Rotary reversing air pump for inflating and deflating

Abstract

The invention relates to a rotary reversing air pump for inflation and deflation, comprising: a pump shell comprising a shell with an inner cavity, the front side of the pump shell being provided with an inflation / deflation port, and the top side of the pump shell being provided with an air inlet / outlet; the one-way valve is mounted at the inflation and deflation port and used for controlling opening and closing of the inflation and deflation port; the rotary reversing assembly comprises a rotary reversing cylinder, an air blowing assembly and a rotary knob; a rotary mounting cavity is formed in the mounting base, and the rotary reversing assembly is mounted in the rotary mounting cavity; the front side of the mounting seat is provided with a mounting seat connecting air port; a third runner is further formed between the mounting base and the rotary reversing assembly, a mounting base exhaust port is formed in the position, corresponding to the rotary reversing cylinder, of the rear side of the mounting base, and a mounting base air inlet is formed in the position, corresponding to the air blowing assembly, of the rear side of the mounting base; and an air inlet and outlet runner is formed between the rear side of the mounting seat and the shell and is communicated with the air inlet and outlet port. By means of the design of the rotary switching cylinder, air paths can be rapidly switched, then the inflation and deflation functions are achieved, the overall structure is simple and compact, and use is convenient.

Description

Technical Field

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

[0002] Inflatable products are increasingly widely used, such as inflatable beds, inflatable pools, inflatable pads, etc. These inflatable products need to be inflated for use and deflated for folding and storage. For the inflation of inflatable products, currently, manual air pumps are generally used for inflation, or electric inflatable pumps are used for inflation. The inflation process is generally carried out by docking the air pump with the air nozzle of the inflatable product. For the deflation of inflatable products, generally, the air nozzle of the inflatable product is opened to allow the inflatable product to deflate naturally.

[0003] Existing air pumps can also have the functions of inflation and suction at the same time. They control the switching between inflation and deflation by pressing or rotating the corresponding control knob with fingers to control the corresponding mechanical structure changes, but the structure is relatively complex and not very convenient to use.

[0004] With the continuous upgrading of air pump products, how to design a convenient-to-use air pump with both inflation and deflation functions has become an urgent problem to be solved at present. Summary of the Invention

[0005] To solve the above 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 it is convenient to use.

[0006] The technical solution adopted by the present invention to solve its technical problems is:

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

[0008] A pump housing, including a housing having an inner cavity. An inflation and deflation port for docking with an inflatable product is provided on the front side of the pump housing, and an intake and exhaust port communicating with the external environment is provided on the top side of the pump housing;

[0009] A one-way valve installed at the inflation and deflation port for controlling the opening and closing of the inflation and deflation port;

[0010] The rotation and direction-changing assembly and the mounting base are installed in the inner cavity of the housing; the rotation and direction-changing assembly includes a rotation and direction-changing cylinder, a blower assembly fixed to the bottom side of the rotation and direction-changing cylinder, and a knob fixed to the top side of the rotation and direction-changing cylinder; a rotation mounting cavity is provided in the mounting base, and the rotation and direction-changing assembly is installed in the rotation mounting cavity and has the freedom of rotation; a mounting base connecting air port for docking with the charging and discharging port is provided on the front side of the mounting base; a third flow channel is also formed between the mounting base and the rotation and direction-changing assembly; a mounting base exhaust port is provided at the position corresponding to the rotation and direction-changing cylinder on the rear side of the mounting base, and a mounting base air inlet is provided at the position corresponding to the blower assembly; an air intake and exhaust flow channel is formed between the rear side of the mounting base and the housing, and the air intake and exhaust flow channel is communicated with the air intake and exhaust port;

[0011] In the inflation state, the air inlet end of the blower assembly is communicated with the mounting base air inlet, and then with the air intake and exhaust flow channel and the air intake and exhaust port. The air outlet end of the blower assembly is communicated with the mounting base connecting air port through the rotation and direction-changing cylinder, and then with the charging and discharging port;

[0012] In the deflation state, the air inlet end of the blower assembly is communicated with the third flow channel. The third flow channel is communicated with the mounting base connecting air port through the rotation and direction-changing cylinder, and then with the charging and discharging port. The air outlet end of the blower assembly is communicated with the mounting base exhaust port through the rotation and direction-changing cylinder, and then with the air intake and exhaust flow channel and the air intake and exhaust port.

