US20130186266A1 - Air pump - Google Patents

Air pump Download PDF

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Publication number
US20130186266A1
US20130186266A1 US13/615,438 US201213615438A US2013186266A1 US 20130186266 A1 US20130186266 A1 US 20130186266A1 US 201213615438 A US201213615438 A US 201213615438A US 2013186266 A1 US2013186266 A1 US 2013186266A1
Authority
US
United States
Prior art keywords
handle
air pump
piston rod
engaging part
face
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
US13/615,438
Other languages
English (en)
Inventor
Keng-Fong CHU
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.)
Jiao Hsiung Ind Corp
Original Assignee
Jiao Hsiung Ind Corp
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 Jiao Hsiung Ind Corp filed Critical Jiao Hsiung Ind Corp
Assigned to JIAO HSIUNG INDUSTRY CORP. reassignment JIAO HSIUNG INDUSTRY CORP. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHU, KENG-FONG
Publication of US20130186266A1 publication Critical patent/US20130186266A1/en
Abandoned legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B33/00Pumps actuated by muscle power, e.g. for inflating

Definitions

  • the invention relates to an air pump, and more particularly to the air pump having a handle steadily mounted on a piston rod to prevent a relative rotation between the handle and the piston rod.
  • an air pump comprises a body 50 , a piston rod 60 and a handle 70 .
  • the body 50 has an end surface and a nozzle 51 .
  • the nozzle 51 is mounted on the end surface of the body 50 .
  • the piston rod 60 has a top end, a bottom end, an outer thread and a piston.
  • the top end of the piston rod 60 is opposite to the bottom end of the piston rod 60 .
  • the bottom end of the piston rod 60 is movably inserted into the body 50 .
  • the outer thread is formed near the top end of the piston rod 60 .
  • the piston is mounted on the bottom end of the piston rod 60 .
  • the handle 70 has a fixation trough 71 and an inner thread.
  • the fixation trough 71 is formed in the handle 70 .
  • the inner thread is formed in the fixation trough 71 and is screwed with the outer thread of the piston rod 60 , such that the handle 70 is mounted on the top end of the piston rod 60 .
  • the purpose of the handle 70 is to be held easily by a user and to afford inflation of a chamber such as a tire tube by pushing and pulling the piston rod 60 .
  • the force being pressed on the handle 70 may cause the relative rotation between the handle 70 and the piston rod 60 , and then the handle 70 is easily loosened from the piston rod 60 . Therefore, users can not hold the handle 70 steadily and need to reattach the handle 70 with the piston rod 60 .
  • the screw force between the handle 70 and the piston rod 60 is decreased when the air pump is used for a period and also because the handle 70 frequently loosens and escapes and is then tightly screwed with the piston rod 60 , causing the threaded engagement to be worn.
  • the present invention provides an air pump to obviate the aforementioned problems.
  • An objective of the invention is to provide an air pump to prevent a relative rotation between a handle and a piston rod.
  • the air pump comprises a body, a piston rod and a handle.
  • the body is hollow and has a nozzle.
  • the piston rod is inserted into the body and has a rod body, a piston, a convex ring and a first engaging part.
  • the rod body has a top end and a bottom end. The bottom end is opposite to the top end of the rod body and is inserted into the body.
  • the piston is mounted on the bottom end of the rod body.
  • the convex ring is radially formed on and protruded from the rod body near the top end of the rod body and has an outer surface, a bottom surface and a retaining surface. The retaining surface is mounted on the bottom surface of the convex ring of the piston rod.
  • the first engaging part is longitudinally mounted on the outer surface of the convex ring of the piston rod.
  • the handle is mounted on the top end of the rod body and has a connecting end, a face, a fixation trough, a retaining ring and a second engaging part.
  • the connecting end is connected to the top end of the rod body.
  • the face is formed on the connecting end of the handle rod.
  • the fixation trough is formed in the face of the handle and has an inner surface.
  • the retaining ring is radially protruded from the inner surface of the fixation trough and abuts against the retaining surface of the convex ring.
  • the second engaging part is longitudinally mounted on the inner surface of the fixation trough and is engaged with the first engaging part of the piston rod.
