Inflation and deflation dual-purpose air pump

Abstract

The utility model relates to an inflation and deflation dual-purpose air pump which comprises a shell, a first air port is formed in the bottom side of the shell, and a second air port is formed in the top side of the shell. An air blowing assembly, a reversing assembly and a one-way valve are arranged in the shell; the reversing assembly comprises a mounting base, a first cavity and a second cavity are formed in the mounting base, and the first cavity is provided with a first butt joint opening connected with an air inlet channel of the air blowing assembly and a second butt joint opening connected with an air outlet channel of the air blowing assembly. A baffle is further arranged between the first butt joint opening and the second butt joint opening. A reversing block is arranged in the first cavity and provided with a third cavity. A third butt joint port and a fourth butt joint port are formed in the top side of the third cavity, and a fifth butt joint port connected with the first air port is formed in the bottom side of the third cavity; a switching motor and a transmission assembly are mounted in the second cavity; the transmission assembly is connected with the reversing block. According to the dual-purpose air pump for inflation and deflation, the reversing block is controlled to switch air paths in an electric mode, and inflation and deflation are achieved; the overall structure is simple and compact, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the field of air pumps, in particular to an air pump that can be used for both 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 inflators are used for inflation. The inflation process is generally carried out by connecting the air pump to 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 both inflation and suction. By pressing or rotating the corresponding control knob with fingers, the corresponding mechanical structure is controlled to change, so as to switch between inflation and deflation. However, 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 inflation and deflation air pump has become an urgent problem to be solved at present. Content of the Utility Model

[0005] To solve the above technical problems, the utility model provides an air pump that can be used for both inflation and deflation. The electric way is adopted to control the reversing block to switch the air path, so as to realize inflation and deflation; the overall structure is simple and convenient to use.

[0006] The technical solution adopted by the utility model to solve its technical problems is: an inflation and deflation dual-purpose air pump, comprising a shell, a first air port for inflation and deflation is arranged on the bottom side of the shell, and a second air port communicating with the outside is arranged on the top side; a blower assembly is installed in the shell near the top side, a reversing assembly is installed near the bottom side, and a one-way valve is installed in the first air port; an air inlet channel is arranged on the right side of the bottom side of the blower assembly, and an air outlet channel is arranged on the left side of the bottom side; the reversing assembly comprises a mounting seat; a first cavity on the right and a second cavity on the left are provided in the mounting seat; a first pair of interfaces and a second pair of interfaces are arranged on the top side of the first cavity; the blower assembly is located on the top side of the mounting seat, and the air inlet channel is connected with the first pair of interfaces, and the air outlet channel is connected with the second pair of interfaces; the mounting seat is connected between the first pair of interfaces and the A baffle is also arranged between the second pair of interfaces; a reversing block is arranged in the first cavity, and the reversing block has a third cavity; a third pair of interfaces and a fourth pair of interfaces are arranged on the top side of the third cavity, and a fifth pair of interfaces connected with the first air port is arranged on the bottom side of the third cavity; a switching motor and a transmission assembly are installed in the second cavity; the transmission assembly is connected to the reversing block, and is used to drive the reversing block to move left and right in the mounting seat under the drive of the switching motor; the reversing block cooperates with the mounting seat, and is used for, when the reversing block moves to the leftmost end, the fourth pair of interfaces is connected with the second pair of interfaces, and the third pair of interfaces is closed by the baffle, thereby forming an inflation channel between the air outlet channel and the first air port, and is also used for, when the reversing block moves to the rightmost end, the third pair of interfaces is connected with the first pair of interfaces, and the fourth pair of interfaces is closed by the baffle, thereby forming an air discharge channel between the air inlet channel and the first air port.

[0007] Furthermore, a toggle block cooperating with the one-way valve is also provided in the third cavity of the reversing block, which is used for opening the one-way valve and then opening the first air port when the reversing block moves to the rightmost end; and is also used for disengaging the toggle block from the one-way valve and closing the one-way valve and then closing the first air port when the reversing block moves to the leftmost end.

[0008] Furthermore, the transmission assembly includes a first transmission cylinder connected to the rotating end of the switching motor and a second transmission cylinder connected to the reversing block; the first transmission cylinder has the freedom of rotation but does not have the freedom to move left and right, and the outer wall of the first transmission cylinder is provided with an external thread; the second transmission cylinder has the freedom to move left and right but does not have the freedom of rotation, and the second transmission cylinder is provided with a fourth cavity with a left opening for accommodating the first transmission cylinder, and the fourth cavity is provided with an internal thread that cooperates with the external thread of the first transmission cylinder; the switching motor is used to drive the first transmission cylinder to rotate forward or reverse, thereby moving the second transmission cylinder to the left or right.

[0009] Further, an outward-turning limiting portion is provided at the left end of the first transmission cylinder, and a limiting sleeve is also sleeved outside the first transmission cylinder; the limiting sleeve is fixedly installed with the second cavity, and a space for accommodating the outward-turning limiting portion and restricting the left-right movement of the outward-turning limiting portion is formed between the limiting sleeve and the second cavity.

[0010] Further, a claw is provided at the left end of the limiting sleeve, and a bayonet is correspondingly provided on the left wall of the mounting seat; the limiting sleeve is fixedly installed with the mounting seat through the claw and the bayonet.

[0011] Further, a guiding portion is provided on the outer wall of the second transmission cylinder, and a guiding groove in the left-right direction is provided in the guiding portion; a rail portion matching with the guiding groove is provided on the inner wall of the first cavity for enabling the second transmission cylinder to only have the freedom of left-right movement and not have the freedom of rotation.

[0012] Further, the right side of the first cavity is open, and a space for gas to pass through is left between the right side of the mounting seat and the housing.

[0013] Further, the external dimension of the second transmission cylinder is smaller than the dimension of the second cavity; a space for gas to pass through is left between the bottom side of the mounting seat in the area of the first cavity and the housing, between the outer side of the mounting seat in the left-leaning area and the housing, and between the left side of the mounting seat and the housing.

[0014] Further, a switching motor fixing cylinder is further provided in the second cavity of the mounting seat; the switching motor is fixed in the switching motor fixing cylinder; a fifth cavity with a left-side opening for sleeving outside the switching motor fixing cylinder is provided in the first transmission cylinder.

[0015] Further, the housing includes a lower housing and an upper cover; a key panel is provided on the upper cover, and the second air ports are distributed on the upper cover and in the area outside the key panel; an inflation function key and a deflation function key are provided on the key panel for performing or closing the inflation or deflation operation; the first air port is provided at the bottom side of the lower housing.

[0016] Advantages of the present utility model: A dual-purpose inflating and deflating air pump of the present utility model controls the switching of the air path by an electric method to realize inflation and deflation; the designs of the mounting seat, the switching motor, the transmission assembly and the switching block make the structure compact and effectively utilize the limited space in the housing; the overall structure is simple and convenient to use. Description of the Drawings

[0017] Figure 1 A three-dimensional schematic diagram of a dual-purpose inflating and deflating air pump for an embodiment;

[0018] Figure 2 A three-dimensional schematic diagram of another angle of a dual-purpose inflating and deflating air pump for an embodiment;

[0019] Figure 3 A kind of inflation and deflation dual-purpose air pump of embodiment Figure 2 Exploded diagram of angles;

[0020] Figure 4 A kind of inflation and deflation dual-purpose air pump of embodiment Figure 1 Exploded diagram of angles;

[0021] Figure 5 It is an internal schematic diagram of an inflation and deflation dual-purpose air pump in an inflation state of an embodiment;

[0022] Figure 6 It is an internal schematic diagram of a deflation state of an inflation and deflation dual-purpose air pump of an embodiment;

[0023] Among them, 1-shell, 2-blowing assembly, 3-check valve, 4-reversing assembly, 11-lower shell, 12-upper cover, 111-first air port, 121-second air port, 122-button panel, 21-inlet channel, 22-outlet channel, 41-mounting seat, 42-switching motor, 43-first transmission cylinder, 44-limiting sleeve, 45-second transmission cylinder, 46-reversing block, 411-first cavity, 412-second cavity, 413-baffle, 414-first pair of interfaces, 415-second pair of interfaces, 416-track part, 417-switching motor fixing cylinder, 418-bayonet, 431-external thread, 432-outward limit part, 433-fifth cavity, 441-claw, 451-guide groove, 452-fourth cavity, 453-internal thread, 461-third cavity, 462-third pair of interfaces, 463-fourth pair of interfaces, 464-sliding block. DETAILED DESCRIPTION

[0024] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. The embodiments are only used to explain the present invention and do not limit the protection scope of the present invention.

[0025] Example

[0026] Please refer to Figures 1 to 6As shown in the figure, this embodiment provides an air pump that can be used for both inflation and deflation, including a housing 1. A first air port 111 for air inflation and deflation is provided on the bottom side of the housing 1, and a second air port 121 communicating with the outside is provided on the top side. Inside the housing 1, a blower assembly 2 is installed near the top side, a commutation assembly 4 is installed near the bottom side, and a check valve 3 is installed in the first air port 111. An air intake passage 21 is provided on the right side of the bottom side of the blower assembly 2, and an air outlet passage 22 is provided on the left side of the bottom side. The commutation assembly 4 includes a mounting seat 41. The mounting seat 41 has a first cavity 411 on the right side and a second cavity 412 on the left side. On the top side of the first cavity 411, a first pair of interfaces 414 and a second pair of interfaces 415 are provided. The blower assembly 2 is located on the top side of the mounting seat 41, and the air intake passage 21 is connected to the first pair of interfaces 414, and the air outlet passage 22 is connected to the second pair of interfaces 415. A baffle 413 is further provided between the first pair of interfaces 414 and the second pair of interfaces 415 on the mounting seat 41. A commutation block 46 is provided in the first cavity 411, and the commutation block 46 has a third cavity 461. On the top side of the third cavity 461, a third pair of interfaces 462 and a fourth pair of interfaces 463 are provided, and on the bottom side of the third cavity, a fifth pair of interfaces connected to the first air port 111 are provided. A switching motor 42 and a transmission assembly are installed in the second cavity 412. The transmission assembly is connected to the commutation block 46 and is used to drive the commutation block 46 to move left and right in the mounting seat under the drive of the switching motor 42. The commutation block 46 cooperates with the mounting seat 41. When the commutation block 46 moves to the leftmost end, the fourth pair of interfaces 463 is communicated with the second pair of interfaces 415, and the third pair of interfaces 462 is blocked by the baffle 413, so as to form an inflation passage between the air outlet passage 22 and the first air port 111. It is also used that when the commutation block 46 moves to the rightmost end, the third pair of interfaces 462 is communicated with the first pair of interfaces 414, and the fourth pair of interfaces 463 is blocked by the baffle 413, so as to form a deflation passage between the air intake passage 22 and the first air port 111.

[0027] Referring again to Figure 3 , Figure 5 and Figure 6 As shown in the figure, a toggle block 464 cooperating with the check valve 3 is further provided in the third cavity 461 of the commutation block 46. When the commutation block 46 moves to the rightmost end, the toggle block 464 opens the check valve 3, thereby opening the first air port 111. It is also used that when the commutation block 46 moves to the leftmost end, the toggle block 464 disengages from the check valve 3, closes the check valve 3, and thereby closes the first air port 111.

