US20160010637A1 - Air Pump with Low Pressure Gauge Protective Device - Google Patents

Air Pump with Low Pressure Gauge Protective Device Download PDF

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Publication number
US20160010637A1
US20160010637A1 US14/708,357 US201514708357A US2016010637A1 US 20160010637 A1 US20160010637 A1 US 20160010637A1 US 201514708357 A US201514708357 A US 201514708357A US 2016010637 A1 US2016010637 A1 US 2016010637A1
Authority
US
United States
Prior art keywords
air pump
base
slot
sliding member
section
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
Application number
US14/708,357
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English (en)
Inventor
Louis Chuang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of US20160010637A1 publication Critical patent/US20160010637A1/en
Abandoned legal-status Critical Current

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Classifications

    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/08—Regulating by delivery pressure
    • 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
    • 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
    • F04B33/005—Pumps actuated by muscle power, e.g. for inflating specially adapted for inflating tyres of non-motorised vehicles, e.g. cycles, tricycles
    • 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
    • F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
    • 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
    • F04B39/0022—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 piston rods
    • 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
    • F04B39/121—Casings

Definitions

  • the present invention relates to an air pump and, in particular, to an air pump including a low pressure gauge protective device.
  • China Patent No. 102562517 discloses an inflator embedded with a pressure gage, which includes a base with a hole, a hose connected to the base, a cylinder jointed to the hole, a piston rod movable in the cylinder to enable the hose to output pressurized air, and a pressure gage installed in the cylinder.
  • the inflation pressure of bicycle tires ranges from below 30 PSI (2 BAR; 207 KPA) for tubeless mountain bike tires to 220 PSI (15 BAR; 1,517 KPA) for tubular track racing tires.
  • the aforementioned air pump cannot accurately and precisely measure and indicate the lower pressure bike tires, which are often used on mountain bikes and for riding in snow.
  • the main purpose is to provide an air pump includes an inflating device, a pressure gauge, and a protective device.
  • the inflating device includes a base, a cylinder, a piston rod, an inlet portion, a detection portion, and an outlet portion.
  • the cylinder is connected to the base.
  • the piston rod is slidably disposed inside the cylinder.
  • the inlet portion is arranged at the base and engaged with the cylinder.
  • a passage is arranged at the base and includes a first section, a second section, and third section interconnected with each other. The first section is interconnected with the inlet portion.
  • the second section is interconnected with the detection portion.
  • the third section interconnected with the outlet portion.
  • the pressure gauge is mounted on the detection portion.
  • the protective device is disposed in the passage and includes a body and a sliding member.
  • An outer periphery of the body is airtightly abutted against an inner periphery of the passage.
  • the body includes first and second ends spaced from each other, a slot, and a hole.
  • the first end of the body is located adjacent to the inlet portion.
  • the slot extends from the first end of the body to the second end of the body.
  • the hole is located between the first and second ends of the body and interconnected with the slot and the inlet portion.
  • the sliding member includes first and second ends spaced from each other, a wide section, and a narrow section. The first end of the sliding member inserts into the slot via the first end of the body.
  • the first end of the sliding member is located between the hole and the second end of the body and airtightly abutted against an inner periphery of the slot.
  • the second end of the sliding member protrudes out of the slot and forms the wide section.
  • a width of the wide section is not less than a width of the slot.
  • the narrow section is located between first and second ends of the sliding member. A width of the narrow section is less than the width of the slot.
  • An advantage of the air pump according to the present invention is that the sliding member is movable relative to the base to adjust a gap size between the base and the body for controlling air flow pressure in an affordable range of the pressure gauge.
  • FIG. 1 is a perspective view of an air pump of a first embodiment according to the present invention.
  • FIG. 2 is a partial, exploded perspective view of the air pump of FIG. 1 .
  • FIG. 3 is a partial, enlarged cross sectional view of the air pump of FIG. 1 .
  • FIG. 4 is a continued view of the air pump of FIG. 3 and illustrates a piston rod moving forth inside a cylinder to push air to pass through a manifold and a protective device.
  • FIG. 5 is a partial, enlarged view of the air pump of FIG. 4 and illustrates the pressurized air flowing through the protective device.
  • FIG. 6 is a partial, top view of the air pump of FIG. 1 and illustrates a pressure gauge indicating the pressure value while the piston rod pushing air.
  • FIG. 7 is a continued view of the air pump of FIG. 4 and illustrates the piston rod moving back inside the cylinder to draw in air from outside.
  • FIG. 8 is a partial, top view of the air pump of FIG. 1 and illustrates the pressure gauge indicating the pressure value while the piston rod drawing air from outside.
  • FIG. 9 is a partial, enlarged cross sectional view of an air pump of a second embodiment according to the present invention.
  • FIG. 10 is a continued view of the air pump of FIG. 9 and illustrates a piston rod moving forth inside a cylinder to push air to pass through a manifold and a protective device.
  • FIG. 11 is a partial, enlarged view of the air pump of FIG. 10 and illustrates the pressurized air flowing through a protective device.
  • FIG. 12 is a continued view of the air pump of FIG. 10 and illustrates the piston rod moving back inside the cylinder to draw in air from outside.
  • FIG. 13 is a perspective view of an air pump of a third embodiment according to the present invention.
  • FIG. 14 is a partial, exploded perspective view of the air pump of FIG. 13 .
  • FIG. 15 is a partial, cross sectional view of the air pump of FIG. 13 .
  • FIG. 16 is a continued view of the air pump of FIG. 15 and illustrates a piston rod moving forth inside a cylinder to push air to pass through a manifold and a protective device.
  • FIG. 17 is a partial, enlarged view of the air pump of FIG. 16 .
