Mini air pump for inflating tire

Abstract

The invention discloses a mini air pump for tire inflation, and relates to the technical field of inflation pumps, the mini air pump comprises a front cover, a rear cover and a box body enclosed by the front cover and the rear cover, and further comprises a locking assembly arranged on one side of the front cover and used for fixing an accessory box and an air pressure piston assembly arranged in the front cover and the rear cover, the air pressure piston assembly is arranged in the box body, an air inlet of the air pressure piston assembly is connected to an air inlet groove in the box body, the storage battery and the motor core are arranged in the box body in parallel, the space occupied area of the storage battery and the space occupied area of the motor core are optimized and reduced, the specification of the whole air pump can reach 90 mm * 90 mm * 37 mm, and the size of the whole air pump can reach 90 mm * 90 mm * 37 mm. And meanwhile, through the arranged air tap connector, an air pipe is not needed, an air pump can be directly connected to a tire of an automobile or a bicycle for inflating, and the tire inflating efficiency of people is improved.

Description

Technical Field

[0001] The invention relates to the technical field of air pumps, and in particular to a mini air pump for inflating tires. Background Art

[0002] The air pump is also called an air pump, an air pump, or an inflation pump. It works by running a motor. When the motor is running, the valve of the communicating device is opened by the atmospheric pressure, and the gas enters the air cylinder. When air is inflated into the tire, the valve is closed by the air pressure in the air cylinder, and the gas enters the tire.

[0003] After searching, the Chinese utility model patent with announcement number CN206801810U discloses a portable tire air pump, including a motor and a piston mechanism driven by the motor, the piston mechanism includes a cylinder body and a piston handle with a piston installed, an air pump is installed on the motor, the air pump is connected to the piston, the motor shaft of the motor drives the piston handle to make the piston axially displace in the cylinder body to inflate the air in the air pump, a pressure sensor connected to a controller is installed on the pump body of the air pump, the controller is connected to the motor and can control the operation of the motor, an air outlet is provided on the pump body of the air pump on one side of the pressure sensor, an air outlet nozzle is sealed on the air outlet, and a quick connector is installed on the air outlet nozzle.

[0004] Based on the existing technology, it is found that the above patent still has the following shortcomings: the above air pump has a special shape and a high height, so it is not convenient for the staff to store it during the carrying process. At the same time, the above air pump needs to use a hose and a quick connector to inflate the tire, which makes the whole inflation process more cumbersome and cannot meet people's use needs. Therefore, a mini air pump for tire inflation is urgently needed to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and propose a mini air pump for inflating tires. Its advantages are: by arranging the battery and the motor core in parallel in the box body (a general term for the front cover and the rear cover), the space occupied by the battery and the motor core is optimized and reduced, so that the specifications of the entire air pump can reach 90mm*90mm*37mm, meeting people's needs for easy carrying. At the same time, through the air nozzle interface, there is no need to use an air pipe. The air pump can be directly connected to the tire of a car or bicycle for inflating, which improves people's efficiency in inflating tires and facilitates people's operation.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A mini air pump for inflating a tire, comprising a front cover and a rear cover and a box body surrounded by the front cover and the rear cover, and further comprising:

[0008] A locking assembly, which is arranged on one side of the front cover and is used to fix the front cover and the accessory box arranged in the rear cover;

[0009] A pneumatic piston assembly, wherein the pneumatic piston assembly is disposed in the box body, an air inlet of the pneumatic piston assembly is connected to an air inlet groove on the box body, and an air outlet of the pneumatic piston assembly is connected to an air nozzle interface disposed on one side of the box body;

[0010] A sealing component, wherein the sealing component is arranged at one end of the air nozzle interface;

[0011] A reciprocating transmission mechanism, wherein the output end of the reciprocating transmission mechanism is connected to one side of the pneumatic piston assembly for driving the pneumatic piston assembly to reciprocate, and the input end of the reciprocating transmission mechanism is connected to a motor core, which is fixed in the box body.

[0012] Through the above technical solution: people's demand for quick inflation of tires is met, and the entire inflation process does not require the use of a connected air tube, which effectively improves the inflation efficiency of the tire. At the same time, it also avoids the problem that the air tube is not long enough when inflating with a traditional air tube. During the inflation process, since the gas path is short enough, the response efficiency is faster during the inflation process, which effectively saves the inflation time and meets people's usage needs.

