Air duct mechanism, air pump, inflation device, and air pump control method

Abstract

The embodiments of the present invention relate to an inflation device, and more particularly to an air duct mechanism, an air pump, an inflation device, and a control method for the air pump, wherein the air duct mechanism comprises: an outer shell, an inner shell; the outer shell is provided with an air suction member and an air outlet member around its circumference; the inner shell is provided inside the outer shell, the inner shell and the outer shell are rotatable relative to each other, and the inner shell is provided with an air outlet and an air suction member around its circumference; when the inner shell and the outer shell rotate relative to each other to a first preset position, the air outlet and the air suction member are connected, and the air suction member and the air outlet are disconnected; when the inner shell and the outer shell rotate relative to each other to a second preset position, the air suction member and the air outlet are connected, and the air outlet and the air suction member are disconnected. Compared with the prior art, the air duct mechanism can facilitate the operation of the air pump while eliminating the mechanism for resetting the air suction member and the air outlet member, thereby reducing the volume of the air pump.

Description

Technical Field

[0001] Embodiments of the present invention relate to an inflation device, and more particularly to an air duct mechanism, an air pump, an inflation device, and a method for controlling the air pump. Background Art

[0002] In people's daily life and work, inflatable products are popular for their convenience and easy storage. In order to achieve rapid inflation, products such as inflatable mattresses and air cushions all require air pumps. Currently, air pumps on the market are generally divided into external and built-in types. External air pumps require people to carry them separately from the inflatable products, and have certain limitations in use. Manual squeezing operation is required for exhausting. Therefore, some large inflatable products are usually equipped with built-in electric air pumps. Existing built-in air pumps have air ports for inflation and deflation respectively.

[0003] However, the existing built-in air pumps are relatively complex in structure and relatively large in size, and are also inconvenient to operate. For example, the inventor previously designed an inflation air pump, the air intake and exhaust buttons cannot be switched, and need to be reset by a reset mechanism before the air intake or exhaust operation can be performed, which brings inconvenience to the operation. At the same time, adding a reset mechanism also makes the air pump larger in size, which does not meet the requirements of miniaturization and intelligence. Summary of the Invention

[0004] The purpose of the embodiments of the present invention is to design an air duct mechanism, an air pump, an inflatable device and a control method for the air pump, which can realize the inflation and exhaust of the inflatable device through an air pump while greatly reducing the volume of the air pump.

[0005] In order to achieve the above objectives, an embodiment of the present invention provides an air duct mechanism, comprising:

[0006] The shell is provided with an air suction member and an air discharge member around its circumference;

[0007] The inner shell is arranged in the outer shell and is rotatable relative to the outer shell; the inner shell is provided with an air outlet and an air intake around its circumference;

[0008] When the inner shell and the outer shell rotate relative to each other to a first preset position, the air outlet is connected to the air suction member, and the air suction port is disconnected from the air outlet member;

[0009] When the inner shell and the outer shell rotate relative to each other to a second preset position, the air suction port is connected to the air outlet member, and the air outlet is disconnected from the air suction member.

[0010] In addition, an embodiment of the present invention further provides an air pump, characterized in that it includes:

[0011] An air duct mechanism as described above;

[0012] a fan assembly, disposed in the inner shell;

[0013] Wherein, when the inner shell and the outer shell rotate relative to each other to a first preset position, the fan assembly is used to perform an air suction operation through the air suction member;

[0014] When the inner shell and the outer shell are rotated relative to each other to a second preset position, the fan assembly is used to perform an exhaust operation through the air outlet member.

[0015] In addition, an embodiment of the present invention further provides an inflation device, comprising:

[0016] The device body has a cavity;

[0017] The air pump as described above is arranged on the device body; the air pump is used to inflate or exhaust air into the cavity.

[0018] In addition, an embodiment of the present invention further provides a method for controlling an air pump, which is applied to the air duct mechanism described above, to the air pump described above, or to the inflatable device described above, and includes the following steps:

[0019] When the air pump is inflated, the inner shell and the outer shell are driven to rotate relative to each other to a first preset position, so that the air outlet of the air pump is connected to the air suction member, and the air suction port is disconnected from the air outlet member;

[0020] controlling the fan assembly of the air pump so that the fan assembly is inflated through the air suction member;

[0021] Alternatively, when the air pump is exhausting, the inner shell and the outer shell are driven to rotate relative to each other to a second preset position, so that the air suction port of the air pump is connected to the air outlet member, and the air outlet is disconnected from the air suction member;

[0022] The fan assembly of the air pump is controlled to enable the fan assembly to exhaust air through the air outlet member.

[0023] Compared to the prior art, the embodiments of the present invention are different in that the air duct mechanism includes an outer shell and an inner shell disposed within the outer shell, and the outer shell and the inner shell are rotatable relative to each other. When the outer shell and the inner shell are rotated relative to each other to a first preset position, the air outlet is connected to the air suction member. At this time, the air suction port can be disconnected from the air outlet member, thereby allowing the fan assembly to achieve the air suction operation of the air pump through the air suction member. When the inner shell and the outer shell are rotated relative to each other to a second preset position, the air suction port is connected to the air outlet member. At this time, the air outlet can be disconnected from the air suction member, thereby allowing the fan assembly to achieve the air exhaust operation of the air pump through the air outlet member. Therefore, while facilitating the operation of the air pump, the mechanism for resetting the air suction member and the air outlet member can be omitted, thereby reducing the volume of the air pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the axial side of the air pump in some embodiments of the present invention;

[0025] Figure 2 for Figure 1 Schematic top view of

[0026] Figure 3 for Figure 2 Cross-sectional view at the middle BB;

[0027] Figure 4 for Figure 2 Cross-sectional view at AA in the middle;

[0028] Figure 5 This is a schematic diagram of the assembly of an air pump in some embodiments of the present invention;

[0029] Figure 6 This is an axial schematic diagram of another air pump in some embodiments of the present invention;

[0030] Figure 7 This is a schematic top view of the air duct mechanism in some embodiments of the present invention;

[0031] Figure 8 This is a schematic diagram of the inner shell during rotation in some embodiments of the present invention;

[0032] Figure 9 This is a schematic top view of the air duct mechanism when both the limiting member and the limiting groove are provided in some embodiments of the present invention;

[0033] Figure 10 for Figure 9 A partial enlarged view of the middle C part;

[0034] Figure 11 This is a top view of the air duct mechanism when two limiting members are provided and one limiting groove is provided in some embodiments of the present invention;

[0035] Figure 12 This is a schematic axial view of a fan assembly in some embodiments of the present invention;

[0036] Figure 13 This is a schematic diagram of the axial side of the air outlet member body in some embodiments of the present invention;

[0037] Figure 14 This is a schematic diagram of the axial side of the air suction member body in some embodiments of the present invention;

[0038] Figure 15 This is a system module block diagram of an air pump in some embodiments of the present invention;

[0039] Figure 16 This is an axial schematic diagram of an inflatable device in some embodiments of the present invention.

