AIR PUMP

• US 20170074260A1
• Filed: 02/04/2016
• Published: 03/16/2017
• Est. Priority Date: 09/11/2015
• Status: Active Application

• Current Assignee: Xiamen Conjoin Electronics Technology Co., Ltd.
• Original Assignee: Xiamen Conjoin Electronics Technology Co., Ltd.
• Inventors: Yan, Hong
• Granted Patent: US 10,253,768 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61H 1/008 Apparatus for applying pressure or blows almost perpendicular to the body or limb axis, e.g. chiropractic devices for repositioning vertebrae, correcting deformation
• CPC Class Codes: B60N 2/914 Hydro-pneumatic adjustments of the shape
• CPC Class Codes: F04B 43/0045 with a number of independent working chambers which are actuated successively by one mechanism
• CPC Class Codes: F04B 45/02 having bellows
• CPC Class Codes: F04B 45/022 with two or more bellows in parallel
• CPC Class Codes: F04B 45/04 having plate-like flexible members, e.g. diaphragms F04B45/10 takes precedence
• CPC Class Codes: F04B 53/006 Crankshafts
• CPC Class Codes: F04B 53/06 Venting

Abstract

An air pump is disclosed, the lower end of a drive shaft is in active connection with an eccentric hole on an eccentric wheel, and vents are opened on a hole wall of the eccentric hole to use as a heat sink in such a way to expose the lower end of the drive shaft to the outside through the vents, thereby facilitating cooling. In addition, the lower end of the drive shaft is formed into a reduced diameter section corresponding to vents, the edges of which are positioned on the reduced diameter section so as to increase an avoidance clearance, avoiding the friction generated between burrs generated on the edge of the vent upon manufacturing and the drive shaft, thereby improving the product life.

Claims

1. An air pump, constituted by a upper cover, a valve seat, a airbag seat, a base, airbags, a crank shaft, a drive shaft, an eccentric wheel and an electric motor, wherein vents are opened on a hole wall of an eccentric hole to use as a heat sink, allowing a lower end of said drive shaft to be exposed to the outside through said vents, and said lower end of said drive shaft corresponding to said vents is formed into a reduced diameter section, allowing edges of said vents to be positioned on said reduced diameter section.

2. The air pump according to claim 1, wherein said vents are two vents or three vents distributed evenly passed through said hole wall of said active connection hole radially.

3. The air pump according to claim 1, wherein mounting holes corresponding to said supports of said crank shaft are formed on airbag seat, a hole wall of said mounting hole is extended downward to from an accommodating chamber, top edges of said airbags ride on a top edge of said mounting hole of said airbag seat, a bottom column is mounted on said supports of said crank shaft, a hollow cylindrical airbag cavity of a upper section of said airbag body is positioned in said accommodating chamber of said airbag seat, an extrusion entity of a lower section of said airbag body is positioned at a lower side of said accommodating chamber, and a bottom of said hollow cylindrical airbag cavity is in connection with said extrusion entity through a lead angle.

4. The air pump according to claim 3 wherein a cavity wall of said hollow cylindrical airbag cavity of said upper section of said airbag body is composed of a straight wall, lead angle R9.3+0.1 mm and lead angle R1.6±

01 mm from top to bottom, said thickness of said cavity wall of said hollow cylindrical airbag cavity is 0.35±

0.1 mm, and said bottom of said hollow cylindrical airbag cavity is in connection with a top of said extrusion entity through a lead angle R0.3±

0.1 mm.

5. The air pump according to claim 3, wherein said top edges of said airbags are connected together.

6. The air pump according to claim 1, wherein said one-way air outlet valve on said air outlet hole of said valve seat is an assembly valve, having a square cap and valve plate, said square cap covers a central square seat of said valve seat, a top of said square cap is extended outward to form a square sheet, a side of said square sheet is formed 45 degrees angle with a side of square cap, four corners of said square cap are respectively extended outward to form a positioning edge up to said side of said square sheet, a portion of said square sheet between said two adjacent positioning edges is said valve plate, and said valve plate is positioned on one side of said valve seat facing said upper cover and covers said air outlet hole of said valve seat.

