Reversing charge pump

Abstract

The utility model aims at providing a kind of commutating inflation and deflation pump, it includes pump shell and air-blowing component, first air port and second air port are respectively set on the lateral wall of pump shell, air-blowing component includes air-blowing barrel, fan and commutating driving part, air-blowing barrel is rotationally arranged in pump shell, air-blowing passage is set in air-blowing barrel, fan is set in air-blowing passage, fan is used to drive gas directional flow through air-blowing passage, commutating driving part is connected with air-blowing barrel, commutating driving part is used to drive air-blowing barrel rotation, and then make one end of air-blowing passage and first air port communicate, other end and second air port communicate.

Description

Technical Field

[0001] This utility model relates to the technical field of air pumps, and in particular to a reversing charging and discharging air pump. Background Technology

[0002] An air pump, as a type of blower, is commonly used to inflate inflatable products.

[0003] With technological advancements, air pumps have evolved from their traditional single inflation function to dual inflation and deflation functions. Specifically, by changing the rotation direction of the fan inside the air pump, the inflation / deflation state can be altered. This improves the inflation and deflation efficiency of inflatable products.

[0004] However, existing methods of changing the fan's rotation direction via an electronic control system have the following drawbacks: Because the fan's structure involves an impeller mounted on the output shaft, driving the gas flow, the blower's performance differs significantly between forward and reverse rotation due to its mounting location. This results in a significantly stronger blower in one direction than the other. Consequently, when this type of fan is installed in an air pump, its reverse rotation leads to a noticeable difference between the outlet and inlet air efficiencies. Therefore, to address these shortcomings, the reversing charging / discharging air pump of this application is proposed. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a reversing air pump that can effectively improve the air pump's inflation and deflation efficiency.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A reversing charge / discharge pump, comprising:

[0008] A pump casing, wherein a first air inlet and a second air inlet are respectively provided on the side wall of the pump casing; and

[0009] A blower assembly includes a blower duct, a fan, and a reversing drive. The blower duct is rotatably disposed within the pump housing, and a blower channel is formed inside the blower duct. The fan is disposed within the blower channel and is used to drive gas to flow directionally through the blower channel. The reversing drive is connected to the blower duct and is used to drive the blower duct to rotate, thereby connecting one end of the blower channel to the first air outlet and the other end to the second air outlet.

[0010] Optionally, a bearing is provided on the inner bottom wall of the pump casing, and the blower is mounted on the bearing.

[0011] Optionally, the reversing drive includes a reversing motor, which is disposed inside the pump housing, and the output shaft of the reversing motor is connected to the blower.

[0012] Optionally, the reversing drive further includes a driving gear and a driven gear, the driving gear being disposed on the output shaft of the reversing motor, the driven gear being disposed on the blower, and the driven gear meshing with the driving gear.

[0013] Optionally, a pressure plate is provided inside the pump casing, and the pressure plate abuts against the driven gear.

[0014] Optionally, a circular groove is provided on the top of the passive gear, and a star-shaped limiting part is provided on the pressure plate, the star-shaped limiting part being adapted to be accommodated in the circular groove.

[0015] Optionally, the pressure plate is provided with a number of ventilation holes.

[0016] Optionally, a circuit board is provided on the pressure plate, and the circuit board is electrically connected to the fan and the commutator motor.

[0017] Optionally, the reversing drive further includes a drive cam and a connecting rod, wherein the drive cam is disposed on the output shaft of the reversing motor, and the connecting rod is rotatably connected to the drive cam and the blower respectively.

[0018] Optionally, a hood is provided on the outer side of the first air outlet, a valve frame is slidably provided on the hood, a valve plate is provided on the valve frame, and a spring is provided between the valve frame and the hood. The spring is used to push the valve frame so that the valve plate seals the first air outlet. When one end of the blower channel is connected to the first air outlet, the blower pushes the valve frame to compress the spring.

[0019] Compared with the prior art, the present invention has at least the following advantages:

[0020] This utility model discloses a reversing charge / discharge pump, comprising a pump housing and a blower assembly. A first air inlet and a second air inlet are respectively opened on the side wall of the pump housing. The blower assembly includes a blower duct, a fan, and a reversing drive component. The blower duct is rotatably disposed within the pump housing, and a blower channel is opened within the blower duct. The fan is disposed within the blower channel and is used to drive the gas to flow directionally through the blower channel. The reversing drive component is connected to the blower duct and is used to drive the blower duct to rotate, thereby connecting one end of the blower channel to the first air inlet and the other end to the second air inlet. Thus, by using the characteristic that the gas maintains a constant flow direction within the blower duct, driven by the reversing drive component, the pump can maintain high and consistent efficiency in both charging and discharging states. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a reversing air pump according to one embodiment of the present invention;

[0023] Figure 2 for Figure 1 The diagram shows the exploded structure of the reversing charge / discharge pump.

