Diaphragm air pump

Abstract

The diaphragm air pump comprises an upper cover, a one-way valve fixing seat, a main diaphragm, a motor fixing seat and a diaphragm fixing seat, and an air outlet pipe is formed on the upper cover; the one-way valve fixing base abuts against the upper cover for sealing, multiple sets of air inlet holes and multiple sets of air outlet holes are formed in the one-way valve fixing base, and the multiple sets of air outlet holes are independently formed relative to the multiple sets of air inlet holes and communicate with the air outlet pipe; the main diaphragm is provided with a plurality of air bags, and the air bags are respectively communicated with the corresponding air inlet holes and the corresponding air outlet holes; an air inlet pipe is formed on the motor fixing seat; the diaphragm fixing seat is installed between the motor fixing seat and the one-way valve fixing seat and abuts against the diaphragm connecting part for limiting. A first through hole is formed in the diaphragm fixing seat, a second through hole is formed in the one-way valve fixing seat, the first through hole corresponds to the second through hole, the first through hole is communicated with the corresponding second through hole to form a communication channel, and the communication channel is communicated with the air inlet pipe and the multiple sets of air inlet holes. The exhaust efficiency of the diaphragm air pump can be improved.

Description

Technical Field

[0001] This application relates to the technical field of gas flow control, and in particular to a diaphragm air pump. Background Technology

[0002] Diaphragm air pumps are widely used in household appliances such as floor scrubbers, coffee machines, and massage chairs. When the diaphragm air pump is working, the drive motor drives the diaphragm support to move up and down through the eccentric wheel and the core rod. The diaphragm support drives the air bladder on the main diaphragm to move up and down to realize the intake and exhaust of gas.

[0003] Currently, existing diaphragm air pumps typically have flaps on the air bladder of the main diaphragm, allowing gas flowing through the intake pipe to enter the air bladder and thus inflate the main diaphragm's air bladder. However, due to the structural characteristics of the flaps, they are easily deformed during operation as the diaphragm support pushes against the air bladder. This can lead to air leakage from the air bladder, reducing the air pump's exhaust efficiency. Utility Model Content

[0004] In view of this, it is necessary to provide a diaphragm air pump that can solve the above-mentioned technical problems.

[0005] To solve the above-mentioned technical problems, this application provides the following technical solution:

[0006] A diaphragm air pump, the diaphragm air pump comprising:

[0007] The top cover has an air vent.

[0008] A one-way valve mounting base is sealed against the upper cover. The one-way valve mounting base has multiple sets of air inlets and multiple sets of air outlets. The multiple sets of air outlets are independently arranged relative to the multiple sets of air inlets and are respectively connected to the air outlet pipe.

[0009] The main diaphragm abuts and seals against the one-way valve fixing seat. The main diaphragm has multiple air bladders, which are connected as one unit through the diaphragm connecting part. The multiple air bladders, multiple sets of air inlets and multiple sets of air outlets correspond one-to-one, and the air bladders are respectively connected to the corresponding air inlets and corresponding air outlets.

[0010] The motor mounting bracket has an air inlet pipe.

[0011] A diaphragm holder is installed between the motor holder and the check valve holder, and abuts against and limits the diaphragm connection portion.

[0012] The diaphragm fixing seat has a first through hole, and the one-way valve fixing seat has a second through hole. The first through hole and the second through hole are correspondingly arranged, and the first through hole and the corresponding second through hole are connected to form a connecting channel. The connecting channel is connected to the air inlet pipe and multiple sets of air inlets respectively.

[0013] It is understood that in the diaphragm air pump of this application, the air inlet pipe is connected to multiple sets of air inlets through a connecting channel, so that the gas conducted in the air inlet pipe can enter the corresponding air bladder through the connecting channel and multiple sets of air inlets. In this way, it is not necessary to open air inlets on the air bladder to connect the air inlet pipe and the air bladder. This can prevent air leakage when the air bladder is venting and improve the venting pressure and vacuum when the air bladder moves up and down, thereby improving the venting efficiency of the diaphragm air pump.

[0014] In one embodiment, the diaphragm holder has a plurality of abutting protrusions, the diaphragm holder can abut against the one-way valve holder through the plurality of abutting protrusions, and the abutting protrusions are disposed on the outer side of the diaphragm connection portion;

[0015] The second through hole extends through the abutting protrusion.

[0016] It is understandable that the main diaphragm is assembled and fixed by using multiple abutting protrusions on the diaphragm fixing seat to abut against the one-way valve fixing seat. This avoids the need to open connection holes on the main diaphragm for connecting with the diaphragm fixing seat and the one-way valve fixing seat. This allows the airbag volume on the main diaphragm to be designed to be larger, thereby increasing the amount of air discharged after the airbag is deformed under pressure. On the other hand, it also simplifies the structure of the main diaphragm.

[0017] In one embodiment, the diaphragm air pump further includes a connector that is connected to the motor mounting base after passing through the upper cover, the second through hole, and the first through hole;

[0018] The connector has a preset gap between itself and the first wall of the first through hole and the second wall of the second through hole.

[0019] Understandably, the first and second through holes allow the air intake pipe to connect with the air intake port, and also allow the connector to pass through and achieve the assembly connection between the top cover, the one-way valve fixing seat, the diaphragm fixing seat, and the motor fixing seat. This satisfies the requirement that the gas guided by the air intake pipe can enter the airbag, and avoids the need to open additional connection holes on the one-way valve fixing seat and the diaphragm fixing seat for connection with the top cover and the motor fixing seat. It serves a dual purpose and simplifies the structure of the one-way valve fixing seat and the diaphragm fixing seat.

[0020] In one embodiment, the motor mounting base has a connecting protrusion, which is correspondingly disposed with the connector, and the motor mounting base can be connected to the corresponding connector through the connecting protrusion;

[0021] The connecting protrusion has a notch, which communicates with the air intake pipe and the first through hole.

[0022] In one embodiment, an extension sleeve is formed on the diaphragm holder, the extension sleeve is correspondingly disposed to the first through hole, and the extension sleeve is in communication with the corresponding first through hole;

[0023] The extension sleeve can be inserted into the corresponding connecting protrusion.

[0024] Understandably, the extension sleeve is assembled to the protrusion by a plug-in fit, which enables the diaphragm holder to be positioned on the motor holder, ensuring the accuracy of their positions when the diaphragm holder is assembled on the motor holder.

[0025] In one embodiment, a diaphragm-type check valve is installed on the check valve mounting base. The diaphragm-type check valve is located in the area where the multiple sets of air outlets are located and abuts against and limits the upper cover, and is used to control the unidirectional flow of the multiple sets of air outlets.

[0026] The diaphragm-type check valve is configured as an integral structure.

[0027] Understandably, configuring the diaphragm check valve as a one-piece structure allows it to be manufactured using a one-piece injection molding process, which reduces the manufacturing cost of the diaphragm check valve.

[0028] In one embodiment, the diaphragm-type one-way valve includes a diaphragm mounting part and a plurality of diaphragm sealing parts, wherein the plurality of diaphragm sealing parts correspond one-to-one with a plurality of sets of air outlets, and the diaphragm sealing parts are used to control the unidirectional flow of the corresponding air outlets;

[0029] A foolproof structure is formed between the diaphragm mounting part and the one-way valve fixing seat.

[0030] Understandably, the above structural design improves the accuracy of the position of the diaphragm check valve and the check valve mounting base when they are assembled, and facilitates the assembly of the diaphragm check valve onto the check valve mounting base.

[0031] In one embodiment, a plurality of diaphragms are installed on the one-way valve mounting base, and the plurality of diaphragms correspond one-to-one with the plurality of air inlets. The diaphragms are disposed at the corresponding air inlet positions and connected to the one-way valve mounting base to control the one-way flow of the corresponding air inlets.

[0032] In one embodiment, the number of communication channels is configured to be four.

[0033] Understandably, with the above structural design, the gas introduced by the air intake pipe can enter multiple sets of air intake holes through four connecting channels, so that the airbag can receive enough gas through the air intake holes and meet the air intake requirements of the airbag.

[0034] In one embodiment, the number of airbags is configured to be four.

[0035] It is understandable that configuring the number of air bladders to four allows the flow control of the diaphragm air pump to be achieved through the pressure deformation of the four air bladders during operation, thereby further improving the exhaust efficiency of the diaphragm air pump during operation.

[0036] Due to the application of the above solution, this application has the following advantages compared with the prior art:

[0037] The diaphragm air pump claimed in this application has an air inlet pipe that is connected to multiple sets of air inlets through a connecting channel. This allows the gas flowing through the air inlet pipe to enter the corresponding air bladder through the connecting channel and the multiple sets of air inlets. This avoids the need to open air inlets on the air bladder to connect the air inlet pipe and the air bladder, thus preventing air leakage during exhaust and increasing the exhaust pressure and vacuum when the air bladder moves up and down, thereby improving the exhaust efficiency of the diaphragm air pump. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 This is a schematic diagram of the structure of a diaphragm air pump provided in an embodiment of this application.

[0040] Figure 2 This is an exploded view of a diaphragm air pump provided in one embodiment of this application.

[0041] Figure 3 This is a cross-sectional view of a diaphragm air pump provided in an embodiment of this application.

[0042] Figure 4 This is a partial structural schematic diagram of a diaphragm air pump provided in an embodiment of this application.

[0043] Figure 5This is a schematic diagram of the structure of a motor mounting bracket provided in an embodiment of this application.

[0044] Figure 6 This is a schematic diagram of the structure of a one-way valve mounting base provided in an embodiment of this application.

[0045] Figure 7 This is a schematic diagram of the structure of the main diaphragm provided in an embodiment of this application.

[0046] Reference numerals: 100, diaphragm air pump; 101, connecting channel; 10, top cover; 11, air outlet pipe; 20, one-way valve mounting seat; 21, air inlet; 22, air outlet; 23, second through hole; 231, second hole wall; 24, diaphragm one-way valve; 241, diaphragm mounting part; 242, diaphragm sealing part; 25, umbrella diaphragm; 30, main diaphragm; 31, air bladder; 32, diaphragm connecting part; 40, motor mounting seat; 41, air inlet pipe; 42, connecting protrusion; 421, notch; 50, diaphragm mounting seat; 51, first through hole; 511, first hole wall; 52, abutting protrusion; 53, extension sleeve; 60, connector; 70, drive motor; 71, rotating shaft; 80, eccentric wheel; 90, mandrel; 110, diaphragm support. Detailed Implementation

[0047] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0048] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0049] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0050] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0051] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0052] The diaphragm air pump 100 claimed in this application is used in floor scrubbers, coffee machines, massage chairs, and other applications requiring pressurization or negative pressure.

[0053] like Figures 1 to 7 As shown, the diaphragm air pump 100 provided in this application includes an upper cover 10, a one-way valve fixing seat 20, a main diaphragm 30, a motor fixing seat 40, and a diaphragm fixing seat 50. The upper cover 10 forms an air outlet pipe 11. The one-way valve fixing seat 20 abuts and seals with the upper cover 10. The one-way valve fixing seat 20 has multiple sets of air inlets 21 and multiple sets of air outlets 22. The multiple sets of air outlets 22 are independently arranged relative to the multiple sets of air inlets 21 and are respectively connected to the air outlet pipe 11. The main diaphragm 30 abuts and seals with the one-way valve fixing seat 20. The main diaphragm 30 has multiple air bladders 31. The multiple air bladders 31 are connected as one unit through diaphragm connecting parts 32. The multiple air bladders 31 and the multiple sets of air inlets are connected as one unit. The air bladder 31 and multiple sets of air outlets 22 correspond one-to-one, and the air bladder 31 is connected to the corresponding air inlet 21 and the corresponding air outlet 22 respectively; the motor mounting base 40 forms an air inlet pipe 41; the diaphragm mounting base 50 is installed between the motor mounting base 40 and the one-way valve mounting base 20, and abuts against and limits the diaphragm connection part 32; wherein, the diaphragm mounting base 50 is provided with a first through hole 51, and the one-way valve mounting base 20 is provided with a second through hole 23, the first through hole 51 and the second through hole 23 are correspondingly arranged, and the first through hole 51 and the corresponding second through hole 23 are connected to form a connecting channel 101, which is connected to the air inlet pipe 41 and multiple sets of air inlets 21 respectively.

