US20180030975A1 - Inflating device - Google Patents
Inflating device Download PDFInfo
- Publication number
- US20180030975A1 US20180030975A1 US15/221,759 US201615221759A US2018030975A1 US 20180030975 A1 US20180030975 A1 US 20180030975A1 US 201615221759 A US201615221759 A US 201615221759A US 2018030975 A1 US2018030975 A1 US 2018030975A1
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- United States
- Prior art keywords
- outer cylinder
- circular hole
- notches
- inflating device
- slide unit
- 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.)
- Abandoned
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B41/00—Pumping installations or systems specially adapted for elastic fluids
- F04B41/06—Combinations of two or more pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B33/00—Pumps actuated by muscle power, e.g. for inflating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
- F04B27/005—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders with two cylinders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
Definitions
- the present invention relates generally to an inflating device, and more particularly to an inflating device including a small pump unit and a large pump unit for optionally inflating an inflatable article.
- an inflating device is widely used in our daily life for inflating an inflatable article, like a tire of a bicycle, a motorbike and a basket ball, thereby providing much convenience to the people. It is noted that when the article to be inflated is in an entirely flat condition, a large pump unit should be applied since the same can provide high injection pressure. When the inflatable article is nearly full, a small pump unit should be applied since no high injection pressure is needed and the high injection pressure can result in undesired puncture of the article being inflated. In other words, large and small pump units are needed to facilitate inflation of an article and are beneficial that an inflating device possesses these large and same pump units at the same time. However, the conventional inflating device provides only a constant injection pressure, either large or small injection pressure.
- a primary objective of the present invention is to provide an inflating device including a small pump unit, a large pump unit integrally formed with the small pump unit and a switching structure for optionally switching into the small pump unit or the large pump unit so as to facilitate and bring convenience to the user of the inflating device of the present invention.
- An inflating device in accordance with the present invention includes: a main body, an outer cylinder, an inner cylinder, a handle, an inflating tube and a switching structure.
- the main body has a bottom seat, an upper end and a top cover mounted on and shielding the upper end of the main body.
- the top cover defines a first circular hole and a first air inlet.
- the outer cylinder is disposed movably within the main body and defines a first air chamber between in the main body and the outer cylinder.
- the first air chamber is in spatial communication with the first air inlet in the top cover.
- the outer cylinder has a lower portion slidably contacting with an inner surface of the main body and an upper portion that extends through the first circular hole in the top cover and that defines a second circular hole, a recessed chamber above the second circular hole, a second air inlet and a pair of first notches at two diametric sides of the recessed chamber.
- the inner cylinder is disposed movably within the outer cylinder and defines a second air chamber between the inner and outer cylinders.
- the second air chamber is in spatial communication with the second air inlet of the outer cylinder.
- the inner cylinder has a lower portion slidably contacting with an inner surface of the outer body and is formed with a one-way valve, and an upper portion that extends through the second circular hole of the outer cylinder.
- the handle has an air outlet and a lower portion for coupling with the upper portion of the inner cylinder and is formed with an engagement groove.
- the inflating tube is connected securely with the air outlet of the handle.
- the switching structure is provided for switching between large and small pressures, or large pump unit and small pump unit.
- the switching structure includes a slide unit disposed slidably to leftwise and rightwise directions and upward and downward directions within the recessed chamber of the outer cylinder and defining a third circular hole and having two opposite pulling portions, and a press cover mounted on the upper portion of the outer cylinder so as to cover the slide unit and the recessed chamber.
- the press cover has a fourth circular hole in alignment with the third circular hole in the slide unit and a pair of second notches in alignment with the first notches and permitting extension of the pulling portions of the slide unit through the first notches of the recessed chamber and the second notches of the press cover.
- the slide unit includes a slide plate having two opposite ends, from which the pulling portions extend outwardly inclinedly with respect to the slide plate and two lateral sides interconnecting the opposite ends and are formed with two protrusions.
- the recessed chamber has a bottom surface defining a sliding passage to permit sliding action of the slide plate in the leftwise and rightwise directions.
- the sliding passage is confined by two parallel side surfaces formed with a pair of restricting notches such that the protrusions respectively extend into the restricting notches to alternately engage two opposite ends of a respective one of the restricting notches when the slide plate slides within the sliding passage in the leftwise and rightwise directions.
- the slide unit further includes a pair of finger-grips respectively and upwardly extending from distal ends of said pulling portions to facilitate manipulation of said pulling portions in the leftwise and rightwise directions.
- the recessed chamber further has two restricting posts mounted erectly on the bottom surface of the sliding passage.
- the slide plate is formed with a pair of slide limit slots to permit extension of the two restricting posts in order to restriction sliding action of the slide plate in the leftwise and rightwise directions.
- the top cover further defines an annular inner edge at a bottom side thereof.
- the slide plate has an extension portion below one of the pulling portions.