[0024] Figure 3 for Figure 1 A schematic cross-sectional view of the reversing air pump is shown.

[0025] Figure 4 This is a schematic diagram of the shell structure according to one embodiment of the present invention;

[0026] Figure 5 This is an exploded structural diagram of a reversing air pump according to another embodiment of the present invention.

[0027] Figure 6 for Figure 5 A schematic cross-sectional view of the reversing air pump is shown.

[0028] Figure 7 This is a schematic diagram of the shell structure according to another embodiment of the present invention;

[0029] Figure 8 This is a schematic diagram of the structure of the reversing drive unit driving the blower in one embodiment of the present invention;

[0030] Figure 9 This is a schematic diagram of the structure of the pressure plate according to one embodiment of the present invention;

[0031] Figure 10 This is a schematic diagram of the sealing assembly according to one embodiment of the present invention.

[0032] Explanation of reference numerals in the attached figures:

[0033] 10. Reversing air pump; 100. Pump housing; 200. Blower assembly; 111. First air outlet; 121. Second air outlet; 210. Blower duct; 220. Fan; 230. Reversing drive component; 211. Blower duct; 240. Bearing; 231. Reversing motor; 232. Drive gear; 233. Driven gear; 250. Pressure plate; 2331. Circular groove; 251. Star-shaped limit part; 252. Ventilation hole; 260. Circuit board; 300. Sealing assembly; 310. Air cover; 320. Valve frame; 330. Valve plate; 340. Spring; 112. Slide groove; 321. Frame arm; 270. Partition plate; 271. Air passage hole; 110. Housing; 120. Panel; 130. Button. Detailed Implementation

[0034] To facilitate understanding of this utility model, a more comprehensive description will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model.

[0035] like Figures 1 to 7 As shown, a reversing air pump 10 includes a pump housing 100 and a blower assembly 200. The side wall of the pump housing 100 is provided with a first air outlet 111 and a second air outlet 121. The blower assembly 200 includes a blower duct 210, a fan 220 and a reversing drive component 230. The blower duct 210 is rotatably disposed inside the pump housing 100. A blower channel 211 is provided inside the blower duct 210. The fan 220 is disposed inside the blower channel 211 and is used to drive the gas to flow directionally through the blower channel 211. The reversing drive component 230 is connected to the blower duct 210 and is used to drive the blower duct 210 to rotate, so that one end of the blower channel 211 is connected to the first air outlet 111 and the other end is connected to the second air outlet 121.

[0036] It should be noted that the first air vent 111 and the second air vent 121 can be located at any position on the pump housing 100. In this application, the first air vent 111 is located on the side wall of the pump housing 100, and the second air vent 121 is located on the top side wall of the pump housing 100 as an example for description. The first air vent 111 and the second air vent 121 are connected through the interior of the pump housing 100. Furthermore, when the pump housing 100 is installed on the inflatable product, the first air vent 111 is connected to the interior of the inflatable product, and the second air vent 121 is connected to the outside. Furthermore, the blower duct 210 is rotatably mounted on the inner bottom wall of the pump housing 100, and the blower duct 210 has a through-type blower channel 211. The reversing drive 230 is connected to the blower 210, and the reversing drive 230 drives the blower 210 to rotate, so that one end of the blower channel 211 is coaxially and centrally connected to the first air outlet 111, and the other end is connected to the second air outlet 121 through the inside of the pump housing 100. The blower 220 is installed in the blower channel 211, and the blower 220 drives the gas to flow in a directional manner in the blower channel 211, so that the two ends of the blower channel 211 are respectively formed as the air inlet end and the air outlet end. When the air inlet end is connected to the first air outlet 111, the gas flow direction is: inflated product, first air outlet 111, blower channel 211, second air outlet 121, outside. At this time, the air pump is in the air release working state. When the air outlet is connected to the first air vent 111, the gas flow direction is: outside, second air vent 121, blower channel 211, first air vent 111, inflated product. At this time, the air pump is in the inflation working state. Thus, the reversing drive 230 drives the blower 210 to rotate. Utilizing the characteristic that the gas flow direction remains unchanged within the blower 210, the air pump can maintain high efficiency and the same efficiency whether in the inflation or deflation state.