[0040] Figure 17 This is a flow chart of a method for controlling the air pump when the air pump is inflating in some embodiments of the present invention;

[0041] Figure 18 This is a flow chart of a method for controlling an air pump when the air pump is exhausting in some embodiments of the present invention. DETAILED DESCRIPTION

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will appreciate that many technical details are provided in the embodiments of the present invention to help readers better understand the present application. However, even without these technical details and the various variations and modifications based on the following embodiments, the technical solutions claimed in the present application can still be implemented.

[0043] Example 1

[0044] The first embodiment of the present invention relates to an air duct mechanism, such as Figure 7 As shown, the air duct mechanism 1 comprises an outer shell 11 and an inner shell 12. The outer shell 11 is provided with an air suction member 13 and an air discharge member 14 around its circumference.

[0045] Among them, combined Figure 3 and Figure 4 As shown, the inner shell 12 is disposed in the outer shell 11 , and the inner shell 12 and the outer shell 11 are rotatable relative to each other. At the same time, the inner shell 12 is provided with an air outlet 121 and an air intake 122 around its circumference.

[0046] In addition, combined Figure 2As shown, when the inner shell 12 and the outer shell 11 rotate relative to each other to a first preset position, the air outlet 121 is connected to the air suction member 13, and the air suction port 122 is disconnected from the air outlet member 14. Next, when the inner shell 12 and the outer shell 11 rotate relative to each other to a second preset position, the air suction port 122 is connected to the air outlet member 14, and the air outlet 121 is disconnected from the air suction member 13.

[0047] It is not difficult to see from the above that the air duct mechanism includes: an outer shell 11, an inner shell 12 arranged in the outer shell 11, and the outer shell 11 and the inner shell 12 are rotatable relative to each other, and when the outer shell 11 and the inner shell 12 are rotated relative to each other to a first preset position, the air outlet 121 is connected to the air suction member 13, at which time the air suction port 122 can be disconnected from the air outlet member 14, so that the fan assembly 2 can achieve the air suction operation of the air pump through the air suction member 13. When the inner shell 12 and the outer shell 11 are rotated relative to each other to a second preset position, the air suction port 122 is connected to the air outlet member 14, at which time the air outlet 121 can be disconnected from the air suction member 13, so that the fan assembly 2 can achieve the air exhaust operation of the air pump 1 through the air outlet member 14. Therefore, while facilitating the operation of the air pump 1, the mechanism for resetting the air suction member and the air outlet member can be omitted, thereby reducing the volume of the air pump.

[0048] And, in some embodiments, as Figure 3 、 Figure 4 and Figure 5 As shown, the outer shell 11 and the inner shell 12 are rotatable relative to each other with the same preset axis as the pivot axis, and the outer shell 11 and the inner shell 12 are rotated relative to each other to a first preset position, which is opposite to the direction when they are rotated relative to each other to a second preset position. For example, in order to achieve relative rotation between the outer shell 11 and the inner shell 12, in some embodiments, such as Figure 3 and Figure 4 As shown, the outer shell 11 is fixed, and the inner shell 12 is rotatable relative to the outer shell 11, or the inner shell 12 is fixed, and the outer shell 11 is rotatable relative to the inner shell 12. Of course, in some embodiments, the outer shell 11 or the inner shell 12 can also rotate in the same direction to the first preset position and the second preset position in sequence, that is, the outer shell 11 and the inner shell 12 rotate relative to each other to the first preset position in the same direction as when they rotate relative to each other to the second preset position.

[0049] However, as a preferred solution, in some embodiments, as Figure 1 and Figure 2As shown, the air duct mechanism 1 also includes: a rotating member 18, which is connected to the inner shell 12 along a preset axial direction, so that the rotating member 18 can be used to drive the inner shell 12 to rotate relative to the outer shell 11. The rotating member 18 can facilitate the user to rotate the inner shell 12, making it more convenient for the user to inflate and exhaust the air pump. Of course, in other embodiments, the rotating member 18 can also be connected to the outer shell 11 along a preset axial direction, so that the rotating member 18 can be used to drive the outer shell 11 to rotate relative to the inner shell 12. And, it should be noted that in order to further facilitate the user to operate the rotating member 18, in other embodiments, such as Figure 6 As shown, the rotating member 18 is further provided with a hand-locking slot 181 for the user to lock his hand, which makes it easier for the user to rotate the rotating member 18. Of course, in other embodiments, the relative rotation of the inner shell 12 and the outer shell 11 can be achieved by manually rotating the inner shell 12 or the outer shell 11.

[0050] Specifically, in some embodiments, Figure 1 、 Figure 2 and Figure 7 As shown, both the air suction member 13 and the air outlet member 14 are partially exposed within the outer shell 11. Therefore, when the inner shell 12 and the outer shell 11 are rotated relative to each other to a first preset position, the air suction member 13 interfaces with the air outlet 121 of the inner shell 12, allowing the air duct mechanism to draw air through the air suction member 13. When the inner shell 12 and the outer shell 11 are rotated relative to each other to a second preset position, the air outlet member 14 interfaces with the air suction port 122 of the inner shell 12, allowing the air duct mechanism to exhaust air through the air outlet member 14.

[0051] In addition, it is worth mentioning that in this embodiment, Figure 2 and Figure 4 As shown, the inner shell 12 includes: a first shell bottom 127, a first shell wall 126, an air outlet channel 123 and an air suction channel 124. Figure 3 、 Figure 5 As shown, the first shell bottom 127 has a first upper surface 1271 and a first lower surface 1272 opposite to the first upper surface 1271, and the first shell wall 126 is arranged around the circumference of the first shell bottom 127, so that the first shell wall 126 can surround the first shell bottom 127 to form a first cavity 125, and the first cavity 125 is used to set the fan assembly 2 of the air pump. In addition, as shown Figure 3 and Figure 5 As shown, the air outlet channel 123 is formed by a portion of the first shell wall 126 protruding in a direction away from the first cavity 125, and combined with Figure 8As shown, an air outlet 121 is provided at one end of the air outlet channel 123 away from the first cavity 125 . At the same time, an air suction channel 124 is formed by a portion of the first shell wall 126 protruding in a direction away from the first cavity 125 , and an air suction port 122 is provided at one end of the air suction channel 124 away from the first cavity 125 .

[0052] In addition, in this embodiment, if Figure 3 and Figure 4 As shown, the outer shell 11 includes a second shell bottom 111 and a second shell wall 112. The second shell bottom 111 has a second upper surface 1111 and a second lower surface 1112 opposite the second upper surface 1111. The second shell wall 112 is arranged around the circumference of the second shell bottom 111, so that the second shell wall 112 can surround the second shell bottom 111 to form a second cavity 113. At the same time, the inner shell 12 is rotatably disposed in the second cavity 113. Finally, the air suction member 13 and the air discharge member 14 are also disposed on the second shell wall 112.