- One of the first notches is configured to permit extension of the extension portion of the slide plate prior to extending into the annular inner edge of the top cover.
- the second air inlet of the outer cylinder is formed through the bottom surface of the sliding passage, and is constituted by a plurality of elongated slots and a plurality of notches formed along the periphery defining the second circular hole of the outer cylinder.
- the first air inlet is constituted by a plurality of minor air inlets formed around a section of an outer periphery confining the top cover.
- the press cover has a bottom side surface formed with two pairs of connection posts for mounting on the upper portion of the outer cylinder and a pair of confining curved plates interconnecting the pairs of connection posts so as to restrict sliding action of the slide unit in the leftwise and rightwise directions and the upward and downward directions within the recessed chamber.
- the one-way valve at the lower portion of the inner cylinder is constituted by an air aperture formed through the lower portion of the inner cylinder and a floating shield floatingly covering the air aperture in a normal condition.
- the lower portion of said inner cylinder further has a lowermost surface with the air aperture being located at an elevation above and extending through the lowermost surface while the floating shield is disposed within the inner cylinder for floatingly covering the air aperture.
- the lower portions of the inner and outer cylinders are respectively formed with an annular recess, in which, a seal ring is disposed to sealingly contact the respective inner surface of the main body and the outer cylinder.
- the press cover has an external wall surface formed with a plurality of grip-portions to facilitate gripping of the press cover during mounting of the press cover on the upper portion of the outer cylinder.
- the lower portion of the handle extends slidably and axially through the fourth circular hole in the press cover and the third circular hole in the slide unit for securely coupled to the upper portion of the inner cylinder in such a manner that the engagement groove selectively engaging the periphery defining the third circular hole in the slide unit.
- FIG. 1 is a perspective view of an inflating device of the present invention
- FIG. 2 is an exploded and perspective view of the inflating device of the present invention
- FIG. 3 is a cross-sectional view of the inflating device of the present invention, where some portions are enlarged to clarify its structure condition such that the inflating device of the present invention serves as a small pump unit;
- FIG. 4 is a cross-sectional view of the inflating device of the present invention, where some portions are enlarged to clarify its structure condition such that the inflating device of the present invention serves as a large pump unit;
- FIG. 5 illustrates how a slide unit is mounted on an upper portion of an outer cylinder employed in the inflating device of the present invention
- FIG. 6 shows a perspective view of the upper portion of the outer cylinder employed in the inflating device of the present invention
- FIG. 7 illustrates a perspective view of the slide unit mounted on the upper portion of the outer cylinder employed in the inflating device of the present invention.
- FIG. 8 illustrates a perspective bottom view of a press cover employed in the inflating device of the present invention.
- an inflating device of the present invention includes a main body 10 , an outer cylinder 20 , an inner cylinder 30 , an operating handle 40 , an inflating tube 50 and a switching structure 60 .
- the main body 10 has a bottom seat 11 , an upper end and a top cover 12 mounted on and shielding the upper end of the main body 10 .
- the top cover 12 defines a first circular hole 121 and a first air inlet 122 .
- the top cover 12 further has a bottom side formed with an annular inner edge 123 , the purpose of which will be discussed later.
- the first air inlet 122 is constituted by a plurality of minor air inlets formed around a section of an outer periphery confining the top cover 12 and are located adjacent to the left first notch 211 of the recessed chamber 21 .
- the outer cylinder 20 is disposed movably within the main body 10 and defines a first air chamber 70 between in the main body 10 and the outer cylinder 20 .
- the first air chamber 70 is in spatial communication with the first air inlet 122 in the top cover 12 .
- the outer cylinder 20 has a lower portion 90 slidably contacting with an inner surface of the main body 10 and an upper portion that extends through the first circular hole 121 in the top cover 12 and that defines a second circular hole 23 , a recessed chamber 21 above the second circular hole 23 , a second air inlet 22 and a pair of first notches 211 , 212 at two diametric sides of the recessed chamber 21 .
- the recessed chamber 21 has a bottom surface defining a sliding passage 213 , which is confined by two parallel side surfaces formed with a pair of restricting notches 2131 , the purpose of which will be given in the following.
- the second air inlet 22 is formed through the bottom surface of the sliding passage 213 , and is constituted by a plurality of elongated slots 221 and a plurality of notches 222 formed along the periphery defining the second circular hole 23 of the outer cylinder 20 (see FIG. 6 ).
- the inner cylinder 30 is disposed movably within the outer cylinder 20 and defines a second air chamber 80 between the inner and outer cylinders 30 , 20 .
- the second air chamber 80 is in spatial communication with the second air inlet 22 of the outer cylinder 20 .
- the inner cylinder 30 has a lower portion 90 slidably contacting with an inner surface of the outer body 20 and is formed with a one-way valve 31 , and an upper portion that extends through the second circular hole 23 of the outer cylinder 20 .
- the one-way valve 31 is constituted by an air aperture 311 formed through the lower portion of the inner cylinder 30 and a floating shield 312 floatingly covering the air aperture 311 .