  • FIG. 18 is a continued view of the air pump of FIG. 16 and illustrates the piston rod moving back inside the cylinder to draw in air from outside.
  • FIGS. 1-8 show an air pump 10 of a first embodiment according to the present invention.
  • the air pump 10 includes an inflating device 20 , a pressure gauge 30 , and a protective device 40 .
  • the inflating device 20 includes a base 21 , a cylinder 22 , a piston rod 23 , a recess 24 , an inlet portion 25 , a detection portion 26 , an outlet portion 27 , and a manifold 28 .
  • the base 21 includes a bottom surface 211 and a top surface 212 spaced from each other. The bottom surface 211 is adapted to be seated on the ground.
  • An end of the cylinder 22 is connected to the base 21 .
  • the piston rod 23 is slidably disposed inside the cylinder 22 and connected with a piston for pushing air.
  • the recess 24 is formed in the base 21 and extends from the bottom surface 211 to the top surface 212 .
  • the inlet portion 25 and the detection portion 26 are respectively disposed on two opposite ends of the top surface 212 of the base 21 and intercommunicated with the recess 24 .
  • the inlet portion 25 is arranged at the base 21 and engaged with the cylinder 22 .
  • the outlet portion 27 is disposed between the inlet portion 25 and the detection portion 26 on the top surface 212 of the base 21 and interconnected with the recess 24 .
  • the outlet portion 27 is connected to a hose 271 , and an end of the hose 271 opposite to the outlet portion 27 is connected to a nozzle 272 adapted for engaging a tire of bike for inflating.
  • the manifold 28 is mounted in the recess 24 and forms a passage 281 linearly extending therethrough.
  • the passage 281 is arranged at the base 21 and includes a first section 282 , a second section 283 , and third section 284 interconnected with each other.
  • the first section 282 is interconnected with the inlet portion 25 .
  • the second section 283 is interconnected with the detection portion 26 .
  • the third section 284 is interconnected with the outlet portion 27 .
  • the pressure gauge 30 is mounted on the base 21 .
  • the pressure gauge 30 is mounted on the detection portion 26 and displayed on the top surface 212 .
  • a pressure measurement upper limit value of the pressure gauge 30 is less than 30 PSI.
  • the protective device 40 disposed in the passage 281 and received in the detection portion 26 .
  • the protective device 40 includes a body 41 , a sliding member 42 , a stopper 43 , and a guiding member 44 .
  • the body 41 includes first and second ends 411 and 412 spaced from each other, a slot 413 , and a hole 414 .
  • the first end 411 of the body 41 is located adjacent to the inlet portion 25 .
  • the slot 413 extends from the first end 411 to the second end 412 .
  • the hole 414 is located between the first and second ends 411 and 412 and interconnected with the slot 413 and the inlet portion 25 .
  • the hole 414 is interconnected to an air inlet port of the pressure gauge 30 .
  • the sliding member 42 includes first and second ends 421 and 422 spaced from each other, a wide section 423 , and a narrow section 424 .
  • the first end 421 of the sliding member 42 inserts into the slot 413 via the first end 411 of the body 41 , and is located between the hole 414 and the second end 412 of the body, 41 to airtightly abut against an inner periphery of the slot 413 .
  • the second end 422 of the sliding member 42 protrudes out of the slot 413 and forms the wide section 423 .
  • a width of the wide section 423 is not less than a width of the slot 413 .
  • the narrow section 424 is located between first and second ends 421 and 422 of the sliding member 42 .
  • a width of the narrow section 424 is less than the width of the slot 413 .
  • the sliding member 42 is movable relative to the base 21 to adjust a gap size between the base 21 and the body 41 .
  • the stopper 43 is located at the second end 412 of the body 41 and threadly engaged in the slot 413 to seal a side of the slot 413 adjacent to the second end 412 of the body 41 . Moreover, the stopper 43 is rotatable to synchronously move in the slot 413 along an axis of the body 41 .
  • the guiding member 44 is disposed in the passage 281 and faces to the wide section 423 of the sliding member 42 .
  • the guiding member 44 includes a plurality of retaining walls 441 abutted against the inner periphery of the passage 281 . Furthermore, every two of the retaining walls 441 form a channel 442 linearly extending therethrough.
  • a user can push the piston rod 23 to move forth inside the cylinder 22 to push air.
  • the pressurized air passes through the passage 281 and is rectified by the plurality of channels 442 of the guiding member 44 .
  • a part of the pressurized air flowing into the third section 284 passes through the hose 271 and the nozzle 272 into to a tire (not shown).
  • the sliding member 42 is movable relative to the base 21 to adjust the gap size between the base 21 and the body 41 to prevent the excessive pressurized air violently to damage the pressure gage 30 during pumping operations.
  • FIGS. 9-12 show an air pump in accordance with a second embodiment of the present invention.
  • the second embodiment is generally similar to the first embodiment except that the protective device 40 a further includes a biasing member 45 a arranged between the sliding member 42 a and the stopper 43 a. Two opposite ends of the biasing member 45 a respectively bias against the sliding member 42 a and the stopper 43 a.
  • the biasing member 45 a is a spiral spring.
  • the biasing member 45 a When the pressurized air pushes against the sliding member 42 a, the biasing member 45 a also biases against the sliding member 42 a to keep the gap having an appropriate size to protect the pressure gauge 30 and to prevent the air flow rate too low. Additionally, the stopper 43 a is movable with respect to the body 41 a to adjust the biasing force value produce by the biasing member 45 a.
  • FIGS. 13-15 show an air pump 10 b in accordance with a third embodiment of the present invention.
  • the third embodiment is generally similar to the first embodiment except that the pressure gauge 30 b is engaged in an adapting portion 31 b, and a bottom of the adapting portion 31 b is connected to an extension tube 32 b configured to connected with the base 21 b.
  • the protective device 40 b is received in the extension tube 32 b.
  • a side of the adapting portion 31 b is connected with a holding portion 33 b arranged around a periphery of the cylinder 22 b.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Measuring Fluid Pressure (AREA)
US14/708,357 2014-07-10 2015-05-11 Air Pump with Low Pressure Gauge Protective Device Abandoned US20160010637A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TW103123791A TW201602537A (zh) 2014-07-10 2014-07-10 具有低壓壓力錶保護裝置之打氣筒
TW103123791 2014-07-10