7. The air pump according to claim 1, wherein a one-way air inlet valve configured on an air inlet hole of said valve seat is a single umbrella valve, having a umbrella stick and umbrella canopy, wherein said umbrella stick is inserted in said mounting hole of said valve seat, wherein two ends of the umbrella stick 81 are respectively formed into block heads preventing said umbrella valve from loosing corresponding to said mounting hole of said valve seat, and said umbrella canopy covers said air inlet hole of said valve seat, the thickness of said entire umbrella canopy being uniform and a forward direction of said umbrella canopy is formed an acute angle with said umbrella stick.

8. An air pump, constituted by a upper cover, a valve seat, an airbag seat, a base, airbags, a crank shaft, a drive shaft, an eccentric wheel and an electric motor, a upper end of said drive shaft being in active connection with a central hole on a lower end of said crank shaft, wherein vents are opened on a hole wall of said central hole to use as a heat sink, allowing a upper end of said drive shaft to be exposed to the outside through said vents, and said upper end of said drive shaft corresponding to said vents is formed into a reduced diameter section, allowing edges of said vents to be positioned on said reduced diameter section.

9. The air pump according to claim 8, wherein said vents are two vents or three vents distributed evenly passed through said wall hole of said active connection hole radially.

10. The air pump according to claim 8, wherein mounting holes corresponding to said supports of said crank shaft are formed on airbag seat, a hole wall of said mounting hole is extended downward to from an accommodating chamber, top edges of said airbags ride on a top edge of said mounting hole of said airbag seat, a bottom column is mounted on said supports of said crank shaft, a hollow cylindrical airbag cavity of a upper section of said airbag body is positioned in said accommodating chamber of said airbag seat, an extrusion entity of a lower section of said airbag body is positioned at a lower side of said accommodating chamber, and a bottom of said hollow cylindrical airbag cavity is in connection with said extrusion entity through a lead angle.

11. The air pump according to claim 10 wherein a cavity wall of said hollow cylindrical airbag cavity of said upper section of said airbag body is composed of a straight wall, lead angle R9.3+0.1 mm and lead angle R1.6±

01 mm from top to bottom, said thickness of said cavity wall of said hollow cylindrical airbag cavity is 0.35±

0.1 mm, and said bottom of said hollow cylindrical airbag cavity is in connection with a top of said extrusion entity through a lead angle R0.3±

0.1 mm.

12. The air pump according to claim 10, wherein said top edges of said airbags are connected together.

13. The air pump according to claim 8, wherein said one-way air outlet valve on said air outlet hole of said valve seat is an assembly valve, having a square cap and valve plate, said square cap covers a central square seat of said valve seat, a top of said square cap is extended outward to form a square sheet, a side of said square sheet is formed 45 degrees angle with a side of square cap, four corners of said square cap are respectively extended outward to form a positioning edge up to said side of said square sheet, a portion of said square sheet between said two adjacent positioning edges is said valve plate, and said valve plate is positioned on one side of said valve seat facing said upper cover and covers said air outlet hole of said valve seat.

14. the are pump according to claim 8, wherein a one-way air inlet valve configured on an air inlet hole of said valve seat is a single umbrella valve, having a umbrella stick and umbrella canopy, wherein said umbrella stick is inserted in said mounting hole of said valve seat, wherein two ends of the umbrella stick 81 are respectively formed into block heads preventing said umbrella valve from loosing corresponding to said mounting hole of said valve seat, and said umbrella canopy covers said air inlet hole of said valve seat, the thickness of said entire umbrella canopy being uniform and a forward direction of said umbrella canopy is formed an acute angle with said umbrella stick.