- the lower portions 90 of the inner and outer cylinders 30 , 20 are respectively formed with an annular recess 91 , in which, a seal ring 92 is disposed to sealingly contact the respective inner surface of the main body 10 and the outer cylinder 20 .
- the lower portion of the inner cylinder 30 further has a lowermost surface with the air aperture 311 being located at an elevation above and extending through the lowermost surface while the floating shield 312 is disposed within the inner cylinder 30 for floatingly covering the air aperture 311 .
- the handle 40 has an air outlet 41 and a lower portion for coupling with the upper portion of the inner cylinder 30 and is formed with an engagement groove 42 , the purpose of which will be given in the following.
- the inflating tube 50 is connected securely with the air outlet 41 of the handle 40 .
- the switching structure 60 is provided for switching between large and small pressures, or large pump unit and small pump unit.
- the switching structure 60 includes a slide unit 61 (see FIG. 7 ) disposed slidably to leftwise and rightwise directions and upward and downward directions within the recessed chamber 21 of the outer cylinder 20 and defines a third circular hole 615 and having two opposite pulling portions 612 , and a press cover 62 (see FIG. 8 ) mounted on the upper portion of the outer cylinder 30 so as to cover the recessed chamber 21 and the slide unit 61 to prevent upward movement of the slide unit 61 but permitting limited upward and downward movement of the slide unit 61 within the recessed chamber 213 .
- the slide unit 61 includes a slide plate 611 having two opposite ends, from which the pulling portions 612 extend outwardly inclinedly with respect to the slide plate 611 and two lateral sides interconnecting the opposite ends and are formed with two protrusions 613 .
- the recessed chamber 21 has a bottom surface defining a sliding passage 213 , in which, the slide plate 611 is disposed to slide in the leftwise and rightwise directions.
- the sliding passage 213 is confined by two parallel side surfaces formed with a pair of restricting notches 2131 such that the protrusions 613 of the slide plate 611 respectively extend into the restricting notches 2131 to alternately engage two opposite ends of a respective one of the restricting notches 2131 when the slide plate 611 slides within the sliding passage 213 in the leftwise and rightwise directions.
- the press cover 62 has a fourth circular hole 621 in alignment with the third circular hole 615 in the slide plate 611 and a pair of second notches 622 at the outer periphery of the press cover 62 in alignment with the first notches 211 , 212 of the recessed chamber 21 and permitting extension of the pulling portions 612 of the slide plate 611 through the first notches 211 , 212 of the recessed chamber 21 and the second notches 622 of the press cover 62 .
- the slide unit 61 further includes a pair of finger-grips 617 respectively and upwardly extend from distal ends of the pulling portions 612 to facilitate manipulation of the pulling portions 612 in the leftwise and rightwise directions by a user's finger.
- the recessed chamber 21 further has two restricting posts 2132 (see FIG. 6 ) mounted erectly on the bottom surface of the sliding passage 213 .
- the slide plate 611 is formed with a pair of slide limit slots 614 to permit extension of the two restricting posts 2132 in order to restriction sliding action of the slide plate 611 in the leftwise and rightwise directions.
- the slide plate 611 has an extension portion 616 below one of the pulling portions 612 .
- One of the first notches 212 (see FIG. 6 ) is configured to permit extension of the extension portion 616 of the slide plate 611 prior to extending into the annular inner edge 123 of the top cover 12 .
- the notch 212 has a width larger than the notch 211 to permit extension of the extension of the slide plate 611 when the latter sides in the leftwise direction for covering the first air inlet 122 of the top cover 12 , the purpose of which is further explained in the following paragraphs.
- the press cover 62 has a bottom side surface formed with two pairs of connection posts 623 for mounting on the upper portion of the outer cylinder 20 and a pair of confining curved plates 624 interconnecting the pairs of connection posts 623 so as to restrict sliding action of the slide plate 611 in the leftwise and rightwise directions and in the upward and downward directions within the recessed chamber 21 , which in turn, provides stable sliding action of the slide plate 611 in the leftwise and rightwise directions, and along upward and downward movement of the slide plate 611 in the recess chamber 21 .
- the press cover 62 has an external wall surface formed with a plurality of grip-portions 625 to facilitate gripping of the press cover 62 during mounting of the press cover 62 on the upper portion of the outer cylinder 20 or dismantling therefrom.
- the lower portion of the handle 40 extends slidably and axially through the fourth circular hole 621 in the press cover 62 and the third circular hole 615 in the slide plate 611 for securely coupled to the upper portion of the inner cylinder 30 in such a manner that the engagement groove 42 selectively engaging the periphery defining the third circular hole 615 in the slide plate 611 .
- the inflating device of the present invention provides a small injection pressure upon downward movement of the handle 40 together with the inner cylinder 30 with respect to the outer cylinder 20 and the main body 10 .
