Built-in electric air pumps for inflating objects

Patent metadata

Field	Value
Publication number	US-10443602-B2
Application number	US-201414917272-A
Country	US
Kind code	B2
Filing date	Mar 6, 2014
Priority date	Oct 18, 2013
Publication date	Oct 15, 2019
Grant date	Oct 15, 2019

Abstract

A built-in electric air pump for an inflating object includes a pump casing, a switch hand-wheel, a connection pipe, an air passage switching device, an air pump, and an air valve and a power switch. The pump casing includes a box-shaped chamber. The switch hand-wheel is provided at an external lateral side of the panel. The air passage switching device is provided with an internal pipe having a first opening and a second opening respectively arranged at an upper end and a lower end of the internal pipe. The first opening communicates with outside of the inflating object, and the second opening communicates with the air valve. A diaphragm is provided inside the internal pipe. A first venting hole and a second venting hole are respectively provided on internal walls at two sections of the internal pipe above and below the diaphragm. An external sleeve is provided outside the internal pipe. The lower end of the external sleeve is fixedly connected to the pump casing. The lower end of the external sleeve correspondingly communicates with the air valve. A wall of the external sleeve is provided with an air outlet communicating with an air inlet of the air pump and an air inlet communicating with an air outlet of the air pump. An upper end of the connection pipe is connected to and communicated with the switch hand-wheel, and the lower end of the connection pipe is muff-coupled with the upper end of the internal pipe. The diaphragm of the internal pipe contacts a valve rod of the air valve such that the valve is opened by an applied external force and the diaphragm and the value are moved together.

First claim

What is claimed is:

1. A built-in electric air pump for an inflating object, comprising:
a pump casing, a switch hand-wheel, a connection pipe, an air passage switching device, an air pump, an air valve and a power switch, wherein:
the pump casing is a box-shaped chamber; the connection pipe, the air passage switching device and the air pump are provided within the chamber of the pump casing; the air valve is provided at bottom of the pump casing; a panel with an opening is provided at a top portion of the pump casing; the switch hand-wheel being provided at an external lateral side of the panel; the air passage switching device is provided with an internal pipe disposed on a center axis, the internal pipe having a first opening and a second opening respectively arranged at an upper end and a lower end of the internal pipe; the first opening communicates with outside space of the inflating object via the connection pipe; the second opening communicates with the air valve; a diaphragm is provided inside the internal pipe for separating inside of the internal pipe into two air separated sections as a top section and a bottom section; a first venting hole and a second venting hole are respectively provided on internal walls of the internal pipe of the top section and the bottom section that are axially spaced from one another and above and below the diaphragm; an external sleeve is provided outside the internal pipe; a third opening and a fourth opening are respectively provided at an upper end and a lower end of the external sleeve; an inner wall of the external sleeve corresponds with an outer wall of the internal pipe; the lower end of the external sleeve is fixedly connected to the pump casing and the lower end of the external sleeve correspondingly communicates with the air valve; a wall of the external sleeve is provided with an air outlet communicating with an air inlet of the air pump, and the wall of the external sleeve is provided with an air inlet communicating with an air outlet of the air pump; an upper end of the connection pipe is connected to and communicates with the switch hand-wheel; a lower end of the connection pipe is muff-coupled with the upper end of the internal pipe; and the diaphragm of the internal pipe contacts a valve rod of the air valve such that the valve is opened by an applied external force along the center axis and the diaphragm and the value are moved together.

2. The built-in electric air pump for an inflating object according to the claim 1 , wherein the internal pipe of the air passage switching device comprises three variable positions, and when the internal pipe is at a first position, the first venting hole and the second venting hole of the internal pipe respectively communicate with the air outlet and the air inlet of the external sleeve such that air flows from outside of the inflating object to the inside of the inflating object; when the internal pipe is at a second position, the first venting hole and the second venting hole of the internal pipe respectively communicate with the air inlet and the air outlet of the external sleeve such that the air flows from the inside of the inflating object to the outside of the inflating object; and
when the internal pipe is at a third position, both the first venting hole and the second venting hole of the internal pipe have not communicated with the air inlet and air outlet of the external sleeve.