[0053] In addition, in some embodiments, in order to realize the installation of the air suction member 13 on the second shell wall 112, as shown in FIG. Figure 1 As shown, the air suction member 13 at least includes: an air suction member body 131. The air suction member body 131 is elastically retractable and is arranged on the second shell wall 112, and is combined with Figure 14 As shown, the air suction member body 131 has an air inlet side 1312 and at least one air outlet 1311 connected to the air inlet side 1312, wherein the air suction member body 131 has an air inlet side 1312 and at least one air outlet 1311 connected to the air inlet side 1312. Figure 3 As shown, each air outlet 1311 and air inlet side 1312 are located in the second cavity 113, and, as shown in FIG. Figure 8 As shown, the air inlet side 1312 is used to connect with the air outlet 121 of the air outlet channel 123 when the inner shell 12 and the outer shell 11 rotate relative to each other to a first preset position.

[0054] Furthermore, in order to fix the air suction member body 131 on the housing 11, in some embodiments, as shown in FIG. Figure 6 、 Figure 8 and Figure 14 As shown, the air suction member 13 further includes: an air suction cover 132, and the air suction cover 132 is sleeved on the first end of the air suction member body 131 away from the air inlet side 1312, and the air suction cover 132 also detachably fixes the air suction member body 131 to the housing 11. Specifically, as shown in FIG. Figure 3 and Figure 5 As shown, a plurality of connecting posts 15 are provided on the outer surface of the second shell wall 112 of the housing 11, and a threaded hole (not shown) is provided on the side of each connecting post 15 away from the second shell wall 112. Figure 6 、 Figure 8 and Figure 14As shown, the air suction hood 132 includes: a hood body 1321 that is sleeved on the first end of the air suction member body 131 away from the air inlet side 1312, and a plurality of connecting protrusions 1322 that are circumferentially arranged around the hood body 1321, and the number of connecting protrusions 1322 is the same as the number of connecting columns 15, and is uniquely corresponding, and each connecting protrusion 1322 is respectively provided with a connecting hole 1323, and each connecting column 15 is respectively inserted into the uniquely corresponding connecting hole 1323 of each connecting protrusion 132, so that during installation, the threaded hole of each connecting column 15 can be screwed into a bolt, thereby realizing the installation and fixation of the air suction hood 132 on the outer shell 11.

[0055] Similarly, in order to enable the air outlet member 14 to be installed on the second shell wall 112, as shown in FIG. Figure 6 、 Figure 8 and Figure 13 As shown, the air outlet member 14 at least includes: an air outlet member body 141. The air outlet member body 141 is elastically retractable and is disposed on the second shell wall 112 of the housing 11. Figure 13 As shown, the air outlet body 141 has an air outlet side 1412 and at least one air inlet 1411 connected to the air outlet side 1412, wherein the air outlet body 1412 is connected to the air outlet side 1412. Figure 2 As shown, each air inlet 1411 and air outlet 1412 are located in the second cavity 113, and as shown in FIG. Figure 2 As shown, the air outlet side 1412 is used to dock with the air suction port 122 of the air suction channel 124 when the inner shell 12 and the outer shell 11 rotate relative to each other to the second preset position.

[0056] Furthermore, in order to achieve the fixation of the air outlet body 141 on the housing 11, in some embodiments, as shown in FIG. Figure 6 、 Figure 8 and Figure 13 As shown, the air outlet member 14 further includes an air outlet cover 142, which is sleeved on one end of the air outlet member body 141 away from the air outlet side 1412, and the air outlet cover 142 also detachably fixes the air outlet member body 141 to the housing 11. Specifically, as shown in FIG. Figure 1 and Figure 6 As shown, a plurality of connecting posts 16 are provided on the outer surface of the second shell wall 112 of the housing 11, and a threaded hole (not shown) is provided on the side of each connecting post 16 away from the second shell wall 112. Figure 6 、 Figure 8 and Figure 13As shown, the air outlet cover 142 includes: a cover body 1421 that is sleeved on one end of the air outlet part body 141 away from the air outlet side 1412, and a plurality of connecting protrusions 1422 arranged circumferentially around the cover body 1421, and the number of connecting protrusions 1422 is the same as the number of connecting columns 16, and is uniquely corresponding, and each connecting protrusion 1422 is respectively provided with a connecting hole 1423, and each connecting column 16 is respectively inserted into the uniquely corresponding connecting hole 1423 of each connecting protrusion 1422, so that during installation, the threaded hole of each connecting column 16 can be screwed into a bolt, thereby realizing the installation and fixation of the air outlet cover 142 on the outer shell 11.

[0057] In the above embodiment, the telescopic structure of the air outlet member 14 and the air suction member 13 is illustrated. In the natural state, that is, when not under pressure, the air inlet side 1312 and the air outlet 1311, and the air outlet side 1412 and the air inlet 1411 are located within the second cavity 113. In other embodiments, the telescopic structure may also adopt a valve-like structure, for example, the air inlet side 1312 is a hollow structure, and the air inlet side 1312 is squeezed and contracted, so that the air outlet is connected to the air inlet side. After the pressure is released, it is reset by the restoring force of the spring. In this case, the air inlet side is within the second cavity 113, and the air outlet is outside the second cavity 113. Similarly, the air outlet member may also adopt such a structure.

[0058] However, in order to improve the rotation performance of the outer shell 11 and the inner shell 12 when they rotate relative to each other, as a preferred solution, in some embodiments, such as Figure 2 As shown, the second shell wall 112 of the housing 11 partially protrudes in a direction away from the second cavity 113, so that the second cavity 113 partially forms a first sliding groove 114 for the air outlet channel 123 to rotate, and another part forms a second sliding groove 115 for the air suction channel 124 to rotate. At the same time, as shown Figure 3 As shown, part of the second shell wall 112 forms a first flange 1121 for receiving the air outlet channel 123, and another part forms a second flange 1122 for receiving the air suction channel 124. It is not difficult to see that the sliding of the air outlet channel 123 in the first chute 114 and the sliding of the air suction channel 124 in the second chute 115 guide the relative rotation of the inner shell 12 and the outer shell 11. At the same time, the first flange 1121 and the second flange 1122 respectively receive the air outlet channel 123 and the air suction channel 124, which ensures that the outer shell 11 has sufficient supporting force on the inner shell 11, thereby ensuring the reliability of the outer shell 11 and the inner shell 12 when rotating relative to each other.

[0059] Furthermore, in some embodiments, Figure 1 and Figure 2As shown, a portion of the first chute 114 protrudes in a direction away from the second cavity 113 to form an air outlet groove 117 connected to the first chute 114, and the air outlet groove 117 also extends in a direction away from the second shell bottom 111, so that a notch 1171 of the air outlet groove 117 is formed on the side of the second shell wall away from the second shell bottom 111. Similarly, as Figure 1 and Figure 2 As shown, a portion of the second chute 115 protrudes away from the second cavity 113, forming an air inlet groove 116 connected to the second chute 115. The air inlet groove 116 also extends away from the second shell bottom 111, so that a notch 1161 of the air inlet groove 116 is formed on the side of the second shell wall 112 away from the second shell bottom 111.