[0013] Further, the one-way valve includes a valve seat and a valve core arranged in the charging and discharging port; the rear end of the valve core passes through the valve seat, and a valve plate is installed at the front end of the valve core; the valve core has the freedom of moving forward and backward relative to the valve seat; the valve plate is used to open the charging and discharging port when driven forward by the valve core, or close the charging and discharging port when driven backward by the valve core; an air mask is also installed on the outside of the charging and discharging port of the pump housing; a return spring is also arranged between the valve plate and the air mask to provide a force for the backward movement of the valve core; a sealing gasket for cooperating with the charging and discharging port is also arranged on the rear side of the valve plate.

[0014] Further, the rotary reversing cylinder includes an outer cylinder and an inner cylinder; a partition extending in a spiral shape 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 at a position close to the top end of the first flow channel; the bottom side of the first flow channel is communicated with the air outlet end of the air blowing assembly; the side surface of the second flow channel is open; the rotary reversing cylinder is used to rotate through the rotary reversing assembly to dock the first flow channel air port with the connection air port of the mounting seat, so that the rotary reversing cylinder communicates the air outlet end of the air blowing assembly and the air charging / discharging port through the first flow channel; or, through the rotation of the rotary reversing assembly, the first flow channel air port is docked with the exhaust port of the mounting seat, and the side surface openings of the second flow channel correspond to the connection air port of the mounting seat and the third flow channel respectively, so that the rotary reversing cylinder communicates the air outlet end of the air blowing assembly and the exhaust port of the mounting seat through the first flow channel, and communicates the connection air port of the mounting seat and the third flow channel through the second flow channel.

[0015] Further, a first limiting portion is further provided on the side wall of the outer cylinder at the position of the first flow channel air port; the first limiting portion cooperates with the rear end of the valve core of the one-way valve, and is used to rotate through the rotary reversing assembly. When the first flow channel air port is docked with the connection air port of the mounting seat, the first limiting portion abuts against the rear end of the valve core, so that the valve core is at the front end of the front-back movement stroke, and further the one-way valve is in a state of opening the air charging / discharging port; a limiting groove is further provided on the side wall of the outer cylinder, and the bottom of the limiting groove forms a second limiting portion; the second limiting portion cooperates with the rear end of the valve core of the one-way valve, and is used to rotate through the rotary reversing assembly. When the limiting groove is docked with the connection air port of the mounting seat, under the action of the return spring, the second limiting portion abuts against the rear end of the valve core, so that the valve core is at the rear end of the front-back movement stroke, and further the one-way valve is in a state of closing the air charging / discharging port; a third limiting portion is further provided on the side wall of the outer cylinder at the position of the second flow channel; the third limiting portion cooperates with the rear end of the valve core of the one-way valve, and is used to rotate through the rotary reversing assembly. When the second flow channel is docked with the connection air port of the mounting seat, the third limiting portion abuts against the rear end of the valve core, so that the valve core is at the front end of the front-back movement stroke, and further the one-way valve is in a state of opening the air charging / discharging port.

[0016] Further, the air blowing assembly includes an air blowing motor, an impeller, a motor mounting seat, and an impeller cover; the air blowing motor is installed on the top side of the motor mounting seat, the impeller is located inside the impeller cover and is fixedly connected to the rotating end of the air blowing motor, the impeller cover is fixedly installed with the motor mounting seat, and an air blowing flow channel is formed inside; the motor mounting seat is fixedly connected to the bottom side of the outer cylinder, and the air blowing motor is located inside the inner cylinder; the bottom side of the impeller cover is open to form an air blowing flow channel air inlet, and the motor mounting seat has an air blowing flow channel air outlet communicated with the first flow channel.

[0017] Further, 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 further provided on the bottom side of the impeller cover; the baffle is used to open the channel between the fourth flow channel and the intake port of the mounting seat when the air port of the first flow channel is docked with the connecting air port of the mounting seat through the rotation of the rotary switching assembly, or to close the channel between the fourth flow channel and the intake port of the mounting seat when the air port of the first flow channel is docked with the exhaust port of the mounting seat.

[0018] Further, a sealing ring is installed between the connecting air port of the mounting seat and the air charging and discharging port.

