Note: Descriptions are shown in the official language in which they were submitted.
SEALED TYPE WINDSHIELD WIPER STRUCTURE
BACKGROUND
Technical Field
The technical field relates to a windshield wiper, and more particularly
relates to a waterproof
windshield wiper.
Description of Related Art
Automotive windshield wiper is assembled on an outer surface of a windshield.
The
windshield wiper is connected to a wiper driving arm, and the wiper driving
arm drives the
windshield wiper to swing on the windshield for scraping objects such as
rainwater or stain.
Moreover, a windshield wiper structure mainly includes a hooking seat, a metal
elastic sheet,
a wiper cover, and a wiper blade. The hooking seat is combined with the
elastic sheet and the wiper
blade, and then the wiper cover is installed on the top of the hooking seat
and connected to the
wiper driving arm. Therefore, the wiper blade is driven to move through the
wiper driving arm to
clean the motor vehicle window.
However, since the combination structure of the wiper cover and the metal
elastic sheet of the
windshield wiper structure is not airtight, rainwater may easily penetrate
into the wiper cover and
infiltrate the metal elastic sheet. As a result, the metal elastic sheet may
be corroded easily and the
service life is shortened. Particularly, when the windshield wiper is used in
an icy environment, the
metal elastic sheet may lose its original elastic force due to freezing.
Therefore, a further
improvement is required.
SUMMARY OF THE DISCLOSURE
This disclosure is to provide a sealed type windshield wiper structure to keep
the airtightness
of the internal structure of the windshield wiper to maintain the elastic
pressing force of the metal
elastic sheet and increase the service life of the windshield wiper.
In order to achieve the object mentioned above, this disclosure provides a
sealed type
Date Recue/Date Received 2022-05-04
windshield wiper structure including a hooking seat, a carrying seat, an
elastic piece, a waterproof
cover, and a rubber wiper. The carrying seat is combined on a bottom side of
the hooking seat. The
carrying seat includes a carrying board and a carrying frame connected with
the carrying board.
The carrying board includes a through slot, and the carrying frame includes an
accommodating slot.
The elastic piece is inserted in the through slot and extended to two sides of
the carrying seat. The
waterproof cover includes a shell, an inner space defined in the shell, and an
outer space defined
outside the shell. The carrying seat is inserted in the inner space. The
rubber wiper includes a
piercing strip and a scraping strip connected to the piercing strip. The
piercing strip is inserted in
the outer space, and the scraping strip is exposed from the waterproof cover.
This disclosure is to provide a sealed type windshield wiper structure, in
which the thickness
of the top wall is greater than the thickness of any one of the two side
walls. Therefore, the
waterproof cover may maintain the desired strength and flexibility of the
structure to have a well
appearance without wrinkling.
This disclosure is to provide a sealed type windshield wiper structure, in
which the end plugs
are assembled on two ends of the waterproof cover to seal the waterproof
cover, so that the elastic
piece inserted inside the waterproof cover may be isolated from the external
moisture.
In comparison with the related art, the sealed windshield wiper structure of
this disclosure is
provided with a waterproof cover. Additionally, the elastic piece passes
through the carrying seat
and is inserted in the inner space of the waterproof cover. Furthermore, the
end plugs are assembled
on two ends of the waterproof cover to seal the waterproof cover, so that the
elastic piece may be
isolated from the external moisture to achieve the purpose of waterproof and
maintain the desired
elastic force.
BRIEF DESCRIPTION OF DRAWINGS
The features of the disclosure believed to be novel are set forth with
particularity in the
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Date Recue/Date Received 2022-05-04
appended claims. The disclosure itself, however, may be best understood by
reference to the
following detailed description of the disclosure, which describes a number of
exemplary
embodiments of the disclosure, taken in conjunction with the accompanying
drawings, in which:
FIG. 1 is a perspective schematic view of the sealed type windshield wiper
structure in this
disclosure.
FIG. 2 is a perspective exploded view of the sealed type windshield wiper
structure in this
disclosure.
FIG. 3 is a schematic view of the combination of the carrying seat and the
waterproof cover
in this disclosure.
FIG. 4 is a cross sectional view of the combination of the waterproof cover
and the rubber
wiper in this disclosure.
FIG. 5 is a schematic view of the sealed type windshield wiper structure
combined with the
end plugs.
FIG. 6 is a schematic view of bonding the inner end plug in this disclosure.
FIG. 7 is a schematic view of the combination of the outer end plug and the
inner end plug in
this disclosure.
FIG. 8 is a cross sectional view of the sealed type windshield wiper structure
combined with
the end plugs in this disclosure.
FIG. 9 is a cross sectional view of the sealed type windshield wiper structure
in this disclosure.
DETAILED DESCRIPTION
The technical contents of this disclosure will become apparent with the
detailed description
of embodiments accompanied with the illustration of related drawings as
follows. It is intended
that the embodiments and drawings disclosed herein are to be considered
illustrative rather than
restrictive.
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Date Recue/Date Received 2022-05-04
Please refer to FIG. 1 and FIG. 2, which respectively depict a perspective
schematic view and
a perspective exploded view of the sealed type windshield wiper structure in
this disclosure. This
disclosure provides a sealed type windshield wiper structure 1 for combining
with a wiper driving
arm 2. The sealed type windshield wiper structure 1 includes a hooking seat
10, a carrying seat 20,
an elastic piece 30, a waterproof cover 40 and a rubber wiper 50. The carrying
seat 20 is disposed
on the bottom side of the hooking seat 10 and is combined with the elastic
piece 30 and the
waterproof cover 40. Additionally, one end of the rubber wiper 50 is inserted
in the waterproof
cover 40.
In one embodiment of this disclosure, the sealed type windshield wiper
structure 1 further
includes a holding seat 60. The holding seat 60 is combined on the hooking
seat 10. The holding
seat 60 covers the hooking seat 10 and supports one end of a wiper driving arm
2.
Specifically, the hooking seat 10 is used for combining with the wiper driving
arm 2.
Furthermore, the sealed type windshield wiper structure 1 further includes an
engaging seat 15.
The engaging seat 15 is combined on the bottom side of the hooking seat 10 and
includes a pair of
through holes 150.
The carrying seat 20 is combined on the bottom side of the hooking seat 10.
The carrying seat
includes a carrying board 21 and a carrying frame 22 connected with the
carrying board 21. Two
sides of the carrying board 21 are respectively inserted in the pair of
through holes 150 of the
engaging seat 15, and the carrying board 21 includes a through slot 210.
Moreover, the carrying
20 frame 22 includes an accommodating slot 220. In this embodiment, the
carrying frame 22 is
structured by a plurality of claw hooks 221 arranged corresponding to each
other.
Please refer to FIG. 3 and FIG. 4, which depict a schematic view of the
combination of the
carrying seat and the waterproof cover in this disclosure and a cross
sectional view of the
combination of the waterproof cover and the rubber wiper in this disclosure.
In this embodiment,
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the elastic piece 30 is inserted in the through slot 210 and extended to two
sides of the carrying seat
20. In some embodiments, the elastic piece 30 may be a metal elastic sheet.
The waterproof cover 40 includes a shell 41, an inner space 42 disposed in the
shell 41 and an
outer space 43 formed outside the shell 41. The carrying seat 20 is inserted
in the inner space 43.
Specifically, the inner space 42 and the outer space 43 are respectively in a
U-shaped configuration
from the cross-sectional view, and one side of the outer space 43 is an
opening 44.
In more detail, the shell 41 includes a top wall 411 attached to the hooking
seat 10, an inner
bottom wall 412 located opposite to the top wall 411 and attached to the
carrying board 21, and
two side walls 413 connected to the top wall 411 and the inner bottom wall
412. It is worth noting
that in this embodiment, the thickness of the top wall 411 is greater than the
thickness of any one
of the two side walls 413. Therefore, the waterproof cover 40 may maintain the
desired strength
and flexibility of the structure to have a well appearance without wrinkling.
In this embodiment,
the thickness of the top wall 411 is about 0.5 mm to 1 mm, and the thickness
of the side wall 413
is about 0.3 mm to 0.6 mm.
It should be noted that the waterproof cover 40 is made of thermoplastic
vulcanization (TPV).