[0028] Referring again to Figure 3 and Figure 4As shown, the transmission assembly includes a first transmission cylinder 43 connected to the rotating end of the switching motor 42, and a second transmission cylinder 45 connected to the commutation block 46; the first transmission cylinder 43 has a rotational freedom degree and does not have a left - right movement freedom degree, and an external thread 431 is provided on the outer wall of the first transmission cylinder 43; the second transmission cylinder 45 has a left - right movement freedom degree and does not have a rotational freedom degree, and the second transmission cylinder 45 is provided with a fourth cavity 452 with an open left side for accommodating the first transmission cylinder 43, and an internal thread 453 that is in threaded cooperation with the external thread 431 of the first transmission cylinder 43 is provided in the fourth cavity; the switching motor 42 is used to drive the first transmission cylinder 43 to rotate forward or backward, thereby moving the second transmission cylinder to the left or right.

[0029] Referring again to Figure 3 and Figure 4 As shown, an outward - turned limiting portion 432 is provided at the left end of the first transmission cylinder 43, and a limiting sleeve 44 is also sleeved outside the first transmission cylinder; the limiting sleeve 44 is fixedly installed with the second cavity 412, and a space for accommodating the outward - turned limiting portion 432 and restricting the left - right movement of the outward - turned limiting portion 432 is formed between the limiting sleeve 44 and the second cavity 412.

[0030] Referring again to Figure 3 and Figure 4 As shown, a claw 441 is provided at the left end of the limiting sleeve 44, and a bayonet 418 is correspondingly provided on the left wall of the mounting seat 41; the limiting sleeve 44 is fixedly installed with the mounting seat 41 through the claw 441 and the bayonet 418.

[0031] Referring again to Figure 3 and Figure 4 As shown, a guiding portion is provided on the outer wall of the second transmission cylinder 45, and a left - right guiding groove 451 is provided in the guiding portion; a track portion 416 that cooperates with the guiding groove 451 is provided on the inner wall of the first cavity 411, so that the second transmission cylinder 45 only has a left - right movement freedom degree and does not have a rotational freedom degree.

[0032] Referring again to Figure 3 and Figure 5 As shown, the right side of the first cavity is open, and a space for gas to pass through is left between the right side of the mounting seat 41 and the housing 1. This design is used when inflating. The commutation block moves to the leftmost end, and gas enters the housing 1 from the second air port 121, and then passes through the space between the outer side of the air - blowing assembly 2 and the housing 1, the space between the right side of the mounting seat 41 and the housing 1, the second cavity, and the first interface 414 in sequence and enters the air intake passage 21.

[0033] Referring again to Figure 3 and Figure 6As shown, the outer dimension of the second transmission cylinder 45 is smaller than that of the second cavity 412; there is a space for gas to pass between the bottom side of the mounting base 41 in the area of the first cavity and the housing 1, and between the outer side of the mounting base 41 in the left - hand area and the housing 1, and there is a space for gas to pass between the left side of the mounting base 41 and the housing 1. This design is used for deflation. When the commutation block moves to the rightmost end, the second transmission cylinder 45 corresponds to the second pair of interfaces 415. The gas output from the air outlet channel 22 enters the gap between the second transmission cylinder and the second cavity through the second pair of interfaces 415, and then successively enters the space between the mounting base 41 in the area of the first cavity and the housing 1, the space between the outer side of the mounting base 41 in the left - hand area and the housing 1, and the space between the outside of the air - blowing assembly 2 and the housing 1, and finally is discharged through the second air port 121 on the top side of the housing.

[0034] Referring again to Figure 3 and Figure 4 As shown, a switching motor fixing cylinder 417 is further provided in the second cavity 412 of the mounting base 41; the switching motor 42 is fixed in the switching motor fixing cylinder 417; the first transmission cylinder 43 is provided with a fifth cavity 433 with an opening on the left side for sleeving outside the switching motor fixing cylinder 417.

[0035] Referring again to Figure 4 As shown, the housing 1 includes a lower housing 11 and an upper cover 12; a key panel 122 is provided on the upper cover 12, and the second air ports are distributed on the upper cover 12 and in the area outside the key panel 122; an inflation function key and a deflation function key are provided on the key panel 122 for performing or closing the inflation or deflation operation; the first air port 111 is provided on the bottom side of the lower housing 11. In this embodiment, a circuit board cooperating with the key panel 122 is further installed on the bottom side of the upper cover 12. The circuit board is electrically connected to the air - blowing motor of the air - blowing assembly and the switching motor. The inflation function key(s) can be set to one or more according to actual needs, and multiple inflation function keys can provide inflation at different speeds.

[0036] For the inflatable and deflatable air pump of this embodiment, in the initial state, the commutation block is at the initial position at the leftmost end, its third pair of interfaces is blocked by a baffle, and the fourth pair of interfaces is connected to the second pair of interfaces; when inflating an inflatable product, first connect the first air port of the air pump to the air port of the inflatable product; then, press the inflation function key on the key panel, the air - blowing assembly starts, the gas enters the housing from the first air port, passes through the first pair of interfaces into the intake channel of the air - blowing assembly, and then is output from the air outlet channel of the air - blowing assembly, passes through the second pair of interfaces, the fourth pair of interfaces, the third cavity, and the fifth pair of interfaces into the first air port; the one - way valve opens under the action of gas pressure; the gas is output from the first air port and enters the inflatable product (as Figure 5 shown);

[0037] When the inflatable product is inflated to the required level, press the corresponding inflation function button on the button panel again, the air blowing component stops working, and the one-way valve closes;

[0038] When it is necessary to deflate the inflatable product, press the deflation function button on the button panel, switch the motor to forward rotation, drive the first transmission cylinder to rotate forward, make the second transmission cylinder move to the right, and then drive the reversing block to move to the rightmost end. At this time, the third pair of interfaces is connected with the first pair of interfaces, the fourth pair of interfaces is closed by the baffle, the second transmission cylinder corresponds to the position of the second pair of interfaces, and the one-way valve is pushed open under the action of the toggle block. At the same time, the blower assembly is started, and the gas enters the first air port, the fifth pair of interfaces, the third cavity, the third pair of interfaces, and the first pair of interfaces from the inflatable product into the air inlet channel of the blower assembly, and then is output from the air outlet channel of the blower assembly, through the second pair of interfaces, the gap between the second transmission cylinder and the second cavity, the space between the mounting seat in the first cavity area and the shell, the space between the outer side of the mounting seat on the left and the shell 1, and the space between the outer side of the blower assembly and the shell, and then is discharged through the second air port (such as Figure 6 shown);

[0039] When it is necessary to end the deflation, press the deflation function button on the button panel again to switch the motor reverse, drive the first transmission cylinder to rotate in the opposite direction, move the second transmission cylinder to the left, and then drive the reversing block to move to the far left end and return to the initial position; the one-way valve is closed, and at the same time, the blower assembly stops working.

[0040] The above embodiments should not limit the present invention in any way, and any technical solutions obtained by equivalent replacement or equivalent conversion shall fall within the protection scope of the present invention.

Claims

1. An air pump that can be used for both inflation and deflation, characterized in that: The venting device is a kind of air intake device, and the air intake device is a kind of air intake device, and the air intake device is a kind of air intake device for the air intake and the air outlet ... A reversing block is arranged in a cavity, and the reversing block has a third cavity; a third pair of interfaces and a fourth pair of interfaces are arranged on the top side of the third cavity, and a fifth pair of interfaces connected with the first air port is arranged on the bottom side of the third cavity; a switching motor and a transmission assembly are installed in the second cavity; the transmission assembly is connected with the reversing block, and is used to drive the reversing block to move left and right in the mounting seat under the drive of the switching motor; the reversing block cooperates with the mounting seat, and is used for when the reversing block moves to the leftmost end, the fourth pair of interfaces is connected with the second pair of interfaces, and the third pair of interfaces is closed by the baffle, thereby forming an inflation channel between the air outlet channel and the first air port, and is also used for when the reversing block moves to the rightmost end, the third pair of interfaces is connected with the first pair of interfaces, and the fourth pair of interfaces is closed by the baffle, thereby forming an air discharge channel between the air inlet channel and the first air port.