[0019] Further, a first mounting hole is formed in the top side of the mounting seat; a micro switch is further installed on the top surface of the mounting seat; a connecting cylinder is further provided on the top side of the rotary switching cylinder; the top end of the connecting cylinder passes through the first mounting hole; a first triggering portion and a second triggering portion are circumferentially distributed on the side surface of the area where the connecting cylinder extends out of the first mounting hole; the first triggering portion and the second triggering portion respectively cooperate with the triggering ends of the micro switch, and are used to trigger the micro switch by the first triggering portion through the rotation of the rotary switching assembly when the air port of the first flow channel is docked with the connecting air port of the mounting seat, so that the air blowing assembly is powered on to work, or to trigger the micro switch by the second triggering portion through the rotation of the rotary switching assembly when the air port of the first flow channel is docked with the exhaust port of the mounting seat, so that the air blowing assembly is powered on to work; the micro switch is further used to cut off the power supply of the air blowing assembly when the triggering end is not in contact with the first triggering portion and the second triggering portion.

[0020] Further, the knob includes a knob body; a connecting head fixedly installed with the connecting cylinder is provided on the bottom side of the knob body.

[0021] Further, the pump housing further includes an upper cover provided on the housing; the upper cover is provided with the air inlet and outlet; a second mounting hole is provided on the upper cover; a claw cooperating with the second mounting hole is further provided on the bottom side of the knob for rotatably mounting the knob on the upper cover; three positioning grooves are further provided on the top surface of the upper cover outside the second mounting hole; a positioning spring pin is provided on the bottom side of the knob body; the three positioning grooves respectively cooperate with the positioning spring pin for positioning the rotation angle of the knob in the stop state, inflation state, and deflation state of the air pump.

[0022] Advantages of the present invention: A rotary reversing air pump for inflation and deflation according to the present invention 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 it is convenient to use. Description of the Drawings

[0023] Figure 1 A three-dimensional schematic diagram of a rotary reversing air pump for inflation and deflation in the embodiment;

[0024] Figure 2 Front view schematic diagram of a rotary reversing air pump for inflation and deflation in the embodiment;

[0025] Figure 3 Top view schematic diagram of a rotary reversing air pump for inflation and deflation in the embodiment;

[0026] Figure 4 Explosion schematic diagram of a rotary reversing air pump for inflation and deflation in the embodiment;

[0027] Figure 5 Explosion schematic diagram of the rotary reversing component and the mounting seat assembly of a rotary reversing air pump for inflation and deflation in the embodiment;

[0028] Figure 6 Top view schematic diagram of the mounting seat of a rotary reversing air pump for inflation and deflation in the embodiment;

[0029] Figure 7 For Figure 6 C-C cross-sectional schematic diagram;

[0030] Figure 8 Explosion schematic diagram of the rotary reversing component of a rotary reversing air pump for inflation and deflation in the embodiment;

[0031] Figure 9 Three-dimensional schematic diagram of the rotary reversing cylinder of a rotary reversing air pump for inflation and deflation in the embodiment;

[0032] Figure 10 Three-dimensional schematic diagram of the rotary reversing cylinder of a rotary reversing air pump for inflation and deflation in the embodiment from another angle;

[0033] Figure 11 Three-dimensional schematic diagram of the knob of a rotary reversing air pump for inflation and deflation in the embodiment;

[0034] Figure 12 Three-dimensional schematic diagram of a partial structure of the check valve of a rotary reversing air pump for inflation and deflation in the embodiment;

[0035] Figure 13 For Figure 2 A-A cross-sectional schematic diagram;

[0036] Figure 14 When in the inflation state Figure 2 A-A cross-sectional schematic diagram;

[0037] Figure 15 When in the deflation state Figure 2 A-A cross-sectional schematic diagram;

[0038] Figure 16 When in the deflation state Figure 3 Schematic cross-sectional view taken along line B-B;

[0039] Among them, 1 - pump housing, 2 - check valve, 3 - rotary reversing assembly, 4 - mounting base, 5 - microswitch, 11 - housing, 12 - upper cover, 13 - inflation / deflation port, 14 - air inlet / outlet port, 15 - air mask, 16 - air inlet / outlet channel, 121 - second mounting hole, 122 - positioning groove, 21 - valve seat, 22 - valve core, 23 - valve plate, 24 - return spring, 25 - gasket, 31 - rotary reversing cylinder, 32 - air blowing assembly, 33 - knob, 311 - outer cylinder, 312 - inner cylinder, 313 - partition, 314 - first channel, 315 - second channel, 316 - first 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 - air blowing motor, 322 - impeller, 323 - motor mounting base, 324 - impeller cover, 325 - air blowing channel, 326 - fourth channel, 3231 - air blowing channel air outlet, 3241 - air blowing channel air inlet, 3242 - baffle, 331 - knob body, 332 - connecting head, 333 - claw, 334 - positioning spring pin, 41 - lower mounting base, 42 - upper mounting base, 43 - rotary mounting cavity, 44 - first mounting hole, 45 - third channel, 46 - mounting base air outlet, 47 - mounting base air inlet, 48 - mounting base connecting air port, 49 - sealing ring. Detailed implementation mode