  • FIG. 1 is a side view of a first embodiment of an air pump in accordance with the present invention
  • FIG. 2 is an enlarged exploded perspective view of the air pump in FIG. 1 ;
  • FIG. 3 is an enlarged cross sectional side view of the air pump in FIG. 1 ;
  • FIG. 4 is a cross sectional bottom view of the air pump along line 4 - 4 in FIG. 1 ;
  • FIG. 5 is an exploded perspective view of a second embodiment of an air pump in accordance with the present invention.
  • FIG. 6 is a side view in partial section of an air pump in accordance with the prior art.
  • an air pump in accordance with the present invention comprises a body 10 , a piston rod 20 and a handle 30 .
  • the body 10 is hollow and has an end surface and a nozzle 11 .
  • the nozzle 11 is mounted on the end surface of the body 10 .
  • the piston rod 20 is movably inserted into the body 10 .
  • the piston rod 20 comprises a rod body, a piston 21 , a convex ring 22 and a first engaging part 23 .
  • the rod body has a top end and a bottom end. The bottom end is opposite to the top end of the rod body and is inserted into the body 10 .
  • the piston 21 is mounted on the bottom end of the rod body.
  • the convex ring 22 is radially formed on and protruded from the rod body near the top end of the rod body.
  • the convex ring 22 has a retaining surface and an outer surface. The retaining surface is formed on a bottom surface of the convex ring 22 of the piston rod 20 .
  • the first engaging part 23 is longitudinally mounted on the outer surface of the convex ring 22 of the piston rod 20 .
  • the handle 30 is steadily mounted on the top end of the rod body.
  • the handle 30 has a connecting end, a face, a fixation trough 31 , a retaining ring 32 and a second engaging part 33 .
  • the connecting end is connected to the top end of the rod body.
  • the face is formed on the connecting end of the handle 30 .
  • the fixation trough 31 is formed in the face of the handle 30 and has an inner surface.
  • the retaining ring 32 is radially protruded from the inner surface of the fixation trough 31 and abuts against the retaining surface of the convex ring 22 .
  • the second engaging part 33 is longitudinally mounted on the inner surface of the fixation trough 31 and is engaged with the first engaging part 23 of the piston rod 20 .
  • the handle 30 is a T-shaped handle and has a transverse part 301 and a longitudinal part 302 , and the face and the fixation trough 31 of the handle 30 are formed on an end surface of the longitudinal part 302 of the handle 30 .
  • the handle 30 A is cylindrical. The face and the fixation trough 31 of the handle 30 A are formed on an end surface of the cylindrical handle 30 A.
  • the air pump has multiple slip-resistant ribs formed around and protruding from the handle 30 A.
  • first engaging part 23 of the piston rod 20 is a protruding rib
  • second engaging part 33 of the handle 30 is a groove
  • the protruding rib is fixedly inserted into the groove.
  • first engaging part 23 of the piston rod 20 is a groove
  • the second engaging part 33 of the handle 30 is a protruding rib.
  • the second engaging part 33 of the handle 30 is aligned with the first engaging part 23 of the piston rod 20 .
  • the top end of the rod body of the piston rod 20 is then pressed into the fixation trough 31 of the handle 30 , and the convex ring 22 and the first engaging part 23 are both located in the fixation trough 31 of the handle 30 .
  • the retaining ring 32 abuts against the retaining surface of the convex ring 22 to prevent the handle 30 being detached from the piston rod 20 .
  • the air pump in accordance with the present invention does not have the problem of the decrement of the screw force between the handle and the piston rod of the prior art even when the air pump in accordance with the present invention is used for a long period.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Reciprocating Pumps (AREA)
US13/615,438 2012-01-20 2012-09-13 Air pump Abandoned US20130186266A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TW101201620U TWM430530U (en) 2012-01-20 2012-01-20 Inflating device
TW101201620 2012-01-20

Publications (1)

Publication Number Publication Date
US20130186266A1 true US20130186266A1 (en) 2013-07-25

Family

ID=46722365

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/615,438 Abandoned US20130186266A1 (en) 2012-01-20 2012-09-13 Air pump

Country Status (4)

Country Link
US (1) US20130186266A1 (de)
CN (1) CN103216415B (de)
DE (1) DE102012108899B4 (de)
TW (1) TWM430530U (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWM430530U (en) 2012-01-20 2012-06-01 Jiao Hsiung Industry Corp Inflating device