2. The inflatable and deflatable air pump according to claim 1, wherein: A toggle block cooperating with the one-way valve is also provided in the third cavity of the reversing block, which is used for opening the one-way valve and then opening the first air port when the reversing block moves to the rightmost end; and is also used for disengaging the toggle block from the one-way valve and closing the one-way valve and then closing the first air port when the reversing block moves to the leftmost end.

3. The inflatable and deflatable air pump according to claim 1, characterized in that: The transmission assembly includes a first transmission cylinder connected to the rotating end of the switching motor and a second transmission cylinder connected to the reversing block; the first transmission cylinder has the freedom of rotation but not the freedom to move left and right, and the outer wall of the first transmission cylinder is provided with an external thread; the second transmission cylinder has the freedom to move left and right but not the freedom of rotation, and the second transmission cylinder is provided with a fourth cavity with a left opening for accommodating the first transmission cylinder, and the fourth cavity is provided with an internal thread that cooperates with the external thread of the first transmission cylinder; the switching motor is used to drive the first transmission cylinder to rotate forward or reverse, thereby moving the second transmission cylinder to the left or right.

4. The inflatable and deflatable air pump according to claim 3, wherein: An outward-turning limit portion is arranged at the left end of the first transmission cylinder, and a limit sleeve is also sleeved on the outer side of the first transmission cylinder; the limit sleeve is fixedly installed on the second cavity, and a space is formed between the limit sleeve and the second cavity to accommodate the outward-turning limit portion and limit the left and right movement of the outward-turning limit portion.

5. The inflatable and deflatable air pump according to claim 4, characterized in that: The left end of the limiting sleeve is provided with a clamping claw, and the left wall of the mounting seat is correspondingly provided with a clamping opening; the limiting sleeve is fixedly mounted on the mounting seat through the clamping claw and the clamping opening.

6. The inflatable and deflatable air pump according to claim 3, characterized in that: A guiding portion is provided on the outer wall of the second transmission cylinder, and a guiding groove in the left-right direction is provided in the guiding portion; a rail portion matching with the guiding groove is provided on the inner wall of the first cavity for enabling the second transmission cylinder to have only the freedom of moving left and right and not to have the freedom of rotation.

7. The inflatable and deflatable air pump according to claim 6, characterized in that: The outer dimension of the second transmission cylinder is smaller than the dimension of the second cavity; spaces for gas passage are left between the bottom side of the mounting seat in the area of the first cavity and the housing, between the outer side of the mounting seat in the left-leaning area and the housing, and between the left side of the mounting seat and the housing.

8. The inflatable and deflatable air pump according to claim 3, characterized in that: The mounting seat is further provided with a switching motor fixing cylinder in the second cavity; the switching motor is fixed in the switching motor fixing cylinder; a fifth cavity with a left-side opening for sleeving outside the switching motor fixing cylinder is provided in the first transmission cylinder.

9. The inflatable and deflatable air pump according to claim 1, wherein: The right side of the first cavity is open, and a space for gas passage is left between the right side of the mounting seat and the housing.

10. A dual-purpose inflating and deflating air pump according to any one of claims 1-9, characterized in that: The housing includes a lower housing and an upper cover; a key panel is provided on the upper cover, and the second air ports are distributed on the upper cover and in the area outside the key panel; an inflation function key and a deflation function key are provided on the key panel for performing or closing inflation or deflation operations; the first air port is provided on the bottom side of the lower housing.

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