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

[0041] Embodiment

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

[0043] The pump housing 1 includes a housing 11 with an inner cavity. An inflation / deflation port 13 for docking with an inflatable product is provided on the front side of the pump housing 1, and an air inlet / outlet port 14 communicating with the external environment is provided on the top side of the pump housing 1;

[0044] The check 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] The rotation and direction-changing assembly 3 and the mounting base 4 are installed in the inner cavity of the housing 11; the rotation and direction-changing assembly 3 includes a rotation and direction-changing cylinder 31, a blower assembly 32 fixed to the bottom side of the rotation and direction-changing cylinder 31, and a knob 33 fixed to the top side of the rotation and direction-changing cylinder 31; a rotation mounting cavity 43 is provided in the mounting base 4, and the rotation and direction-changing assembly 3 is installed in the rotation mounting cavity 43 and has the freedom of rotation; a mounting base connecting air port 48 for docking with the charging and discharging port 13 is provided on the front side of the mounting base 4; a third flow channel 45 is also formed between the mounting base 4 and the rotation and direction-changing assembly 3; a mounting base exhaust port 46 is provided at the position corresponding to the rotation and direction-changing cylinder 31 on the rear side of the mounting base 4, and a mounting base air inlet 47 is provided at the position corresponding to the blower assembly 32; an air intake and exhaust flow channel 16 is formed between the rear side of the mounting base 4 and the housing 11, and the air intake and exhaust flow channel 16 is communicated with the air intake and exhaust port 14;

[0046] In the inflation state, the air inlet end of the blower assembly 32 is communicated with the mounting base air inlet 47, and then communicated with the air intake and exhaust flow channel 16 and the air intake and exhaust port 14. The air outlet end of the blower assembly 32 is communicated with the mounting base connecting air port 48 through the rotation and direction-changing cylinder 31, and then communicated with the charging and discharging port 13;

[0047] In the deflation state, the air inlet end of the blower assembly 32 is communicated with the third flow channel 45. The third flow channel 45 is communicated with the mounting base connecting air port 48 through the rotation and direction-changing cylinder 31, and then communicated with the charging and discharging port 13. The air outlet end of the blower assembly 32 is communicated with the mounting base exhaust port 46 through the rotation and direction-changing cylinder 31, and then communicated with the air intake and exhaust flow channel 16 and the air intake and exhaust port 14.

[0048] Refer to again Figure 4 and Figure 12 As shown in, the one-way valve 2 includes a valve seat 21 and a valve core 22 arranged in the charging and discharging port 13; the rear end of the valve core 22 passes through the valve seat 21, and a valve plate 23 is installed at the front end of the valve core 22; the valve core 22 has the freedom of moving back and forth relative to the valve seat 21; the valve plate 23 is used to open the charging and discharging port 13 when driven forward by the valve core 22, or close the charging and discharging port 14 when driven backward by the valve core 22; an air mask 15 is also installed on the outside of the charging and discharging port 13 of the pump housing 1; a return spring 24 is also arranged 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 matching with the charging and discharging port 13 is also arranged at the rear side of the valve plate 23.

[0049] Refer to again Figure 9 and Figure 10As shown, the rotary reversing cylinder 31 includes an outer cylinder 311 and an inner cylinder 312; a partition 313 extending in a spiral 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 at a position close to the top of the first flow channel 314; the bottom side of the first flow channel 314 is communicated with the air outlet end of the air blowing assembly 32; the side of the second flow channel 315 is open; the rotary reversing cylinder 31 is used to make the first flow channel air port 316 dock with the mounting seat connecting air port 48 through the rotation of the rotary reversing assembly 3, so that the rotary reversing cylinder 31 is communicated with the air outlet end of the air blowing assembly 32 and the charging and discharging port 13 through the first flow channel 314 (as Figure 14 shown); or, through the rotation of the rotary reversing assembly 3, the first flow channel air port 316 is docked with the mounting seat exhaust port 46, and the side openings of the second flow channel 315 correspond to the mounting seat connecting air port 48 and the third flow channel 45 respectively, so that the rotary reversing cylinder 31 is communicated with the air outlet end of the air blowing assembly 32 and the mounting seat exhaust port 46 through the first flow channel 314, and is communicated with the mounting seat connecting air port 48 and the third flow channel 45 through the second flow channel 315 (as Figure 15 and Figure 16 shown).

