Pump core of inflator pump

Abstract

The utility model discloses a pump core of an inflator pump. The pump core comprises a gas conveying mechanism and a gas compressing mechanism, the gas conveying mechanism is provided with a compression cavity; the gas compression mechanism comprises a pump box, a motor and a pump body assembly arranged in the pump box. The pump body assembly comprises a cam structure gear and a piston, and one end of the piston is eccentrically connected to the cam structure gear; a piston disc is arranged at the other end of the piston and is accommodated in the compression cavity; the motor drives the cam structure gear to drive the piston disc to do reciprocating rectilinear motion in the compression cavity, so that gas entering the compression cavity is compressed, and the gas conveying mechanism inflates a product to be inflated. According to the pump core of the inflator pump, the piston is eccentrically arranged on the gear of the cam structure, so that components in the pump box are simpler and more compact, and the size of the pump box is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of inflation equipment, and specifically to an inflation pump core. Background Technology

[0002] When tires, inflatable tents, and SUP sports equipment require gas replenishment, an external manual or electric air pump is needed for inflation before they can be used. To improve efficiency, existing air pumps are equipped with a compression cylinder for outputting compressed gas for inflation, as well as a blower for drawing in outside air and compressing it to assist in inflation.

[0003] The compressor cylinder and the blower are installed inside the housing of the SUP air pump. Since the output end of the compressor cylinder and the output end of the blower are both connected to the air outlet pipe of the SUP air pump, there is a possibility that the compressed gas output by the compressor cylinder may leak out along the bypass in the air outlet pipe to the blower. When the wind speed of the leaked compressed gas is high, the fan may not be able to rotate normally under the action of the leaked compressed gas, resulting in a reduction in inflation efficiency.

[0004] Users can choose between an SUP air pump equipped with a separate compression cylinder or an SUP air pump that is equipped with both a compression cylinder and a blower, depending on their actual inflation needs.

[0005] For SUP (Supercharged Upright) air pumps that are equipped with both a compressor cylinder and a blower, the blower and the SUP pump body are mostly fixed together with bolts. When the user only needs to operate the compressor cylinder, the bolted connection between the blower and the SUP pump body makes disassembly inconvenient, making it difficult for the user to carry or use the SUP pump. Furthermore, after removing the blower, the corresponding bypass port needs to be sealed with a cap to prevent compressed gas from the compressor cylinder from blowing out through the bypass, adding extra steps to the operation.

[0006] To address the aforementioned issues, publication number CN202320424160.3 discloses a SUP (Super Upholstered Unit) air pump core, comprising a gas output section and a first gas compression section. The gas output section has a first air inlet and an air outlet. The first air inlet is connected to the output end of the first gas compression section. The first gas compression section pressurizes external gas and compresses it to obtain a first compressed gas. The first compressed gas sequentially passes through the output end of the first gas compression section, the first air inlet, and the air outlet before being output. This improves upon the problems of low inflation efficiency caused by compressed gas leaking along a bypass, the inconvenience of disassembling the blower from the SUP air pump body causing inconvenience for users to carry or use, and the need to use a cover to block the blower after it is removed from the SUP air pump body, which adds unnecessary steps to the operation.

[0007] However, the aforementioned air pump mechanism still has the following problems: the existing air pump mechanism has a complex internal structure, poor compactness, and many connecting drive components, resulting in an increased size of the air pump mechanism and a larger overall size of the air pump using this mechanism, making it less portable; due to the large number of components, prolonged use can easily increase the failure rate of connections between various components, affecting service life and performance, and increasing assembly or maintenance costs, thus failing to meet the cost-effectiveness requirements of current users. Utility Model Content

[0008] This utility model addresses the shortcomings of current technology by providing an air pump core, aiming to solve the technical problems of complex structure, poor compactness, and large overall size of existing air pump cores.

[0009] The technical solution adopted by this utility model to achieve the above objectives is as follows:

[0010] An air pump core includes a gas delivery mechanism and a gas compression mechanism; the gas delivery mechanism has a compression chamber; the gas compression mechanism includes a pump housing, a motor, and a pump body assembly disposed within the pump housing; the pump body assembly includes a cam-structured gear and a piston, one end of the piston being eccentrically connected to the cam-structured gear; the other end of the piston is provided with a piston disc, the piston disc being housed within the compression chamber; the motor drives the cam-structured gear, thereby causing the piston disc to reciprocate linearly within the compression chamber, thereby compressing the gas within the compression chamber.

