Air Pump Cylinder
a technology of air pump and cylinder, which is applied in the direction of pump components, positive displacement liquid engines, pumps, etc., can solve the problems of saving manufacturing time and cost, and achieve the effect of easy and fast assembly and manufacturing
Inactive Publication Date: 2014-01-23
WANG WEI CHI
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
The present invention provides an air pump cylinder that can be easily and quickly assembled and manufactured. The cylinder includes a housing, an O-ring and a cover. The housing has a base tube and an connecting tube with projections, while the O-ring is mounted around the connecting tube. The cover is engaged with the connecting tube and has grooves that correspond to the projections of the connecting tube. The grooves have an axial portion and a locking portion and the cover is rotated to make the projections engage the locking portions of the grooves and tightly clamp the O-ring between the connecting tube and the cover. This simplifies the assembly process without the use of bolts, saving manufacturing time and cost.
Problems solved by technology
Besides, threaded holes through the housing are not required, thereby saving manufacturing time and cost.
Method used
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Embodiment Construction
[0015]With reference to FIGS. 1 to 3, an air pump cylinder 1 in accordance with the present invention comprises a housing 10, an O-ring 20 and a cover 30.
[0016]The housing 10 is made of plastic or alloy, is integrally formed as one piece and includes a base tube 11, a connecting tube 12 and an interface wall 13. The base tube 11 has a front end, a rear end 112 and a piston chamber 111. The piston chamber 111 is defined in the base tube 11. A piston rod 60 is inserted in the piston chamber 111 from the rear end 112. The connecting tube 12 is formed on the front end of the base tube 11 and has an outer surface, a valve chamber 121, and a plurality of projections 124. The valve chamber 121 is defined in the connecting tube 12 for receiving a valve 40 that includes a body 41 and a spring 42. The projections 124 extend from the outer surface of the connecting tube 12. The interface wall 13 is formed between the base tube 11 and the connecting tube 12 and has a center, a hole 131 and an a...
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An air pump cylinder has a housing, a cover and an O-ring. The housing includes a connecting tube. The connecting tube has a plurality of projections extending therefrom. The cover is hermetically engaged with the connecting tube of the housing and includes a cap. The cap has an annular sidewall and a plurality of grooves. The grooves are formed in the annular sidewall and each groove has an axial portion and a locking portion. The projections of the connecting tube of the housing are disposed into the axial portions of the grooves and the cover is then rotated to make the projections engage the locking portions of grooves and to make the O-ring tightly clamped between the connecting tube of the housing and the cap of the cover. Therefore, the air pump cylinder can be easily assembled and manufactured without the use of bolts.
Description
BACKGROUND OF THE INVENTION[0001]1. Field of the Invention The present invention relates to an air pump, and more particularly to an air pump cylinder that can be easily and quickly assembled and manufactured.[0002]2. Description of the Prior Arts[0003]An air pump is used to pump air and is driven by electricity or manual power. With reference to FIG. 7, a conventional air pump driven by electricity comprises an air pump cylinder 80 and an electric drive mechanism. The air pump cylinder 80 includes a housing 81, a cover 82, a plurality of bolts 83 and an O-ring 84. The housing 81 and the cover 82 are made of zinc alloy. The housing 81 has a plurality of threaded holes therethrough. The cover 82 has a plurality of through holes therethrough. The bolts 83 pass through the through holes of the cover 82 and are screwed into the threaded holes of the housing 81 to hermetically secure the cover 82 to the housing 81. The O-ring 84 is clamped between the cover 82 and the housing 81. A pipe ...
Claims
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IPC IPC(8): F04B41/00
CPCF04B41/00F04B33/005F04B33/02F04B39/121F04B39/123
Inventor WANG, WEI-CHI
Owner WANG WEI CHI