[0050] Referring again to Figure 9 and Figure 10 shown, a first limiting portion 3111 is further provided on the side wall of the outer cylinder 311 at the position of the first flow channel air port 316; the first limiting portion 3111 cooperates with the rear end of the valve core 22 of the one-way valve 2, and is used to make the first limiting portion 3111 abut against the rear end of the valve core 22 when the first flow channel air port 316 is docked with the mounting seat connecting air port 48 through the rotation of the rotary reversing assembly 3, so that the valve core 22 is at the front end of the front and rear moving stroke, and further makes the one-way valve 2 in a state of opening the charging and discharging port 13 (as Figure 14 shown); a limiting groove is further provided on the side wall of the outer cylinder 311, and the bottom of the limiting groove forms a second limiting portion 3112; the second limiting portion 3112 cooperates with the rear end of the valve core 22 of the one-way valve 2, and is used to make the second limiting portion 3112 abut against the rear end of the valve core 22 under the action of the return spring 24 when the limiting groove is docked with the mounting seat connecting air port 48 through the rotation of the rotary reversing assembly 3, so that the valve core 22 is at the rear end of the front and rear moving stroke, and further makes the one-way valve 2 in a state of closing the charging and discharging port 13 (as Figure 13As shown in the figure; a third limiting portion 3113 is further provided on the side wall of the outer cylinder 311 at the position of the second flow channel 315; the third limiting portion 3113 cooperates with the rear end of the valve core 22 of the one-way valve 2. When the second flow channel 314 is docked with the mounting seat connection port 48 through the rotation of the rotation conversion assembly 3, the third limiting portion 3113 abuts against the rear end of the valve core 22, so that the valve core 22 is at the front end of the front and rear movement stroke, and further the one-way valve 2 is in a state of opening the charging and discharging port 13 (as Figure 15 shown).

[0051] Referring again to Figure 8 shown, the air blowing assembly 32 includes an air blowing motor 321, an impeller 322, a motor mounting seat 323, and an impeller cover 324; the air blowing motor 321 is installed on the top side of the motor mounting seat 323, the impeller 322 is located inside the impeller cover 324 and is fixedly connected to the rotating end of the air blowing motor 321, the impeller cover 324 is fixedly installed with the motor mounting seat 323, and an air blowing flow channel 325 is formed inside; the motor mounting seat 323 is fixedly connected to the bottom side of the outer cylinder 311, and the air blowing motor 321 is located inside the inner cylinder 312; the bottom side of the impeller cover 324 is open to form an air blowing flow channel air inlet 3241, and the motor mounting seat 323 has an air blowing flow channel air outlet 3231 communicated with the first flow channel 314.

[0052] Referring again to Figure 8 and Figure 13 shown, a fourth flow channel 326 is formed between the bottom side of the impeller cover 324 and the bottom surface of the rotation mounting cavity 43; a baffle 3242 is further 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 seat air inlet 47 when the first flow channel air port 316 is docked with the mounting seat connection port 48 through the rotation of the rotation conversion assembly 3 (as Figure 14 shown), or close the channel between the fourth flow channel 326 and the mounting seat air inlet 47 when the first flow channel air port 316 is docked with the mounting seat exhaust port 46 (as Figure 15 and Figure 16 shown).

[0053] Referring again to Figure 5 shown, a sealing ring 49 is installed between the mounting seat connection port 48 of the mounting seat 4 and the charging and discharging port 13. In this embodiment, the mounting seat 4 includes a lower mounting seat 41 and an upper mounting seat 42; the mounting seat 4 is set in a split form, which is convenient for the rotation conversion cylinder 31 and the air blowing assembly 32 to be installed in the mounting seat 4.

