Waterproof air pump capable of being switched between inflation and deflation

Abstract

A waterproof air pump capable of being switched between inflation and exhaust comprises a lower shell, an upper cover and an air pump body, the upper cover can cover the lower shell and seal the lower shell relatively, and the air pump body can be placed in the lower shell in a removable mode, and is characterized in that a valve port communicated with the interior of an inflation product is formed in the side wall of the lower shell, and a one-way valve is arranged on the valve port; a centrifugal fan and a switching part are arranged in the air pump body, the centrifugal fan is provided with an air inlet and an air outlet, the air inlet is located below the air outlet, the switching part is arranged between the valve port and the centrifugal fan, the switching part is provided with a through hole and a protruding block protruding towards the direction of the valve port, and when the switching part is in a natural state, the two ends of the through hole are communicated with the valve port and the air outlet respectively. When the switching part moves downwards under the action of external force, the two ends of the through hole communicate with the valve port and the air inlet correspondingly, and the protruding block ejects the one-way valve open. The waterproof air pump has the functions of air inflation and air exhaust, and the air pump body can be switched between air inflation and air exhaust through the switching part.

Description

TECHNICAL FIELD

[0001] The utility model relates to air pump technical field especially relates to a waterproof air pump of chargeable exhaust switching. BACKGROUND

[0002] Large inflatable products often need to use external air pump for rapid inflation, however, for inflatable products that need to contact with water, such as inflatable boats, inflatable swim rings, inflatable swimming pools, etc., the air pump must have waterproof performance, if the air pump has poor sealing performance, it will cause electric leakage, and further cause safety problems.

[0003] The existing waterproof air pump is shown in Chinese patent application No. CN202210463484.8 (application publication No. CN114810636A) "waterproof air pump, inflatable product, inflatable product production method and use method", the waterproof air pump includes a lower shell, a waterproof upper cover and an air pump body, the lower shell is detachably connected with the waterproof upper cover and is relatively sealed, the air pump body is detachably connected with the lower shell, the air outlet of the air pump body is in communication with the air outlet of the lower shell, the waterproof air pump can realize waterproofing, and is convenient and fast to assemble and disassemble.

[0004] Although the above-mentioned waterproof air pump can inflate the inflatable product through the air pump body, the waterproof air pump does not have an exhaust function, and the inflatable product usually needs to be deflated after use for easy storage, if manual deflation is used for the inflatable product with large volume, the user will operate with great effort, if an air pump is used for deflation, the air pump needs to be carried, and the use is not convenient. Therefore, the waterproof air pump needs to be further improved. SUMMARY

[0005] The utility model provides a waterproof air pump of chargeable exhaust switching with reasonable structure for the above-mentioned technical problems.

[0006] The utility model adopts the technical scheme that the waterproof air pump of chargeable exhaust switching, including lower shell, upper cover and air pump body, the upper cover can cover lower shell and relative sealing, the air pump body can take out and place in lower shell, its characterized in that: the side wall of lower shell is equipped with the valve mouth that communicates with the inside of inflatable product, be equipped with check valve on the valve mouth, be equipped with centrifugal fan and switching unit in the air pump body, the centrifugal fan is equipped with air inlet and air outlet, the air inlet is located below the air outlet, the switching unit sets up between the valve mouth and centrifugal fan, be equipped with through -hole and the convex block that protrudes towards the valve mouth direction on the switching unit, the switching unit in natural state, both ends of the through -hole are communicated with the valve mouth and air outlet respectively, the switching unit in the state that moves downward under the action of external force, both ends of the through -hole are communicated with the valve mouth and air inlet respectively, the convex block opens check valve.

[0007] Further, the centrifugal fan comprises a motor, an impeller and an impeller cover, the impeller is arranged on the output shaft of the motor, the impeller cover is internally provided with a first chamber and a second chamber which are communicated with each other, the first chamber is located above the second chamber, the impeller is located in the first chamber, the first chamber is provided with an air outlet, and the second chamber is provided with an air inlet. When the through hole of the switching part is aligned with the air outlet, the motor drives the impeller to rotate, a low pressure area is formed in the impeller cover, and then the gas in the gas pump body is sucked into the second chamber from the air inlet, the gas in the second chamber flows out from the air outlet through the first chamber, and then the gas flows to the valve port through the through hole of the switching part, the gas can open the check valve, and then the gas flows to the inside of the inflatable product through the valve port. When the through hole of the switching part is aligned with the air inlet, the protrusion of the switching part can push open the check valve, and then the gas in the inflatable product flows out in sequence through the valve port, the through hole, the air outlet, the first chamber, the second chamber and the air inlet, and then the exhaust of the inflatable product is completed.