[0011] The motor is located outside the pump box, and a drive wheel is provided on its motor shaft. The drive wheel meshes with the cam structure gear.

[0012] The gas delivery mechanism includes a connecting seat and a compression chamber; the compression chamber is located between the connecting seat and the pump box, and has a first end face and a second end face that are opposite to each other; the pump box is provided with a box opening for the piston to extend out; the first end face of the compression chamber is provided with a compression chamber opening for the piston to enter; the inner wall of the box opening is attached to the outer wall of the compression chamber opening.

[0013] The piston disc has a groove around its periphery and a first vent hole on its surface. A sealing gasket is provided between the piston disc and the compression chamber. The sealing gasket includes an outer ring and an elastic soft rubber sheet. The outer ring seals against the groove and the inner wall of the compression chamber. The elastic soft rubber sheet seals against the surface of the piston disc. The gas in the pump box can be controlled to enter the compression chamber by opening or closing the first vent hole.

[0014] The second end face of the compression chamber is provided with an air outlet, and the side of the second end face near the connecting seat is provided with an elastic sealing cover. The elastic sealing cover opens or seals the air outlet to send the compressed gas generated in the compression chamber into the connecting seat or isolate the compression chamber from the inner cavity of the connecting seat.

[0015] The elastic sealing cover is an elastic sheet, one end of which is fixedly disposed on the second end face, and the other end is provided with a silicone ring. The silicone ring matches the hole wall of the air outlet to seal the air outlet.

[0016] The connecting seat is further provided with an air outlet pipe and an air inlet pipe on the end face opposite to the compression chamber. The air outlet pipe and the air inlet pipe are arranged adjacent to each other and are both connected to the connecting seat, and the air inlet pipe is provided with an air inlet.

[0017] The air outlet pipe is equipped with a brushless motor, which is used to blow air to quickly fill the product to be filled with compressed gas entering the connector and gas entering the connector from the air inlet.

[0018] A one-way valve assembly is provided inside the intake pipe or below the brushless motor. The one-way valve assembly includes a mounting plate, a third mounting groove, and a one-way valve located inside the intake pipe. The mounting plate is housed within the third mounting groove. The mounting plate has a mounting hole at its center and a plurality of second vent holes arranged in a ring array around the mounting hole. The one-way valve includes an elastic soft rubber sealing sheet and a plunger located at the center of the elastic soft rubber sealing sheet. The plunger is detachably and fixedly inserted into the mounting hole, and the elastic soft rubber sealing sheet is located within the mounting groove to seal and cover the mounting hole and the second vent holes.

[0019] A sensor is installed inside the air outlet pipe; a circuit board is installed on the outer wall of the air outlet pipe, and the circuit board is electrically connected to the brushless motor, the sensor and the motor.

[0020] Compared with the prior art, the above-mentioned one or more technical solutions in the air pump core provided by the present invention have at least one of the following technical effects:

[0021] The air pump core of this utility model makes the components inside the pump box simpler and more compact by eccentrically setting the piston on the cam structure gear, thus reducing the volume of the pump box.

[0022] External gas can enter the compression chamber through the pump box or the connecting seat through the air inlet pipe. The air pump core has high inflation efficiency, is fully filled with gas, and has high compression efficiency.

[0023] Rapid inflation is achieved by incorporating a brushless motor-based rapid inflation assembly within the air outlet pipe, significantly reducing the overall volume of the air pump core.

[0024] The air outlet pipe and the air inlet pipe are arranged adjacent to each other and are both connected to the connecting seat. This reduces the distance of gas flow, improves the inflation efficiency and performance of the air pump core, and makes the overall size of the air pump using the air pump core smaller and lighter, thus making it easier to carry and use outdoors, improving convenience and meeting the needs of existing users.

[0025] This invention simplifies the internal structure by reducing the number of components, thereby reducing the failure rate of the air pump core, increasing its service life and performance, reducing the difficulty of maintenance and manufacturing, improving maintenance and assembly efficiency, and reducing costs. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of the air pump core described in this utility model.

[0028] Figure 2 This is a front view of the air pump core described in this utility model.

[0029] Figure 3 For along Figure 2 A cross-sectional view along line AA in the middle.

[0030] Figure 4 This is an exploded view of the pump core of the air pump described in this utility model.

[0031] Figure 5 This is a schematic diagram of the cam structure gear 331 of the air pump core of the present invention.

[0032] Figure 6 This is a schematic diagram of the combined structure of the piston and sealing gasket of the air pump core described in this utility model.

[0033] Figure 7 for Figure 6 A schematic diagram of its decomposed structure.

[0034] Figure 8 This is a schematic diagram of the compression chamber and elastic sealing cover of the air pump core described in this utility model.

[0035] Figure 9 for Figure 8 A schematic diagram of its decomposed structure.

[0036] Figure 10 This is a side front view of the air pump core described in this utility model.

[0037] Figure 11 For along Figure 10 A cross-sectional view along the BB line.

[0038] Figure 12 This is a side front view of the air pump core according to another embodiment of the present invention.

[0039] Figure 13 For along Figure 12 Sectional view of the middle CC line

[0040] Figure 14 This is a schematic diagram of the one-way valve assembly 250 of the air pump core of the present invention.

[0041] Figure 15 for Figure 12 A schematic diagram of its decomposed structure. Detailed Implementation

[0042] The following description is only a preferred embodiment of the present invention and does not limit the scope of protection of the present invention.

[0043] See appendix Figures 1-4 An air pump core is disclosed for use in a SUP pump. The air pump core includes a gas delivery mechanism 200 and a gas compression mechanism 300, which are connected and communicate with each other. The gas compression mechanism 300 includes a pump housing 310, a motor 320, and a pump body assembly 330 disposed within the pump housing 310. The motor 320 can be internally or externally disposed within the pump housing 310. To reduce the volume of the pump housing, it is preferably disposed externally. The pump housing 310 is provided with an air inlet for outside air to enter. The pump body assembly 330 includes a cam-structured gear 331 and a piston 333. One end of the piston 333 is eccentrically connected to the cam-structured gear 331, and the other end is accommodated in the compression chamber 220. The motor 320 drives the cam structure gear 331, thereby driving the piston 333 to move repeatedly in the compression chamber 220, thereby compressing the gas entering the compression chamber 220, and the gas delivery mechanism 200 quickly inflates the product to be inflated.

[0044] The pump body assembly 330 further includes a bearing assembly 332 and a central shaft 334. The bearing assembly 332 is disposed on the inner wall of the pump housing 310. Specifically, the inner wall of the pump housing 310 is provided with a first mounting groove 311 that matches the bearing assembly 332, and the bearing assembly 332 is accommodated in the first mounting groove 311. The pump housing 310 is provided with a reinforcing rib 312 on the outer wall of the first mounting groove 311, and the reinforcing rib 312 is used to improve the strength of the first mounting groove 311. The central shaft 334 is fixedly mounted at the center of the bearing assembly 332. The cam structure gear 331 is fixedly mounted on the other end of the central shaft 334. The cam structure gear 331 is also provided with an eccentric shaft 335, and one end of the piston 333 is fixedly mounted on the eccentric shaft 335. The motor 320 is located outside the pump housing 310, and its motor shaft extends into the pump housing 310. A drive wheel 321 is mounted on the motor shaft, and the drive wheel 321 meshes with the cam structure gear 331. The motor 320 drives the drive wheel 321 to rotate. Through the meshing of the drive wheel 321 with the cam structure gear 331, the cam structure gear 331 is driven to rotate, which in turn drives the piston 333 fixed thereon to reciprocate linearly, thereby compressing the gas to generate high-pressure inflation gas.

[0045] Furthermore, a piston disc 336 is provided at the other end of the piston 333.

[0046] Furthermore, the bearing assembly 332 includes two or more bearings. The multiple bearings are used to improve the stability of the bearing assembly 332, thereby ensuring that the cam structure gear 331 and the piston 333 move stably and evenly, and achieve stable and efficient gas compression.

[0047] Furthermore, referring to Figures 3-5 The cam structure gear 331 has a central hole 3311, and an eccentric hole 3312 is provided on the side of the central hole 3311. The central shaft 334 passes through the central hole 3311, and the eccentric shaft 335 passes through the eccentric hole 3312.

[0048] This application eccentrically fixes one end of the piston 333 on the cam structure gear 331. The cam structure gear 331 drives the piston 333 to reciprocate linearly by rotating, thereby compressing the gas and achieving high-pressure inflation. This greatly reduces the number of parts in the traditional SUP air pump, reduces the volume of the gas compression mechanism 300 in the traditional SUP air pump, and thus reduces the overall volume of the pump core of the traditional SUP air pump, making it lighter, with a lower failure rate, a longer service life, and easier to inspect and maintain.