[0054] Referring again to Figure 7 and Figure 10As shown, a first mounting hole 44 is formed in the top side of the mounting base 4; a micro switch 5 is further mounted on the top surface of the mounting base 4; a connecting cylinder 317 is further provided on the top side of the rotation and direction conversion cylinder 31; the top end of the connecting cylinder 317 passes through the first mounting hole 44; a first triggering portion 318 and a second triggering portion 319 are circumferentially distributed on the side surface of the area where the connecting cylinder 317 extends out of the first mounting hole 44; the first triggering portion 318 and the second triggering portion 319 are respectively matched with the triggering ends of the micro switch 5, and are used for, through the rotation of the rotation and direction conversion assembly 3, when the first flow channel air port 316 is butted with the mounting base connecting air port 48, the first triggering portion 318 triggers the micro switch 5, so that the air blowing assembly 32 is powered on to work, and the air pump is in an inflation state, or, through the rotation of the rotation and direction conversion assembly 3, when the first flow channel air port 316 is butted with the mounting base exhaust port 46, the second triggering portion 319 triggers the micro switch 5, so that the air blowing assembly 32 is powered on to work, and the air pump is in a deflation state; the micro switch 5 is further used for, when the triggering end is not in contact with the first triggering portion 318 and the second triggering portion 319, powering off the air blowing assembly 32 to stop working, and the air pump is in a closed state.

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

[0056] Referring again to Figure 4 and Figure 11 As shown, the pump housing 1 further includes an upper cover 12 arranged on the housing 1; the upper cover 12 is provided with the air inlet and outlet 14; a second mounting hole 121 is formed in the upper cover 12; a claw 333 matched with the second mounting hole 121 is further provided on the bottom side of the knob 33, and is used for rotatably mounting the knob 33 on the upper cover 12; three positioning grooves 122 are further provided on the top surface of the upper cover 12 outside the second mounting hole 121, and a positioning spring pin 334 is provided on the bottom side of the knob body 331; the three positioning grooves 122 are respectively matched with the positioning spring pin 334, and are used for positioning the rotation angle of the knob 33 in the closed state, inflation state, and deflation state of the air pump, so as to form a closed gear, an inflation gear, and a deflation gear.

[0057] The usage method of the rotary reversing air pump for inflation and deflation in this embodiment is as follows:

[0058] Connect the air pump to the air port of the inflatable product; rotate the knob to the closed gear. At this time, under the action of the return spring, the second limiting portion of the rotation and direction conversion cylinder abuts against the rear end of the valve core of the one-way valve, the valve core maintains the rear end position of the front and rear moving stroke, and the valve plate is in a state of closing the air charging and discharging port.

[0059] When it is necessary to inflate the inflatable product, rotate the knob to the inflation gear. At this time, the rotary reversing cylinder rotates accordingly, so that the first flow channel air port corresponds exactly to the mounting seat connection air port, and then the first flow channel air port and the air charging and discharging port are in a completely connected state. The fourth flow channel is connected to the mounting seat air inlet, and then the fourth flow channel is connected to the air inlet and exhaust flow channel and the air inlet and exhaust port; the valve core of the one-way valve abuts against the first limiting part, the valve core is at the front end position of the front and rear movement stroke, and the valve plate is in a state of opening the air charging and discharging port; the first triggering part triggers the micro switch, so that the blower motor is powered on and works. Under the action of the impeller, air enters the air inlet and exhaust flow channel from the air inlet and exhaust port, enters the air blowing flow channel through the fourth flow channel, then enters the first flow channel, and then enters the interior of the inflatable product through the first flow channel air port, the mounting seat connection air port, and the air charging and discharging port;

[0060] After inflation is completed, rotate the knob to the off gear. The micro switch is no longer triggered, and the blower motor stops working. The second limiting part of the rotary reversing cylinder abuts against the rear end of the valve core of the one-way valve. Under the action of the return spring of the one-way valve and the air pressure difference inside and outside, the valve plate is in a state of closing the air charging and discharging port;

[0061] When it is necessary to deflate the inflatable product, rotate the knob to the deflation gear. At this time, the rotary reversing cylinder rotates accordingly, so that the second flow channel corresponds to the air charging and discharging port and is connected to the third flow channel. The first flow channel is connected to the mounting seat exhaust port through the first flow channel air port; the channel between the fourth flow channel and the mounting seat air inlet is closed by a 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 position of the front and rear movement stroke, and the valve plate is in a state of opening the air charging and discharging port; the second triggering part triggers the micro switch, so that the blower motor is powered on and works. Under the action of the impeller and the internal and external pressure difference, air enters the second flow channel from the air charging and discharging port through the mounting seat connection air port, then enters the air blowing flow channel through the third flow channel and the fourth flow channel, then enters the first flow channel, and then enters the air inlet and exhaust flow channel through the first flow channel air port and the mounting seat exhaust port, and is then discharged to the outside through the air inlet and exhaust port.