[0008] In order to make the protrusion push open the check valve, preferably, the check valve comprises a valve head capable of covering the valve port and a mounting part used for connecting with the lower shell, the upper end of the mounting part is provided with a first guide surface, and the protrusion is provided with a second guide surface matched with the first guide surface. When the switching part moves downward under the action of external force, the protrusion also moves downward, the cooperation between the second guide surface and the first guide surface can drive the check valve to move outward, so that the protrusion pushes open the check valve.

[0009] In order to make the gas pump body be capable of inhaling or exhausting, preferably, the gas pump body and the lower shell have a gap, and the sidewall of the gas pump body is provided with a plurality of air passing holes used for inhaling or exhausting. In the state that the upper cover is turned over, the gas can flow into or out of the gas pump body through the gap between the gas pump body and the lower shell.

[0010] Further, the gas pump body is provided with a first button, a second button and a first spring, the first button and the second button are provided with the first spring between the shell of the gas pump body, the first button can control the opening and closing of the centrifugal fan, the lower end of the second button is connected with the switching part, and the lower end of the switching part is provided with a second spring between the shell of the gas pump body. The first button controls the opening and closing of the inflation function by controlling the opening and closing of the centrifugal fan, that is, the first button can control the opening and closing of the motor; the second button controls the opening and closing of the exhaust function by means of the switching part, that is, the second button is pressed to make the switching part move downward to open the exhaust function, and the second button is pressed again to reset the switching part by means of the second spring to close the exhaust function. And the first button and the second button are both installed on the shell of the gas pump body through the first spring, and the first spring can press down or reset the first button and the second button.

[0011] In order to enable the upper cover to cover the lower shell, preferably, one side of the upper cover is hinged to the lower shell, the other side of the upper cover is provided with a clamping groove, the upper end of the lower shell is provided with a switch part, the switch part is arranged close to the side of the clamping groove, the switch part comprises a third key and a lock tongue arranged below the third key and in transmission connection with the third key, the lock tongue is located in the clamping groove in a natural state, and pressing the third key can drive the lock tongue to move out of the clamping groove. The lock tongue is located in the clamping groove, the upper cover can cover the lower shell, and the upper cover and the lower shell are in a locked state, the lock tongue is moved out of the clamping groove by pressing the third key, that is, the upper cover and the lower shell are in an unlocked state, the upper cover can be opened, so that the air pump body inflates or deflates.

[0012] Further, the lower end of the third key is provided with a third guide surface, and the lock tongue is provided with a fourth guide surface opposite to the third guide surface. When the third key is pressed and moves downward, the cooperation of the third guide surface and the fourth guide surface can make the lock tongue move into the lower shell, that is, the lock tongue moves out of the clamping groove.

[0013] In order to enable the upper cover and the lower shell to be relatively sealed, the upper cover is provided with a sealing ring capable of forming a sealing fit with the lower shell. When the upper cover covers the lower shell, the sealing ring can block the gap between the upper cover and the lower shell, so that the air pump has the functions of waterproof and air leakage prevention.

[0014] Further, the valve port is provided with a ventilation cover, and the ventilation cover is provided with a plurality of ventilation holes. The ventilation cover can prevent impurities such as wire ends in the inflated product from entering the valve port. The impurities can make the one-way valve at the valve port always open, so that the inflated product always deflates and cannot inflate.

[0015] Compared with the prior art, the advantages of the waterproof air pump are that: the waterproof air pump switches the communication between the through hole and the air inlet or the air outlet by the up-down movement of the switching part, that is, in the natural state of the switching part, the two ends of the through hole are in communication with the valve port and the air outlet, so that the gas flowing into the centrifugal fan through the air inlet flows into the valve port, and the one-way valve at the valve port is opened, thereby inflating the inflated product; when the switching part moves downward under the action of external force, the two ends of the through hole are in communication with the valve port and the air inlet, and the convex block opens the one-way valve, so that the gas in the inflated product flows out of the centrifugal fan through the valve port, the air inlet and the air outlet, thereby completing the deflation of the inflated product. Therefore, the waterproof air pump has the functions of inflation and deflation, and can switch between inflation and deflation. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view that the upper cover covers the lower shell in the embodiment of the utility model;

[0017] Figure 2A structure diagram of the upper cover being opened in the embodiment of the utility model;