[0037] like Figures 2 to 7 As shown, in one embodiment, a bearing 240 is provided on the inner bottom wall of the pump casing 100, and a blower 210 is provided on the bearing 240.

[0038] Specifically, a slot 113 is provided on the inner bottom wall of the pump housing 100, and the bearing 240 is fitted into the slot 113. In one embodiment, the outer side wall of the bearing 240 is glued to the inner side wall of the slot 113 by applying glue, so that the bearing 240 is fixedly installed in a fixed position on the inner bottom wall of the pump housing 100. Part of the structure of the blower 210 is inserted to be fixed on the bearing 240. In this way, the blower 210 is rotatably installed with the pump housing 100 through the bearing 240, ensuring the smooth rotation of the blower 210.

[0039] like Figure 8 As shown, in one embodiment, the reversing drive 230 includes a reversing motor 231, which is disposed inside the pump housing 100, and the output shaft of the reversing motor 231 is connected to the blower 210.

[0040] It should be noted that the commutator motor 231 is mounted on the inner wall of the pump housing 100 by screws, and the output shaft of the commutator motor 231 is fixedly connected to the blower 210. For example, the output shaft of the commutator motor 231 and the bearing 240 are coaxially distributed, and the commutator motor 231 and the bearing 240 are located on opposite sides of the blower 210. In this way, the commutator motor 231 can directly drive the blower 210 to rotate relative to the pump housing 100.

[0041] like Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, in one embodiment, the reversing drive 230 further includes a drive gear 232 and a driven gear 233. The drive gear 232 is disposed on the output shaft of the reversing motor 231, and the driven gear 233 is disposed on the blower 210, and the driven gear 233 meshes with the drive gear 232.

[0042] It should be noted that, in addition to the direct drive of the blower 210 by the output shaft of the commutator motor 231, indirect drive can also be achieved through the meshing structure of the driving gear 232 and the driven gear 233. Specifically, the driven gear 233 is mounted on the side of the blower 210 away from the bearing 240, the commutator motor 231 is distributed adjacent to the blower 210, the driving gear 232 is mounted on the output shaft of the commutator motor 231, and the driving gear 232 meshes with the driven gear 233. In this way, the commutator motor 231 drives the driving gear 232 to rotate, which in turn causes the driven gear 233 to rotate synchronously, ultimately causing the blower 210 to rotate relative to the pump housing 100 to achieve commutation. It should be noted that this design allows the commutator motor 231 and the blower 210 to be installed at the same height in the pump housing 100, so that the overall height of the pump housing 100 depends on either the blower 210 or the commutator motor 231, rather than the sum of the blower 210 and the commutator motor 231. Therefore, the thickness of the air pump can be reduced as much as possible.

[0043] like Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, in one embodiment, a pressure plate 250 is provided inside the pump housing 100, and the pressure plate 250 abuts against the driven gear 233.

[0044] It should be noted that the pressure plate 250 is located above the driving gear 232 and the driven gear 233. Several support pillars are provided on the inner bottom wall of the pump housing 100. The pressure plate 250 is fixed inside the pump housing 100 by screws passing through it and then screwing it onto each support pillar. In this way, the pressure plate 250 holds and limits the driven gear 233 and the driving gear 232, ensuring that the driving gear 232 and the driven gear 233 always maintain a meshed structure, allowing the blower 210 to rotate stably relative to the pump housing 100.

[0045] like Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 9 As shown, in one embodiment, a circular groove 2331 is provided on the top of the passive gear 233, and a star-shaped limiting part 251 is provided on the pressure plate 250, which is adapted to be accommodated in the circular groove 2331.

[0046] It should be noted that, in order to improve the smoothness of the rotation of the blower 210 and reduce the friction between the pressure plate 250 and the blower 210, a circular groove 2331 is formed on the top of the blower 210, and a star-shaped limiting part 251 is provided on the pressure plate 250. The star-shaped limiting part 251 is a star-shaped protrusion that fits snugly within the circular groove 2331. In this way, the star-shaped limiting part 251 can remain coaxial with the circular groove 2331, and the tail ends of each radial protrusion of the star-shaped limiting part 251 abut against the inner wall of the blower 210. By reducing the contact area, the friction between the star-shaped limiting part 251 and the blower 210 is reduced, preventing the pressure plate 250 from jamming the driven gear 233.

[0047] like Figure 9 As shown, in one embodiment, the pressure plate 250 has a plurality of ventilation holes 252. Thus, the second air outlet 121 is connected to the air passage 211 of the blower duct 210 through each ventilation hole 252.