Publications (1)

Publication Number Publication Date
US20160010637A1 true US20160010637A1 (en) 2016-01-14

Family

ID=54851793

Family Applications (1)

Application Number Title Priority Date Filing Date
US14/708,357 Abandoned US20160010637A1 (en) 2014-07-10 2015-05-11 Air Pump with Low Pressure Gauge Protective Device

Country Status (3)

Country Link
US (1) US20160010637A1 (zh)
DE (1) DE102015107713A1 (zh)
TW (1) TW201602537A (zh)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170112234A1 (en) * 2011-04-06 2017-04-27 Nike, Inc. Article of Footwear With An Adaptive Fluid System
US20170261007A1 (en) * 2016-03-10 2017-09-14 Beto Engineering & Marketing Co., Ltd. Hand pump with air storage tank
CN109505752A (zh) * 2018-12-27 2019-03-22 昆山十全塑胶五金产品有限公司 可预设压力值的打气筒
US20210239228A1 (en) * 2020-01-31 2021-08-05 Beto Engineering and Marketing Co., Ltd. Air inflation device having rotatable pressure gauge
US20210239227A1 (en) * 2020-01-31 2021-08-05 Beto Engineering and Marketing Co., Ltd. Air inflation device having rotatable pressure gauge
US20220049688A1 (en) * 2020-05-22 2022-02-17 Scott Wu Variable-pressure air pump
US11408408B2 (en) * 2019-11-19 2022-08-09 Scott Wu Portable air pump including a piston movable relative to a cylinder provided with a first through-hole, a pivoting seat provided with a second through-hole, a connection member provided with a third through-hole, and a head seat provided with a fourth through-hole, wherein an axial member is mounted through the first through fourth through-holes
US11480167B2 (en) * 2020-05-22 2022-10-25 Scott Wu Variable pressure air pump having a first cylinder defining a first chamber and a second cylinder defining a second chamber and a discharge device including a switch with at least one flow guide portion fluidly connected to the outside
US11486377B1 (en) * 2021-07-09 2022-11-01 Scott Wu Quickly assembled air pump comprising a cylinder with a retaining hold adjacent to an opening for a position rod wherein a retaining portion of an upper cover is engaged with the retaining hole and a conical lateral face of a piston is selectively abutted against an extension portion of the upper cover
TWI790974B (zh) * 2022-05-27 2023-01-21 吳樹木 組合式打氣筒