[0018] Figure 3 A sectional view of the switch part locking the upper cover in the embodiment of the utility model;

[0019] Figure 4 A sectional view of the switch part unlocking the upper cover in the embodiment of the utility model;

[0020] Figure 5 An exploded schematic view of the one-way valve and the lower shell (omitting the breather cover) in the embodiment of the utility model;

[0021] Figure 6 An exploded schematic view of the air pump body and the lower shell in the embodiment of the utility model;

[0022] Figure 7 A sectional view of the air pump body in the embodiment of the utility model;

[0023] Figure 8 A sectional view of the embodiment of the utility model in the inflation state;

[0024] Figure 9 A sectional view of the embodiment of the utility model in the exhaust state. DETAILED DESCRIPTION

[0025] The utility model will be further described in detail below in combination with the embodiment of the drawings.

[0026] As shown in the best embodiment of the utility model. Figures 1-9

[0027] As shown in the best embodiment of the utility model. Figure 1 Figure 2 The waterproof air pump of the embodiment comprises a lower shell 1, an upper cover 2, an air pump body 3, a switch part 7 and a breather cover 9, one side of the upper cover 2 is hinged with the lower shell 1, the other side controls opening and closing thereof through the switch part 7, so that the upper cover 2 can cover the lower shell 1 and is relatively sealed, or the upper cover 2 is opened to expose the air pump body 3, the air pump body 3 can be taken out and placed in the lower shell 1, in the state that the air pump body 3 is installed in the lower shell 1, the air pump body 3 has a gap with the lower shell 1, the breather cover 9 is arranged on the side wall of the lower shell 1, a plurality of breather holes 91 are arranged on the breather cover 9 and are distributed along the circumference.

[0028] ​​The switch part 7 of the embodiment is arranged at the upper end of the lower shell 1, one side of the upper cover 2 is hinged to the lower shell 1, the other side of the upper cover 2 is provided with a clamping groove 21, the switch part 7 is arranged at the side close to the clamping groove 21, the switch part 7 comprises a third key 71 and a lock tongue 72 arranged below the third key 71 and in transmission connection with the third key 71, the lower end of the third key 71 is provided with a third guide surface 711, the lock tongue 72 is provided with a fourth guide surface 721 opposite to the third guide surface 711, the third guide surface 711 and the fourth guide surface 721 are both inclined surfaces; as shown in Figure 3 , the lock tongue 72 is located in the clamping groove 21 in the natural state, that is, the switch part 7 locks the upper cover 2, so that the upper cover 2 covers the lower shell 1; as shown in Figure 4 , when the third key 71 is pressed and moved downward, the lock tongue 72 can be moved into the lower shell 1 through the cooperation of the third guide surface 711 and the fourth guide surface 721, so that the lock tongue 72 is moved out of the clamping groove 21, that is, the switch part 7 unlocks the upper cover 2, the upper cover 2 can be rotated by means of the hinge shaft, so that the upper cover 2 is opened, thereby exposing the air pump body 3, and the user controls the opening and closing of the air pump body 3. In addition, the upper cover 2 of the embodiment is provided with a sealing ring 8 capable of sealingly cooperating with the lower shell 1, when the upper cover 2 covers the lower shell 1, the sealing ring 8 can block the gap between the upper cover 2 and the lower shell 1, so that the waterproof air pump has the functions of waterproof and air leakage prevention.

[0029] As shown in Figure 5 , the side wall of the lower shell 1 of the embodiment is provided with a valve port 11 communicating with the inside of the inflating product, the vent cover 9 is arranged at the valve port 11, the vent cover 9 covers the valve port 11, the valve port 11 is provided with a one-way valve 4, the one-way valve 4 comprises a valve head 41 capable of covering the valve port 11 and a mounting part 42 for connecting with the lower shell 1, the upper end of the mounting part 42 has a first guide surface 421.