[0060] It is not difficult to find that when the air outlet 121 of the air outlet channel 123 is connected to the air inlet side 1312 of the air suction member body 131, the air outlet 121 of the air outlet channel 123 is connected to the air inlet side 1312 of the air suction member body 131. Figure 2 As shown, when the inner shell 12 and the outer shell 11 rotate to the first preset position, the air inlet groove 116 is connected to the air suction port 122 of the air suction channel 124, and the air inlet groove 116 is connected to the air suction port 122 of the air suction channel 124. Figure 14 As shown, once the fan assembly 2 is started, the air flow can enter the suction channel 124 through the air inlet slot 1161, and then enter the suction member 13 through the air inlet and outlet sides 213 of the fan assembly 2 and the air outlet channel 123 in sequence, and finally be supplied to the device body 8 through the air outlet 1311 of the air suction member 13, thereby achieving the inflation of the device body 8. Conversely, when the air inlet 122 of the suction channel 124 is connected to the air outlet side 1412 of the air outlet member body 141, the air flow is connected to the suction member 13 through the air outlet 1311 of the air suction member 13, thereby achieving the inflation of the device body 8. Figure 2 As shown, when the inner shell 12 and the outer shell 11 rotate to the second preset position, the air outlet slot 117 is connected to the air outlet 121 of the air outlet channel 123, and the air outlet 121 is connected to the air outlet 123. Figure 13 As shown, once the fan assembly 2 is started, the gas in the equipment body 8 can enter the suction channel 124 from the air inlets 1411 of the air outlet member 14 and through the air outlet side 1412, and then enter the air outlet groove 117 through the air inlet and outlet sides 213 of the fan assembly 2 and the air outlet channel 123 in sequence, and finally exhaust the equipment body 8 through the air outlet groove 117.

[0061] Furthermore, as a preferred solution, in some embodiments, the air suction member body 131 and the air outlet member body 141 are both flexible resilient members. Alternatively, the air suction member body 131 and the air outlet member body 141 are both retractable members provided with elastic members. For example, a portion of the air suction member body 131 and the air outlet member body 141 can be made into a spring structure, so that when the inner shell 12 and the outer shell 11 rotate relative to each other to the first preset position or the second preset position, the air suction member body 131 and the air outlet member body 141 can generate a certain deformation along their own axis direction by virtue of the rebound characteristics of the air suction member body 131 and the air outlet member body 141, thereby ensuring smooth docking between the air suction member body 131 and the air outlet channel 123, and between the air outlet member body 141 and the air suction channel 124, while also ensuring the sealing performance after docking between the air suction member body 131 and the air outlet channel 123, and between the air outlet member body 141 and the air suction channel 124.

[0062] In addition, in other embodiments, Figure 1 and Figure 8 、 Figure 14 As shown, the air suction member body 131 is partially protruded around its circumference to form a first clamping protrusion 133, and, in combination with Figure 3 As shown, the first engaging protrusion 133 abuts against the side of the second shell wall 112 away from the second cavity 113, and a first engaging groove 134 is provided on the side where the first engaging protrusion 133 abuts against the second shell wall 112, and a first sealing member 135 abutting against the shell 11 is provided in the first engaging groove 134. Figure 1 and Figure 8 As shown, the air outlet member body 141 partially protrudes around its circumference to form a second snap-fitting protrusion 143, and the second snap-fitting protrusion 143 abuts against the side of the second shell wall 112 away from the second cavity 113. A second snap-fitting groove 144 is provided on the side where the second snap-fitting protrusion 143 abuts against the second shell wall 112, and a second sealing member 145 abutting against the outer shell 11 is provided in the second snap-fitting groove 144. It is not difficult to see that the air suction member body 131 and the air outlet member body 141 can be installed and positioned on the second shell wall 112 of the outer shell 11 respectively by means of the first snap-fitting protrusion 133 and the second snap-fitting protrusion 143. At the same time, the sealing performance of the air suction member body 131 and the air outlet member body 141 during installation can be ensured respectively by means of the first sealing member 135 and the second sealing member 145. It should be noted that in some embodiments, such as Figure 14 As shown, two first engaging protrusions 133 may also be provided. In this case, if the air suction member body 131 is a telescopic member provided with an elastic member, the spring structure may be provided between the two first engaging protrusions 133, thereby enabling the air suction member body 131 to have good rebound and telescopic properties. Similarly, in other embodiments, such as Figure 13As shown, two second clamping protrusions 143 can also be provided. In this case, if the air outlet body 141 is a telescopic component provided with an elastic component, the spring structure can be set between the two second clamping protrusions 143, so that the air outlet body 141 can have good rebound and telescopic characteristics.

[0063] In addition, in order to further facilitate the relative rotation of the inner shell 12 and the outer shell 11, as shown in FIG. Figure 8 and Figure 14 As shown, the air inlet side 1312 of the air suction member body 131 has a first inclined surface 1313, and the air outlet channel 123 is provided with a first guide surface 1231 having the same inclination direction as the first inclined surface 1313. Therefore, when the inner shell 12 and the outer shell 11 rotate toward the first preset position, the first guide surface 1231 and the first inclined surface 1313 are in contact with each other. Through the contact between the first guide surface 1231 and the first inclined surface 1313, the relative rotation of the inner shell 12 and the outer shell 11 can be guided, reducing the resistance of the inner shell 12 during rotation, thereby further facilitating the relative rotation of the inner shell 12 and the outer shell 11.

[0064] Similarly, in order to further facilitate the relative rotation of the inner shell 12 and the outer shell 11, as shown in FIG. Figure 8 and Figure 13 As shown, the air outlet side 1412 of the air outlet member body 141 has a second inclined surface 1413, and the air suction channel 124 is provided with a second guide surface 1241 that is inclined in the same direction as the second inclined surface 1413. When the inner shell 12 and the outer shell 11 rotate toward the second preset position, the second guide surface 1241 and the second inclined surface 1413 abut against each other. The abutment of the second guide surface 1241 and the second inclined surface 1413 guides the relative rotation of the inner shell 12 and the outer shell 11, reducing the resistance of the inner shell 12 during rotation, thereby further facilitating the relative rotation of the inner shell 12 and the outer shell 11.

[0065] Furthermore, as a preferred embodiment, in some embodiments, such as Figure 10 and Figure 11 As shown, the air duct mechanism 1 further includes: a limiting component 17, which is used to limit the inner shell 12 or the outer shell 11 when the inner shell 12 and the outer shell 11 rotate relative to each other.

[0066] Specifically, if Figure 10 and Figure 11As shown, the limiting assembly 17 includes at least one limiting member 171 and at least one limiting groove 172. The limiting member 171 is disposed on the second upper surface 1111 of the second housing bottom 111, or on the first lower surface 1272 of the first housing bottom 127. Furthermore, when the limiting member 171 is disposed on the second upper surface 1111 of the second housing bottom 111, the limiting groove 172 is disposed on the first housing bottom 127. When the limiting member 171 is disposed on the first upper surface 1271 of the first housing bottom 127, the limiting groove 172 is disposed on the second housing bottom 111. The limiting groove 172 is formed by bending and extending about a predetermined axis.

