US 10,851,796 B2Granted

Single-knob air pump

AssigneeWangli Plastic & Electronics (Huizhou) Co., Ltd.

InventorYonghe Li

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Abstract

A single-knob air pump includes a housing provided with a first air inlet/outlet and a second air inlet/outlet; an air extracting mechanism arranged in the housing; fan blades of the air extracting mechanism arranged in a fan blade chamber provided with an air inlet and an air outlet; an air channel switching mechanism arranged near the fan blade chamber and provided with an air inlet and an air outlet; the air channel switching mechanism operatively connected to a knob mechanism which can control the displacement of the air channel switching mechanism; the second air inlet/outlet provided with an air valve mechanism capable of closing or opening the second air inlet/outlet; and an ejector rod mechanism capable of closing or opening the second air inlet/outlet through the air valve mechanism under the action of the air channel switching mechanism arranged between the air valve mechanism and the air channel switching mechanism.

Claims13

Dependent claims

A single-knob air pump comprising a housing which is provided with a first air inlet/outlet and a second air inlet/outlet, wherein:

an air extracting mechanism is arranged in the housing, and fan blades of the air extracting mechanism are arranged in a fan blade chamber provided with an air inlet and an air outlet;
an air channel switching mechanism is arranged near the fan blade chamber and is provided with an air inlet and an air outlet;
the air channel switching mechanism is operatively connected to a knob mechanism which can control the displacement of the air channel switching mechanism;
and
the second air inlet/outlet is provided with an air valve mechanism capable of closing or opening the second air inlet/outlet, and an ejector rod mechanism capable of closing or opening the second air inlet/outlet through the air valve mechanism under the action of the air channel switching mechanism is provided between the air valve mechanism and the air channel switching mechanism;
so that when the air inlet of the air channel switching mechanism controlled by the knob mechanism is brought into contact with and is communicated with the air outlet of the fan blade chamber, the air outlet of the air channel switching mechanism is opposite to the second air inlet/outlet and the air channel switching mechanism drives the ejector rod mechanism to open the second inlet/outlet through the air valve mechanism, thus performing inflation;
or when the air inlet of the air channel switching mechanism controlled by the knob mechanism is not communicated with the air outlet of the fan blade chamber, the air outlet of the air channel switching mechanism is opposite to the second air inlet/outlet and the air channel switching mechanism drives the ejector rod mechanism to open the second inlet/outlet through the air valve mechanism, thus performing deflation;
or when the knob mechanism controls the air channel switching mechanism to drive the ejector rod mechanism so as to make the air valve mechanism in a restored state, the air valve mechanism closes the second air inlet/outlet to stop working;
and
wherein the air valve mechanism includes a breathable mesh cover arranged on the second air inlet/outlet, and a seal assembly capable of being compressed or reset by the ejector rod mechanism is arranged in the mesh cover;
when the seal assembly is in a compressed state, the seal assembly opens the second air inlet/outlet;
or when the seal assembly is in a reset state, the seal assembly closes the second air inlet/outlet.

9 more elements

A single-knob air pump comprising a housing which is provided with a first air inlet/outlet and a second air inlet/outlet, wherein:

