U.S. patent application number 09/934478 was filed with the patent office on 2003-02-27 for a device with an motor driven impellar pump and an electronically and manually actuated air valve for controlling the filling and exhausting of an air cushion.
Invention is credited to Song, Rong-Jyh, Yen, Tsung-Ping.
Application Number | 20030037839 09/934478 |
Document ID | / |
Family ID | 25465628 |
Filed Date | 2003-02-27 |
United States Patent
Application |
20030037839 |
Kind Code |
A1 |
Song, Rong-Jyh ; et
al. |
February 27, 2003 |
A DEVICE WITH AN MOTOR DRIVEN IMPELLAR PUMP AND AN ELECTRONICALLY
AND MANUALLY ACTUATED AIR VALVE FOR CONTROLLING THE FILLING AND
EXHAUSTING OF AN AIR CUSHION
Abstract
A device for controlling air filling and air exhausting of an
air cushion includes a casing provided inside with a motor
controlled by a wire controller and a fan blade, and an upper cover
mounted on the casing. An air-exhausting nozzle closed by a film is
provided outside the casing. A support plate is positioned above
the fan blade, fixed on an upper surface with a transformer and an
electromagnetic valve controlled by the wire controller. A push
plate is combined on a front end of the magnetic rod of the
electro-magnetic valve, having a push rod protruding through the
casing and extending in the air-exhausting nozzle to push open the
film. Then this device can be controlled by wire controlling or
manual controlling to adjust resilience of an air cushion.
Inventors: |
Song, Rong-Jyh; (Taipei,
TW) ; Yen, Tsung-Ping; (Taipei Hsien, TW) |
Correspondence
Address: |
BACON & THOMAS, PLLC
625 SLATERS LANE
FOURTH FLOOR
ALEXANDRIA
VA
22314
|
Family ID: |
25465628 |
Appl. No.: |
09/934478 |
Filed: |
August 23, 2001 |
Current U.S.
Class: |
141/317 |
Current CPC
Class: |
F04D 25/084 20130101;
Y10T 137/7876 20150401; F04D 25/06 20130101 |
Class at
Publication: |
141/317 |
International
Class: |
B65B 003/04; B67C
003/00; B65B 001/04 |
Claims
I claim:
1. A device for controlling air filling and exhausting of an air
cushion comprising a casing, an upper cover, an air-exhausting
nozzle and a support plate: Said casing provided inside with a
motor controlled by a wire controller and a fan blade driven by
said motor, said casing bored in one wall with a through hole
connected with said air-exhausting nozzle in a front side, said
air-exhausting nozzle shaped as a hollow column and having a nut
threadably fitted around and a hollow frame-shaped triggering
member tucked inside, said triggering member having a spring fitted
around a center rod, with one end of said spring resting on an
annular projection formed around an inner wall of said
air-exhausting nozzle to push against said triggering member to be
always positioned within said air-exhausting nozzle, said
triggering member having a film provided at a front side for
closing up said air-exhausting nozzle, a support plate fixed above
the fan blade of said casing, a transformer and an electro-magnetic
valve fixed on an upper side of said support plate, said
electro-magnetic valve having a magnetic rod fixed with a push
plate on one end facing said air-exhausting nozzle, said push plate
provided at one end with a push rod protruding through said casing
and extending into said air-exhausting nozzle, said push plate
further fixed on a bottom with a pin protruding downward, said pin
pivotally fitted on one end of an interactive rod, said interactive
rod having a through hole in a center to receive a support stud on
said support plate and having one end protruding out of said casing
for handling conveniently.
2. The device for controlling air filling and air-exhausting of an
air cushion as claimed in claim 1, wherein said interactive rod has
one end protruding out of said casing and pivotally provided with a
sliding block.
Description
BACKGROUND OF THE INVENTION
[0001] This invention relates to a device for controlling air
filling and exhausting of an air cushion, particularly to one
possible to be used selectively either by wire controlling or
manual controlling, convenient in handling and easy to adjust the
air pressure inside an air cushion any time.
[0002] Conventionally, an air-filling machine is used for filling
air into an air cushion. The air-filling machine has an
air-exhausting nozzle formed integral and a simple motor as well as
a fan blade fitted inside, and the fan blade is driven by the motor
to rotate to fill up the air cushion with air, but it has only one
function of filling in air. In case a user lies on an air cushion
too hard and wants to release some air from it, the user has to
rise up to disassemble the air-filling machine from the air cushion
so as to let the air get out of the air cushion, thus inconvenient
in handling and difficult to control a proper resilience of an air
cushion.