[0030] As shown in Figure 6 and Figure 7As shown, the side wall of the air pump body 3 of the embodiment is provided with a plurality of air passing holes 31 for air inlet or outlet, the air pump body 3 is provided with a first button 32, a second button 33 and a first spring 34, the first button 32 and the second button 33 are provided between the shell of the air pump body 3 and the first spring 34, and the first spring 34 enables the first button 32 and the second button 33 to be pressed or reset. The air pump body 3 of the embodiment is provided with a centrifugal fan 5 and a switching part 6, the first button 32 can control the opening and closing of the centrifugal fan 5, and the lower end of the second button 33 is connected with the switching part 6. The centrifugal fan 5 comprises a motor 53, an impeller 54 and an impeller cover 55, the impeller 54 is arranged on the output shaft of the motor 53, the impeller cover 55 is provided with a first chamber 551 and a second chamber 552 which are connected in series, the first chamber 551 is located above the second chamber 552, the impeller 54 is located in the first chamber 551, the first chamber 551 is provided with an air outlet 52, the second chamber 552 is provided with an air inlet 51, and the air inlet 51 is located below the air outlet 52. The switching part 6 is arranged between the valve port 11 and the centrifugal fan 5, the switching part 6 is provided with a through hole 61, a protruding block 62 and a second spring 63, one end of the through hole 61 can move up and down in the valve port 11, the protruding block 62 is a protrusion towards the valve port 11, the protruding block 62 is provided with a second guide surface 621 which is matched with a first guide surface 421, the first guide surface 421 and the second guide surface 621 are inclined surfaces, the cooperation between the second guide surface 621 and the first guide surface 421 can drive the one-way valve 4 to move outward, so as to make the protruding block 62 open the one-way valve 4, and the second spring 63 is arranged between the lower end of the switching part 6 and the shell of the air pump body 3. In the natural state of the switching part 6 of the embodiment, the two ends of the through hole 61 are communicated with the valve port 11 and the air outlet 52 respectively, the gas flows into the air pump body 3 from the gap between the air pump body 3 and the lower shell 1 and through the air passing holes 31, the gas in the air pump body 2 flows into the centrifugal fan 5 through the air inlet 51, and then flows into the valve port 11 through the second chamber 552, the first chamber 551 and the air outlet 52 in sequence, and opens the one-way valve 4 at the valve port 11, the gas flows into the inflatable product through the air hole 91 of the air cover 9, so as to inflate the inflatable product; in the state that the switching part 6 of the embodiment is moved downward under the action of external force, the two ends of the through hole 61 are communicated with the valve port 11 and the air inlet 51 respectively, the protruding block 62 opens the one-way valve 4, so that the gas in the inflatable product flows out of the centrifugal fan 5 through the air hole 91, the valve port 11, the air inlet 51, the first chamber 551, the second chamber 552 and the air outlet 52 in sequence, and then flows out of the waterproof air pump from the gap between the air pump body 3 and the lower shell 1, so as to complete the exhaust of the inflatable product.

[0031] In addition, as Figure 8 and Figure 9As shown, the switching part 6 of the present embodiment is provided with a self-locking structure between the air pump body 3, which can be referred to the Chinese invention with the patent number CN200610051845.9 (the authorized publication number CN100404885C).

[0032] The working process of the present embodiment is as follows:

[0033] The inflation process of the waterproof air pump is as follows: firstly, the third button 71 of the switch part 7 is pressed, and the cooperation of the third guide surface 711 and the fourth guide surface 721 can make the locking tongue 72 move into the lower shell 1, i.e. the locking tongue 72 is removed from the clamping groove 21, the upper cover 2 and the lower shell 1 are in the unlocked state, the upper cover 2 is opened, and the air pump body 3 is exposed; then the user presses the first button 32, the first button 32 controls the centrifugal fan 5 to start, the motor 53 drives the impeller 54 to rotate, a negative pressure is generated in the impeller cover 55, and the gas flows into the air pump body 3 from the gap between the lower shell 1 and the air pump body 3 and the air passing hole 31, the two ends of the through hole 61 of the switching part 6 are respectively communicated with the valve port 11 and the air outlet 52, the gas in the air pump body 3 flows into the valve port 11 in turn through the air inlet 51, the second chamber 552, the first chamber 551 and the air outlet 52, the gas opens the one-way valve 4 at the valve port 11, the gas flows into the inflatable product through the air hole 91 on the air cover 9, and the inflatable product is inflated; finally, after the inflation is completed, the first button 32 is pressed to control the centrifugal fan 5 to be closed, and the upper cover 2 covers the lower shell 1, the locking tongue 72 is located in the clamping groove 21, and the upper cover 2 and the lower shell 1 are in the locked state.