[0049] Reference Figure 1 , Figure 3-4The gas delivery mechanism 200 includes a connecting seat 210 and a compression chamber 220. The compression chamber 220 is disposed between the connecting seat 210 and the pump box 310, and has a first end face 220a and a second end face 220b disposed opposite to each other. The first end face 220 of the compression chamber 220 is fixedly connected to the pump box 310. It should be understood that there are various ways and structures for the fixed connection between the compression chamber 220 and the pump box 310. Without departing from the design concept of this utility model, the fixed connection method and structure can be flexibly changed and should not be regarded as departing from the protection scope of this utility model. Specifically, the first end face 220 of the compression chamber 220 and the pump box 310 are respectively provided with a post 221 and a slot 313. The post 221 is inserted into the slot, thereby fixing the two together.

[0050] Reference Figure 3-4 The pump housing 310 is provided with a housing opening 312 for the piston 333 to extend out. The first end face 220a of the compression chamber 220 is provided with a compression chamber opening 222 for the piston 333 to enter. The inner wall of the housing opening 312 fits the outer wall of the compression chamber opening 222, and the two are sized to match each other.

[0051] Reference Figure 46-7, the piston disc 336 is built into the compression chamber 220, and a sealing gasket 337 is provided between the piston disc 336 and the compression chamber 220. The sealing gasket 337 is used to ensure that the outer wall of the piston disc 336 fits against the inner wall of the compression chamber 220, ensuring sealing and thus ensuring the efficiency of compressing gas and performing high-pressure inflation. Specifically, the piston disc 336 has a groove 3341 around its periphery, and a first vent hole 3342 is provided on the disc surface of the piston disc 336. The sealing gasket 337 includes a connecting outer ring 3371 and an elastic soft rubber sheet 3372. The outer ring 3371 seals against the groove 3341 and the inner wall of the compression chamber 220. The elastic soft rubber sheet 3372 seals against the disc surface of the piston disc 336. By opening or closing the first vent hole 3342, the gas in the pump box 310 can be controlled to enter the compression chamber 220. When the piston disc 336 moves towards the pump box 310 within the compression chamber 220, the volume between the piston disc 336 and the second end face 220b of the compression chamber 220 increases, creating a negative pressure within the compression chamber 220. This causes the elastic soft rubber sheet 3372 to be lifted, opening the first vent hole 3342, allowing gas from the pump box 310 to enter and inflate the compression chamber 220. When the piston disc 336 moves away from the pump box 310 within the compression chamber 220, the volume between the piston disc 336 and the second end face 220b of the compression chamber 220 decreases, compressing the gas within the compression chamber 220 and creating a positive pressure. The elastic soft rubber sheet 3372 then returns to its original position, sealing and adhering to the surface of the piston disc 336 and the first vent hole 3342 thereon.

[0052] Reference Figure 8-9 In section 11, the second end face 220b of the compression chamber 220 is provided with an air outlet 223, and the end face of the second end 220b near the connecting seat 210 is provided with an elastic sealing cover 224. The elastic sealing cover 224 opens or seals the air outlet 223, thereby sending the compressed gas generated in the compression chamber 220 into the connecting seat 210 or isolating the compression chamber 220 from the inner cavity of the connecting seat 210. The elastic sealing cover 224 is an elastic sheet, one end of which is fixedly disposed on the second end 220b, and the other end is provided with a silicone ring 225. The silicone ring 225 matches the hole wall of the air outlet 223 to seal the air outlet 223. When the pressure in the compression chamber 220 is higher than the pressure in the connecting seat 210, the elastic sealing cover 224 is pushed open to open the air outlet 223. When the pressure in the compression chamber 220 is lower than the pressure in the connecting seat 210, the elastic sealing cover 224 resets under its own elastic force, and the silicone ring 225 seals against the wall of the air outlet 223 to seal the air outlet 223.

[0053] The outer wall of the compression chamber 220 is provided with heat dissipation fins 226, which are used to conduct heat and dissipate heat generated when the gas in the compression chamber 220 is compressed.