The TPV is a kind of stable elastomer which is made by dynamically vulcanizing
ethylene
propylene diene monomer (EPDM) and polypropylene (PP) and has the
characteristics of non-toxic
for environmental protection, desired aging resistance, and minor change in
hardness with respect
to temperature. In addition, since TPV does not contain carcinogens such as
nitrite or heavy metals
and may be recycled, TPV reaches the sanitary level, passes the SGS
certification and is complied
with the EU ROHS standard. Furthermore, the operating temperature of TPV may
reach -30 C to
120 C. The change of Shore Hardness is not higher than 5A within the
temperature range of -20 C
to 40 C, and that is better than traditional materials such as PVC and EPDM
etc.
It should be noted that the waterproof cover 40 of this disclosure is
manufactured by extrusion
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Date Recue/Date Received 2022-05-04
molding. Additionally, the length and the shape of the waterproof cover 40 are
not limited. Thus,
the waterproof cover 40 has advantages of high yield, low cost for mass
production.
Furthermore, the rubber wiper 50 is combined in the waterproof cover 40. The
rubber wiper
50 includes a piercing strip 51, a scraping strip 52 connected to the piercing
strip 51, and a linking
section 53 connected between the piercing strip 51 and the scraping strip 52.
More specifically, the
piercing strip 51 is inserted in the outer space 43. The scraping strip 52 is
exposed from the
waterproof cover 40. The linking section 53 is erected in the opening 44.
Please further refer to FIG. 5 to FIG. 8, which depict a schematic view of the
sealed type
windshield wiper structure combined with the end plugs, a schematic view of
bonding the inner
end plug in this disclosure, a schematic view of the combination of the outer
end plug and the inner
end plug in this disclosure and a cross sectional view of the sealed type
windshield wiper structure
combined with the end plugs in this disclosure. The sealed type windshield
wiper structure 1 of this
disclosure further includes a pair of end plugs 70. The pair of end plugs 70
are assembled on two
ends of the shell 41 to seal the inner space 42.
Specifically, each of the end plugs 70 includes an inner end plug 71 and an
outer end plug 72.
The inner end plug 71 is bonded on the shell 41, and the outer end plug 72
sheathes the inner end
plug 71. Accordingly, the inner space 42 is formed into a closed space, so
that the elastic piece 30
inserted in the inner space 42 is isolated from the external moisture to
achieve the purpose of
waterproofing.
Moreover, the inner end plug 71 includes a glue section 701 inserted in the
shell 41, a bonding
section 702 protruded outside the shell 41 and a protrusion rib 703. The
surface of the bonding
section 702 is higher than that of the glue section 701, and the protrusion
rib 703 is located between
the bonding section 702 and the glue section 701, so as to prevent the glue
from spilling during the
operation of potting compound. Furthermore, the arrangement of the protrusion
rib 703 may be
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used for positioning the inner end plug 71.
As shown in FIG. 7, a convex portion 711 is disposed at the bottom of the
inner end plug 71,
and a concave portion 721 is correspondingly disposed at the bottom of the
outer end plug 72. In
this embodiment, the inner end plug 71 is provided with a plurality of
positioning grooves 712. The
outer end plug 72 is provided with a plurality of positioning ribs 722
corresponding to the
positioning grooves 712. When the outer end plug 72 sheathes the inner end
plug 71, the positioning
ribs 722 and the positioning grooves 712 are mutually positioned to increase
the accuracy of
assembly.
It should be noted that the inner end plug 71 is further provided with a hole
713. The hole 713
is provided for potting compound into the outer space 43 and the opening 44 of
the waterproof
cover 40, so as to seal the side of the waterproof cover 40.
Please further refer to FIG. 9, which depicts a cross sectional view of the
sealed type
windshield wiper structure. The sealed type windshield wiper structure 1 of
this disclosure further
includes a fastener 80. The fastener 80 passes through the hooking seat 10,
the engaging seat 15,
the top wall 411 of the waterproof cover 40, the elastic piece 30, the
carrying board 21 of the
carrying seat 20 and the inner bottom wall 412 of the waterproof cover 40 in
sequence to combine
the hooking seat 10, the engaging seat 15, the carrying seat 20, the elastic
piece 30 and the
waterproof cover 40.
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Date Recue/Date Received 2022-05-04