SUMMARY OF THE INVENTION
[0003] The objective of this invention is to offer a device for
controlling air filling and exhausting of an air cushion,
convenient in handling and controlling and possible to adjust the
air pressure inside an air cushion any time.
[0004] The feature of this invention includes a casing provided
inside with a motor controlled by a wire controller and a fan blade
driven by the motor, and an upper cover fixed on the casing. The
casing is bored on a front wall surface with a through hole
connected with an air-exhausting nozzle in a front for the air
inside an air cushion to flow out. The air-exhausting nozzle is
shaped as a hollow column, having a nut threadably fitted around
its outer circumference and a triggering member shaped as a hollow
frame tucked inside. Then, a spring is fitted around a center rod
of the triggering member, with one end resting on the annular
projection formed around the inner wall of the air-exhausting
nozzle in order to push the triggering member to be always
positioned within the air-exhausting nozzle. The triggering member
further has a film fixed on a front side for closing up the
air-exhausting nozzle. In addition, a support plate is provided
above the fan blade, fixed on a top surface with a transformer and
an electro-magnetic valve controlled by the wire controller, and
the electro-magnetic valve has a magnetic rod provided with a push
plate fixed on one end facing the air-exhausting nozzle. Then, the
push plate has a push rod fixed on one end to protrude through the
casing and extend into the air-exhausting nozzle for pushing open
the film and further has a pin protruding downward to be pivotally
connected with one end of an interactive rod. The interactive rod
has a through hole in the center for receiving a support stud on
the support plate and has the other end protruding out of the
casing and fixed with a sliding block, thus finishing assembling
the device of this invention.
BRIEF DESCRIPTION OF DRAWINGS
[0005] This invention will be better understood by referring to the
accompanying drawings, wherein:
[0006] FIG. 1 is an exploded perspective view of a device for
controlling air filling and exhausting of an air cushion in the
present invention:
[0007] FIG. 2 is a cross-sectional view of the device for
controlling air filling and exhausting of an air cushion in the
present invention:
[0008] FIG. 3 is a cross-sectional view of the device in an
air-filling condition in the present invention:
[0009] FIG. 4 is a cross-sectional view of the device in a first
stage of an air-exhausting condition in the present invention:
[0010] FIG. 5 is a cross-sectional view of the device in a second
stage of an air-exhausting condition in the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
[0011] A preferred embodiment of a device for controlling air
filling and exhausting of an air cushion in the present invention,
as shown in FIG. 1, includes a casing 1, an upper cover 2, an
air-exhausting nozzle 3 and a support plate 4 as main components
combined together.
[0012] The casing 1 is provided inside with a motor 12 controlled
by a wire controller 11 and a fan blade 13 driven by the motor 12,
having a through hole 14 bored in a front wall to connect with an
air-exhausting nozzle 3 on an outer side for the air inside an air
cushion to flow out. The air-exhausting nozzle 3 is shaped as a
hollow column, having a nut 31 threadably fitted around its outer
circumference and an annular triggering member 32 tucked inside.
The triggering member 32 is shaped as a hollow frame, having a
spring 33 fitted around its center rod, with the front end of the
spring 33 resting on an annular projection 34 formed on the inner
wall of the air-exhausting nozzle 3 in order to force the
triggering member 32 to be always positioned within the
air-exhausting nozzle 3, as shown in FIG. 2. Then a film 35 is
fixed on the front side of the triggering member 32 for closing up
the air-exhausting nozzle 3.
[0013] The support plate 4 is fixed on the casing 1 and above the
fan blade 13 of the casing 1 and fixed on a top side with a
transformer 41 and an electro-magnetic valve 42 controlled by the
wire controller 11. The electro-magnetic valve 42 has a magnetic
rod 421 and a push plate 43 fixed on one end of the magnetic rod
421 facing the air-exhausting nozzle 3. Further, the push plate 43
has a push rod 44 fixed on one end to protrude through the wall of
the casing 1 and extend in the air-exhausting nozzle 3, and a pin
431 positioned at the bottom and protruding downward to be
pivotally fitted with one end of a <-shaped interactive rod 45.
The interactive rod 45 has a through hole 451 on center for
receiving a support stud 46 on the support plate 4 and has its
other end protruding out of the casing 1 and pivotally connected
with a sliding bloc 452. Additionally, the upper cover 2 is a
hollow bottom and mounted on the support plate 4.
[0014] In assembling, as shown in FIG. 2, firstly, place the spring
33 against the annular projection 34 to permit the triggering
member 32 pull inward the film 35 closing up the air-exhausting
nozzle 3. Next, fix the support plate 4 on the casing 1 above the
fan blade 13 and let the push rod 44 on an outer side of the
electro-magnetic valve 42 protrude through the casing 1 and extend
in the air-exhausting nozzle 3, and then the interactive rod 45 has
its one end with the sliding block 452 protrude out of the casing
1. Lastly, the upper cover 2 is mounted on the support plate 4.
Thus, the device for filling air in and exhausting air from an air
cushion is completed.
[0015] In using, the air-exhausting nozzle 3 is first tucked in the
air-intake nozzle 5 of an air cushion (not shown) and then the nut
is threadably fitted around the air-intake nozzle 5, letting the
device of this invention positioned on the outer side of the air
cushion, as shown in FIG. 3. Next, the motor 12 is started by the
wire controller 11 to activate the fan blade 13 to rotate, and
synchronously the wind produced blows to the air-exhausting nozzle
3 via the through hole 14 and automatically pushes open the
triggering member 32 and the film 35 to get in and inflate the air
cushion. When the air cushion is inflated to a proper resilience,
the motor 12 as well as the fan blade 13 is stopped, and in the
meanwhile the triggering member 32 and the film 35 recover to close
up the air-exhausting nozzle 3 because of no wind pushing them any
more, with the spring 33 recovering its position and a reverse
pushing force from inside the air cushion recovering closing the
nozzle 3, as shown in FIG. 2. Thus, the air inside the air cushion
is kept not leaking out at all.
[0016] In addition, in case the air cushion is too hard and needs
to exhaust a great quantity of air out, the wire controller 11 is
handled to activate the electro-magnetic valve 42 to operate to let
its magnetic rod 421 push the push plate 43 to move toward one side
of the air-exhausting nozzle 3, and at the same time the push rod
44 of the push plate 43 is actuated to move close to the film 35
and then push it open with its front end. Thus, the air in the air
cushion exhausts through the gap between the film 35 and the
air-exhausting nozzle 3 to soften the air cushion. Therefore,
according to liking, a user can decide when to stop exhausting the
air from the air cushion by controlling the wire controller 11 to
let the electric-magnetic valve 42 cut off electricity, and the
push plate 43, the push rod 44 and the film 35 all recover their
original positions, as shown in FIG. 2.
[0017] On the other hand, if only a little air needs to be
exhausted from the air cushion to obtain a comfortable condition,
manual controlling can be used, referring to FIG. 5, by manually
pushing the sliding block 452 positioned on the outer side of the
casing 1 to move and activate the interactive rod 45 to turn
eccentrically, with the support stud 46 serving as a fulcrum. Thus,
the interactive rod 45 will activate the push plate 43 and the push
rod 44 to move toward the film 35, and then the front end of the
push rod 44 will directly push open the film 35 to let the air
inside the air cushion flow out gradually through the gap between
the film 35 and the air-exhausting nozzle 3 so as to soften the air
cushion slowly. Additionally, exhausting of the air in an air
cushion can be carried on step by step by releasing the sliding
block 452 any time one likes to let the film 35 close up the
air-exhausting nozzle 3 again to recover the condition shown in
FIG. 2. In short, the air cushion can be adjusted to a
comparatively comfortable condition by using the wire controller 11
to start the motor 12 for filling in air or start the
electromagnetic valve 42 for exhausting air or move the sliding
block 452 by hand for exhausting air, apparently having good
mobility to satisfy a user's need.
[0018] Evidently, this invention has the following advantages as
can be understood from the above description.
[0019] 1. It can be used for both filling air in and exhausting air
from an air cushion, solving the problem of only filling in air and
not exhausting air of a conventional device.
[0020] 2. Both wire controlling and manual controlling are
available for filling air in or exhausting air from an air cushion
depending on one's need and preference, thus convenient in handling
and easy in controlling the resilience of an air cushion.
[0021] While the preferred embodiment of the invention has been
described above, it will be recognized and understood that various
modifications may be made therein and the appended claims are
intended to cover all such modifications that may fall within the
spirit and scope of the invention.
* * * * *