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW201221767A (en) * 2010-11-30 2012-06-01 Beto Engineering & Marketing Air pump pressure gauge
CN102562517B (zh) 2010-12-24 2014-08-06 双馀实业有限公司 嵌入压力表的打气筒
TWI485326B (zh) * 2012-03-05 2015-05-21 Beto Engineering & Marketing Can measure the pressure of the pump
TWM448389U (zh) * 2012-09-14 2013-03-11 Zhen-Yuan Weng 洩壓閥之改良結構

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11457695B2 (en) 2011-04-06 2022-10-04 Nike, Inc. Article of footwear with an adaptive fluid system
US10258105B2 (en) * 2011-04-06 2019-04-16 Nike, Inc. Article of footwear with an adaptive fluid system
US10842226B2 (en) 2011-04-06 2020-11-24 Nike, Inc. Article of footwear with an adaptive fluid system
US11849803B2 (en) 2011-04-06 2023-12-26 Nike, Inc. Article of footwear with an adaptive fluid system
US20170112234A1 (en) * 2011-04-06 2017-04-27 Nike, Inc. Article of Footwear With An Adaptive Fluid System
US20170261007A1 (en) * 2016-03-10 2017-09-14 Beto Engineering & Marketing Co., Ltd. Hand pump with air storage tank
US10344750B2 (en) * 2016-03-10 2019-07-09 Beto Engineering & Marketing Co., Ltd. Hand pump with air storage tank
CN109505752A (zh) * 2018-12-27 2019-03-22 昆山十全塑胶五金产品有限公司 可预设压力值的打气筒
US11713753B2 (en) * 2019-11-19 2023-08-01 Scott Wu Portable air pump including a piston movable relative to a cylinder provided with an axial member mounted through a third through-hole, and a head seat provided with a fourth through-hole, wherein an axial member is mounted through the third and fourth through-holes
US20220333587A1 (en) * 2019-11-19 2022-10-20 Scott Wu Portable air pump
US11408408B2 (en) * 2019-11-19 2022-08-09 Scott Wu Portable air pump including a piston movable relative to a cylinder provided with a first through-hole, a pivoting seat provided with a second through-hole, a connection member provided with a third through-hole, and a head seat provided with a fourth through-hole, wherein an axial member is mounted through the first through fourth through-holes
US11885423B2 (en) * 2020-01-31 2024-01-30 Beto Engineering and Marketing Co., Ltd. Air inflation device having rotatable pressure gauge
US20210239227A1 (en) * 2020-01-31 2021-08-05 Beto Engineering and Marketing Co., Ltd. Air inflation device having rotatable pressure gauge
US11512685B2 (en) * 2020-01-31 2022-11-29 Beto Engineering and Marketing Co., Ltd. Air inflation device having rotatable pressure gauge
US20210239228A1 (en) * 2020-01-31 2021-08-05 Beto Engineering and Marketing Co., Ltd. Air inflation device having rotatable pressure gauge
US11480167B2 (en) * 2020-05-22 2022-10-25 Scott Wu Variable pressure air pump having a first cylinder defining a first chamber and a second cylinder defining a second chamber and a discharge device including a switch with at least one flow guide portion fluidly connected to the outside
US11655808B2 (en) * 2020-05-22 2023-05-23 Scott Wu Variable-pressure air pump
US20220049688A1 (en) * 2020-05-22 2022-02-17 Scott Wu Variable-pressure air pump
US11486377B1 (en) * 2021-07-09 2022-11-01 Scott Wu Quickly assembled air pump comprising a cylinder with a retaining hold adjacent to an opening for a position rod wherein a retaining portion of an upper cover is engaged with the retaining hole and a conical lateral face of a piston is selectively abutted against an extension portion of the upper cover
TWI790974B (zh) * 2022-05-27 2023-01-21 吳樹木 組合式打氣筒

Also Published As

Publication number Publication date
DE102015107713A1 (de) 2016-01-14
TW201602537A (zh) 2016-01-16
TWI504875B (zh) 2015-10-21

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