[0054] Reference Figure 1 and 11 The connecting seat 210 is further provided with an outlet pipe 230 and an inlet pipe 240 on the end face opposite to the compression chamber 220. The outlet pipe 230 and the inlet pipe 240 are arranged adjacent to each other and are both connected to the connecting seat 210. It should be understood that the number of outlet pipes 230 and inlet pipes 240 can be set as needed and is not limited to one. The outlet pipe 230 is provided with an outlet 231, which is connected to the product to be inflated; the inlet pipe 240 is provided with an inlet 241. The rapid inflation assembly 270 is provided inside the outlet pipe 230. The rapid inflation assembly 270 includes a brushless motor 271 and a sensor 272, and the brushless motor 271 is electrically connected to the sensor 272. The brushless motor 271 is used to blow air to quickly inflate the product to be inflated by the compressed gas entering the connecting seat 210 and the gas entering the connecting seat 210 from the inlet 241. The sensor 270 detects the air pressure inside the connector 210.

[0055] Reference Figure 1 The outer wall of the air outlet pipe 230 is equipped with a circuit board 233, which is electrically connected to the brushless motor 271, the sensor 272, and the motor 310. The circuit board 233 has a built-in control chip. When the sensor 272 detects that the air pressure in the connector 210 is lower than the air pressure in the compression chamber 220 by a predetermined value, the control chip instructs the motor 310 to operate, switching to a state of generating high-pressure compressed gas and sending it into the connector 210. When the sensor 272 detects that the air pressure in the connector 210 is higher than the air pressure in the compression chamber 220 by a predetermined value, the control chip instructs the motor 310 to stop operating.

[0056] The outer wall of the air outlet pipe 230 is provided with a second mounting groove 234, and the circuit board 233 is disposed in the first mounting groove 311.

[0057] Reference Figure 11-15A one-way valve assembly 250 is provided inside the intake pipe 240 or below the brushless motor 271. The one-way valve assembly 250 closes or opens to control whether outside air can enter the connector 210 through the intake pipe 240. Specifically, the one-way valve assembly 250 includes a mounting plate 251, a third mounting groove 252, and a one-way valve 253 disposed inside the intake pipe 240. The mounting plate 251 is housed within the third mounting groove 252. The mounting plate 251 has a mounting hole 253 at its center and a plurality of second vent holes 254 arranged in a ring array around the mounting hole 253. The one-way valve 255 includes an elastic soft rubber sealing sheet 2551 and a plunger 2552 disposed at the center of the elastic soft rubber sealing sheet 2551. The plunger 2552 is detachably and fixedly inserted into the mounting hole 253, thereby facilitating replacement when the one-way valve 255 is damaged. The elastic soft rubber sealing sheet 2551 is disposed in the mounting groove 252 to seal and cover the mounting hole 253 and the second vent hole 254.

[0058] When the piston 333 slides away from the connecting seat 210 within the compression chamber 220, gas enters the compression chamber 220, creating a negative pressure within the connecting seat 210. The outside atmosphere opens the elastic soft rubber sealing sheet 2551 within the air inlet pipe 240, allowing gas to enter the connecting seat 210. When the piston 333 slides closer to the connecting seat 210 within the compression chamber 220, the gas in the compression chamber 220 is compressed and forced into the connecting seat 210, achieving high-pressure inflation of the connecting seat 210. At this time, the air pressure in the connecting seat 210 is positive, and the elastic soft rubber sealing sheet 2551 elastically returns to its original position, sealing and covering the mounting hole 253 and the second vent hole 254, thus sealing the air inlet pipe 240.

[0059] Furthermore, a sealing structure is provided between the connecting seat 210 and the compression chamber 220, and between the compression chamber 220 and the pump box 310; the sealing structure includes a sealing groove and a sealing block, the sealing groove is respectively disposed on the pump box 310 and the connecting seat 210, the sealing block is respectively disposed on the top and bottom of the compression chamber 220, and a first sealing ring is provided between the sealing groove and the sealing block. The sealing structure is used to improve the sealing performance, thereby ensuring the performance of the air pump core.

[0060] The air pump core of this utility model simplifies and compacts the components within the pump housing 310 by eccentrically positioning the piston 333 on the cam structure gear 331, thus reducing the volume of the pump housing 310. A rapid inflation assembly 270 within the outlet pipe enables rapid inflation, significantly reducing the overall volume of the air pump core. External gas can enter the compression chamber 220 through the pump housing 310 or the connecting seat 210 through the inlet pipe 230. The air pump core boasts high inflation efficiency, full gas filling, and high compression efficiency. The outlet pipe 230 and the inlet pipe 240 are adjacent and both communicate with the connecting seat 210, reducing the gas flow distance and improving the inflation efficiency and performance of the air pump core. This also results in a smaller and lighter overall size of the air pump using the air pump core, making it easier to carry outdoors, improving convenience, and meeting the needs of existing users.

