stem portion, each end of the main stem portion and its corresponding end portion comprising cooperating means for locking the end portion in one of a plurality of predetermined positions to adjust the effective length of the stem.
8. A carrier according to claim 7 wherein each end portion is of channel shape and is received within the channel of the main stem portion, the latter comprising at least one flange at each end to partly enclose the corresponding end portion.
9. A carrier according to claim 8 wherein the locking means comprises a row of equally longitudinally spaced cooperating projections and recesses by which each end portion can snap-engage with the main stem portion in different positions.
10. A carrier according to claim 9 wherein the projections project inwards from both channel side walls of the main stem portion to engage with recesses on the side walls of the end portion.
11. A carrier according to claim 9 or 10 wherein the projections and sockets are formed as dimples.
12. A carrier according to claim 7 or claim 8 wherein the locking means comprises a movable pin connected to each end of the main portion and receivable in one of a row of holes in each stem end portion.
13. A carrier according to any of claims 1 to 7 wherein each tip of the stem is formed with a plurality of longitudinally spaced socket means separated by lines of weakness to allow unwanted end portions of the stem to be broken off.
14. A carrier according to claim 1 substantially as described herein with reference to Figures 1 to 6 of the accompanying drawings.
15. A carrier according to claim 1 substantially as described herein with reference Figures 1 to 6 as modified by Figure 7 or Figure 8 of the accompanying drawings.
Priority Applications (11)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8101500A GB2083742A (en) | 1980-09-12 | 1981-01-19 | Carrier for a windscreen wiper |
IE1921/81A IE51509B1 (en) | 1980-09-12 | 1981-08-21 | Carrier for a windscreen wiper |
NZ198158A NZ198158A (en) | 1980-09-12 | 1981-08-25 | Extensible windscreen wiper blade carrier |
BR8108791A BR8108791A (en) | 1980-09-12 | 1981-09-07 | SUPPORT FOR CLEAN-WINDOW BLADE |
AU76451/81A AU7645181A (en) | 1980-09-12 | 1981-09-07 | Carrier for windscreen wiper blade |
US06/380,740 US4547925A (en) | 1980-09-12 | 1981-09-07 | Carrier for a windscreen wiper blade |
EP81902473A EP0059728A1 (en) | 1980-09-12 | 1981-09-07 | Carrier for windscreen wiper blade |
JP56502943A JPS57501778A (en) | 1980-09-12 | 1981-09-07 | |
PCT/GB1981/000181 WO1982000982A1 (en) | 1980-09-12 | 1981-09-07 | Carrier for windscreen wiper blade |
IT23886/81A IT1138219B (en) | 1980-09-12 | 1981-09-10 | WINDSHIELD WIPER SUPPORT |
ES1981269076U ES269076Y (en) | 1980-09-12 | 1981-09-11 | A CARRIER ELEMENT FOR WINDSHIELD WIPER. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8029643 | 1980-09-12 | ||
GB8101500A GB2083742A (en) | 1980-09-12 | 1981-01-19 | Carrier for a windscreen wiper |
Publications (1)
Publication Number | Publication Date |
---|---|
GB2083742A true GB2083742A (en) | 1982-03-31 |
Family
ID=26276878
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8101500A Withdrawn GB2083742A (en) | 1980-09-12 | 1981-01-19 | Carrier for a windscreen wiper |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2083742A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2120927A (en) * | 1982-05-21 | 1983-12-14 | Malcolm Henry Blackborow | Carrier for windscreen wiper blade |
US6425704B2 (en) | 2000-01-07 | 2002-07-30 | Closure Medical Corporation | Adhesive applicators with improved applicator tips |
-
1981
- 1981-01-19 GB GB8101500A patent/GB2083742A/en not_active Withdrawn
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2120927A (en) * | 1982-05-21 | 1983-12-14 | Malcolm Henry Blackborow | Carrier for windscreen wiper blade |
US6425704B2 (en) | 2000-01-07 | 2002-07-30 | Closure Medical Corporation | Adhesive applicators with improved applicator tips |
US6705790B2 (en) | 2000-01-07 | 2004-03-16 | Closure Medical Corporation | Adhesive applicators with improved applicator tips |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |