Note: Descriptions are shown in the official language in which they were submitted.
CA 02426558 2003-04-23
WATER INLET CONTROL MEC~AIYISM
BACKGROUND OF TIIE INVENTION
The present invention is related to a water inlet control mechanism for
cleaning brushes, comprising a brush embodiment, a telescopic tube, a valve
assembly, and a rotary connector wherein said brush embodiment is attached to
one end of said telescopic tube thereof. ,The valve assembly sleeve joined to
an
outer tube of said telescopic tube is mainly made up of a valve body, a valve
sleeve and a switch sleeve. The valve sleeve adapted to a transverse retaining
hole of the valve body has a seating ring abutting against a projecting flange
of
the valve body, and two arc ends located at an eccentric arc facet of the
switch
sleeve via a guide slope. Via the mechanism thereof, the switch sleeve thereof
can easily regulate the discharge of water as well as accurately control the
amount of water discharged.
Please refer to Fig. 1. A conventional water inlet control mechanism for a
sprinkler 4 is mainly made up of a sprinkler body 41, a valve body 42, a
sealing
washer 43, a pivot body 44, a water filter 45, a sealing rubber 46, and a
rotary
head 47. The sprinkler body 41 has a transverse through hole 411 disposed at
the upper section thereof, a vertical through hole 412 disposed at the middle
section thereof in communication with the transverse through hole 411, a
retaining hole 413 extending at the front of said transverse through hole 411,
and
a locating block 414 disposed at the upper section thereof. The valve hody 42
is
provided with a pair of arc ends 421 disposed at both sides thereof, a sealing
ring
422 adapted at each of the arc ends 421 thereof, and a tapered facet 423
disposed
at the middle section thereof. The sealing washer 43 has a centrat through
hole
431 with an arc facet 432 disposed at the inner side of said central through
hole
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431 thereof. T he pivot body 44 has a top rod 441, an arc slope 432 extending
at
the bottom of the rod 441, and a coupling hole 443 disposed at the lower
section
thereof. The water filter 45 is provided with a plurality of locating plates
451
extending at the top thereof and seat body 452 with a filter hole 453 disposed
at
the bottom thereof. The rotary head 47 has an eccentric arc facet 471 disposed
at
the inner side thereof, and locating teeth 472 defining the eccentric arc
facet in
an arc of 90°.
There are some drawbacks to such conventional water inlet control
mechanism for a sprinkler. First, the rotary head 47 is easily blocked at the
sprinkler body 41 therein when the arc ends 421 of the rotary head 47 are
adapted to abut against the eccentric arc facet 471 thereof, causing great
difficulty in assembly. Second, the pivot body 44, whose top rod 441 is pushed
upwards via water pressure to engage with the sealing washer 43 for indirectly
sealing the water discharge, cnay float up and down at the vertical through
hole
412 of the sprinkler body 41 therein because of the low water pressure,
failing to
seal the discharge of water effectively. Third, it's hard far the rotary head
47 to
regulate the discharge of watef~ when the top rod 441 pushed upwards via water
pressure is constantly counteracted by the tapered facet 423 of the valve body
42
pressing downwards the top rod 44 for water discharge. Accordingly, it's not
easy to engage the locating teeth 472 of the rotary head 47 properly with the
locating block 414 of the sprinkler body 41 when the rotary head 47 is rotated
back and forth for the proper amount of water discharge. Fourth, the tapered
facet 423 of said valve body 42 and the top rod 441 of the pivot body 44 are
easily
worn out of use due to the counter force generated thereof. Fifth, the water
discharge is easily interrupted or even blocked by sediment when the sealing
washer 43, the pivot body 44, as well as the water flter 45 are ail adapted at
the
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sprinkler body 41 therein.
SUMMARY Oia THE PRESENT INVENTION
It is, therefore, the primary purpose of the present invention to provide a
water inlet control mechanism for cleaning brushes, mainly made up of a valve
assembly wherein a valve sleeve adapted ~to a transverse retaining hole of a
valve
body has a sealing ring abutting against a projecting flange of the valve body
to
seal up the discharge of water; and two arc ends located at an eccentric arc
facet
of a switch sleeve for regulating the water discharge as well as the amount of
water discharged. Besides, both arc ends of the valve sleeve are smoothly
located onto the eccentric arc facet thereof via a guide slope of the switch
sleeve,
refraining the valve sleeve from blocking at the switch sleeve therein. The
valve
assembly is simplified in assembly parts, greatly reducing the cost of
production
as well as the time of assembly thereof.
It is, therefore, the secondary purpose of the present invention to prnvide a
water inlet control mechanism for cleaning brushes wherein the switch sleeve
is
rotated to dislocate the sealing ring of the valve sleeve frnm the projecting
flange
of the valve body via the eccentric arc facet pushing both arc ends thereof,
directly regulating the discharge of water without any countp_r force p
_roduced
therewith. Besides, the switch sleeve can accurately control the amount of
water discharged, greatly saving the strength thereof.
It is, therefore, the third purpose of the present invention to provide a
water inlet control mechanism for cleaning hruchec wherein via the mnvP~nent
of
the eccentric arc facet thereof, the switch sleeve, locating or dislocating
the
sealing rings thereof onto or from the projecting flange thereof for the
sealing nr
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discharge of water, can directly and smoothly regulating the water discharge
without wearing out any parts thereof, greatly increasing the lifetime
thereof.
It is, therefore, the fourth purpose of the present invention to provide a
water inlet c.ontrnl mechanism for cleaning brushes wherein the water coming
through a lower water Met hole of the valve body will ga through the valve
sleeve adapted at the sleeve body therein and come out at an upper water
outlet
hole of the valve body to be discharged out of a brush embodiment via a
telescopic tube smoothly without any interruption thereof.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is a perspective exploded view of a conventional cleaning sprinkler.
Fig. 2 is a perspective exploded view of the present invention.
Fig. 3 is a sectional view of the present invention is assembly.
Fig. 4 is a diagram showing the sealing up of water discharge of the present
invention in a partially sectional view.
Fig. 5 is a diagram showing the discharge of water of the present invention in
a
partially sectional view.
Fig. 6 is another diagram showing the discharge of water of the present
invention
in another partially sectional view.
DETAii..ED DESCRIPTION OF THE PREFFRRFIl E~BOi)1MENTS
Please refer to Fig. 2. The present invention is related to water inlet
control mechanism for cleaning lfrushes, comprising a brush embodiment 5, a
telescopic tube 6, a valve assembly 7, and a rotary connector 8. The brush
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embodiment 5 has a threaded coupling hole 51 disposed at the center thereof,
and a through groove 52 disposed at one lateral side thereof for a scraper
strip 53
to be adapted thereto.
The telescopic tube 6, a hollow tube in shape, is mainly made up of a
threaded sleeve 61, a locking sleeve 62, a sleeve tube 63, an outer tube 64,
an
inner tube 65, and a seating sleeve 66. The threaded sleeve 61 has a threaded
upper end 61I of smaller diameter, and a sleeve coupling hole 612 disposed at
the
lower end thereof. The locking sleeve 62 has an inner threaded section 621
disposed at one end thereof with a tapered section disposed at the other end
thereof. The sleeve tube 63 has an inner ring groove 631 properly disposed at
the. middle section thereof, a stepwise outer threaded section 632 disposed at
one
end thereof and a plurality of _stopping teeth 633 extending nnwardc six ron
of the
stepwise outer threaded section 632 thereof. The outer tube 64 with the inner
tube 65 sleeve joined therein is equipped with H handle cover 641 disnoced sit
the
outer surface thereof, and a projecting ring 642 disposed at one end thereof.
The sealing sleeve 66 has a plurality of waterproof rings 661 disposed at the
periphery thereof, a stepwise coupling tube 662 disposed .at one end thereof,
and
an indented groove 663 disposed at the periphery of the stepwise coupling tube
662 thereof.
The valve assembly 7 is mainly made up of a valve body 71, a valve sleeve
72, and a switch sleeve 73. The valve body 71 is provided with a plurality of
watertight rings 711 disposed at both upper aad lower periphery thereof, a
circular groove 712 defined properly at the upper section thereof, a stop
flange
7I3 projecting at the middle section thereof, and a transverse retaining hole
714
properly disposed at the lower section thereof. A pair of asymmetric and
crescent-shaped upper and lower water outlet orifices 7141, 7142 are disposed
at
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the inner side of said transverse retaining hale 714 in communication with an
upper water outlet hole 715 and a lower water inlet hole 716 disposed at both
end
of said valve body 71 thereof respectively. The lower water outlet orif ce
7142 is
defined by a projecting flange 7143 adjacent to said lower water inlet hole
316
thereof. The valve sleeve 72 is provided with a pair of arc ends 721 disposed
at
both sides thereof, and an indented ring groove 722 disposed at one side
thereof
with a sealing ring 7221 adapted thereto. The switch sleeve 73 is equipped
with
an eccentric arc facet 731 properly disposed at the inner side thereof, a
guide
slope 732 extending at top of the eccentric arc facet 731 thereof, and a
plurality
of locating ribs 733 arranged properly at the inner side thereof.
The rotary connector 8 is equipped with an inner threaded hole Rl
disposed at the lower section thereof, and a sleeve hole 82 and a pivot hole
83
disposed sequentially in stepwise sat top of the inner threadQd hole Rl
thereof for
a retaining sleeve 84 to be led there-through. The retaining sleeve 84 has a
sleeve seat 841 with a watertight ring 84i 1 adapted thereto disposed at one
end
thereof, and a pivot rod 842 projecting at the other end thereof. A sealing
washer 85 is adapted to be abutted against said sleeve seat 841 thereof.
Please refer to Fig. 3. In assembly, the scraper strip 53 is first adapted to
the through groove 52 of said brush embodiment 5. The upper end of the outer
tube 64 is led upwards and sleeve joined to the inner side of said sleeve tube
63
with the projecting ring 642 thereof fixedly engaged with the inner ring
groove
631 thereof. The stepwise coupling tube 662 of the sealiag sleeve 66 is sleeve
joined to one end of the inner tube 65 and located therein via the indented
groove
663 engaging with a plurality of punched retaining dots 651 disposed at the
lower
periphery of the inner tube 65 thereof. The inner tube 65 is then led through
one
end of the outer tube 64 to come out at the other end thereof. The locking
sleeve
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62 is sleeve joined to the upper end of the inner tube 65 with the inner
threaded
section 621 thereof screw joined to the outer threaded section 632 of the
sleeve
tube 63, pressing the stopping teeth 633 to clamp tightly against the inner
tube 65
for secure location thereof. The upper end of the inner tube 65 is then
fixedly
engaged with the coupling hole 61Z of the threaded sleeve 61 to complete the
assembly of the telescopic tube 6 thereof.
The valve body 71 is led through the lower end of the outer tube 64 and
securely sleeve joined therein via the circular groove 712 thereof engaged
with a
plurality of punched iocating~ dots 643 disposed at the lower periphery of the
outer tube 64 thereof. The valve sleeve 72 is then led through one side of the
transverse retaining hole 714 of the valve body 71 till one the arc end 721
coming
out of the other side of the transverse retaining hole 714 and the sealing
ring
7221 abutting against the projecting flange .7143 tn seal ~~p the lower water
outlet
orifice 7142 and thus stop the discharge of water thereof. The switch sleeve
73
is then led to the lower end of the valve body ?1 tilt the locating ribs 733
thereof
abutting against the stop flange 713 thereof and both arc ends 721 thereof
slid
through the guide slope 732 thereof to be abutted against the eccentric arc
facet
731 of the switch sleeve 73 thereof as shown in Fig. 4.
The pivot rod 842 of the retaining sleeve 84 is led through the pivot hole 83
of the rotary connector 8 with the sleeve seat 841 thereof engaged with the
sleeve
hole 82 thereof. The pivot rod 842 is then led to the water inlet hole 716 of
the
valve body 71 and securely fixed thereto via ultrasonic wave or fastening
agents
thereof. The threaded upper end 611 of the threaded sleeve 61 thereof is
finally
screw joined to the threaded coupling hole 51 of the brush embodiment 5 to
complete the assembly of the present invention as shown in Figs. 3, 4.
Please refer to Figs. 5, 6. Via the mechanism of said valve sleeve 72
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adapted at the transverse retaining hole 714 of the valve body 71, the switch
sleeve 73 can easily regulate the discharge of water When abutting tight
against the projecting flange 7143 of the valve body 71, the sealing ring 7221
of
the valve sleeve 72 thereof will seal up the lower water outlet orifice 7142
of the
valve body 71 and thus stop the discharge of water thereof. When the switch
sleeve 73 is rotated to one side, the eccentric arc facet 731 of the switch
sleeve 73
will push both arc ends 721 of the valve sleeve 72 to dislocate the sealing
ring
7221 thereof from the projecting flange 7143 thereof, revealing a gap
there-between in communication wivh the iuwer water- orifice 7142 thereof far
the
discharge of water thereof. The water coming through the lower water inlet
hole 716 will go through the valve sleeve 72, inlet via the lower water
orifice 7142
and outlet via the upper water orifice 7141, to come out at the upper water
outlet
hole 715 thereof and flow through the telescopic tube 6 to be discharged at
the
brush embodiment 5 for cleaning without any interruption thereof.
Besides regulating the discharge of water, the switch sleeve 73 can also
accurately control the amount of water discharge. When the gap between the
sealing ring 7221 and the projecting flange 7143 is wider, the amount of water
discharged will increase accordingly as shown in Fig. G. Via the mechanism
thereof, the switch sleeve 73 can directly and smoothly regulating the water
discharge without wearing out any parts thereof, or producing any counter
force
therewith, greatly increasing the lifetinTe thereof.
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