U.S. patent application number 09/734584 was filed with the patent office on 2002-01-10 for articulation system between windscreen wiper components.
Invention is credited to Nacamuli, Marc.
Application Number | 20020002755 09/734584 |
Document ID | / |
Family ID | 3944707 |
Filed Date | 2002-01-10 |
United States Patent
Application |
20020002755 |
Kind Code |
A1 |
Nacamuli, Marc |
January 10, 2002 |
Articulation system between windscreen wiper components
Abstract
The present invention is related to an ARTICULATION SYSTEM
BETWEEN WINDSCREEN WIPER COMPONENTS, which purpose is to provide
the perfect adjustment between the windscreen wiper and the vehicle
windscreen. The system comprises the union of two arcs, being one
big arc (1) and one small arc (4), isolated by a plastic joint (2)
and united by a plastic axis (3) and coupling and articulation
means between said big arc (1) and small arc (4).
Inventors: |
Nacamuli, Marc; (Sao Paulo,
BR) |
Correspondence
Address: |
LARSON & TAYLOR, PLC
1199 NORTH FAIRFAX STREET
SUITE 900
ALEXANDRIA
VA
22314
US
|
Family ID: |
3944707 |
Appl. No.: |
09/734584 |
Filed: |
December 13, 2000 |
Current U.S.
Class: |
15/250.46 ;
15/250.44 |
Current CPC
Class: |
B60S 2001/3815 20130101;
Y10T 403/32885 20150115; Y10T 403/18 20150115; Y10T 403/32951
20150115; B60S 1/3801 20130101 |
Class at
Publication: |
15/250.46 ;
15/250.44 |
International
Class: |
B60S 001/38 |
Foreign Application Data
Date |
Code |
Application Number |
Jul 6, 2000 |
BR |
PI 0003099-6 |
Claims
1. "ARTICULATION SYSTEM BETWEEN WINDSCREEN WIPER COMPONENTS",
wherein it comprises the union of two arcs, one big arc (1) and one
small arc (4), isolated by a plastic joint (2) and united by a
plastic axis (3), and coupling and articulation means between said
big arc (1) small arc (4).
2. "ARTICULATION SYSTEM", according to claim 1, wherein the plastic
joint (2) is housed on the lower portion of the big arc (1) and the
articulation pin (3) and the small arc (4) are housed inside the
joint (2).
3. "ARTICULATION SYSTEM", according to claim 2, wherein the
coupling of the plastic joint (2) on the lower portion of the big
arc (1) is achieved through the bulges (7) on the joint (2),
coupled to the lateral thru bores of the big arc (1).
4. "ARTICULATION SYSTEM", according to claim 3, wherein said joint
(2) features lateral thru bores (6), with their centers aligned
with the bulges (7), inside which is housed an articulation pin
(3), with ends (8) presenting a diameter corresponding to the
diameter of the thru bores (6), said pin (3) presenting a diameter
bigger than that of the ends (8), in its central portion (9).
5. "ARTICULATION SYSTEM", according to claim 1, wherein the small
arc (4) is coupled to the central portion (9) of the articulation
pin (3) by means of lateral thru bores on said small arc (4), with
their centers aligned with that of the thru bores of the big arc
(1).
6. "ARTICULATION SYSTEM", according to claim 1, wherein the small
arc (4) rotates freely in relation to the big arc (1), presenting a
slack (10) between the side wall of said small arc (4) and the
inner wall of the joint (2).
7. "ARTICULATION SYSTEM", according to claim 1, wherein the
articulation between the big arc (1) and the small arc (4) may take
place in several points along the windscreen wiper (5), based on
its curvature.
8. "ARTICULATION SYSTEM", according to claim 2, wherein the joint
(2) is made of plastic material.
9. "ARTICULATION SYSTEM", according to claim 4, wherein the
articulation pin (3) is made of plastic material.
Description
[0001] The present invention is related to an ARTICULATION SYSTEM
BETWEEN WINDSCREEN WIPER COMPONENTS, which purpose is to provide
the perfect adjustment between the windscreen wiper and the vehicle
windscreen.
[0002] The current state of the art presents several devices
applied to windscreen wipers. However, there is a great
inconvenience on the use of such devices regarding the adjustment
of the wiping blade to the surface of the vehicle windscreen.
[0003] One of the problems associated with the movement of the
blades over the vehicles windscreen refers to the curved shape of
said windscreens, which must be followed by the windscreen wiper
blade along all the mechanism path, in order to provide an
optimized performance of the entire system.