[0013] The present invention is further configured such that the back cover is snap-connected with the front cover, a first assembly groove and a second assembly groove are respectively provided on an outer wall of one side of the front cover, a display screen and a control button are respectively fixedly connected inside the first assembly groove and the second assembly groove, a power switch is provided on one side of the front cover and the back cover, a charging port is provided on one side of the front cover and the back cover, the charging port is a type-c interface, a battery is provided inside the box body, and the charging port is electrically connected to the battery.

[0014] Through the above technical solution: the air pump can be cyclically charged, which ensures that the air pump can realize independent energy storage and power supply, making it convenient for people to use.

[0015] The present invention is further configured such that the number of the storage batteries is two groups, and the two groups of storage batteries are distributed in parallel with the motor core inside the box body.

[0016] Through the above technical solution: the space occupied by the battery and the motor core is optimized and reduced, making the overall structure more compact. Without increasing the external dimensions of the air pump, more space is left for other components, so that the specifications of the entire air pump can reach 90*90*37 (mm), meeting people's needs for easy carrying.

[0017] The present invention is further configured such that the sealing assembly includes a fixed tube fixedly connected to one end of the air nozzle interface, a threaded groove is provided inside the fixed tube, an inner sleeve is fixedly connected to the interior of the front cover, one end of the inner sleeve is provided with a threaded tooth, the threaded tooth is meshed with the threaded groove, and one end of the inner sleeve is located inside the fixed tube.

[0018] Through the above technical solution: by tightening the air nozzle interface of the air pump, when the air nozzle interface rotates, the fixed tube can be driven to rotate together, so that the inclined groove inside the air nozzle interface presses the locking plate at the end of the inner sleeve.

[0019] The present invention is further configured such that a locking plate is fixedly connected to one end of the inner sleeve located inside the fixed tube, the locking plates are distributed in an equidistant circle at one end of the inner sleeve, the inner diameter of the locking plate gradually decreases in the direction away from the end of the inner sleeve, a bevel groove is provided inside the air nozzle interface, the bevel groove is in contact with one end of the locking plate, and a rubber part is provided at one end of the inner sleeve away from the fixed tube.

[0020] Through the above technical solution: since the inner sleeve is designed as a retractable structure and a rubber part is installed inside the inner sleeve, clamping and sealing can be effectively achieved when the inner sleeve shrinks and presses the air nozzle and the rubber part, so that the entire air pump will not leak during the inflation process.

[0021] The present invention is further configured as follows: a positioning groove is provided inside the accessory box, an air pump needle is clamped inside the positioning groove, a driving gear is fixedly connected to the output end of the motor core, the driving gear is meshed with a reduction gear, a rotating shaft is fixedly connected to an outer wall on one side of the reduction gear, a shaft sleeve is fixedly connected to a circumferential outer wall of the rotating shaft, a piston rod is fixedly connected to the circumferential outer wall of the shaft sleeve, a piston body is provided at one end of the piston rod, a piston sleeve is provided on the outer wall of the piston body, a piston cylinder is fixedly connected to the inside of the box body, the piston body and the piston sleeve are both located inside the piston cylinder, and the outer wall of the piston sleeve is in contact with the circumferential inner wall of the piston cylinder.

[0022] Through the above technical solution: the positioning groove can effectively clamp and fix the air needle to prevent the air needle from loosening and falling off when people carry the air pump. At the same time, the rotation of the rotating shaft can drive the sleeve to make eccentric movement, so that the piston rod can drive the piston body to make reciprocating motion inside the piston cylinder to generate gas, meeting people's needs for quick inflation of tires.

[0023] The present invention is further configured such that the locking assembly includes an L-shaped plate fixedly connected to the inner wall of one side of the rear cover, a second spring is fixedly connected to the bottom inner wall of the L-shaped plate, a connecting column is inserted into the interior of the second spring, and a connecting block is fixedly connected to one end of the connecting column away from the second spring.

[0024] Through the above technical solution: since the second spring is in a compressed state, the second spring will always provide an upward elastic force to the connecting block, so that the top of the connecting block can be pressed against the bottom outer wall of the accessory box, thereby ensuring the stability of the accessory box.

[0025] The present invention is further configured such that one end of the connection block away from the connection column is fixedly connected to a clamping rod, a clamping groove is provided on the bottom outer wall of the accessory box, and one end of the clamping rod is clamped in the interior of the clamping groove.

[0026] Through the above technical solution: the clamping rod at the top of the connecting block is clamped in the clamping groove provided at the bottom of the accessory box, which can further improve the locking effect of the locking assembly on the accessory box.

[0027] The present invention is further configured such that a slide groove is provided on one side outer wall of the front cover and the rear cover, a slider is slidably connected inside the slide groove, the slider is fixedly connected to the connecting block, and a button is fixedly connected to one side outer wall of the slider.