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

Claims

1. A rotary reversing air pump for inflation and deflation, characterized in that: The air pump includes: A pump housing, including a housing body with an inner cavity. An air charging / discharging port for docking with an inflatable product is provided on the front side of the pump housing, and an air inlet / outlet port communicating with the external environment is provided on the top side of the pump housing; A one-way valve installed at the air charging / discharging port for controlling the opening and closing of the air charging / discharging port; A rotation conversion assembly and a mounting seat installed in the inner cavity of the housing body. The rotation conversion assembly includes a rotation conversion cylinder, a blowing assembly fixed to the bottom side of the rotation conversion cylinder, and a knob fixed to the top side of the rotation conversion cylinder. A rotation mounting cavity is provided inside the mounting seat, and the rotation conversion assembly is installed in the rotation mounting cavity and has a degree of freedom of rotation. A mounting seat connecting air port docking with the air charging / discharging port is provided on the front side of the mounting seat. A third flow channel is also formed between the mounting seat and the rotation conversion assembly. A mounting seat exhaust port is provided at the position corresponding to the rotation conversion cylinder on the rear side of the mounting seat, and a mounting seat air inlet is provided at the position corresponding to the blowing assembly. An air inlet / outlet flow channel is formed between the rear side of the mounting seat and the housing body, and the air inlet / outlet flow channel communicates with the air inlet / outlet port; In the inflation state, the air inlet end of the blowing assembly communicates with the mounting seat air inlet, and then communicates with the air inlet / outlet flow channel and the air inlet / outlet port. The air outlet end of the blowing assembly communicates with the mounting seat connecting air port through the rotation conversion cylinder, and then communicates with the air charging / discharging port; In the deflation state, the air inlet end of the blowing assembly communicates with the third flow channel. The third flow channel communicates with the mounting seat connecting air port through the rotation conversion cylinder, and then communicates with the air charging / discharging port. The air outlet end of the blowing assembly communicates with the mounting seat exhaust port through the rotation conversion cylinder, and then communicates with the air inlet / outlet flow channel and the air inlet / outlet port.

2. The rotary reversing air pump for inflation and deflation according to claim 1, characterized in that: The one-way valve includes a valve seat and a valve core arranged in the air charging / discharging port. The rear end of the valve core passes through the valve seat, and a valve plate is installed at the front end of the valve core. 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 air charging / discharging port under the forward drive of the valve core, or close the air charging / discharging port under the backward drive of the valve core. An air mask is also installed outside the air charging / discharging port of the pump housing. A return spring is also arranged between the valve plate and the air mask for providing a force for the backward movement of the valve core. A sealing gasket cooperating with the air charging / discharging port is also provided on the rear side of the valve plate.

3. A rotary reversing air pump for inflation and deflation according to claim 2, characterized in that: The rotation conversion cylinder includes an outer cylinder and an inner cylinder. A partition wall extending in a spiral shape 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 at a position close to the top end of the first flow channel. The bottom side of the first flow channel communicates with the air outlet end of the blowing assembly. The side of the second flow channel is open; The rotation conversion cylinder is used to rotate the rotation conversion assembly to dock the first flow channel air port with the mounting seat connecting air port, so that the rotation conversion cylinder communicates the air outlet end of the blowing assembly and the air charging / discharging port through the first flow channel; or, by rotating the rotation conversion assembly, dock the first flow channel air port with the mounting seat exhaust port, and the side openings of the second flow channel correspond to the mounting seat connecting air port and the third flow channel respectively, so that the rotation conversion cylinder communicates the air outlet end of the blowing assembly and the mounting seat exhaust port through the first flow channel, and communicates the mounting seat connecting air port and the third flow channel through the second flow channel.