3. The built-in electric air pump for an inflating object according to the claim 1 , wherein an outer surface of the internal pipe of the air passage switching device is provided with at least one first slider matching with the connection pipe and at least one second slider matching with the external sleeve.

4. The built-in electric air pump for an inflating object according to the claim 3 , wherein the internal pipe is provided with a flange extending between the at least one first slider and the at least one second slider, an arcuate piece is provided at an edge of a top surface of the flange, and the arcuate piece moves together with the power switch arranged at a side of the arcuate piece.

5. The built-in electric air pump for an inflating object according to the claim 3 , wherein a wall of the external sleeve of the air passage switching device is provided with a laterally-slidable wave chute lower at two lateral ends and higher at middle, and the waved chute matches with the at least one second slider of the internal pipe.

6. The built-in electric air pump for an inflating object according to the claim 3 , wherein at least one linear groove is provided at a lower part of an inner wall of the connection pipe, and the at least one linear groove matches with the at least one first slider of the internal pipe.

7. The built-in electric air pump for an inflating object according to the claim 1 , wherein a flange having a diameter larger than an opening of the front panel is provided at a top end of the connection pipe, and at least one boss being fixedly connected to the switch hand-wheel is provided on an upper surface of the flange.

8. The built-in electric air pump for an inflating object according to the claim 1 , wherein the air pump comprises a blade cap fixedly connected to the pump casing, a blade provide within the blade cap, and a motor provided within the chamber of the pump casing, the blade cap is provided with an air pump inlet and an air pump outlet, and an end of a shaft of the motor is connected to the blade by passing through the blade cap.

9. The built-in electric air pump for an inflating object according to the claim 1 , wherein the air valve is provided at bottom of the pump casing, and the air valve comprises a valve piece, a sealing ring, a valve rod, a spring and a valve rod cap, an air valve opening of the pump casing is provided with an air valve supporting bracket, a through hole is provided at a center of the air valve supporting bracket, the valve rod is provided within the through hole of the air valve supporting bracket, upper and lower ends of the valve rod are respectively provided with the valve rod cap and the valve piece, the sealing ring is provided at a rim of the valve piece, the valve rod cap is muff-coupled between a periphery of the valve rod, the air valve supporting bracket and the valve rod cap, a meshed protection cap for protecting the air valve is provided at the air valve opening of the pump casing.

10. The built-in electric air pump for an inflating object according to the claim 1 , wherein the switch hand-wheel is provided with a venting pipe.

11. The built-in electric air pump for an inflating object according to claim 1 , wherein the internal pipe is provided with a first slider and a second slider with a flange there between, an arcuate piece is provided at an edge of a top surface of the flange, and the arcuate piece moves together with the power switch arranged at a side of the arcuate piece.

12. The built-in electric air pump for an inflating object according to the claim 1 , wherein a wall of the external sleeve of the air passage switching device is provided with a laterally-slidable wave chute lower at two lateral ends and higher at middle, and the waved chute matches with a second slider of the internal pipe.

13. The built-in electric air pump for an inflating object according to the claim 1 , wherein at least one linear groove is provided at a lower part of an inner wall of the connection pipe, and the at least one linear groove matches with a first slider of the internal pipe.

Assignees

• Bestway Inflatables & Mat Corp

Inventors

• Liu Feng

Classifications

• A47C27/082

  with non-manual inflation, e.g. with electric pumps · CPC title

• F04D27/00

  Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids · CPC title

• F04D25/068 Primary

  Mechanical details of the pump control unit (pump control details F04D27/00) · CPC title

• F04D29/4206

  especially adapted for elastic fluid pumps · CPC title

• F04D29/28

  for centrifugal or helico-centrifugal pumps {for radial-flow or helico-centrifugal pumps} · CPC title