- the inflating device of the present invention serves as a small pump unit.
- the inflating device of the present invention provides a large injection pressure upon downward movement of the handle 40 together with the inner cylinder 30 with respect to the inner cylinder 20 and the main body 10 .
- the inflating device of the present invention serves as a large pump unit.
- the inflating device of the present invention can be switched between two different modes, the inflating ability thereof is enhanced.
- the user can optionally switch to a desired mode according to the circumstance requires.
Abstract
An inflating device includes: a main body; an outer cylinder disposed movably within the main body and defining a first air chamber therebetween; an inner cylinder disposed movably within the outer cylinder and defining a second air chamber therebetween; a switching structure including a slide unit disposed slidably to move in leftwise and rightwise directions and upward and downward directions within a recessed chamber of the outer cylinder; and a hand extends slidably and axially through the slide unit in such a manner for optionally engaging the periphery defining a circular hole in the slide unit such that sliding action of the slide unit in the recessed chamber in the leftwise and rightwise direction and axial movement of the handle and the inner cylinder with respect to the outer cylinder serves as large and small pump units.
Description
- The present invention relates generally to an inflating device, and more particularly to an inflating device including a small pump unit and a large pump unit for optionally inflating an inflatable article.
- As we all know, an inflating device is widely used in our daily life for inflating an inflatable article, like a tire of a bicycle, a motorbike and a basket ball, thereby providing much convenience to the people. It is noted that when the article to be inflated is in an entirely flat condition, a large pump unit should be applied since the same can provide high injection pressure. When the inflatable article is nearly full, a small pump unit should be applied since no high injection pressure is needed and the high injection pressure can result in undesired puncture of the article being inflated. In other words, large and small pump units are needed to facilitate inflation of an article and are beneficial that an inflating device possesses these large and same pump units at the same time. However, the conventional inflating device provides only a constant injection pressure, either large or small injection pressure.
- A primary objective of the present invention is to provide an inflating device including a small pump unit, a large pump unit integrally formed with the small pump unit and a switching structure for optionally switching into the small pump unit or the large pump unit so as to facilitate and bring convenience to the user of the inflating device of the present invention.
- An inflating device in accordance with the present invention includes: a main body, an outer cylinder, an inner cylinder, a handle, an inflating tube and a switching structure.
- The main body has a bottom seat, an upper end and a top cover mounted on and shielding the upper end of the main body. The top cover defines a first circular hole and a first air inlet.
- The outer cylinder is disposed movably within the main body and defines a first air chamber between in the main body and the outer cylinder. The first air chamber is in spatial communication with the first air inlet in the top cover. The outer cylinder has a lower portion slidably contacting with an inner surface of the main body and an upper portion that extends through the first circular hole in the top cover and that defines a second circular hole, a recessed chamber above the second circular hole, a second air inlet and a pair of first notches at two diametric sides of the recessed chamber.
- The inner cylinder is disposed movably within the outer cylinder and defines a second air chamber between the inner and outer cylinders. The second air chamber is in spatial communication with the second air inlet of the outer cylinder. The inner cylinder has a lower portion slidably contacting with an inner surface of the outer body and is formed with a one-way valve, and an upper portion that extends through the second circular hole of the outer cylinder.
- The handle has an air outlet and a lower portion for coupling with the upper portion of the inner cylinder and is formed with an engagement groove.
- The inflating tube is connected securely with the air outlet of the handle.
- The switching structure is provided for switching between large and small pressures, or large pump unit and small pump unit. The switching structure includes a slide unit disposed slidably to leftwise and rightwise directions and upward and downward directions within the recessed chamber of the outer cylinder and defining a third circular hole and having two opposite pulling portions, and a press cover mounted on the upper portion of the outer cylinder so as to cover the slide unit and the recessed chamber. The press cover has a fourth circular hole in alignment with the third circular hole in the slide unit and a pair of second notches in alignment with the first notches and permitting extension of the pulling portions of the slide unit through the first notches of the recessed chamber and the second notches of the press cover.
- Preferably, the slide unit includes a slide plate having two opposite ends, from which the pulling portions extend outwardly inclinedly with respect to the slide plate and two lateral sides interconnecting the opposite ends and are formed with two protrusions. The recessed chamber has a bottom surface defining a sliding passage to permit sliding action of the slide plate in the leftwise and rightwise directions. The sliding passage is confined by two parallel side surfaces formed with a pair of restricting notches such that the protrusions respectively extend into the restricting notches to alternately engage two opposite ends of a respective one of the restricting notches when the slide plate slides within the sliding passage in the leftwise and rightwise directions. The slide unit further includes a pair of finger-grips respectively and upwardly extending from distal ends of said pulling portions to facilitate manipulation of said pulling portions in the leftwise and rightwise directions.
- In one embodiment of the present invention, the recessed chamber further has two restricting posts mounted erectly on the bottom surface of the sliding passage. The slide plate is formed with a pair of slide limit slots to permit extension of the two restricting posts in order to restriction sliding action of the slide plate in the leftwise and rightwise directions.