an air extracting mechanism is arranged in the housing, and fan blades of the air extracting mechanism are arranged in a fan blade chamber provided with an air inlet and an air outlet;
an air channel switching mechanism is arranged near the fan blade chamber and is provided with an air inlet and an air outlet;
the air channel switching mechanism is operatively connected to a knob mechanism which can control the displacement of the air channel switching mechanism;
and
the second air inlet/outlet is provided with an air valve mechanism capable of closing or opening the second air inlet/outlet, and an ejector rod mechanism capable of closing or opening the second air inlet/outlet through the air valve mechanism under the action of the air channel switching mechanism is provided between the air valve mechanism and the air channel switching mechanism;
so that when the air inlet of the air channel switching mechanism controlled by the knob mechanism is brought into contact with and is communicated with the air outlet of the fan blade chamber, the air outlet of the air channel switching mechanism is opposite to the second air inlet/outlet and the air channel switching mechanism drives the ejector rod mechanism to open the second inlet/outlet through the air valve mechanism, thus performing inflation;
or when the air inlet of the air channel switching mechanism controlled by the knob mechanism is not communicated with the air outlet of the fan blade chamber, the air outlet of the air channel switching mechanism is opposite to the second air inlet/outlet and the air channel switching mechanism drives the ejector rod mechanism to open the second inlet/outlet through the air valve mechanism, thus performing deflation;
or when the knob mechanism controls the air channel switching mechanism to drive the ejector rod mechanism so as to make the air valve mechanism in a restored state, the air valve mechanism closes the second air inlet/outlet to stop working;
wherein the air outlet of the air channel switching mechanism is provided with a V-shaped structure, including a first inclined plane and a second inclined plane;
when the pump is in an inflation mode, the first inclined plane abuts the ejector rod mechanism;
or when the pump is in an deflation mode, the second inclined plane abuts the ejector rod mechanism;
and
wherein the ejector rod mechanism includes a first ejector rod and a second ejector rod intersecting with each other, a pair of guide slots are arranged in the housing, and two ends of the second ejector rod are embedded in the guide slots, one end of the first ejector rod can abut the first inclined plane or the second inclined plane of the air channel switching mechanism, and the other end thereof can operate the air valve mechanism;
when the pump is in the inflation mode, the first inclined plane abuts an end of the first ejector rod and the other end of the first ejector rod operates the air valve mechanism;
or when the pump is in the deflation mode, the second inclined plane abuts an end of the first ejector rod and the other end of the first ejector rod operates the air valve mechanism.

12 more elements

A single-knob air pump comprising a housing which is provided with a first air inlet/outlet and a second air inlet/outlet, wherein:

an air extracting mechanism is arranged in the housing, and fan blades of the air extracting mechanism are arranged in a fan blade chamber provided with an air inlet and an air outlet;
an air channel switching mechanism is arranged near the fan blade chamber and is provided with an air inlet and an air outlet;
the air channel switching mechanism is operatively connected to a knob mechanism which can control the displacement of the air channel switching mechanism;
and
the second air inlet/outlet is provided with an air valve mechanism capable of closing or opening the second air inlet/outlet, and an ejector rod mechanism capable of closing or opening the second air inlet/outlet through the air valve mechanism under the action of the air channel switching mechanism is provided between the air valve mechanism and the air channel switching mechanism;
so that when the air inlet of the air channel switching mechanism controlled by the knob mechanism is brought into contact with and is communicated with the air outlet of the fan blade chamber, the air outlet of the air channel switching mechanism is opposite to the second air inlet/outlet and the air channel switching mechanism drives the ejector rod mechanism to open the second inlet/outlet through the air valve mechanism, thus performing inflation;
or when the air inlet of the air channel switching mechanism controlled by the knob mechanism is not communicated with the air outlet of the fan blade chamber, the air outlet of the air channel switching mechanism is opposite to the second air inlet/outlet and the air channel switching mechanism drives the ejector rod mechanism to open the second inlet/outlet through the air valve mechanism, thus performing deflation;
or when the knob mechanism controls the air channel switching mechanism to drive the ejector rod mechanism so as to make the air valve mechanism in a restored state, the air valve mechanism closes the second air inlet/outlet to stop working;
and
wherein the knob mechanism includes an air channel switching paddle which is rotatably arranged, a knob is connected to the front surface of the air channel switching paddle, and a blocking rod is arranged on the back surface thereof;
a sliding slot is arranged on the air channel switching mechanism, and the blocking rod is embedded in the sliding slot.

8 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/001,210Filed 6 Jun 2018
Priority: CN 2017 2 1132061 U5 Sep 2017
Published: US 2019/0072099 A17 Mar 2019
Granted: 1 Dec 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

F04D 27/008
Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids: stop safety or alarm devices,…
F04D 29/503
For reversing fluid flow: especially adapted for elastic fluid pumps
A47C 27/082
Of pneumatic type: with non-manual inflation, e.g. with electric pumps
F04D 25/08
Units comprising pumps and their driving means: the working fluid being air, e.g. for ventilation