4. The rotary reversing air pump for inflation and deflation according to claim 3, characterized in that: A first limiting portion is further provided at the position of the side wall of the outer cylinder corresponding to the first flow channel air port; the first limiting portion cooperates with the rear end of the valve core of the one-way valve, and is used to make the first limiting portion abut against the rear end of the valve core through the rotation of the rotation conversion assembly when the first flow channel air port is docked with the mounting seat connection air port, so that the valve core is at the front end of the front and rear movement stroke, and further makes the one-way valve in a state of opening the air charging and discharging port; a limiting groove is further provided on the side wall of the outer cylinder, and the bottom of the limiting groove forms a second limiting portion; the second limiting portion cooperates with the rear end of the valve core of the one-way valve, and is used to make the second limiting portion abut against the rear end of the valve core under the action of the return spring when the limiting groove is docked with the mounting seat connection air port through the rotation of the rotation conversion assembly, so that the valve core is at the rear end of the front and rear movement stroke, and further makes the one-way valve in a state of closing the air charging and discharging port; a third limiting portion is further provided at the position of the side wall of the outer cylinder corresponding to the second flow channel; the third limiting portion cooperates with the rear end of the valve core of the one-way valve, and is used to make the third limiting portion abut against the rear end of the valve core through the rotation of the rotation conversion assembly when the second flow channel is docked with the mounting seat connection air port, so that the valve core is at the front end of the front and rear movement stroke, and further makes the one-way valve in a state of opening the air charging and discharging port.

5. A rotary reversing air pump for inflation and deflation according to claim 3, characterized in that: The air blowing assembly includes an air blowing motor, an impeller, a motor mounting seat, and an impeller cover; the air blowing motor is installed on the top side of the motor mounting seat, the impeller is located inside the impeller cover and is fixedly connected to the rotating end of the air blowing motor, the impeller cover is fixedly installed with the motor mounting seat, and an air blowing flow channel is formed inside; the motor mounting seat is fixedly connected to the bottom side of the outer cylinder, and the air blowing motor is located inside the inner cylinder; the bottom side of the impeller cover is open to form an air blowing flow channel air inlet, and the motor mounting seat has an air blowing flow channel air outlet communicated with the first flow channel.

6. The rotary commutation air pump for inflation and deflation according to claim 5, characterized in that: A fourth flow channel is formed between the bottom side of the impeller cover and the bottom surface of the rotation mounting cavity; a baffle is further 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 seat air inlet through the rotation of the rotation conversion assembly when the first flow channel air port is docked with the mounting seat connection air port, or to close the channel between the fourth flow channel and the mounting seat air inlet when the first flow channel air port is docked with the mounting seat exhaust port.

7. A rotary commutation air pump for inflation and deflation according to claim 1, characterized in that: A sealing ring is installed between the mounting seat connection air port and the air charging and discharging port of the mounting seat.

8. A rotary reversing air pump for inflation and deflation according to any one of claims 3-6, characterized in that: A first mounting hole is provided on the top side of the mounting seat; a microswitch is further installed on the top surface of the mounting seat; a connecting cylinder is further provided on the top side of the rotation conversion cylinder; the top end of the connecting cylinder passes through the first mounting hole; the first triggering portion and the second triggering portion are circumferentially distributed on the side surface of the area where the connecting cylinder extends out of the first mounting hole; the first triggering portion and the second triggering portion respectively cooperate with the triggering ends of the microswitch, and are used to trigger the microswitch by the first triggering portion through the rotation of the rotation conversion assembly when the first flow channel air port is docked with the mounting seat connection air port, and further make the air blowing assembly energized to work, or to trigger the microswitch by the second triggering portion through the rotation of the rotation conversion assembly when the first flow channel air port is docked with the mounting seat exhaust port, and further make the air blowing assembly energized to work; the microswitch is further used to cut off the power supply of the air blowing assembly when the triggering end is not in contact with the first triggering portion and the second triggering portion.

9. A rotary commutation air pump for inflation and deflation according to claim 8, characterized in that: The knob includes a knob body; a connector head fixedly installed with the connecting cylinder is provided on the bottom side of the knob body.

10. A rotary reversing air pump for inflation and deflation according to claim 9, characterized in that: The pump housing further includes an upper cover disposed on the housing; the upper cover is provided with the air inlet and outlet; a second mounting hole is provided on the upper cover; a claw cooperating with the second mounting hole is further provided on the bottom side of the knob for rotatably mounting the knob on the upper cover; three positioning grooves are further provided on the top surface of the upper cover outside the second mounting hole, and a positioning spring pin is provided on the bottom side of the knob body; the three positioning grooves cooperate with the positioning spring pin respectively for positioning the rotation angle of the knob in the stop state, inflation state and deflation state of the air pump.

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