[0067] Among them, Figure 10 and Figure 11 As shown, the stopper 171 is also embedded in the stopper groove 172. The stopper 171 is configured to slide along the stopper groove 172 when the outer shell 11 and the inner shell 12 rotate relative to each other. Furthermore, when the inner shell 12 and the outer shell 11 rotate relative to each other to a first predetermined position, the stopper 171 triggers the first switch module 3 of the fan assembly 2, causing the fan assembly 2 to perform an air intake operation. Furthermore, when the inner shell 12 and the outer shell 11 rotate relative to each other to a second predetermined position, the stopper 171 triggers the second switch module 4 of the fan assembly 2, causing the fan assembly 2 to perform an air exhaust operation.

[0068] For example, in some embodiments, Figure 9 and Figure 10 As shown, the inner shell 12 is rotatable, while the outer shell 11 is fixed, and a limit member 171 and a limit groove 172 can be set respectively, that is, the limit member 171 is set on the second shell bottom 111 of the outer shell 11, and the limit groove 172 is set on the first shell bottom 127 of the inner shell 12. At the same time, the first switch module 3 and the second switch module 4 are respectively arranged relative to each other along the two ends of the limit groove 172. Therefore, when the inner shell 12 is rotated to the first preset position relative to the outer shell 11, the limit member 171 can directly abut the first switch module 3, so that the first switch module 3 can be triggered by the limit member 171, and when the first switch module 3 is triggered, it can output a first electrical signal to the fan assembly 2, and when the fan assembly 2 receives the first electrical signal, it realizes the air pump suction. When the inner shell 12 rotates to the second preset position relative to the outer shell 11, the limit member 171 can directly abut the second switch module 4, so that the second switch module 4 can be triggered by the limit member 171. When the second switch module 4 is triggered, it can output a second electrical signal to the fan assembly 2. When the fan assembly 2 receives the second electrical signal, it realizes the exhaust of the air pump.

[0069] However, as an alternative, in some embodiments, as Figure 11As shown, two limiting members 171 may also be provided, and one limiting member 171 is embedded in the limiting groove 172, while the other limiting member 171 is embedded in the other limiting groove 172. In addition, the first switch module 3 is arranged toward the end close to one of the limiting grooves 172, and the second switch module 4 is arranged toward the other end close to the limiting groove 172. Of course, in some embodiments, two limiting members 171 may also be arranged in one limiting groove 172. Therefore, when the inner shell 12 rotates to the first preset position relative to the outer shell 11, one of the limiting members 171 can trigger the first switch module 3, so that the first switch module 3 can output a first electrical signal to the fan assembly 2, and when the inner shell 12 rotates to the second preset position relative to the outer shell 11, the other limiting member 171 can trigger the second switch module 4, so that the second switch module 4 can output a second electrical signal to the fan assembly 2.

[0070] Furthermore, it should be noted that, it is not difficult to see from the above solution that, since the limiting member 171 is provided on the upper surface of the second shell bottom 1111 of the outer shell 11, when the inner shell 11 rotates relative to the outer shell 12, the limiting member 171 is fixed, and in order to ensure that the limiting member 171 can trigger the first switch module 3 or the second switch module 4, as shown in FIG. Figure 10 and Figure 11 As shown, the first switch module 4 and the second switch module 3 can be arranged on the first upper surface 1271 of the first shell bottom 127 of the inner shell 12, so that the first switch module 3 and the second switch module 4 can be displaced when the inner shell 11 rotates relative to the outer shell 12, thereby realizing the triggering of the first switch module 3 or the second switch module 4 by the limit member 171. Of course, in other embodiments, such as Figure 12As shown, the first switch module 3 and the second switch module 4 can also be arranged at the bottom of the fan assembly 2. At the same time, the limiting member 171 can also be arranged on the first shell bottom 127 of the inner shell 12, and it is ensured that the limiting member 171 is partially exposed to the first upper surface 1271 of the first shell bottom 127, and the other part is exposed to the first lower surface 1272 of the first shell bottom 127. In addition, the limiting groove 172 can be provided on the second shell bottom 111 of the outer shell 11, so that the part of the limiting member 171 exposed to the first lower surface 1272 of the first shell bottom 127 can be embedded in the limiting groove 172. Therefore, When the inner shell 11 rotates relative to the outer shell 12, the limiter 171 can also rotate along with the inner shell 11, while the first switch module 3 and the second switch module 4 are fixed at this time. Therefore, when the inner shell 12 rotates to the first preset position relative to the outer shell 11, the limiter 171 can trigger the first switch module 3, so that the first switch module 3 can output a first electrical signal to the fan assembly 2. When the inner shell 12 rotates to the second preset position relative to the outer shell 11, the limiter 171 can trigger the second switch module 4, so that the second switch module 4 can output a second electrical signal to the fan assembly 2. It can be seen that the specific implementation structure of the fan assembly 2 operating by the relative rotation of the inner shell 12 and the outer shell 11 can have a variety of modified designs based on the above embodiment, and this application will not describe them one by one.

[0071] In addition, as a preferred solution, in some embodiments, as Figure 7 As shown, the limiting assembly 17 further includes: at least one protrusion 173 and at least one slide groove 174. The protrusion 173 can be disposed on the first lower surface 1272 of the first shell bottom 127 of the inner shell 12, while the slide groove 174 is disposed on the second shell bottom 111 of the outer shell 11. Furthermore, the protrusion 173 can be embedded in the slide groove 174. Of course, in other embodiments, the slide groove 174 can also be disposed on the first shell bottom 127 of the inner shell 12, while the protrusion 173 can be disposed on the second upper surface 1111 of the second shell bottom 1111 of the outer shell 11. It is not difficult to see that when the inner shell 12 and the outer shell 11 rotate relative to each other, the protrusion 173 can also slide along the slide groove 174. The cooperation between the protrusion 173 and the slide groove 174 can guide the relative rotation of the inner shell 12 and the outer shell 11, thereby further improving the rotational performance of the inner shell 12 and the outer shell 11.

[0072] It should be noted that the first electrical signal and the second electrical signal can be the same or different electrical signals. The above embodiment only illustrates the relative rotation of the outer shell and the inner shell to achieve suction or exhaust, and does not limit the installation direction of the air duct mechanism. For example, the inner shell and the outer shell can rotate horizontally or vertically. At the same time, the positions of the air suction member 13 and the air outlet member 14 are not limited, that is, the air suction member 13 can also be above and the air outlet member 14 can also be below. The above embodiment can achieve the switching of the air suction duct 124 and the air outlet channel 123 through the relative rotation of the inner shell 12 and the outer shell 11.

[0073] Example 2

[0074] A second embodiment of the present invention relates to an air pump, such as Figure 3 、 Figure 4 、 Figure 5 and Figure 7 As shown, the air pump includes: the air duct mechanism 1 and the fan assembly 2 as described in the first embodiment, wherein the fan assembly 2 is disposed within the inner housing 12 of the air duct mechanism 1, and when the inner housing 12 and the outer housing 11 rotate relative to each other to a first preset position, the fan assembly 2 can perform an air suction operation through the air suction member 13. When the inner housing 3 and the outer housing 1 rotate relative to each other to a second preset position, the fan assembly 2 can perform an air exhaust operation through the air discharge member 14. The air duct mechanism 1 adopts any specific implementation structure in the first embodiment.

[0075] It is not difficult to see from the above that the air duct mechanism includes: an outer shell 11, an inner shell 12 disposed within the outer shell 11, and the outer shell 11 and the inner shell 12 are rotatable relative to each other, and when the outer shell 11 and the inner shell 12 are rotated relative to each other to a first preset position, the air outlet 121 is connected to the air suction member 13, at which time the air suction port 122 can be disconnected from the air outlet member 14, so that the fan assembly 2 can achieve the air suction operation of the air pump through the air suction member 13. When the inner shell 12 and the outer shell 11 are rotated relative to each other to a second preset position, the air suction port 122 is connected to the air outlet member 14, at which time the air outlet 121 can be disconnected from the air suction member 13, so that the fan assembly 2 can achieve the air exhaust operation of the air pump 1 through the air outlet member 14. Therefore, while facilitating the operation of the air pump 1, the mechanism for resetting the air suction member 13 and the air outlet member 14 is omitted, thereby reducing the size of the air pump; and the air pump can be switched to inflate or exhaust at will by rotation, which is conducive to controlling the amount of inflation.

[0076] Specifically, in some embodiments, combined with Figure 12 As shown, the air pump further includes: a first switch module 3 and a second switch module 4, and as shown Figure 15As shown, the first switch module 3 and the second switch module 4 are both electrically connected to the fan assembly 2, so that the first switch module 3 can be used to output a first electrical signal to the fan assembly 2, and the second switch module 4 can be used to output a second electrical signal to the fan assembly 2. In addition, the first electrical signal and the second electrical signal are the same electrical signal. Therefore, when the fan assembly 2 receives the first electrical signal, the fan assembly 2 can perform an air suction operation through the air suction member 13, and when the fan assembly 2 receives the second electrical signal, the fan assembly 2 can perform an air discharge operation through the air discharge member 14.

[0077] Specifically, in some embodiments, Figure 12 As shown, the first switch module 3 and the second switch module 4 are any one of contact switches, travel switches and proximity switches. Moreover, the first switch module 3 and the second switch module 4 are arranged between the first shell bottom 127 of the inner shell 12 and the fan assembly 2. For example, the first switch module 3 and the second module 4 can be fixed to the first upper surface 1271 of the first shell bottom 127 of the inner shell 12. Moreover, the first switch module 3 can output a first electrical signal to the fan assembly 2 when the inner shell 12 and the outer shell 11 are rotated to the first preset position. At the same time, the second switch module 4 can output a second electrical signal to the fan assembly 2 when the inner shell 12 and the outer shell 11 are rotated to the second preset position. Moreover, it should be noted that in this embodiment, when the first switch module 3 and the second switch module 4 both adopt contact switches, such as spring-type contact switches, and, as Figure 10 and Figure 11 As shown, the first switch module 3 and the second switch module 4 can be respectively arranged along the two ends of the limiting groove 172, that is, the first switch module 3 is arranged toward one end close to the limiting groove 172, and the second switch module 4 is arranged toward the other end close to the limiting groove 172. Therefore, when the inner shell 12 rotates to the first preset position relative to the outer shell 11, the limiting member 171 provided on the inner shell 12 can directly move the spring plate on the first switch module 3, so that the first switch module 3 can be triggered and output a first electrical signal to the fan assembly 2, thereby achieving air suction of the fan assembly 2. Conversely, when the inner shell 12 rotates to the second preset position relative to the outer shell 11, the limiting member 171 provided on the inner shell 12 can directly move the spring plate on the second switch module 4, so that the second switch module 4 can be triggered and output a second electrical signal to the fan assembly 2, thereby achieving air exhaust of the fan assembly 2.

[0078] Alternatively, as an alternative, in other embodiments, the first switch module 3 and the second switch module 4 may both be pressable key modules, or both be touchable touch modules. Figure 2 and Figure 8As shown, a key module or a touch module is provided on the rotating member 18. By pressing the corresponding key module or touching the corresponding touch module, the first switch module 3 can be caused to output a first electrical signal to the fan assembly 2, or the second switch module 4 can be caused to output a second electrical signal to the fan assembly 2. Of course, in some embodiments, only one key module or touch module can be provided, and air suction can be achieved by pressing once, and air exhaust can be achieved by pressing twice.

[0079] In addition, in this embodiment, Figure 5 As shown, the fan assembly 2 includes: a motor housing 21, an impeller 22, a motor 23 and a main control board 24. Figure 5 and Figure 12 As shown, the motor housing 21 has an upper cavity 211, a lower cavity 212, and an air inlet and outlet side 213 connected to the lower cavity 212 along a predetermined axis. Furthermore, the impeller 22 is disposed in the lower cavity 212, while the motor 23 is disposed in the upper cavity 211. Meanwhile, the main shaft 231 of the motor 23 also extends into the lower cavity 212 and is connected to the impeller 22, so that the motor 23 can be used to drive the impeller 22 to rotate, for example, in the reverse direction, via the main shaft 231.

[0080] Finally, if Figure 15 As shown, the main control board 24 is electrically connected to the motor 23, the first switch module 3, and the second switch module 4, respectively. The main control board 24 is configured to receive a first electrical signal output by the first switch module 3 and a second electrical signal output by the second switch module 4. Furthermore, upon receiving the first electrical signal, the main control board 24 controls the motor 23 to rotate the impeller 22, thereby creating a negative pressure at the air inlet and outlet 213, thereby achieving air suction. Furthermore, upon receiving the second electrical signal, the main control board 24 controls the motor 23 to rotate the impeller 22, thereby creating a negative pressure at the air inlet and outlet 213, thereby achieving air exhaust.

[0081] In addition, in order to protect the fan assembly 2, as shown in FIG. Figure 6 As shown, the air pump of this embodiment also includes: an upper cover 6, and the upper cover 6 is arranged on the side of the outer shell 11 away from the second shell bottom 111 along the preset axial direction. The upper cover 6 is used to close the second cavity of the outer shell 11 and the first cavity 125 of the inner shell 12. The fan assembly 12 can be protected by the upper cover 6 to prevent foreign matter from entering the first cavity 125 of the inner shell 12. At the same time, the upper cover 6 is also provided with a mounting groove 61, and the rotating part 18 is rotatably arranged in the mounting groove 61. For example, the rotating part 18 and the mounting groove 61 can both be circular, so as not to interfere with the rotation of the inner shell 12 driven by the rotating part 18.