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US785154A (en) * 1904-02-17 1905-03-21 Gaston E Cordeau Hand air-pump.
US1441829A (en) * 1920-04-15 1923-01-09 Charles D Brandt Air pump
US1463109A (en) * 1921-09-16 1923-07-24 Witman Ephraim Air pump
US1478485A (en) * 1922-09-06 1923-12-25 Albert W Morse Hand-operated pump
US3173462A (en) * 1962-02-12 1965-03-16 Stanley Works Hand tools and handles therefor
US5775200A (en) * 1996-10-04 1998-07-07 Peter Tsai Air pump
US6602061B2 (en) * 2000-08-11 2003-08-05 Louis Chuang Easy-to-hold hand pump
US6709188B2 (en) * 2001-04-05 2004-03-23 Alps Electric Co., Ltd. Fitting structure for knobs
US6736618B2 (en) * 2002-07-08 2004-05-18 Scott Wu Pump for easy attachment to bicycle
US20060277809A1 (en) * 2003-12-02 2006-12-14 Moody Joseph R Vertical fore grip with bipod
US20100028180A1 (en) * 2008-07-30 2010-02-04 Shimano Benelux B.V. Bicycle air pump
US7861457B2 (en) * 2003-07-28 2011-01-04 3M Innovative Properties Company Reusable line connector

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB662584A (en) * 1949-07-20 1951-12-05 Bluemel Brothers Ltd Improvements in or relating to inflators for cycle tyres and the like
FR1576502A (de) * 1968-05-09 1969-08-01
TW515478U (en) * 2001-12-27 2002-12-21 Shih Kuo Entpr Co Ltd Structure for pumping shaft of pump
CN2611627Y (zh) * 2003-01-17 2004-04-14 王振海 气筒金属手柄
DE202005011540U1 (de) * 2005-07-22 2005-11-03 Monz Gmbh & Co. Kg Fahrradpumpe
US7762797B2 (en) * 2005-12-22 2010-07-27 Scott Wu Pump
CN201679675U (zh) * 2010-05-25 2010-12-22 杜志刚 一种可置于气囊内部的打气筒
CN201982273U (zh) * 2011-03-14 2011-09-21 杜志刚 便于提拉不易松脱的可置于气囊内部打气筒
TWM430530U (en) 2012-01-20 2012-06-01 Jiao Hsiung Industry Corp Inflating device

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US785154A (en) * 1904-02-17 1905-03-21 Gaston E Cordeau Hand air-pump.
US1441829A (en) * 1920-04-15 1923-01-09 Charles D Brandt Air pump
US1463109A (en) * 1921-09-16 1923-07-24 Witman Ephraim Air pump
US1478485A (en) * 1922-09-06 1923-12-25 Albert W Morse Hand-operated pump
US3173462A (en) * 1962-02-12 1965-03-16 Stanley Works Hand tools and handles therefor
US5775200A (en) * 1996-10-04 1998-07-07 Peter Tsai Air pump
US6602061B2 (en) * 2000-08-11 2003-08-05 Louis Chuang Easy-to-hold hand pump
US6709188B2 (en) * 2001-04-05 2004-03-23 Alps Electric Co., Ltd. Fitting structure for knobs
US6736618B2 (en) * 2002-07-08 2004-05-18 Scott Wu Pump for easy attachment to bicycle
US7861457B2 (en) * 2003-07-28 2011-01-04 3M Innovative Properties Company Reusable line connector
US20060277809A1 (en) * 2003-12-02 2006-12-14 Moody Joseph R Vertical fore grip with bipod
US20100028180A1 (en) * 2008-07-30 2010-02-04 Shimano Benelux B.V. Bicycle air pump

Also Published As

Publication number Publication date
TWM430530U (en) 2012-06-01
CN103216415A (zh) 2013-07-24
DE102012108899B4 (de) 2014-01-23
DE102012108899A1 (de) 2013-07-25
CN103216415B (zh) 2015-11-25

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Legal Events

Date Code Title Description
AS Assignment

Owner name: JIAO HSIUNG INDUSTRY CORP., TAIWAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CHU, KENG-FONG;REEL/FRAME:028959/0617

Effective date: 20120913

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION