A rotary reversing air pump for inflation and deflation

Abstract

This invention relates to a rotary reversing air pump for inflation and deflation, comprising: a pump housing, including a housing with an inner cavity, an inflation / deflation port on the front side of the pump housing, and an inlet / exhaust port on the top side of the pump housing; a one-way valve, installed at the inflation / deflation port, controlling the opening and closing of the inflation / deflation port; a rotary reversing assembly, including a rotary reversing cylinder, a blower assembly, and a knob; a mounting base, having a rotary mounting cavity inside, in which the rotary reversing assembly is mounted; a mounting base connecting air port on the front side of the mounting base; a third flow channel formed between the mounting base and the rotary reversing assembly; a mounting base exhaust port on the rear side of the mounting base corresponding to the rotary reversing cylinder, and a mounting base inlet on the rear side corresponding to the blower assembly; an inlet / exhaust flow channel formed between the rear side of the mounting base and the housing, and the inlet / exhaust flow channel communicating with the inlet / exhaust port. This invention, through the design of the rotary switching cylinder, allows for rapid switching of the air path, thereby achieving inflation and deflation functions. The overall structure is simple and compact, and easy to use.

Description

Technical Field

[0001] This invention relates to the field of air pumps, and in particular to a rotary reversing air pump for inflation and deflation. Background Technology

[0002] Inflatable products are becoming increasingly common, such as inflatable beds, inflatable swimming pools, and inflatable mats. These inflatable products all need to be inflated for use and also need to be deflated for folding and storage. Currently, inflating inflatable products is generally done using a manual air pump or an electric air pump. The inflation process is typically operated by connecting the air pump to the air valve on the inflatable product. Deflating inflatable products is generally done by opening the air valve and allowing the product to deflate naturally.

[0003] Existing air pumps can also have both inflation and deflation functions. They switch between inflation and deflation by pressing or rotating the corresponding control knobs to control the corresponding mechanical structure changes. However, the structure is relatively complex and not very convenient to use.

[0004] With the continuous upgrading of air pump products, how to design an easy-to-use air pump that combines inflation and deflation functions has become an urgent problem to be solved. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention provides a rotary reversing air pump for inflation and deflation. Through the design of the rotary switching cylinder, the air path can be quickly switched, thereby realizing the functions of inflation and deflation. The overall structure is simple and compact and easy to use.

[0006] The technical solution adopted by this invention to solve its technical problem is:

[0007] A rotary reversing air pump for inflation and deflation, comprising:

[0008] The pump housing includes a shell with an inner cavity. The front side of the pump housing is provided with an inflation / deflation port for docking with the inflation product, and the top side of the pump housing is provided with an air inlet / exhaust port that communicates with the external environment.

[0009] A one-way valve, installed at the inflation / deflation port, is used to control the opening and closing of the inflation / deflation port;

[0010] A rotary reversing assembly and a mounting base are installed in the inner cavity of the housing. The rotary reversing assembly includes a rotary reversing cylinder, a blower assembly fixed to the bottom side of the rotary reversing cylinder, and a knob fixed to the top side of the rotary reversing cylinder. The mounting base has a rotary mounting cavity, in which the rotary reversing assembly is installed and has a degree of freedom of rotation. The front side of the mounting base has a mounting base connection port that connects to the air filling / discharging port. A third flow channel is also formed between the mounting base and the rotary reversing assembly. The rear side of the mounting base has a mounting base exhaust port at a position corresponding to the rotary reversing cylinder and a mounting base air inlet at a position corresponding to the blower assembly. An air inlet / exhaust flow channel is formed between the rear side of the mounting base and the housing, and the air inlet / exhaust flow channel communicates with the air inlet / exhaust port.

[0011] When in the inflation state, the air inlet end of the blower assembly is connected to the air inlet of the mounting base, and then to the air inlet and exhaust channels and the air inlet and exhaust ports. The air outlet end of the blower assembly is connected to the air inlet of the mounting base through the rotating reversing cylinder, and then to the inflation and deflation port.

[0012] In the venting state, the air inlet of the blower assembly is connected to the third flow channel, the third flow channel is connected to the mounting base air port through the rotating reversing cylinder, and then connected to the charging / discharging air port. The air outlet of the blower assembly is connected to the mounting base exhaust port through the rotating reversing cylinder, and then connected to the air inlet / exhaust flow channel and the air inlet / exhaust port.