[0004] For mechanisms with a single articulation, there is not a
perfect adjustment of the wiper over the most curved portions of
the windscreen, due to the structural stiffness of the arms that
comprise the wiping mechanisms with a single articulated arm,
resulting in loss of windscreen wiping efficiency in this
portion.
[0005] There are also bi-articulated arms known on the art, for use
in windscreen wiping mechanisms. However, the problem encountered
in the use of such mechanisms regards the articulation precision
between the arcs that comprise the system, which require,
simultaneously, a perfect adjustment between said arcs, eliminating
undesired slacks, but allowing the angular movement of one arc in
relation to the other.
[0006] In order to solve such problems, it is an object of the
present invention to provide an articulation system. The invention
comprises a system used to articulate the arcs that comprise the
structure of a windscreen wiper.
[0007] The present invention will be better explained with the aid
of the annexed Figures, of which:
[0008] FIG. 1 is a cross sectional view of the articulation system
of the present invention, showing the disposition of the system
components;
[0009] FIG. 2 is a side view, in partial cross section, of the
windscreen wiper system components, showing the articulation system
between the big and small arcs, in two different operational
stages;
[0010] FIG. 3 is a side view of the articulation pin of the present
invention;
[0011] FIG. 4 is a side view of a joint of the present invention,
that actuates as an interface between the big and small arcs;
[0012] FIG. 5 is a top view of the joint of the present
invention.
[0013] The annexed Figures show that the system is made by the
union of two arcs, being one a big arc (1) and one a small arc (4),
isolated by a plastic joint (2) and united by a plastic axis (3),
as indicated on FIG. 1. FIG. 2, which depicts the system operating,
shows the free rotation of the small arcs (4) and, consequently, a
better adjustment of the wiping blade to the vehicle windscreen
glass surface, optimizing the system performance. Furthermore, said
system can be localized in different points of the wiper (5),
according to the length of the wiper (5) and its geometrical
configuration.
[0014] As can be observed on FIG. 1, the big arc (1) features holes
which function is to house the joint (2) that in turn constitutes
an interface element which function is to avoid the lateral contact
between the big arc (1) and the small arc (4) and eliminate slacks
in the system, ensuring the proper functioning of the windscreen
wiper. The plastic joint (2) is housed in the lower portion of the
big arc (1) and the articulation pin (3) and the small arc (4) are
housed inside the joint (2). The joint (2) also features lateral
holes (6) (FIG. 4), in which the articulation pin (3) is fitted, as
seen on FIG. 3. Finally, the joint (2) presents bulges (7) around
the holes (6) which act as coupling and positioning element between
the joint (2) and the big arc (1). This way, the joint (2) features
lateral thru bores (6), with their centers aligned with the bulges
(7), inside which is housed the articulation pin (3), of which the
ends (8) diameter corresponds to the diameter of the thru bores
(6).
[0015] The FIG. 1 shows also that the articulation pin (3) and the
small arc (4) are housed inside the joint (2). The diameter of the
articulation pin (3), in its central portion (9), is bigger than
the diameter at the ends (8), as seen on FIG. 3. That allows the
axial locking of the system after assembly (eliminating slacks and
the risk of undesired disassembly during operation), and serves to
support and allow the free rotation of the small arc (4).
[0016] The small arc (4) is coupled to the central portion (9) of
the articulation pin (3) by means of lateral thru bores on said
small arc (4), with their centers aligned with the centers of the
thru bores of the big arc (1).
[0017] FIG. 1 also shows the interference between the small arc (4)
and the central portion of the pin (3), impeding the radial
movement of the system. Between the joint (2) and the ends of the
pin (3) there is an adjustment which allows free rotation of the
small arc (4) in relation to the big arc (1), with a slack (10)
between the lateral wall of said small arc (4) and the inner wall
of the joint (2), being said slack big enough to account for the
system articulation.
[0018] The articulation between the big arc (1) and the small arc
(4) may take place in several points along the windscreen wiper
(5), based on its curvature, so that it reaches the desired
curvature in a given section of the windscreen optimizing the
performance and the efficiency of the wiping system.
[0019] Thus the ARTICULATION SYSTEM BETWEEN WINDSCREEN WIPER
COMPONENTS offers a perfect adjustment of the curvature of said
wiper (5), regardless of the position of the mechanism over the
windscreen, resulting in maximum efficiency of the process wiping
the vehicle windscreen.
* * * * *