Air pump device with automatic air replenishing function and method of using same

1 . An air pump device with an automatic air replenishing function, comprising:

a mounting housing, provided with an external air vent, configured to be arranged outside an inflatable product, and a valve port, configured to be connected to an inner cavity of the inflatable product;

an air duct, formed within the mounting housing and with both ends respectively communicated with the external air vent and the valve port;

a blower, provided within the mounting housing and configured to drive air within the air duct to flow;

a control system, provided within the mounting housing and configured to control various electrical parts within the air pump device;

an air replenishing pump, provided within the mounting housing and controlled by the control system; and

an air pressure sensor, configured to collect air pressure data for the control system,

wherein the control system is further configured to monitor an internal air pressure of the inflatable product through the air pressure sensor, and trigger, with a monitored value of air pressure being lower than a preset threshold, the air replenishing pump to output air for entering the inner cavity of the inflatable product,

wherein the air replenishing pump is provided with an outer air inhaling port and an air ejector pipe;

the outer air inhaling port is communicated with the air duct within the mounting housing;

the mounting housing is provided thereon with an air replenishing box;

two opposite sides of the air replenishing box are respectively provided with an air ejector pipe interface and an air replenishing port, the air ejector pipe interface being hermetically butted with the air ejector pipe, and the air replenishing port being configured to communicate the inner cavity of the inflatable product outwards;

a plurality of silencing cotton chunks accommodated inside the air replenishing box are arranged between the air ejector pipe interface and the air replenishing port;

a transition cavity formed inside the air replenishing box is arranged between every two silencing cotton chunks;

the transition cavity is internally provided with a plurality of partition plates each provided thereon with an intermediate channel, and two adjacent intermediate channels are staggered from each other, and

wherein the air replenishing pump inhales air through the outer air inhaling port, inputs an airflow into the air replenishing box through the air ejector pipe and the air ejector pipe interface, drives the airflow to sequentially pass through the silencing cotton chunks, and then outputs the airflow from the air replenishing port to the inner cavity of the inflatable product.

2 . The air pump device according to claim 1 , wherein an outer wall of the mounting housing is provided with a detection port configured to be communicated with the inner cavity of the inflatable product;

the mounting housing is internally provided inside with an air pressure collecting pipe;

one end of the air pressure collecting pipe is hermetically butted with the detection port, and the other end of the air pressure collecting pipe is hermetically butted with a detection end of the air pressure sensor, and

wherein the detection end of the air pressure sensor is communicated with the inner cavity of the inflatable product through the air pressure collecting pipe.

3 . The air pump device according to claim 1 , wherein an air collecting cavity is formed between an inner side of the air replenishing box and one of the silencing cotton chunks, and the air collecting cavity has a smaller space than the transition cavity; and the air ejector pipe interface is connected into the air collecting cavity.

4 . The air pump device according to claim 1 , wherein one side of the air replenishing pump is provided with a support plate fixed within the mounting housing, and a damping block is elastically connected between the support plate and the air replenishing pump.

5 . The air pump device according to claim 1 , wherein the air replenishing pump includes a housing, two opposite ends of the housing are respectively provided with an outer air inhaling port and an air ejector pipe, and the housing is internally provided with an air replenishing motor, an eccentric wheel, a shifting lever, a shifting disc and a plurality of elastic airbags;

wherein an eccentric hole is obliquely provided in the eccentric wheel, and forms a certain included angle with a rotating central hole of the eccentric wheel;

a rotating shaft of the air replenishing motor is sleeved to the rotating central hole of the eccentric wheel;

one end of the shifting lever is inserted into the eccentric hole, and the other end of the shifting lever is inserted into a central hole of the shifting disc;

the plurality of elastic airbags are circumferentially arranged and surround the rotating central hole of the eccentric wheel; and an air outlet of each of the elastic airbags is communicated with the air ejector pipe, and

wherein the shifting disc circumferentially oscillates with the rotation of the eccentric wheel, and the circumferentially oscillating shifting disc sequentially compresses the elastic airbags, which respectively resume expansion after a compressing force is removed.

6 . The air pump device according to claim 5 , wherein the housing is internally provided with an air outlet cover, an air replenishing seat, a front fixing seat and a rear fixing seat which are butted with each other sequentially;

the air ejector pipe is connected into an inner cavity of the air outlet cover;

the elastic airbags are each fixedly provided within the front fixing seat;

a plurality of vent holes are provided in the air replenishing seat and are respectively communicated with the inner cavity of the air outlet cover, and the air outlets of the elastic airbags are respectively butted with and communicated with the vent holes; and

the housing of the air replenishing motor is fixedly butted with the rear fixing seat, and the eccentric wheel, the shifting lever and the shifting disc are respectively accommodated within the rear fixing seat.

7 . The air pump device according to claim 6 , further comprising a plurality of connecting grooves, which are circumferentially arranged and are integrally formed on an outer wall of the air outlet cover, the air replenishing seat, the front fixing seat and the rear fixing seat respectively;

both ends of each of the connecting grooves are respectively formed with a buckling position on the outer wall of the air outlet cover and the rear fixing seat; and

a connecting rod is fittingly sleeved in each of the connecting grooves, and both ends of the connecting rod are respectively formed with a buckle, and the connecting rod is fixedly buckled to the buckling positions on the outer wall of the air outlet cover and the rear fixing seat through the buckles at both ends.

8 . The air pump device according to claim 6 , wherein a plurality of air ejector cavities and an annular cavity are defined within the inner cavity of the air outlet cover; the air outlet cover is further provided with an air ejector hole and an inner air inhaling port; the air ejector hole is located at the center of the air outlet cover and configured to be butted and communicated with the air ejector pipe, and the air ejector cavities each surround the air ejector hole and are all communicated with the air ejector hole; and the annular cavity surrounds the periphery of each of the air ejector cavities and is communicated with the inner air inhaling port.

9 . The air pump device according to claim 8 , wherein the rear fixing seat, the front fixing seat, the air replenishing seat and the air outlet cover are respectively communicated with the inner air inhaling port and the outer air inhaling port; the air replenishing seat is further provided with a plurality of circumferentially distributed first air inhaling through holes, each of which has one end communicated with the annular cavity, and the other end communicated with the inner cavity of the front fixing seat.

10 . The air pump device according to claim 9 , the front fixing seat is provided with a plurality of second air inhaling through holes, each of which has one end communicated with the inner cavity of the front fixing seat, and the other end butted and communicated with a respective one of the first air inhaling through holes, such that the first air inhaling through holes are communicated with the inner cavity of the front fixing seat; the elastic airbags are integrally formed on a substrate, the substrate is located between the air replenishing seat and the front fixing seat and is provided with a plurality of third air inhaling through holes, the front fixing seat is further provided with a plurality of fourth air inhaling through holes at positions corresponding to the third air inhaling through holes, each of the fourth air inhaling through holes has one end communicated with the inner cavity of the front fixing seat, and the other end butted and communicated with a respective one of the third air inhaling through holes; and a plurality of air replenishing grooves are integrally formed on the air replenishing seat, each of the air replenishing grooves has one end communicated with the air outlet of a respective one of the elastic airbags, and the other end communicated with a respective one of the third air inhaling through holes.

11 . The air pump device according to claim 10 , a central cavity is defined within each of the air ejector cavities, and each central cavity is hermetically butted and communicated with a respective one of the vent holes in the air replenishing seat; a multi-section tortuous channel is further defined within each of the air ejector cavities, the multi-section tortuous channel surrounds the periphery of the central cavity, and has one end communicated with the central cavity, and the other end communicated with the air ejector hole in the center of the air outlet cover.

12 . A method for using the air pump device according to claim 1 , comprising steps of inflating an inflatable product:

controlling, by the control system, to open the valve port of the air pump device;

further controlling the blower to rotate and pump in the external air from the external air vent of the air pump device into the air duct of the air pump device, and drive the air within the air duct into the inflatable product through the valve port;

detecting, by the air pressure sensor of the air pump device, the air pressure of the inner cavity of the inflatable product; and

determining if the air pressure detected rises to a preset threshold, if yes, inactivating the blower and closing the valve port of the air pump device by the control system.

13 . The method for using the air pump device according to claim 1 , further comprising steps of increasing the air pressure of the inflatable product:

after the inflation is completed, monitoring, by the control system, the internal air pressure of the inflatable product continuously through the air pressure sensor;

determining that if the value of air pressure monitored by the air pressure sensor is lower than an additional preset threshold, if yes, starting, by the control system, the air replenishing pump of the air pump device to replenish air to the inner cavity of the inflatable product, until the air pressure sensor detected is up to the additional preset threshold, controlling, by the control system, the air replenishing pump to stop operating.

14 . The method for using the air pump device according to claim 12 , further comprising steps of deflating the inflatable product:

controlling, by the control system, to open the valve port of the air pump device, and

further controlling the blower to rotate and continuously drive the air within the air duct of the air pump device to be exhausted to the outside through the external air vent, where the air duct of the air pump device forms a negative pressure and pumps out the air of the inner cavity of the inflatable product through the valve port;

detecting, by the air pressure sensor of the air pump device, the air pressure of the inner cavity of the inflatable product; and

determining that if the value of air pressure detected by the air pressure sensor drops to another preset threshold, if yes, inactivating the blower and closing the valve port of the air pump device controlled by the control system.

15 . The method for using the air pump device according to claim 12 , further comprising steps of decreasing the air pressure in the inflatable product:

controlling, by the control system, to open the valve port, so that the air of the inner cavity of the inflatable product naturally enters the air duct of the air pump device and is exhausted to the outside through the external air vent;

detecting, by the air pressure sensor of the air pump device, the air pressure of the inner cavity of the inflatable product; and

determining that if the air pressure detected is equal to or lower than an additional preset threshold, if the air pressure detected is equal to the additional preset threshold, controlling, by the control system, to close the valve port of the air pump device; and if the air pressure detected is lower than the additional preset threshold, starting, by the control system, the air replenishing pump of the air pump device to replenish air to the inner cavity of the inflatable product, until the air pressure detected is up to the additional preset threshold, controlling, by the control system, the air replenishing pump to stop operating.