- Preferably, the top cover further defines an annular inner edge at a bottom side thereof. The slide plate has an extension portion below one of the pulling portions. One of the first notches is configured to permit extension of the extension portion of the slide plate prior to extending into the annular inner edge of the top cover.
- Preferably, the second air inlet of the outer cylinder is formed through the bottom surface of the sliding passage, and is constituted by a plurality of elongated slots and a plurality of notches formed along the periphery defining the second circular hole of the outer cylinder.
- Preferably, the first air inlet is constituted by a plurality of minor air inlets formed around a section of an outer periphery confining the top cover.
- In one embodiment of the present invention, the press cover has a bottom side surface formed with two pairs of connection posts for mounting on the upper portion of the outer cylinder and a pair of confining curved plates interconnecting the pairs of connection posts so as to restrict sliding action of the slide unit in the leftwise and rightwise directions and the upward and downward directions within the recessed chamber.
- Preferably, the one-way valve at the lower portion of the inner cylinder is constituted by an air aperture formed through the lower portion of the inner cylinder and a floating shield floatingly covering the air aperture in a normal condition. The lower portion of said inner cylinder further has a lowermost surface with the air aperture being located at an elevation above and extending through the lowermost surface while the floating shield is disposed within the inner cylinder for floatingly covering the air aperture.
- Preferably, the lower portions of the inner and outer cylinders are respectively formed with an annular recess, in which, a seal ring is disposed to sealingly contact the respective inner surface of the main body and the outer cylinder.
- Preferably, the press cover has an external wall surface formed with a plurality of grip-portions to facilitate gripping of the press cover during mounting of the press cover on the upper portion of the outer cylinder.
- In one embodiment of the present invention, the lower portion of the handle extends slidably and axially through the fourth circular hole in the press cover and the third circular hole in the slide unit for securely coupled to the upper portion of the inner cylinder in such a manner that the engagement groove selectively engaging the periphery defining the third circular hole in the slide unit. Note that once the slide unit is moved to the leftwise direction in the slide passage, the first air inlet of the top cover is shielded, so that the inflating device of the present invention provides a small injection pressure upon operation of the handle. In the same manner, once the slide unit is moved to the rightwise direction in the slide passage, the first air inlet of the top cover is exposed to the atmosphere; the inflating device of the present invention provides a large injection pressure upon operation of the handle.
- The present invention will be apparent to those skilled in the art by reading the following detailed description of a preferred embodiment thereof, with reference to the attached drawings, in which:
-
FIG. 1 is a perspective view of an inflating device of the present invention; -
FIG. 2 is an exploded and perspective view of the inflating device of the present invention; -
FIG. 3 is a cross-sectional view of the inflating device of the present invention, where some portions are enlarged to clarify its structure condition such that the inflating device of the present invention serves as a small pump unit; -
FIG. 4 is a cross-sectional view of the inflating device of the present invention, where some portions are enlarged to clarify its structure condition such that the inflating device of the present invention serves as a large pump unit; -
FIG. 5 illustrates how a slide unit is mounted on an upper portion of an outer cylinder employed in the inflating device of the present invention; -
FIG. 6 shows a perspective view of the upper portion of the outer cylinder employed in the inflating device of the present invention; -
FIG. 7 illustrates a perspective view of the slide unit mounted on the upper portion of the outer cylinder employed in the inflating device of the present invention; and -
FIG. 8 illustrates a perspective bottom view of a press cover employed in the inflating device of the present invention. - The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.
- Referring to
FIGS. 1 and 2 , whereinFIG. 1 is a perspective view of an inflating device of the present invention; andFIG. 2 is an exploded and perspective view of the inflating device of the present invention. As shown, an inflating device of the present invention includes amain body 10, anouter cylinder 20, aninner cylinder 30, anoperating handle 40, aninflating tube 50 and a switching structure 60. - The
main body 10 has abottom seat 11, an upper end and atop cover 12 mounted on and shielding the upper end of themain body 10. Thetop cover 12 defines a firstcircular hole 121 and afirst air inlet 122. Preferably, thetop cover 12 further has a bottom side formed with an annularinner edge 123, the purpose of which will be discussed later. In this embodiment, thefirst air inlet 122 is constituted by a plurality of minor air inlets formed around a section of an outer periphery confining thetop cover 12 and are located adjacent to the leftfirst notch 211 of therecessed chamber 21. - The
outer cylinder 20 is disposed movably within themain body 10 and defines afirst air chamber 70 between in themain body 10 and theouter cylinder 20. Thefirst air chamber 70 is in spatial communication with thefirst air inlet 122 in thetop cover 12. Theouter cylinder 20 has alower portion 90 slidably contacting with an inner surface of themain body 10 and an upper portion that extends through the firstcircular hole 121 in thetop cover 12 and that defines a secondcircular hole 23, a recessedchamber 21 above the secondcircular hole 23, asecond air inlet 22 and a pair offirst notches chamber 21. The recessedchamber 21 has a bottom surface defining a slidingpassage 213, which is confined by two parallel side surfaces formed with a pair of restrictingnotches 2131, the purpose of which will be given in the following. Note that in this embodiment, thesecond air inlet 22 is formed through the bottom surface of the slidingpassage 213, and is constituted by a plurality ofelongated slots 221 and a plurality ofnotches 222 formed along the periphery defining the secondcircular hole 23 of the outer cylinder 20 (seeFIG. 6 ). - The
inner cylinder 30 is disposed movably within theouter cylinder 20 and defines asecond air chamber 80 between the inner andouter cylinders second air chamber 80 is in spatial communication with thesecond air inlet 22 of theouter cylinder 20. Theinner cylinder 30 has alower portion 90 slidably contacting with an inner surface of theouter body 20 and is formed with a one-way valve 31, and an upper portion that extends through the secondcircular hole 23 of theouter cylinder 20. Preferably, the one-way valve 31 is constituted by anair aperture 311 formed through the lower portion of theinner cylinder 30 and a floatingshield 312 floatingly covering theair aperture 311. In this embodiment, thelower portions 90 of the inner andouter cylinders annular recess 91, in which, aseal ring 92 is disposed to sealingly contact the respective inner surface of themain body 10 and theouter cylinder 20. Note that the lower portion of theinner cylinder 30 further has a lowermost surface with theair aperture 311 being located at an elevation above and extending through the lowermost surface while the floatingshield 312 is disposed within theinner cylinder 30 for floatingly covering theair aperture 311. - The
handle 40 has anair outlet 41 and a lower portion for coupling with the upper portion of theinner cylinder 30 and is formed with anengagement groove 42, the purpose of which will be given in the following. - The inflating
tube 50 is connected securely with theair outlet 41 of thehandle 40. - The switching structure 60 is provided for switching between large and small pressures, or large pump unit and small pump unit. The switching structure 60 includes a slide unit 61 (see
FIG. 7 ) disposed slidably to leftwise and rightwise directions and upward and downward directions within the recessedchamber 21 of theouter cylinder 20 and defines a thirdcircular hole 615 and having two opposite pullingportions 612, and a press cover 62 (seeFIG. 8 ) mounted on the upper portion of theouter cylinder 30 so as to cover the recessedchamber 21 and theslide unit 61 to prevent upward movement of theslide unit 61 but permitting limited upward and downward movement of theslide unit 61 within the recessedchamber 213. Preferably, theslide unit 61 includes aslide plate 611 having two opposite ends, from which the pullingportions 612 extend outwardly inclinedly with respect to theslide plate 611 and two lateral sides interconnecting the opposite ends and are formed with twoprotrusions 613. To be more specific, the recessedchamber 21 has a bottom surface defining a slidingpassage 213, in which, theslide plate 611 is disposed to slide in the leftwise and rightwise directions. The slidingpassage 213 is confined by two parallel side surfaces formed with a pair of restrictingnotches 2131 such that theprotrusions 613 of theslide plate 611 respectively extend into the restrictingnotches 2131 to alternately engage two opposite ends of a respective one of the restrictingnotches 2131 when theslide plate 611 slides within the slidingpassage 213 in the leftwise and rightwise directions. Thepress cover 62 has a fourthcircular hole 621 in alignment with the thirdcircular hole 615 in theslide plate 611 and a pair ofsecond notches 622 at the outer periphery of thepress cover 62 in alignment with thefirst notches chamber 21 and permitting extension of the pullingportions 612 of theslide plate 611 through thefirst notches chamber 21 and thesecond notches 622 of thepress cover 62. Note that theslide unit 61 further includes a pair of finger-grips 617 respectively and upwardly extend from distal ends of the pullingportions 612 to facilitate manipulation of the pullingportions 612 in the leftwise and rightwise directions by a user's finger. - In this embodiment of the present invention, the recessed
chamber 21 further has two restricting posts 2132 (seeFIG. 6 ) mounted erectly on the bottom surface of the slidingpassage 213. Theslide plate 611 is formed with a pair ofslide limit slots 614 to permit extension of the two restrictingposts 2132 in order to restriction sliding action of theslide plate 611 in the leftwise and rightwise directions. - Preferably, the
slide plate 611 has anextension portion 616 below one of the pullingportions 612. One of the first notches 212 (seeFIG. 6 ) is configured to permit extension of theextension portion 616 of theslide plate 611 prior to extending into the annularinner edge 123 of thetop cover 12. In other words, thenotch 212 has a width larger than thenotch 211 to permit extension of the extension of theslide plate 611 when the latter sides in the leftwise direction for covering thefirst air inlet 122 of thetop cover 12, the purpose of which is further explained in the following paragraphs. - In this embodiment of the present invention, the
press cover 62 has a bottom side surface formed with two pairs ofconnection posts 623 for mounting on the upper portion of theouter cylinder 20 and a pair of confiningcurved plates 624 interconnecting the pairs ofconnection posts 623 so as to restrict sliding action of theslide plate 611 in the leftwise and rightwise directions and in the upward and downward directions within the recessedchamber 21, which in turn, provides stable sliding action of theslide plate 611 in the leftwise and rightwise directions, and along upward and downward movement of theslide plate 611 in therecess chamber 21. In addition, thepress cover 62 has an external wall surface formed with a plurality of grip-portions 625 to facilitate gripping of thepress cover 62 during mounting of thepress cover 62 on the upper portion of theouter cylinder 20 or dismantling therefrom. - In this embodiment of the present invention, the lower portion of the
handle 40 extends slidably and axially through the fourthcircular hole 621 in thepress cover 62 and the thirdcircular hole 615 in theslide plate 611 for securely coupled to the upper portion of theinner cylinder 30 in such a manner that theengagement groove 42 selectively engaging the periphery defining the thirdcircular hole 615 in theslide plate 611. - To further understand the saddle fastening device of the present invention, please see the following paragraphs.
- As best shown in
FIG. 3 , note that once theslide plate 611 is moved to the leftwise direction in theslide passage 213, the inner periphery confining the thirdcircular hole 615 in theslide plate 611 disengages from theengagement grove 42 of thehandle 40 while theextension portion 616 of theslide plate 611 covers thefirst air inlet 122 of thetop cover 12 and thesecond air inlet 22 of theouter cylinder 20 is exposed to the atmosphere (permitting air to enter the second air chamber 80) so that the inflating device of the present invention provides a small injection pressure upon downward movement of thehandle 40 together with theinner cylinder 30 with respect to theouter cylinder 20 and themain body 10. In other words, the inflating device of the present invention serves as a small pump unit. - Referring to
FIG. 4 , in the same manner, once theslide plate 611 is moved to the rightwise direction in theslide passage 213 so as to permit engagement of the inner periphery defining the thirdcircular hole 615 in theslide plate 611 with theengagement groove 42 of thehandle 40, permitting upward movement of thehandle 40 together with theslide plate 611 and exposing thefirst air inlet 122 of thetop cover 12 to the atmosphere (permitting air to enter the first air chamber 70), the inflating device of the present invention provides a large injection pressure upon downward movement of thehandle 40 together with theinner cylinder 30 with respect to theinner cylinder 20 and themain body 10. In other words, the inflating device of the present invention serves as a large pump unit. - An important aspect to note that since the inflating device of the present invention can be switched between two different modes, the inflating ability thereof is enhanced. The user can optionally switch to a desired mode according to the circumstance requires.
- Although the present invention has been described with reference to the preferred embodiments thereof, it is apparent to those skilled in the art that a variety of modifications and changes may be made without departing from the scope of the present invention which is intended to be defined by the appended claims.
Claims (10)
1. An inflating device comprising:
a main body having a bottom seat, an upper end and a top cover mounted and shielding said upper end of said main body, said top cover defining a first circular hole and a first air inlet;
an outer cylinder disposed movably within said main body and defining a first air chamber therebetween in spatial communication with said first air inlet in said top cover, said outer cylinder having a lower portion slidably contacting with an inner surface of said main body and an upper portion that extends through said first circular hole in said top cover and that defines a second circular hole, a recessed chamber above said second circular hole, a second air inlet and a pair of first notches at two diametric sides of said recessed chamber;
an inner cylinder disposed movably within said outer cylinder and defining a second air chamber therebetween in spatial communication with said second air inlet of said outer cylinder, said inner cylinder having a lower portion slidably contacting with an inner surface of said outer body and formed with a one-way valve, and an upper portion that extends through said second circular hole of said outer cylinder;
a handle having an air outlet and a lower portion for coupling with said upper portion of said inner cylinder and formed with an engagement groove;
an inflating tube connected securely with said air outlet of said handle; and
a switching structure for switching between large and small pressures, including a slide unit disposed slidably to leftwise and rightwise directions and defining a third circular hole and having two opposite pulling portions, and a press cover mounted on said upper portion of said outer cylinder so as to cover said recessed chamber and said slide unit and permitting limited upward and downward movement of the slide unit within said recessed chamber, said press cover having a fourth circular hole in alignment with said third circular hole in said slide unit and a pair of second notches in alignment with said first notches and permitting extension of said pulling portions of said slide unit through said first notches of said recessed chamber and said second notches of said press cover;
wherein, said lower portion of said handle extends slidably and axially through said fourth circular hole in said press cover and said third circular hole in said slide unit for securely coupled to said upper portion of said inner cylinder in such a manner that said engagement groove selectively engaging the periphery defining said third circular hole.
2. The inflating device according to claim 1 , wherein said slide unit includes a slide plate having two opposite ends from which said pulling portions extend outwardly inclinedly with respect to said slide plate and two lateral sides interconnecting said opposite ends and formed with protrusions, said recessed chamber having a bottom surface defining a sliding passage to permit sliding action of said slide plate in said leftwise and rightwise directions, said sliding passage being confined by two parallel side surfaces formed with a pair of restricting notches such that said protrusions respectively extend into said restricting notches to alternately engage two opposite ends of a respective one of said restricting notches when said slide plate slides within said sliding passage in said leftwise and rightwise directions, said slide unit further including a pair of finger-grips respectively and upwardly extending from distal ends of said pulling portions to facilitate manipulation of said pulling portions in said leftwise and rightwise directions.
3. The inflating device according to claim 2 , wherein said recessed chamber further has two restricting posts mounted erectly on said bottom surface of said sliding passage, said slide plate being formed with a pair of slide limit slots to permit extension of said two restricting posts in order to restriction sliding action of said slide plate in said leftwise and rightwise directions.
4. The inflating device according to claim 2 , wherein said top cover further defines an annular inner edge at a bottom side thereof, said slide plate having an extension portion below one of said pulling portions, one of said first notches being configured to permit extension of said extension portion prior to extending into said annular inner edge of said top cover.
5. The inflating device according to claim 2 , wherein said second air inlet of said outer cylinder is formed through said bottom surface of said sliding passage, and is constituted by a plurality of elongated slots and a plurality of notches formed along the periphery defining said second circular hole of said outer cylinder.
6. The inflating device according to claim 2 , wherein said first air inlet is constituted by a plurality of minor air inlets formed around a section of an outer periphery confining said top cover.
7. The inflating device according to claim 1 , wherein said press cover has a bottom side surface formed with two pairs of connection posts for mounting on said upper portion of said outer cylinder and a pair of confining curved plates interconnecting said pairs of connection posts so as to restrict sliding action of said slide unit in said leftwise and rightwise directions and said upward and downward directions within said recessed chamber.
8. The inflating device according to claim 1 , wherein said one-way valve is constituted by an air aperture formed through said lower portion of said inner cylinder and a floating shield floatingly covering said air aperture, said lower portion of said inner cylinder further having a lowermost surface with said air aperture being located at an elevation above and extending through said lowermost surface while said floating shield is disposed within said inner cylinder for floatingly covering said air aperture.
9. The inflating device according to claim 1 , wherein said lower portions of said inner and outer cylinders are respectively formed with an annular recess, in which, a seal ring is disposed to sealingly contact the respective inner surface of said main body and said outer cylinder.
10. The inflating device according to claim 1 , wherein said press cover has an external wall surface formed with a plurality of grip-portions to facilitate gripping of said press cover during mounting of said press cover on said upper portion of said outer cylinder.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/221,759 US20180030975A1 (en) | 2016-07-28 | 2016-07-28 | Inflating device |
US16/423,463 US10465670B2 (en) | 2016-07-28 | 2019-05-28 | Inflating device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/221,759 US20180030975A1 (en) | 2016-07-28 | 2016-07-28 | Inflating device |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/423,463 Continuation-In-Part US10465670B2 (en) | 2016-07-28 | 2019-05-28 | Inflating device |
Publications (1)
Publication Number | Publication Date |
---|---|
US20180030975A1 true US20180030975A1 (en) | 2018-02-01 |
Family
ID=61009408
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/221,759 Abandoned US20180030975A1 (en) | 2016-07-28 | 2016-07-28 | Inflating device |
Country Status (1)
Country | Link |
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US (1) | US20180030975A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3536953A1 (en) * | 2018-03-09 | 2019-09-11 | Dongguan Tiger Point, Metal & Plastic Products Co., Ltd. | Manual dual-directional inflating device |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4508490A (en) * | 1984-01-10 | 1985-04-02 | The United States Of America As Represented By The Secretary Of The Navy | Two stage manual air pump |
US6257849B1 (en) * | 2000-04-12 | 2001-07-10 | Scott Wu | Manual air pump having selectable high pressure and high pressure modes |
US6371741B1 (en) * | 2000-05-08 | 2002-04-16 | Scott Wu | Manual air pump having at least two selectable inflation modes |
-
2016
- 2016-07-28 US US15/221,759 patent/US20180030975A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4508490A (en) * | 1984-01-10 | 1985-04-02 | The United States Of America As Represented By The Secretary Of The Navy | Two stage manual air pump |
US6257849B1 (en) * | 2000-04-12 | 2001-07-10 | Scott Wu | Manual air pump having selectable high pressure and high pressure modes |
US6371741B1 (en) * | 2000-05-08 | 2002-04-16 | Scott Wu | Manual air pump having at least two selectable inflation modes |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3536953A1 (en) * | 2018-03-09 | 2019-09-11 | Dongguan Tiger Point, Metal & Plastic Products Co., Ltd. | Manual dual-directional inflating device |
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