[0082] In addition, it is worth noting that, in some embodiments, a charging interface 5 may be further provided on the rotating member 18, and corresponding to the charging interface 5, such as Figure 15 As shown, the fan and component 2 also includes: a built-in power supply 25 electrically connected to the main control board 24, and the built-in power supply 25 and the charging interface 5 are also electrically connected to the main control board 24. The main control board 24 can charge the built-in power supply 25 through the charging interface 5, so that the air pump can independently realize the inflation and exhaust of the equipment body 8 without relying on an external power supply.

[0083] Example 3

[0084] A third embodiment of the present invention relates to an inflatable device, such as Figure 16 As shown, the device comprises: a device body 8 and an air pump 100 as described in the second embodiment. The device body 8 has a cavity (not shown). The air pump is mounted on the device body 8 and is used to inflate the cavity via an air suction member 13 or to exhaust the cavity via an air outlet member 14.

[0085] From the above content, it is not difficult to find that by rotating the inner shell 12 of the air duct mechanism 1, the air pump can inflate the device body 8 through the suction piece 13, and exhaust the device body 8 through the air outlet piece 14, and can easily switch the device body between inflation and exhaust. Not only can the resetting mechanism for resetting the suction piece and the air outlet piece be omitted, but the volume of the air pump is also reduced, and at the same time, the arbitrary switching of exhaust and inflation can be realized, which is convenient for controlling the air pressure in the device body 8.

[0086] Furthermore, it is worth noting that in this embodiment, Figure 14 As shown, the device body 8 is an inflatable sofa bed. Of course, in other embodiments, the device body 8 can also be any one of a sofa, a bed, an air cushion, and an air bag.

[0087] The air pump 100 described in the aforementioned embodiment is fixedly mounted in the inflatable device. By rotating the inner housing 12 and the outer housing 11 of the air duct mechanism 1 relative to each other, the same air pump can be used to inflate and exhaust the various aforementioned devices without disassembly. Therefore, the inflatable device provided in this embodiment has improved operability and superior convenience compared to prior art inflatable devices that require the removal and connection of air pump parts.

[0088] Furthermore, it should be noted that in the above-described embodiment, the air duct switching between suction and exhaust is achieved by rotation, and the main shaft 231 of the motor 23 always rotates in one direction before and after the switching, that is, the first switch module 3 and the second switch module 4, when triggered, output the same electrical signal to the main control board 24. Of course, in other embodiments, such as when the air pump 100 adopts other structures, the first switch module 3 and the second switch module 4 may output different electrical signals to the main control board 24 when triggered, thereby enabling the main shaft 231 of the motor 23 of the air pump 100 to perform suction or exhaust operations by rotating in different directions.

[0089] Example 4

[0090] The fifth embodiment of the present invention relates to a control method for an air pump, which is applied to the air duct mechanism as described in the first embodiment, to the air pump as described in the second embodiment, or to the inflatable device as described in the third embodiment. In addition, the control method of the air pump of this embodiment is that when the air pump is inflated, Figure 17 As shown, the following steps are included:

[0091] Step 1710 , driving the inner shell 12 and the outer shell 11 to rotate relative to each other to a first preset position, so that the air outlet 121 of the air pump is connected to the air suction member 13 , and the air suction port 122 is disconnected from the air outlet member 14 .

[0092] Step 1720 , controlling the fan assembly 2 of the air pump so that the fan assembly 2 is inflated through the air suction member 13 .

[0093] Alternatively, in the control method of the air pump of this embodiment, when the air pump is exhausting, Figure 18 As shown, the following steps are included:

[0094] Step 1810: drive the inner shell 12 and the outer shell 11 to rotate relative to each other to a second preset position, so that the air suction port 122 of the air pump is connected to the air outlet member 14, and the air outlet 121 is disconnected from the air suction member 13.

[0095] Step 1820 , controlling the fan assembly 2 of the air pump so that the fan assembly 2 exhausts air through the air outlet member 14 .

[0096] As can be readily seen from the foregoing, this embodiment is an embodiment of an exhaust method corresponding to the third embodiment, and can be implemented in conjunction with the third embodiment. The relevant technical details mentioned in the third embodiment are also valid in this embodiment and, to reduce repetition, are omitted here. Accordingly, the relevant technical details mentioned in this embodiment are also applicable to the third embodiment.

[0097] Those skilled in the art will appreciate that the above embodiments are specific embodiments for implementing the present invention, and that in actual applications, various changes may be made in form and detail without departing from the spirit and scope of the present invention.

Claims

1. An air duct mechanism, characterized in that: include: shell; The housing is provided with an air suction member and an air discharge member around its circumference; The inner shell is arranged in the outer shell and is rotatable relative to the outer shell; the inner shell is provided with an air outlet and an air intake around its circumference; When the inner shell and the outer shell rotate relative to each other to a first preset position, the air outlet is connected to the air suction member, and the air suction port is disconnected from the air outlet member; When the inner shell and the outer shell rotate relative to each other to a second preset position, the air suction port is connected to the air outlet member, and the air outlet is disconnected from the air suction member.

2. The air duct mechanism according to claim 1, characterized in that: The outer shell and the inner shell are rotatable relative to each other with the same preset axis as the pivot axis, and the outer shell and the inner shell are rotated relative to each other to the first preset position in the same direction or opposite direction as when they are rotated relative to each other to the second preset position.

3. The air duct mechanism according to claim 2, characterized in that: The air duct mechanism further includes: a rotating member connected to the inner shell or the outer shell along the preset axis; Wherein, when the rotating member is connected to the inner shell, the rotating member is used to drive the inner shell to rotate relative to the outer shell; When the rotating member is connected to the outer shell, the rotating member is used to drive the outer shell to rotate relative to the inner shell.

4. The air duct mechanism according to claim 1, characterized in that: The air suction member and the air discharge member are partially exposed in the housing; When the inner shell and the outer shell rotate relative to each other to a first preset position, the air suction member docks with the air outlet of the inner shell; When the inner shell and the outer shell rotate relative to each other to a second preset position, the air outlet member docks with the air suction port of the inner shell.

5. The air duct mechanism according to claim 1, characterized in that: The inner shell comprises: A first shell bottom; the first shell bottom has a first upper surface and a first lower surface opposite to the first upper surface; A first shell wall is arranged around the circumference of the first shell bottom; the first shell wall surrounds the first shell bottom to form a first cavity, and the first cavity is used to arrange a fan assembly of the air pump; An air outlet channel is formed by a portion of the first shell wall protruding in a direction away from the first cavity; the air outlet is provided at one end of the air outlet channel away from the first cavity; An air suction channel is formed by a portion of the first shell wall protruding in a direction away from the first cavity; the air suction port is provided at one end of the air suction channel away from the first cavity; The housing comprises: a second shell bottom, the second shell bottom having a second upper surface and a second lower surface opposite to the second upper surface; The second shell wall is arranged around the circumference of the second shell bottom; the second shell wall surrounds the second shell bottom to form a second cavity, and the inner shell is rotatably arranged in the second cavity; wherein the air suction member and the air outlet member are both arranged on the second shell wall.