[0054] As can be seen from the above, in the diaphragm air pump 100 of this application, the air inlet pipe 41 is connected to multiple sets of air inlets 21 through the connecting channel 101, so that the gas conducted in the air inlet pipe 41 can enter the corresponding airbag 31 through the connecting channel 101 and the multiple sets of air inlets 21. In this way, it is not necessary to open an air inlet (not shown) on the airbag 31 for connecting the air inlet pipe 41 and the airbag 31. This can prevent the airbag 31 from leaking air when it is venting, and improve the venting pressure and vacuum when the airbag 31 moves up and down, thereby improving the venting efficiency of the diaphragm air pump 100.

[0055] like Figure 3 , Figure 4 As shown, in one embodiment, the number of connecting channels 101 is configured to be four. This allows the gas introduced by the air intake pipe 41 to pass through the four connecting channels 101 and enter at least a number of air intake holes 21, enabling the airbag 31 to receive a sufficient number of gases through the air intake holes 21 and meet the air intake requirements of the airbag 31. It is understood that in other embodiments, the number of connecting channels 101 may also be configured to be three, five, or even more, which will not be elaborated upon here.

[0056] like Figure 7 As shown, in one embodiment, the number of airbags 31 is configured to be four. Configuring the number of airbags 31 to four allows the flow rate of the diaphragm air pump 100 to be controlled by the compressive deformation of the four airbags 31 during operation, thereby further improving the exhaust efficiency of the diaphragm air pump 100 during operation. It is understood that in other embodiments, the number of airbags 31 may also be configured to be three, five, or even more, which will not be elaborated upon here.

[0057] like Figure 2 As shown, in one embodiment, a plurality of diaphragms 25 are installed on the one-way valve mounting base 20. The plurality of diaphragms 25 correspond one-to-one with a plurality of air inlets 21. The diaphragms 25 are disposed at the corresponding air inlets 21 and connected to the one-way valve mounting base 20 to control the one-way conduction of the corresponding air inlets 21.

[0058] like Figure 4 As shown, in one embodiment, a diaphragm-type check valve 24 is installed on the check valve mounting base 20. The diaphragm-type check valve 24 is disposed in the area where multiple sets of vent holes 22 are located and abuts against and limits the upper cover 10, used to control the unidirectional flow of the multiple sets of vent holes 22. The diaphragm-type check valve 24 is configured as a single piece, allowing it to be manufactured by integral injection molding, thus reducing the manufacturing cost of the diaphragm-type check valve 24. Here, the material of the diaphragm-type check valve 24 can specifically be rubber.

[0059] like Figure 4As shown, in one embodiment, the diaphragm-type check valve 24 includes a diaphragm mounting portion 241 and a plurality of diaphragm sealing portions 242. The plurality of diaphragm sealing portions 242 correspond one-to-one with a plurality of vent holes 22. The diaphragm sealing portions 242 are used to control the unidirectional flow of the corresponding vent holes 22. A foolproof structure is formed between the diaphragm mounting portion 241 and the check valve mounting seat 20. This can improve the accuracy of the position of the diaphragm-type check valve 24 when it is assembled on the check valve mounting seat 20, and facilitate the assembly of the diaphragm-type check valve 24 onto the check valve mounting seat 20.

[0060] As can be seen from the above, when the diaphragm air pump 100 is working, the gas introduced by the air inlet pipe 41 can first enter the air bag 31 through the umbrella membrane 25 via the air inlet hole 21 of the one-way valve fixing seat 20. After that, the air bag 31 is deformed by pressure, which can squeeze the gas in the air bag 31 out toward the diaphragm sealing part 242, thereby driving the diaphragm sealing part 242 to open and deform, and making the air outlet hole 22 of the one-way valve fixing seat 20 connected with the air outlet pipe 11, so that the gas in the air bag 31 can be discharged into the air outlet pipe 11 through the air outlet hole 22.