[0013] Furthermore, the one-way valve includes a valve seat and a valve core disposed within the charging / discharging port; the rear end of the valve core passes through the valve seat, and a valve plate is mounted on the front end of the valve core; the valve core has the freedom to move back and forth relative to the valve seat; the valve plate is used to open the charging / discharging port when the valve core moves forward, or to close the charging / discharging port when the valve core moves backward; an air mask is also installed on the outside of the charging / discharging port of the pump housing; a return spring is also provided between the valve plate and the air mask to provide a force for the valve core to move backward; a sealing gasket that cooperates with the charging / discharging port is also provided on the rear side of the valve plate.

[0014] Furthermore, the rotary reversing cylinder includes an outer cylinder and an inner cylinder; a spirally extending partition is provided between the outer cylinder and the inner cylinder to divide the area between the outer cylinder and the inner cylinder into a first flow channel and a second flow channel; a first flow channel air port is opened on the side wall of the outer cylinder near the top of the first flow channel; the bottom side of the first flow channel is connected to the air outlet of the blower assembly; the second flow channel has a side opening; the rotary reversing cylinder is used to connect the first flow channel air port with the mounting base connection air port by rotating the rotary reversing assembly, thereby connecting the rotary reversing cylinder to the air outlet of the blower assembly and the charging / discharging air port through the first flow channel; or, by rotating the rotary reversing assembly, the first flow channel air port is connected to the mounting base exhaust port, and the side opening of the second flow channel corresponds to the mounting base connection air port and the third flow channel respectively, thereby connecting the rotary reversing cylinder to the air outlet of the blower assembly and the mounting base exhaust port through the first flow channel, and connecting the mounting base connection air port and the third flow channel through the second flow channel.

[0015] Furthermore, the side wall of the outer cylinder is provided with a first limiting part at the position of the first flow channel air port; the first limiting part cooperates with the rear end of the valve core of the one-way valve, and is used to abut against the rear end of the valve core when the first flow channel air port is connected to the mounting base air port by the rotation of the rotary reversing assembly, so that the valve core is at the front end of the forward and backward movement stroke, thereby putting the one-way valve in the open charging and discharging port state; the side wall of the outer cylinder is also provided with a limiting groove, the bottom of the limiting groove forming a second limiting part; the second limiting part cooperates with the rear end of the valve core of the one-way valve, and is used to abut against the rear end of the valve core when the first flow channel air port is connected to the mounting base air port by the rotation of the rotary reversing assembly. When the limiting groove is connected to the air port of the mounting base, under the action of the return spring, the second limiting part abuts against the rear end of the valve core, so that the valve core is at the rear end of the forward and backward movement stroke, thereby making the one-way valve in the closed charging and discharging port state; the side wall of the outer cylinder is also provided with a third limiting part at the position of the second flow channel; the third limiting part cooperates with the rear end of the valve core of the one-way valve, so that when the second flow channel is connected to the air port of the mounting base by the rotation of the rotary reversing assembly, the third limiting part abuts against the rear end of the valve core, so that the valve core is at the front end of the forward and backward movement stroke, thereby making the one-way valve in the open charging and discharging port state.

[0016] Furthermore, the blower assembly includes a blower motor, an impeller, a motor mounting base, and an impeller cover; the blower motor is mounted on the top side of the motor mounting base, the impeller is located inside the impeller cover and fixedly connected to the rotating end of the blower motor, the impeller cover is fixedly mounted to the motor mounting base, and an airflow channel is formed inside it; the motor mounting base is fixedly connected to the bottom side of the outer cylinder, and the blower motor is located inside the inner cylinder; the bottom opening of the impeller cover forms an air inlet for the airflow channel, and the motor mounting base has an air outlet for the airflow channel that communicates with the first airflow channel.

[0017] Furthermore, a fourth flow channel is formed between the bottom side of the impeller cover and the bottom surface of the rotary mounting cavity; a baffle is also provided on the bottom side of the impeller cover; the baffle is used to open the channel between the fourth flow channel and the mounting base air inlet when the first flow channel air inlet is connected to the mounting base air inlet by the rotation of the rotary reversing assembly, or to close the channel between the fourth flow channel and the mounting base air inlet when the first flow channel air inlet is connected to the mounting base exhaust port.

[0018] Furthermore, a sealing ring is installed between the mounting base connecting air port and the air filling / discharging port of the mounting base.

[0019] Furthermore, a first mounting hole is provided on the top side of the mounting base; a micro switch is also installed on the top surface of the mounting base; a connecting cylinder is also provided on the top side of the rotary reversing cylinder; the top end of the connecting cylinder passes through the first mounting hole; a first trigger part and a second trigger part are distributed circumferentially on the side of the area of ​​the connecting cylinder extending out of the first mounting hole; the first trigger part and the second trigger part respectively cooperate with the trigger end of the micro switch, and are used to trigger the micro switch when the first flow channel air port is connected to the mounting base connecting air port by the rotation of the rotary reversing assembly, thereby energizing the blower assembly; or, when the first flow channel air port is connected to the mounting base exhaust port by the rotation of the rotary reversing assembly, the second trigger part triggers the micro switch, thereby energizing the blower assembly; the micro switch is also used to de-energize the blower assembly and prevent it from working when the trigger end is not in contact with the first trigger part and the second trigger part.

[0020] Furthermore, the knob includes a knob body; the bottom side of the knob body is provided with a connector that is fixedly installed with the connecting cylinder.

[0021] Furthermore, the pump housing also includes an upper cover disposed on the housing; the upper cover is provided with the air inlet and outlet; the upper cover is provided with a second mounting hole; the bottom side of the knob is also provided with a claw that cooperates with the second mounting hole, for rotatably mounting the knob to the upper cover; the top surface of the upper cover, located outside the second mounting hole, is also provided with three positioning grooves, and the bottom side of the knob body is provided with a positioning spring pin; the three positioning grooves cooperate with the positioning spring pin respectively, for positioning the rotation angle of the knob in the air pump's stopped state, air-filling state, and air-deflating state.

[0022] Advantages of the present invention: The rotary reversing air pump of the present invention for inflation and deflation can quickly switch the air path through the design of the rotary switching cylinder, thereby realizing the functions of inflation and deflation. The overall structure is simple and compact and easy to use. Attached Figure Description

[0023] Figure 1 A three-dimensional schematic diagram of a rotary reversing air pump for inflation and deflation, as an embodiment.

[0024] Figure 2 This is a front view schematic diagram of a rotary reversing air pump for inflation and deflation, as an embodiment.

[0025] Figure 3 A top view schematic diagram of a rotary reversing air pump for inflation and deflation, as an embodiment.

[0026] Figure 4 An explosion diagram of a rotary reversing air pump for inflation and deflation, as an embodiment.

[0027] Figure 5 An exploded view of the rotary reversing assembly and mounting base of a rotary reversing air pump for inflation and deflation, as shown in the embodiment.

[0028] Figure 6 This is a top view schematic diagram of a mounting base for a rotary reversing air pump used for inflation and deflation, as an embodiment.

[0029] Figure 7 for Figure 6 A cross-sectional view of CC;

[0030] Figure 8 An exploded schematic diagram of the rotary reversing assembly of a rotary reversing air pump for inflation and deflation, as an embodiment.

[0031] Figure 9 A perspective view of the rotary reversing cylinder of a rotary reversing air pump for inflation and deflation, as an embodiment.

[0032] Figure 10 This is a perspective view of the rotary reversing cylinder of a rotary reversing air pump for inflation and deflation, as an embodiment, from another angle.

[0033] Figure 11 A perspective view of the knob of a rotary reversing air pump for inflation and deflation, as an embodiment.

[0034] Figure 12 This is a three-dimensional schematic diagram of a partial structure of a check valve in a rotary reversing air pump for inflation and deflation, as an embodiment.

[0035] Figure 13 for Figure 2 A cross-sectional view of AA;

[0036] Figure 14 When inflated Figure 2 A cross-sectional view of AA;

[0037] Figure 15 When in the deflated state Figure 2 A cross-sectional view of AA;

[0038] Figure 16 When in the deflated state Figure 3 A cross-sectional view of BB;

[0039] Among them, 1-pump housing, 2-one-way valve, 3-rotary reversing assembly, 4-mounting base, 5-micro switch, 11-housing, 12-top cover, 13-charge / discharge port, 14-inlet / exhaust port, 15-air mask, 16-inlet / exhaust flow channel, 121-second mounting hole, 122-positioning groove, 21-valve seat, 22-valve core, 23-valve plate, 24-reset spring, 25-sealing gasket, 31-rotary reversing cylinder, 32-blower assembly, 33-knob, 311-outer cylinder, 312-inner cylinder, 313-partition, 314-first flow channel, 315-second flow channel, 316-first flow channel air port, 317-connecting cylinder, 318-first trigger part, 319-second trigger part 3111-First limiting part, 3112-Second limiting part, 3113-Third limiting part, 321-Blower motor, 322-Impeller, 323-Motor mounting base, 324-Impeller cover, 325-Blower flow channel, 326-Fourth flow channel, 3231-Blower flow channel outlet, 3241-Blower flow channel inlet, 3242-Baffle, 331-Knob body, 332-Connector, 333-Claw, 334-Positioning spring pin, 41-Lower mounting base, 42-Upper mounting base, 43-Rotating mounting cavity, 44-First mounting hole, 45-Third flow channel, 46-Mounting base exhaust port, 47-Mounting base inlet, 48-Mounting base connecting air port, 49-Sealing ring. Detailed Implementation

[0040] To enhance understanding of the present invention, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. These embodiments are only used to explain the invention and do not limit the scope of protection of the invention.

[0041] Example

[0042] Please refer to Figures 1 to 16 As shown, this embodiment provides a rotary reversing air pump for inflation and deflation, comprising:

[0043] Pump housing 1 includes housing 11, housing 11 has an inner cavity, pump housing 1 has an inflation / deflation port 13 on the front side for docking with the inflation product, and pump housing 1 has an air inlet / exhaust port 14 on the top side for communicating with the external environment.

[0044] One-way valve 2 is installed at the inflation / deflation port 13 and is used to control the opening and closing of the inflation / deflation port 13;

[0045] A rotary reversing assembly 3 and a mounting base 4 are installed in the inner cavity of the housing 11. The rotary reversing assembly 3 includes a rotary reversing cylinder 31, a blower assembly 32 fixed to the bottom side of the rotary reversing cylinder 31, and a knob 33 fixed to the top side of the rotary reversing cylinder 31. The mounting base 4 is provided with a rotary mounting cavity 43, and the rotary reversing assembly 3 is installed in the rotary mounting cavity 43 and has a degree of freedom of rotation. The front side of the mounting base 4 is provided with a mounting base connecting air port 48 that connects with the air inlet 13. A third flow channel 45 is also formed between the mounting base 4 and the rotary reversing assembly 3. The rear side of the mounting base 4 is provided with a mounting base exhaust port 46 at a position corresponding to the rotary reversing cylinder 31 and a mounting base air inlet 47 at a position corresponding to the blower assembly 32. An air inlet and exhaust flow channel 16 is formed between the rear side of the mounting base 4 and the housing 11, and the air inlet and exhaust flow channel 16 communicates with the air inlet and exhaust port 14.

[0046] When in the inflation state, the air inlet end of the blower assembly 32 is connected to the air inlet 47 of the mounting base, and then connected to the air inlet and outlet channels 16 and the air inlet and outlet ports 14. The air outlet end of the blower assembly 32 is connected to the air inlet 48 of the mounting base through the rotating reversing cylinder 31, and then connected to the inflation and deflation port 13.

[0047] In the venting state, the air inlet of the blower assembly 32 is connected to the third flow channel 45, the third flow channel 45 is connected to the mounting base connecting air port 48 through the rotating reversing cylinder 31, and then connected to the charging / discharging air port 13. The air outlet of the blower assembly 32 is connected to the mounting base exhaust port 46 through the rotating reversing cylinder 31, and then connected to the inlet / exhaust flow channel 16 and the inlet / exhaust port 14.

[0048] Refer to Figure 4 and Figure 12 As shown, the one-way valve 2 includes a valve seat 21 and a valve core 22 disposed within the charging / discharging port 13; the rear end of the valve core 22 passes through the valve seat 21, and a valve plate 23 is mounted on the front end of the valve core 22; the valve core 22 has the freedom to move back and forth relative to the valve seat 21; the valve plate 23 is used to open the charging / discharging port 13 under the forward movement of the valve core 22, or to close the charging / discharging port 14 under the backward movement of the valve core 22; an air mask 15 is also installed on the outside of the charging / discharging port 13 of the pump housing 1; a return spring 24 is also provided between the valve plate 23 and the air mask 15 to provide a force for the valve core 22 to move backward; a sealing gasket 25 that cooperates with the charging / discharging port 13 is also provided on the rear side of the valve plate 23.

[0049] Refer to Figure 9 and Figure 10As shown, the rotary reversing cylinder 31 includes an outer cylinder 311 and an inner cylinder 312; a spirally extending partition 313 is provided between the outer cylinder 311 and the inner cylinder 312 to divide the area between the outer cylinder 311 and the inner cylinder 312 into a first flow channel 314 and a second flow channel 315; a first flow channel air port 316 is opened on the side wall of the outer cylinder 311 near the top of the first flow channel 314; the bottom side of the first flow channel 314 is connected to the air outlet of the blower assembly 32; the second flow channel 315 has a side opening; the rotary reversing cylinder 31 is used to connect the first flow channel air port 316 with the mounting base connecting air port 48 by rotating the rotary reversing assembly 3, thereby connecting the rotary reversing cylinder 31 to the air outlet of the blower assembly 32 and the charging / discharging air port 13 (e.g., through the first flow channel 314) via the first flow channel 314. Figure 14 (as shown); or, by rotating the rotary reversing assembly 3, the first flow channel air port 316 is aligned with the mounting base exhaust port 46, and the side openings of the second flow channel 315 correspond to the mounting base connecting air port 48 and the third flow channel 45 respectively, thereby allowing the rotary reversing cylinder 31 to connect the air outlet of the blower assembly 32 and the mounting base exhaust port 46 through the first flow channel 314, and to connect the mounting base connecting air port 48 and the third flow channel 45 through the second flow channel 315 (as shown). Figure 15 and Figure 16 (As shown).

[0050] Refer to Figure 9 and Figure 10 As shown, the side wall of the outer cylinder 311 is also provided with a first limiting part 3111 at the position of the first flow channel air port 316; the first limiting part 3111 cooperates with the rear end of the valve core 22 of the one-way valve 2, and is used to abut against the rear end of the valve core 22 when the first flow channel air port 316 is connected to the mounting base connecting air port 48 by the rotation of the rotary reversing assembly 3, so that the valve core 22 is at the front end of the forward and backward movement stroke, thereby making the one-way valve 2 in the state of opening the charging and discharging air port 13 (as shown). Figure 14 (As shown); the side wall of the outer cylinder 311 is also provided with a limiting groove, and the bottom of the limiting groove forms a second limiting part 3112; the second limiting part 3112 cooperates with the rear end of the valve core 22 of the one-way valve 2, and is used to, when the limiting groove is connected to the mounting seat air port 48 by the rotation of the rotary reversing assembly 3, under the action of the return spring 24, the second limiting part 3112 abuts against the rear end of the valve core 22, so that the valve core 22 is at the rear end of the forward and backward movement stroke, thereby making the one-way valve 2 in the state of closing the charging and discharging port 13 (as shown); Figure 13(As shown); the side wall of the outer cylinder 311 is also provided with a third limiting part 3113 at the position of the second flow channel 315; the third limiting part 3113 cooperates with the rear end of the valve core 22 of the one-way valve 2, and is used to abut against the rear end of the valve core 22 when the second flow channel 314 is connected to the mounting base air port 48 by the rotation of the rotary reversing assembly 3, so that the valve core 22 is at the front end of the forward and backward movement stroke, thereby making the one-way valve 2 in the state of opening the charging and discharging air port 13 (as shown); Figure 15 (As shown).

[0051] Refer to Figure 8 As shown, the blower assembly 32 includes a blower motor 321, an impeller 322, a motor mounting base 323, and an impeller cover 324. The blower motor 321 is mounted on the top side of the motor mounting base 323. The impeller 322 is located inside the impeller cover 324 and is fixedly connected to the rotating end of the blower motor 321. The impeller cover 324 is fixedly mounted to the motor mounting base 323, and an airflow channel 325 is formed inside it. The motor mounting base 323 is fixedly connected to the bottom side of the outer cylinder 311, and the blower motor 321 is located inside the inner cylinder 312. The bottom opening of the impeller cover 324 forms an airflow channel inlet 3241, and the motor mounting base 323 has an airflow channel outlet 3231 that communicates with the first flow channel 314.

[0052] Refer to Figure 8 and Figure 13 As shown, a fourth flow channel 326 is formed between the bottom side of the impeller cover 324 and the bottom surface of the rotary mounting cavity 43; a baffle 3242 is also provided on the bottom side of the impeller cover 324; the baffle 3242 is used to open the channel between the fourth flow channel 326 and the mounting base air inlet 47 when the first flow channel air inlet 316 is connected to the mounting base connecting air inlet 48 by the rotation of the rotary reversing assembly 3 (e.g., Figure 14 (as shown), or, when the first flow channel air port 316 is connected to the mounting base exhaust port 46, the passage between the fourth flow channel 326 and the mounting base air inlet 47 is closed (as shown). Figure 15 and Figure 16 (As shown).

[0053] Refer to Figure 5 As shown, a sealing ring 49 is installed between the mounting base 4's mounting port 48 and the charging / discharging port 13. In this embodiment, the mounting base 4 includes a lower mounting base 41 and an upper mounting base 42; the mounting base 4 is set in a split form to facilitate the installation of the rotating reversing cylinder 31 and the blower assembly 32 inside the mounting base 4.

[0054] Refer to Figure 7 and Figure 10As shown, a first mounting hole 44 is provided on the top side of the mounting base 4; a micro switch 5 is also mounted on the top surface of the mounting base 4; a connecting cylinder 317 is also provided on the top side of the rotary reversing cylinder 31; the top end of the connecting cylinder 317 passes through the first mounting hole 44; a first trigger part 318 and a second trigger part 319 are distributed circumferentially on the side of the area of ​​the connecting cylinder 317 extending out of the first mounting hole 44; the first trigger part 318 and the second trigger part 319 respectively cooperate with the trigger end of the micro switch 5, and are used to control the rotation of the rotary reversing assembly 3 to move the micro switch 5 through the first flow channel air port 316. When the air inlet 48 of the mounting base is connected, the first trigger part 318 triggers the micro switch 5, thereby energizing the blower assembly 32 and putting the air pump in an inflating state. Alternatively, by rotating the reversing assembly 3, when the first flow channel air inlet 316 is connected to the exhaust port 46 of the mounting base, the second trigger part 319 triggers the micro switch 5, thereby energizing the blower assembly 32 and putting the air pump in a deflation state. The micro switch 5 is also used to de-energize the blower assembly 32 and put it in a closed state when the trigger end is not in contact with the first trigger part 318 and the second trigger part 319.

[0055] Refer to Figure 11 As shown, the knob 33 includes a knob body 331; the bottom side of the knob body 331 is provided with a connector 332 that is fixedly installed with the connecting cylinder 317.

[0056] Refer to Figure 4 and Figure 11 As shown, the pump housing 1 also includes an upper cover 12 disposed on the housing 1; the upper cover 12 is provided with the air inlet and outlet 14; the upper cover 12 is provided with a second mounting hole 121; the bottom side of the knob 33 is also provided with a claw 333 that cooperates with the second mounting hole 121, for rotatably mounting the knob 33 on the upper cover 12; the top surface of the upper cover 12 located outside the second mounting hole 121 is also provided with three positioning grooves 122, and the bottom side of the knob body 331 is provided with a positioning spring pin 334; the three positioning grooves 122 respectively cooperate with the positioning spring pin 334 to position the rotation angle of the knob 33 in the closed state, the charging state, and the deflating state of the air pump, thereby forming the closed position, the charging position, and the deflating position.

[0057] The rotary reversing air pump used for inflation and deflation in this embodiment is used as follows:

[0058] Connect the air pump to the air port of the inflatable product; rotate the knob to the closed position. At this time, under the action of the return spring, the valve core of the one-way valve rotates the second limit part of the reversing cylinder to abut against the rear end of the valve core of the one-way valve. The valve core maintains the rear end position of the forward and backward movement stroke, and the valve plate is in the closed inflation / deflation port state.

[0059] When inflating the product, rotate the knob to the inflation position. At this time, the rotary reversing cylinder rotates accordingly, so that the first flow channel air port is fully aligned with the mounting base connection air port, thereby making the first flow channel air port and the inflation / deflation port fully connected. The fourth flow channel is connected to the mounting base air inlet, and then the fourth flow channel is connected to the inlet / exhaust flow channel and the inlet / exhaust port. The valve core of the one-way valve abuts against the first limit part, and the valve core is at the front end of the forward and backward movement stroke, and the valve plate is in the state of opening the inflation / deflation port. The first trigger part triggers the micro switch, so that the blower motor is energized and works. Under the action of the impeller, air enters from the inlet / exhaust port into the inlet / exhaust flow channel, enters the blower flow channel through the fourth flow channel, and then enters the first flow channel, and enters the interior of the inflatable product through the first flow channel air port, the mounting base connection air port, and the inflation / deflation port.

[0060] After inflation is complete, rotate the knob to the off position. The micro switch will no longer be triggered, the blower motor will stop working, and the second limit part of the rotating reversing cylinder will abut against the rear end of the valve core of the one-way valve. Under the action of the return spring and the action of the air pressure difference inside and outside the valve plate, the valve core of the one-way valve will keep the valve plate in the closed inflation / deflation port state.

[0061] When deflation of the inflated product is required, rotate the knob to the deflation position. At this time, the rotary reversing cylinder rotates accordingly, aligning the second flow channel with the inflation / deflation port and connecting it to the third flow channel. The first flow channel is connected to the exhaust port of the mounting base through the first flow channel air port. The passage between the fourth flow channel and the air inlet of the mounting base is closed by the baffle. The rear end of the valve core of the one-way valve abuts against the third limiting part, so that the valve core is at the front end of the forward and backward movement stroke, and the valve plate is in the state of opening the inflation / deflation port. The second triggering part triggers the micro switch, which powers on the blower motor. Under the action of the impeller and the internal and external pressure difference, air enters the second flow channel from the inflation / deflation port through the mounting base connecting air port, then enters the blower flow channel through the third and fourth flow channels, then enters the first flow channel, and enters the inlet / exhaust flow channel through the first flow channel air port and the mounting base exhaust port, and is then discharged to the outside through the inlet / exhaust port.