[0061] This invention simplifies the internal structure by reducing the number of components, thereby reducing the failure rate of the air pump core, increasing its service life and performance, reducing the difficulty of maintenance and manufacturing, improving maintenance and assembly efficiency, and reducing costs.

[0062] This utility model is not limited to the above-described embodiments. Other pump cores for air pumps obtained by using the same or similar structures or devices as the above-described embodiments of this utility model are all within the protection scope of this utility model.

Claims

1. An inflator pump core comprising a gas delivery mechanism and a gas compression mechanism; said gas delivery mechanism having a compression chamber; characterized in that, The gas compression mechanism includes a pump box, a motor, and a pump body assembly disposed within the pump box; the pump body assembly includes a cam structure gear and a piston, one end of the piston being eccentrically connected to the cam structure gear; the other end of the piston is provided with a piston disc, the piston disc being housed in the compression chamber; the motor drives the cam structure gear, thereby causing the piston disc to reciprocate linearly in the compression chamber, thereby compressing the gas entering the compression chamber, and the gas delivery mechanism inflates the product to be inflated.

2. An inflator pump core according to claim 1, wherein, The motor is located outside the pump box, and a drive wheel is provided on its motor shaft. The drive wheel meshes with the cam structure gear.

3. The pump core of claim 1, wherein, The gas delivery mechanism includes a connecting seat and a compression chamber; the compression chamber is located between the connecting seat and the pump box, and has a first end face and a second end face that are arranged opposite to each other; the pump box is provided with a box opening for the piston to extend out; the first end face of the compression chamber is provided with a compression chamber opening for the piston to enter; the inner wall of the box opening is attached to the outer wall of the compression chamber opening.

4. A pump core according to any one of claims 1 to 3, wherein The piston disc has a groove around its periphery and a first vent hole on its surface. A sealing gasket is provided between the piston disc and the compression chamber. The sealing gasket includes an outer ring and an elastic soft rubber sheet. The outer ring seals against the groove and the inner wall of the compression chamber. The elastic soft rubber sheet seals against the surface of the piston disc. The gas in the pump box can be controlled to enter the compression chamber by opening or closing the first vent hole.

5. The pump core of claim 3, wherein, The second end face of the compression chamber is provided with an air outlet, and the side of the second end face near the connecting seat is provided with an elastic sealing cover. The elastic sealing cover opens or seals the air outlet to send the compressed gas generated in the compression chamber into the connecting seat or isolate the compression chamber from the inner cavity of the connecting seat.

6. An inflator pump core according to claim 5, wherein, The elastic sealing cover is an elastic sheet, one end of which is fixedly disposed on the second end face, and the other end is provided with a silicone ring. The silicone ring matches the hole wall of the air outlet to seal the air outlet.

7. A pump core according to claim 6, wherein The connecting seat is also provided with an air outlet pipe and an air inlet pipe on the end face opposite to the compression chamber; the air outlet pipe and the air inlet pipe are arranged adjacent to each other and are both connected to the connecting seat, and the air inlet pipe is provided with an air inlet.

8. A pump core according to claim 7, wherein The air outlet pipe is equipped with a brushless motor, which is used to blow air to quickly fill the product to be filled with compressed gas entering the connector and gas entering the connector from the air inlet.

9. A pump core according to claim 8, wherein A one-way valve assembly is provided inside the intake pipe or below the brushless motor. The one-way valve assembly includes a mounting plate, a third mounting groove, and a one-way valve located inside the intake pipe. The mounting plate is housed within the third mounting groove. The mounting plate has a mounting hole at its center and a plurality of second vent holes arranged in a ring array around the mounting hole. The one-way valve includes an elastic soft rubber sealing sheet and a plunger located at the center of the elastic soft rubber sealing sheet. The plunger is detachably and fixedly inserted into the mounting hole, and the elastic soft rubber sealing sheet is located within the mounting groove to seal and cover the mounting hole and the second vent holes.

10. The pump core of claim 8, wherein, The air outlet pipe is internally provided with a sensor; an outer wall of the air outlet pipe is provided with a circuit board, and the circuit board is electrically connected with the brushless motor, the sensor and the motor.

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