6. The air duct mechanism according to claim 5, characterized in that: The air suction member comprises: The air suction member body is elastically retractable and disposed on the second shell wall; the air suction member body has an air inlet side and at least one air outlet connected to the air inlet side; the air inlet side is used to dock with the air outlet of the air outlet channel when the inner shell and the outer shell rotate relative to each other to a first preset position; The air outlet member includes: The air outlet member body is elastically extendable and is arranged on the second shell wall; the air outlet member body has an air outlet side and at least one air inlet connected to the air outlet side; the air outlet side is used to dock with the air suction port of the air suction channel when the inner shell and the outer shell are rotated relative to each other to the second preset position.

7. The air duct mechanism according to claim 5, characterized in that: The second cavity has a portion forming a first sliding groove for the air outlet channel to rotate, and another portion forming a second sliding groove for the air suction channel to rotate.

8. The air duct mechanism according to claim 7, characterized in that: A portion of the first chute protrudes in a direction away from the second cavity to form an air outlet groove connected to the first chute, wherein the air outlet groove further extends in a direction away from the second shell bottom, so that a side of the second shell wall away from the second shell bottom forms a notch of the air outlet groove; a portion of the second chute protrudes in a direction away from the second cavity to form an air inlet groove connected to the second chute, wherein the air inlet groove further extends in a direction away from the second shell bottom, so that a side of the second shell wall away from the second shell bottom forms a notch of the air inlet groove; When the inner shell and the outer shell are rotated relative to each other to the first preset position, the air inlet groove is communicated with the air suction port of the air suction channel; When the inner shell and the outer shell are rotated relative to each other to the second preset position, the air outlet groove is communicated with the air outlet of the air outlet channel.

9. The air duct mechanism according to claim 6, characterized in that: The air suction member body has a portion protruding around its circumference to form a first clamping protrusion, the first clamping protrusion abuts against a side of the second shell wall away from the second cavity, a first clamping groove is provided on the side where the first clamping protrusion abuts against the second shell wall, and a first sealing member abutting against the shell is provided in the first clamping groove; The air outlet body has a partial protrusion around its circumference to form a second clamping protrusion, and the second clamping protrusion abuts against the side of the second shell wall away from the second cavity. A second clamping groove is provided on the side where the second clamping protrusion abuts against the second shell wall, and a second sealing member abutting against the outer shell is provided in the second clamping groove.

10. The air duct mechanism according to claim 6, characterized in that: The air suction port of the air suction member body has a first inclined surface, and the side of the air outlet channel where the air outlet is provided has a first guide surface with the same inclination direction as the first inclined surface; wherein, when the inner shell and the outer shell rotate toward the first preset position, the first guide surface and the first inclined surface are in contact with each other; The air outlet side of the air outlet part body has a second inclined surface, and the side of the air suction channel where the air suction port is set has a second guide surface with the same inclination direction as the second inclined surface; wherein, when the inner shell and the outer shell rotate toward each other in the direction of the second preset position, the second guide surface and the second inclined surface are in contact with each other.

11. The air duct mechanism according to any one of claims 1 to 10, characterized in that: The air duct mechanism further includes: The limiting assembly is used to limit the inner shell or the outer shell when the inner shell and the outer shell rotate relative to each other.

12. The air duct mechanism according to claim 11, characterized in that: The limiting assembly includes: at least one limiting member and at least one limiting groove; The limiting member is embedded in the limiting groove, and the limiting member is used to slide along the limiting groove when the outer shell and the inner shell rotate relative to each other.

13. The air duct mechanism according to claim 12, characterized in that: When the inner shell and the outer shell rotate relative to each other to the first preset position, the limit member triggers the first switch module of the fan assembly of the air pump, so that the fan assembly performs the suction operation; When the inner shell and the outer shell rotate relative to each other to the second preset position, the limit member triggers the second switch module of the fan assembly of the air pump, so that the fan assembly performs an exhaust operation.

14. An air pump, characterized in that: include: The air duct mechanism according to any one of claims 1 to 13; a fan assembly, disposed in the inner shell; Wherein, when the inner shell and the outer shell rotate relative to each other to a first preset position, the fan assembly is used to perform an air suction operation through the air suction member; When the inner shell and the outer shell are rotated relative to each other to a second preset position, the fan assembly is used to perform an exhaust operation through the air outlet member.

15. The air pump according to claim 14, characterized in that The air pump also includes: a first switch module, electrically connected to the fan assembly, and configured to output a first electrical signal to the fan assembly; The second switch module is electrically connected to the fan assembly and is used to output a second electrical signal to the fan assembly.

16. The air pump according to claim 15, characterized in that The first switch module and the second switch module are any one of a contact switch, a travel switch and a proximity switch; Wherein, the first switch module is used to output a first electrical signal to the fan assembly when the inner shell and the outer shell rotate relative to each other to a first preset position; The second switch module is used to output a second electrical signal to the fan assembly when the inner shell and the outer shell are rotated to a second preset position relative to each other.

17. The air pump according to claim 15, characterized in that The first switch module and the second switch module are both pressable button modules, or both are touchable touch modules.

18. The air pump according to claim 15, characterized in that The fan assembly includes: The motor housing has an upper cavity, a lower cavity, and an air inlet and an air outlet connected to the lower cavity along a preset axis direction; an impeller, disposed in the lower cavity; A motor is disposed in the upper cavity; a main shaft of the motor enters the lower cavity and is connected to the impeller to drive the impeller to rotate; a main control board, electrically connected to the motor, the first switch module, and the second switch module, respectively; the main control board is used to receive the first electrical signal output by the first switch module and the second electrical signal output by the second switch module; The first electrical signal is the same as the second electrical signal. The main control board is used to drive the impeller to rotate when receiving the first electrical signal or the second electrical signal, so as to form negative pressure on the air inlet and outlet sides.

19. An inflatable device, characterized in that: include: The device body has a cavity; The air pump according to any one of claims 14 to 18 is arranged on the device body; the air pump is used to inflate or exhaust air into the cavity.

20. The inflatable device according to claim 19, wherein The device body is any one of an inflatable sofa, a bed, a sofa bed, an air cushion, and an air bag.

21. A method for controlling an air pump, characterized in that: The control method is applied to the air duct mechanism according to any one of claims 1 to 13, to the air pump according to any one of claims 14 to 18, or to the inflatable device according to any one of claims 19 to 20, and the control method comprises the following steps: When the air pump is inflated, the inner shell and the outer shell are driven to rotate relative to each other to a first preset position, so that the air outlet of the air pump is connected to the air suction member, and the air suction port is disconnected from the air outlet member; controlling the fan assembly of the air pump so that the fan assembly is inflated through the air suction member; Alternatively, when the air pump is exhausting, the inner shell and the outer shell are driven to rotate relative to each other to a second preset position, so that the air suction port of the air pump is connected to the air outlet member, and the air outlet is disconnected from the air suction member; The fan assembly of the air pump is controlled to enable the fan assembly to exhaust air through the air outlet member.

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