[0048] like Figure 2 , Figure 3 , Figure 5 , Figure 6 As shown, in one embodiment, a circuit board 260 is provided on the pressure plate 250, and the circuit board 260 is electrically connected to the fan 220 and the commutator motor 231.

[0049] It should be noted that the fan 220 and the reversing motor 231 are driven by the circuit board 260 to rotate. Further, in one embodiment, a pressure sensor is soldered onto the circuit board 260. Thus, when the air pump is in inflation or deflation mode, the pressure sensor can detect the air pressure inside the pump housing 100 in real time, thereby enabling real-time detection of the air pressure of the inflated product. Further, in another embodiment, a timing chip is also provided on the circuit board 260. Thus, during operation, the working duration of the fan 220 can be set as needed for the reversing inflation / deflation air pump 10 of this application, making it convenient to use.

[0050] like Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 10 As shown, in one embodiment, the reversing air pump 10 further includes a sealing assembly 300. The sealing assembly 300 includes a shroud 310, a valve frame 320, a valve plate 330, and a spring 340. The shroud 310 is provided on the outer side of the first air outlet 111. The valve frame 320 is slidably provided on the shroud 310. The valve plate 330 is provided on the valve frame 320. The spring 340 is provided between the valve frame 320 and the shroud 310. The spring 340 is used to push the valve frame 320 so that the valve plate 330 seals the first air outlet 111. When one end of the blower channel 211 is connected to the first air outlet 111, the blower tube 210 pushes the valve frame 320 to compress the spring 340.

[0051] It should be noted that the valve plate 330 is used to seal the first air vent 111, ensuring that the first air vent 111 maintains good sealing performance when the air pump is not in operation. Specifically, the fan cover 310 is mounted on the outer wall of the housing 110 near the first air vent 111 by screws. The spring 340 pushes the valve bracket 320, causing the valve bracket 320 to reliably abut against the opening of the first air vent 111, thus sealing the first air vent 111 using the valve plate 330. When the air pump is operating in the inflation or deflation state, as the blower 210 rotates, the blower 210 pushes the valve bracket 320, causing the valve bracket 320 to move the valve plate 330 away from the first air vent 111, opening the first air vent 111, so that airflow passes through the first air vent 111 when the air pump is inflating or deflation.

[0052] like Figure 10 As shown, in one embodiment, a groove 112 is provided on the inner side wall of the first air outlet 111, and a support arm 321 is provided on the valve frame 320. The support arm 321 slides along the groove 112 to abut against the blower 210.

[0053] It should be noted that the support arm 321 slides along the slide groove 112, allowing the valve frame 320 to slide stably along the axial direction of the first air outlet 111. In one embodiment, two slide grooves 112 are provided, and two support arms 321 are also provided. The two support arms 321 slide in the two slide grooves 112 respectively, thereby improving the stability of the valve frame 320 sliding along the axial direction of the first air outlet 111.

[0054] like Figure 2 and Figure 3 As shown, in one embodiment, a partition 270 is also provided on the circuit board 260, and a plurality of air passage holes 271 are provided on the partition 270.

[0055] It should be noted that the partition 270 is installed inside the pump housing 100 by screws, and the partition 270 is located above the circuit board 260, thus isolating and protecting the circuit board 260. Multiple air passages 271 are also provided on the partition 270. This allows gas to flow through the air passages 271 to enter and exit the pump housing 100.

[0056] like Figure 1 As shown, in one embodiment, the pump housing 100 includes a housing 110 and a panel 120. The panel 120 is disposed on the partition 270. The first air vent 111 is located on the housing 110, and the second air vent 121 is located on the panel 120.

[0057] It should be noted that a locking hole is made in the partition 270, and a locking post is provided in the panel 120. The locking post passes through the locking hole so that the panel 120 can be locked and fixed to the partition 270. The second air vent 121 is located on the panel 120. Thus, the panel 120 is located at the front of the housing 110, which is the structure when the air pump faces the user. On the one hand, it can protect the components inside the pump housing 100, and on the other hand, it can improve the overall appearance and structure of the air pump.

[0058] like Figure 1 As shown, in one embodiment, the panel 120 is provided with two buttons 130, and the circuit board 260 is provided with two switches, with the two buttons 130 respectively abutting against the two switches.

[0059] It should be noted that pressing the two buttons 130 controls the rotation of the blower 210 so that one of the two ends of the blower channel 211 connects to the first air outlet 111. These two buttons 130 are the inflation button and the deflation button, respectively. Specifically, in the off state, the blower 210 is in the initial state, meaning that neither the air inlet nor the air outlet of the blower channel 211 is connected to the first air outlet 111. Furthermore, in the off state, the blower 210 will not push against the valve frame 320, thus the valve plate 330 can stably seal the first air outlet 111. When the inflation button is pressed, the corresponding switch is pressed. At this time, the blower 210 rotates so that the exhaust end connects to the first air outlet 111, and then the blower 220 starts, allowing gas to be blown into the inflated product from the outside, and the air pump is in inflation operation. When the deflation button is pressed, the corresponding switch is pressed. At this time, the blower 210 rotates so that the air inlet end connects with the first air port 111. Then the blower 220 starts, so that the gas is drawn from the inflated product to the outside. The air pump is in the deflation working state.

[0060] In another embodiment, the reversing drive 230 further includes a drive cam and a connecting rod. The drive cam is mounted on the output shaft of the reversing motor 231, and the connecting rod is rotatably connected to the drive cam and the blower 210, respectively.

[0061] It should be noted that in this embodiment, a structure in which a drive cam and a connecting rod cooperate is used as the intermediate connection structure between the commutator motor 231 and the blower 210. Specifically, the drive cam is mounted on the output shaft of the commutator motor 231, and one end of the connecting rod is rotatably connected to the drive cam, wherein the connecting rod and the drive cam can be connected by a pin. Further, the connecting rod is connected to a non-central structure of the drive cam, that is, the distance between the connection position of the connecting rod and the drive cam and the output shaft of the commutator motor 231 is greater than zero. Further, the end of the connecting rod away from the drive cam is rotatably connected to the blower 210. The connecting rod and the blower 210 can also be connected by a pin. And a certain distance is provided between the rotation axis of the connecting rod and the blower 210. Thus, the connecting rod is rotatably connected to both the drive cam and the blower 210. When the commutator motor 231 drives the drive cam to rotate, the blower 210 rotates relative to the pump housing 100 under the pushing action of the connecting rod.

[0062] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the utility model patent. Unless otherwise specifically defined, the installation / fixing / setting mentioned in this utility model can be understood as including, but not limited to, locking and fixing with screws / bolts, welding, or bonding with adhesives, wherein the adhesives used can be commercially available finished products. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A reversing charge / discharge pump, characterized in that, include: The pump casing has a first air inlet and a second air inlet respectively opened on its side wall; and A blower assembly includes a blower duct, a fan, and a reversing drive. The blower duct is rotatably disposed within the pump housing, and a blower channel is formed inside the blower duct. The fan is disposed within the blower channel and is used to drive gas to flow directionally through the blower channel. The reversing drive is connected to the blower duct and is used to drive the blower duct to rotate, thereby connecting one end of the blower channel to the first air outlet and the other end to the second air outlet.

2. The reversing air pump according to claim 1, characterized in that, A bearing is provided on the inner bottom wall of the pump casing, and the blower is mounted on the bearing.

3. The reversing charging / discharging pump according to claim 1, characterized in that, The reversing drive includes a reversing motor, which is disposed inside the pump housing, and the output shaft of the reversing motor is connected to the blower.

4. The reversing charging / discharging pump according to claim 3, characterized in that, The reversing drive also includes a driving gear and a driven gear. The driving gear is disposed on the output shaft of the reversing motor, and the driven gear is disposed on the blower, and the driven gear meshes with the driving gear.

5. The reversing charging / discharging pump according to claim 4, characterized in that, A pressure plate is provided inside the pump casing, and the pressure plate abuts against the driven gear.

6. The reversing charging / discharging pump according to claim 5, characterized in that, A circular groove is provided on the top of the passive gear, and a star-shaped limiting part is provided on the pressure plate, which is adapted to be accommodated in the circular groove.

7. The reversing charge / discharge pump according to claim 5, characterized in that, The pressure plate has several ventilation holes.

8. The reversing charging / discharging pump according to claim 5, characterized in that, A circuit board is provided on the pressure plate, and the circuit board is electrically connected to the fan and the commutator motor.

9. The reversing charging / discharging pump according to claim 3, characterized in that, The reversing drive also includes a drive cam and a connecting rod. The drive cam is mounted on the output shaft of the reversing motor, and the connecting rod is rotatably connected to the drive cam and the blower respectively.

10. The reversing charge / discharge pump according to claim 1, characterized in that, A hood is provided on the outer side of the first air outlet. A valve frame is slidably mounted on the hood. A valve plate is mounted on the valve frame. A spring is provided between the valve frame and the hood. The spring is used to push the valve frame so that the valve plate seals the first air outlet. When one end of the blower channel is connected to the first air outlet, the blower pushes the valve frame to compress the spring.

Images