[0062] The above embodiments should not limit the present invention in any way. All technical solutions obtained by equivalent substitution or equivalent conversion fall within the protection scope of the present invention.

Claims

1. A rotary reversing air pump for charging and discharging, characterized by: The air pump comprises: a pump shell comprising a shell body having an inner cavity, a front side of the pump shell being provided with a gas filling and discharging port for interfacing with a gas filling product, and a top side of the pump shell being provided with an air inlet and outlet port for communicating with an external environment; a one-way valve installed in the gas filling and discharging port for controlling opening and closing of the gas filling and discharging port; a rotary switching assembly and a mounting seat installed in the inner cavity of the shell body; the rotary switching assembly comprises a rotary switching cylinder, a blower assembly fixed to a bottom side of the rotary switching cylinder, and a rotary knob fixed to a top side of the rotary switching cylinder; the mounting seat is internally provided with a rotary mounting cavity, the rotary switching assembly is installed in the rotary mounting cavity and has a rotational degree of freedom; a front side of the mounting seat is provided with a mounting seat connecting gas port for interfacing with the gas filling and discharging port; a third flow channel is further formed between the mounting seat and the rotary switching assembly; a rear side of the mounting seat is provided with a mounting seat air outlet port at a position corresponding to the rotary switching cylinder and a mounting seat air inlet port at a position corresponding to the blower assembly; an air inlet and outlet flow channel is formed between the rear side of the mounting seat and the shell body, and the air inlet and outlet flow channel communicates with the air inlet and outlet port; in a gas filling state, an air inlet end of the blower assembly communicates with the mounting seat air inlet port, and further communicates with the air inlet and outlet flow channel and the air inlet and outlet port, an air outlet end of the blower assembly communicates with the mounting seat connecting gas port through the rotary switching cylinder, and further communicates with the gas filling and discharging port; in a gas discharging state, the air inlet end of the blower assembly communicates with the third flow channel, the third flow channel communicates with the mounting seat connecting gas port through the rotary switching cylinder, and further communicates with the gas filling and discharging port, the air outlet end of the blower assembly communicates with the mounting seat air outlet port through the rotary switching cylinder, and further communicates with the air inlet and outlet flow channel and the air inlet and outlet port.

2. A rotary reversing air pump for charging and discharging according to claim 1, characterized in that: the one-way valve comprises a valve seat and a valve core installed in the gas filling and discharging port; a rear end of the valve core penetrates through the valve seat, and a front end of the valve core is installed with a valve plate; the valve core has a degree of freedom of moving forward and backward relative to the valve seat; the valve plate is used to open the gas filling and discharging port under the forward driving of the valve core, or to close the gas filling and discharging port under the backward driving of the valve core; the pump shell is further installed with a gas port cover outside the gas filling and discharging port; a return spring is further arranged between the valve plate and the gas port cover for providing a backward driving force for the valve core; a rear side of the valve plate is further provided with a sealing gasket matched with the gas filling and discharging port.

3. A rotary reversing air pump for charging and discharging, according to claim 2, characterized in that: the rotary switching cylinder comprises an outer cylinder and an inner cylinder; a partition plate extending in a spiral manner is arranged between the outer cylinder and the inner cylinder to separate an area between the outer cylinder and the inner cylinder into a first flow channel and a second flow channel; a first flow channel gas port is opened on a side wall of the outer cylinder at a position close to a top end of the first flow channel; a bottom side of the first flow channel communicates with an air outlet end of the blower assembly; a side surface of the second flow channel is open; the rotary switching cylinder is used to make the first flow channel gas port interface with the mounting seat connecting gas port through rotation of the rotary switching assembly, and further make the rotary switching cylinder connect the air outlet end of the blower assembly and the gas filling and discharging port through the first flow channel; or, the rotary switching cylinder is used to make the first flow channel gas port interface with the mounting seat air outlet port through rotation of the rotary switching assembly, the side surface opening of the second flow channel corresponds to the mounting seat connecting gas port and the third flow channel respectively, and further make the rotary switching cylinder connect the air outlet end of the blower assembly and the mounting seat air outlet port through the first flow channel, and connect the mounting seat connecting gas port and the third flow channel through the second flow channel.