[0034] The deflation process of the waterproof air pump is as follows: firstly, the third button 71 of the switch part 7 is pressed, and the cooperation of the third guide surface 711 and the fourth guide surface 721 can make the locking tongue 72 move into the lower shell 1, i.e. the locking tongue 72 is removed from the clamping groove 21, the upper cover 2 and the lower shell 1 are in the unlocked state, the upper cover 2 is opened, and the air pump body 3 is exposed; then the user presses the second button 33, the second button 33 drives the switching part 6 to move downward, the two ends of the through hole 61 are communicated with the valve port 11 and the air inlet 51, the protruding block 62 opens the one-way valve 4, the gas in the inflatable product flows out of the centrifugal fan 5 in turn through the air hole 91, the valve port 11, the air inlet 51, the first chamber 551, the second chamber 552 and the air outlet 52, and then flows out of the waterproof air pump from the gap between the air pump body 3 and the lower shell 1 through the air passing hole 31; finally, after the deflation is completed, the second button 33 is pressed to reset the switching part 6, and then the upper cover 2 covers the lower shell 1, the locking tongue 72 is located in the clamping groove 21, and the upper cover 2 and the lower shell 1 are in the locked state.

Claims

1. A waterproof and airproof pump with switchable exhaust, comprising a lower shell (1), an upper cover (2) and a pump body (3), the upper cover (2) can cover the lower shell (1) and is relatively sealed, and the pump body (3) is placed in the lower shell (1) and can be taken out, characterized in that: The side wall of the lower shell (1) is provided with a valve port (11) in communication with the inside of the aerated product, the valve port (11) is provided with a one-way valve (4), the air pump body (3) is provided with a centrifugal fan (5) and a switching part (6), the centrifugal fan (5) is provided with an air inlet (51) and an air outlet (52), the air inlet (51) is located below the air outlet (52), the switching part (6) is arranged between the valve port (11) and the centrifugal fan (5), the switching part (6) is provided with a through hole (61) and a protrusion (62) protruding towards the valve port (11), in the natural state of the switching part (6), the two ends of the through hole (61) are in communication with the valve port (11) and the air outlet (52) respectively, in the state of the switching part (6) moving downward under the action of external force, the two ends of the through hole (61) are in communication with the valve port (11) and the air inlet (51) respectively, and the protrusion (62) opens the one-way valve (4).

2. The water- resistant air pump of claim 1, wherein: The centrifugal fan (5) comprises a motor (53), an impeller (54) and an impeller cover (55), the impeller (54) is arranged on the output shaft of the motor (53), the impeller cover (55) is provided with a first chamber (551) and a second chamber (552) in communication with each other, the first chamber (551) is located above the second chamber (552), the impeller (54) is located in the first chamber (551), the first chamber (551) is provided with an air outlet (52), and the second chamber (552) is provided with an air inlet (51).

3. The water- resistant air pump of claim 1, wherein: The one-way valve (4) comprises a valve head (41) capable of covering the valve port (11) and a mounting part (42) for connecting with the lower shell (1), the upper end of the mounting part (42) has a first guide surface (421), and the protrusion (62) is provided with a second guide surface (621) matched with the first guide surface (421).

4. The water- resistant air pump of claim 1, wherein: The air pump body (3) and the lower shell (1) have a gap, and the side wall of the air pump body (3) is provided with a plurality of air holes (31) for air inlet or air outlet.

5. The water- resistant air pump of claim 1, wherein: The air pump body (3) is provided with a first button (32), a second button (33) and a first spring (34), the first button (32) and the second button (33) are provided with the first spring (34) between the first button (32), the second button (33) and the shell of the air pump body (3), the first button (32) can control the opening and closing of the centrifugal fan (5), the lower end of the second button (33) is connected with the switching part (6), and the second spring (63) is arranged between the lower end of the switching part (6) and the shell of the air pump body (3).

6. A pump according to any one of claims 1 to 5, wherein: One side of the upper cover (2) is hinged with the lower shell (1), the other side of the upper cover (2) is provided with a clamping groove (21), the upper end of the lower shell (1) is provided with a switch part (7), the switch part (7) is arranged on the side close to the clamping groove (21), the switch part (7) comprises a third key (71) and a lock tongue (72) arranged below the third key (71) and in transmission connection with the third key (71), the lock tongue (72) is located in the clamping groove (21) in the natural state, and pressing the third key (71) can drive the lock tongue (72) to move out of the clamping groove (21).

7. The water- resistant gas pump of claim 6, wherein: The lower end of the third key (71) is provided with a third guide surface (711), and the lock tongue (72) is provided with a fourth guide surface (721) opposite to the third guide surface (711).

8. The water- resistant pump of claim 1, wherein: The upper cover (2) is provided with a sealing ring (8) capable of forming a sealing fit with the lower shell (1).

9. The water- resistant air pump of claim 1, wherein: An air vent cover (9) is arranged at the valve port (11), and a plurality of air vent holes (91) are arranged on the air vent cover (9).

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