[0061] like Figure 3 As shown, in one embodiment, the diaphragm fixing seat 50 has multiple abutting protrusions 52. The diaphragm fixing seat 50 can abut against the one-way valve fixing seat 20 through the multiple abutting protrusions 52, and the abutting protrusions 52 are disposed on the outer side of the diaphragm connecting portion 32; wherein, the second through hole 23 is disposed through the abutting protrusions 52. That is to say, the assembly and fixing of the main diaphragm 30 is achieved by the abutting between the multiple abutting protrusions 52 on the diaphragm fixing seat 50 and the one-way valve fixing seat 20. In this way, it is possible to avoid opening a connection hole (not shown) on the main diaphragm 30 for connecting with the diaphragm fixing seat 50 and the one-way valve fixing seat 20. This allows the volume of the airbag 31 on the main diaphragm to be designed to be larger, so as to increase the exhaust volume after the airbag 31 is deformed by pressure; on the other hand, it also simplifies the structure of the main diaphragm 30.

[0062] like Figures 1 to 3As shown, in one embodiment, the diaphragm air pump 100 further includes a connector 60, which passes through the upper cover 10, the second through hole 23, and the first through hole 51 before connecting to the motor mounting base 40. A preset gap is formed between the connector 60 and the first hole wall 511 of the first through hole 51 and the second hole wall 231 of the second through hole 23, respectively. That is, the first through hole 51 and the second through hole 23 allow the air inlet pipe to communicate with the air inlet 21, and also allow the connector 60 to pass through and connect the upper cover 10, the one-way valve mounting base 20, the diaphragm mounting base 50, and the motor mounting base 40. This satisfies the requirement that the gas conducted through the air inlet pipe 41 can enter the airbag 31, and avoids the need for additional connection holes (not shown) on the one-way valve mounting base 20 and the diaphragm mounting base 50 for connection with the upper cover 10 and the motor mounting base 40, thus serving a dual purpose and simplifying the structure of the one-way valve mounting base 20 and the diaphragm mounting base 50. Here, connector 60 can be set as bolt, self-tapping screw, etc.

[0063] like Figure 5 As shown, in one embodiment, a connecting protrusion 42 is formed on the motor mounting base 40. The connecting protrusion 42 is correspondingly disposed with the connector 60, and the motor mounting base 40 can be connected to the corresponding connector 60 through the connecting protrusion 42. The connecting protrusion 42 has a notch 421, which communicates with the air intake pipe 41 and the first through hole 51, respectively. This allows the gas flowing through the air intake pipe 41 to enter the first through hole 51 through the notch 421.

[0064] like Figure 2 , Figure 3 As shown, in one embodiment, an extension sleeve 53 is formed on the diaphragm holder 50. The extension sleeve 53 is correspondingly disposed with the first through hole 51 and communicates with the corresponding first through hole 51. The extension sleeve 53 can be inserted into the corresponding connecting protrusion 42. That is, the extension sleeve 53 is assembled to the connecting protrusion 42 in an insert-fit manner, which can realize the assembly limit of the diaphragm holder 50 on the motor holder 40 and ensure the accuracy of the position of the diaphragm holder 50 and the motor holder 40 when they are assembled.

[0065] like Figure 2 , Figure 3As shown, in one embodiment, the diaphragm air pump 100 further includes a drive motor 70, an eccentric wheel 80, a mandrel 90, and a diaphragm support 110. The eccentric wheel 80 is mounted on the rotating shaft 71 of the drive motor 70 and is connected to the drive motor 70 for transmission. One side of the mandrel 90 is inserted into the eccentric wheel 80 and connected to the eccentric wheel 80, and the other side is inserted into the diaphragm support 110 and connected to the diaphragm support 110. When the diaphragm air pump 100 is working, the drive motor 70 can drive the diaphragm support 110 to reciprocate through the eccentric wheel 80 and the mandrel 90 by utilizing the eccentric structure of the eccentric wheel 80, so as to realize that the diaphragm support 110 sequentially squeezes each air bladder 31 of the main diaphragm 30.

[0066] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0067] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A diaphragm air pump, characterized in that, The diaphragm air pump (100) includes: The top cover (10) has an air outlet (11); The one-way valve fixing seat (20) is sealed to the upper cover (10). The one-way valve fixing seat (20) has multiple sets of air inlets (21) and multiple sets of air outlets (22). The multiple sets of air outlets (22) are independently set relative to the multiple sets of air inlets (21) and are respectively connected to the air outlet pipe (11). The main diaphragm (30) is sealed to the one-way valve fixing seat (20). The main diaphragm (30) has multiple airbags (31). The multiple airbags (31) are connected to each other by the diaphragm connecting part (32). The multiple airbags (31), multiple sets of air inlets (21) and multiple sets of air outlets (22) correspond one-to-one, and the airbags (31) are respectively connected to the corresponding air inlets (21) and the corresponding air outlets (22). The motor mounting bracket (40) has an air inlet pipe (41); A diaphragm holder (50) is installed between the motor holder (40) and the one-way valve holder (20), and abuts against and limits the diaphragm connection part (32); The diaphragm holder (50) has a first through hole (51), and the one-way valve holder (20) has a second through hole (23). The first through hole (51) and the second through hole (23) are correspondingly arranged, and the first through hole (51) and the corresponding second through hole (23) are connected to form a connecting channel (101). The connecting channel (101) is connected to the air inlet pipe (41) and multiple sets of air inlets (21).

2. The diaphragm air pump according to claim 1, characterized in that, The diaphragm holder (50) has a plurality of abutting protrusions (52), and the diaphragm holder (50) can abut against the one-way valve holder (20) through the plurality of abutting protrusions (52), and the abutting protrusions (52) are disposed on the outside of the diaphragm connecting part (32); The second through hole (23) is provided through the abutting protrusion (52).

3. The diaphragm air pump according to claim 1, characterized in that, The diaphragm air pump (100) also includes a connector (60), which is connected to the motor mounting base (40) after passing through the upper cover (10), the second through hole (23) and the first through hole (51); There are preset gaps between the connector (60) and the first hole wall (511) of the first through hole (51) and the second hole wall (231) of the second through hole (23), respectively.

4. The diaphragm air pump according to claim 3, characterized in that, A connecting protrusion (42) is formed on the motor mounting base (40), the connecting protrusion (42) is correspondingly provided with the connector (60), and the motor mounting base (40) can be connected to the corresponding connector (60) through the connecting protrusion (42); The connecting protrusion (42) has a notch (421) which is connected to the air intake pipe (41) and the first through hole (51).

5. The diaphragm air pump according to claim 4, characterized in that, An extension sleeve (53) is formed on the diaphragm fixing seat (50). The extension sleeve (53) is correspondingly disposed with the first through hole (51), and the extension sleeve (53) is connected to the corresponding first through hole (51). The extension sleeve (53) can be inserted into the corresponding connecting protrusion (42).

6. The diaphragm air pump according to claim 1, characterized in that, A diaphragm-type check valve (24) is installed on the one-way valve mounting base (20). The diaphragm-type check valve (24) is located in the area where multiple sets of air outlets (22) are located and abuts against the upper cover (10) for limiting the movement of multiple sets of air outlets (22). The diaphragm-type check valve (24) is configured as an integral structure.

7. The diaphragm air pump according to claim 6, characterized in that, The diaphragm-type one-way valve (24) includes a diaphragm mounting part (241) and multiple diaphragm sealing parts (242). The multiple diaphragm sealing parts (242) correspond one-to-one with multiple sets of air outlets (22). The diaphragm sealing parts (242) are used to control the unidirectional flow of the corresponding air outlets (22). A foolproof structure is formed between the diaphragm mounting part (241) and the one-way valve fixing seat (20).

8. The diaphragm air pump according to claim 1, characterized in that, Multiple diaphragms (25) are installed on the one-way valve mounting base (20). Each of the multiple diaphragms (25) corresponds to one of the multiple air inlets (21). The diaphragms (25) are positioned at the location of the corresponding air inlet (21) and connected to the one-way valve mounting base (20) to control the one-way flow of the corresponding air inlet (21).

9. The diaphragm air pump according to claim 1, characterized in that, The number of the connection channels (101) is configured to be four.

10. The diaphragm air pump according to claim 1, characterized in that, The number of airbags (31) is configured to be four.

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