4. A rotary reversing air pump for charging and discharging according to claim 3, characterized in that: The side wall of the outer cylinder is further provided with a first limiting part at the position of the first flow channel air port; the first limiting part cooperates with the rear end of the valve core of the one-way valve, and is used for cooperating with the rotation of the rotation switching assembly, so that when the first flow channel air port is connected with the mounting seat connecting air port, the first limiting part abuts against the rear end of the valve core, the valve core is at the front end of the front and rear movement stroke, and the one-way valve is in the state of opening the charging and discharging air port; the side wall of the outer cylinder is further provided with a limiting groove, and the groove bottom of the limiting groove forms a second limiting part; the second limiting part cooperates with the rear end of the valve core of the one-way valve, and is used for cooperating with the rotation of the rotation switching assembly, so that when the limiting groove is connected with the mounting seat connecting air port, under the action of the reset spring, the second limiting part abuts against the rear end of the valve core, the valve core is at the rear end of the front and rear movement stroke, and the one-way valve is in the state of closing the charging and discharging air port; the side wall of the outer cylinder is further provided with a third limiting part at the position of the second flow channel; the third limiting part cooperates with the rear end of the valve core of the one-way valve, and is used for cooperating with the rotation of the rotation switching assembly, so that when the second flow channel is connected with the mounting seat connecting air port, the third limiting part abuts against the rear end of the valve core, the valve core is at the front end of the front and rear movement stroke, and the one-way valve is in the state of opening the charging and discharging air port.

5. A rotary reversing air pump for charging and discharging according to claim 3, characterized in that: The air blowing assembly comprises an air blowing motor, an impeller, a motor mounting seat and an impeller cover; the air blowing motor is mounted on the top side of the motor mounting seat, the impeller is located in the impeller cover and is fixedly connected with the rotating end of the air blowing motor, the impeller cover and the motor mounting seat are fixedly mounted, and an air blowing flow channel is formed in the impeller cover; the motor mounting seat is fixedly connected with the bottom side of the outer cylinder, and the air blowing motor is located in the inner cylinder; the bottom side of the impeller cover is provided with an air blowing flow channel air inlet formed by an opening, and the motor mounting seat is provided with an air blowing flow channel air outlet which is communicated with the first flow channel.

6. A rotary reversing air pump for charging and discharging according to claim 5, characterized in that: The bottom side of the impeller cover and the bottom surface of the rotary mounting cavity form a fourth flow channel; the bottom side of the impeller cover is further provided with a baffle; the baffle is used for cooperating with the rotation of the rotation switching assembly, so that when the first flow channel air port is connected with the mounting seat connecting air port, the baffle opens the channel between the fourth flow channel and the mounting seat air inlet, or when the first flow channel air port is connected with the mounting seat air outlet, the baffle closes the channel between the fourth flow channel and the mounting seat air inlet.

7. A rotary reversing air pump for charging and discharging according to claim 1, characterized in that: A sealing ring is mounted between the mounting seat connecting air port and the charging and discharging air port of the mounting seat.

8. A rotary reversing gas pump for charging and discharging according to any one of claims 3-6, characterized in that: A first mounting hole is formed in the top side of the mounting seat; a micro switch is further mounted on the top surface of the mounting seat; a connecting cylinder is further provided on the top side of the rotation switching cylinder; the top end of the connecting cylinder passes through the first mounting hole; the side surface of the area of the connecting cylinder which extends out of the first mounting hole is circumferentially provided with a first trigger part and a second trigger part; the first trigger part and the second trigger part are respectively matched with the trigger end of the micro switch, and are used for cooperating with the rotation of the rotation switching assembly, so that when the first flow channel air port is connected with the mounting seat connecting air port, the first trigger part triggers the micro switch, and the air blowing assembly is powered on, or when the first flow channel air port is connected with the mounting seat air outlet, the second trigger part triggers the micro switch, and the air blowing assembly is powered on; the micro switch is further used for making the air blowing assembly be powered off when the trigger end is not in contact with the first trigger part and the second trigger part.

9. A rotary reversing air pump for charging and discharging according to claim 8, characterized in that: The knob comprises a knob body; a connecting head is fixedly installed on the bottom side of the knob body.

10. A rotary reversing air pump for charging and discharging according to claim 9, characterized in that: The pump shell further comprises an upper cover arranged on the shell; the upper cover is provided with the air inlet and outlet; the upper cover is provided with a second mounting hole; the bottom side of the knob is further provided with a clamping jaw matched with the second mounting hole, so that the knob is rotatably installed on the upper cover; the top surface of the upper cover is further provided with three positioning grooves outside the second mounting hole; the bottom side of the knob body is provided with a positioning spring pin; the three positioning grooves are matched with the positioning spring pin, so that the rotation angle of the knob is positioned in the stop state, the inflation state and the deflation state of the air pump.

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