[0028] Through the above technical solution: since the slider slides inside the slide groove, the slider can be driven to slide down as a whole when people press the button, thereby realizing the rapid unlocking of the locking component.

[0029] The present invention is further configured such that a baffle is fixedly connected to an inner wall on one side of the front cover, a first spring is fixedly connected to an inner wall on one side of the baffle, a spring seat is fixedly connected to an outer wall on one side of the accessory box, and an end of the first spring away from the baffle is inserted into the interior of the spring seat.

[0030] Through the above technical solution: since there is a first spring in a compressed state in the spring seat fixedly connected to one side of the accessory box, when the card rod is disengaged from the card slot, the first spring will immediately restore its deformation, so that the accessory box can be quickly popped out from the box body, making it convenient for the staff to take out the air needle inside the accessory box.

[0031] The beneficial effects of the present invention are:

[0032] 1. In the present invention, by arranging the battery and the motor core in parallel in the box body, the space occupied by the battery and the motor core is optimized and reduced, making the overall structure more compact. Without increasing the external size of the air pump, more space is reserved for other components, so that the specifications of the entire air pump can reach 90mm*90mm*37mm, meeting people's needs for easy carrying. At the same time, improving the direction and position of the motor core can more reasonably utilize the limited space inside the portable air pump. By adjusting the direction and position of the motor core, the electrical connection can be optimized, the line length and resistance can be reduced, and the power transmission efficiency can be improved. The shorter line can reduce energy loss, so that the air pump can work longer at the same battery capacity.

[0033] 2. In the present invention, when inflating the tire, it is only necessary to insert the air nozzle interface into the air nozzle of the tire, and by tightening the air nozzle interface of the air pump, when the air nozzle interface rotates, it can drive the fixed tube to rotate together, so that the inclined groove inside the air nozzle interface presses the locking plate at the end of the inner sleeve. Since the inner sleeve is designed as a retractable structure and a rubber part is installed inside the inner sleeve, the clamping and sealing can be effectively achieved in the process of the inner sleeve shrinking and pressing the air nozzle and the rubber part, so that the entire air pump will not leak during the inflation process and can achieve rapid inflation. The entire inflation process does not require the use of a connecting air duct, which effectively improves the inflation efficiency of the tire and also avoids the situation that the air duct length is insufficient when inflating with a traditional air duct. In addition, during the inflation process, since the gas path is short enough, the response efficiency is faster in the process of inflating the tire, which effectively saves the inflation time and meets people's usage needs.

[0034] 3. In the present invention, the air pump can be adapted to the inflation work of different types of tires through the inflation needle inside the accessory box, and the accessory box is stored inside the entire air pump, thereby avoiding the situation that it is easy to lose or find difficult when carried alone. At the same time, when the staff needs to take the inflation needle inside the accessory box, they only need to press the button downward to realize the quick pop-up of the accessory box, which improves people's efficiency in taking the inflation needle inside the accessory box. After taking it out, the accessory box can be inserted into the box body again to complete the effective storage of the accessory box, which is convenient for people's recycling. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of the overall front structure of a mini air pump for inflating tires proposed by the present invention;

[0036] Figure 2 This is a schematic diagram of the overall back structure of a mini air pump for inflating tires proposed by the present invention;

[0037] Figure 3This is a schematic diagram of the internal structure of a mini air pump for inflating tires proposed by the present invention after the front cover is disassembled;

[0038] Figure 4 This is a schematic diagram of the front cover structure of a mini air pump for inflating tires proposed by the present invention;

[0039] Figure 5 A schematic cross-sectional plan view of a mini air pump for inflating a tire proposed by the present invention;

[0040] Figure 6 A mini air pump for inflating tires proposed by the present invention Figure 5 A schematic diagram of the enlarged structure at A in the middle;

[0041] Figure 7 This is a schematic diagram of the disassembled structure of the piston and cylinder of a mini air pump for inflating tires proposed by the present invention;

[0042] Figure 8 A schematic diagram of a half-section structure of an air nozzle interface of a mini air pump for inflating a tire proposed by the present invention;

[0043] Fig. 9 This is a schematic structural diagram of a locking assembly of a mini air pump for inflating a tire proposed by the present invention.

[0044] In the figure: 1. front cover; 2. display screen; 3. air nozzle interface; 4. control button; 5. charging port; 6. power switch; 7. button; 8. accessory box; 9. anti-slip strip; 10. rear cover; 11. air inlet slot; 12. slider; 13. battery; 14. positioning column; 15. mounting hole; 16. connecting block; 17. air needle; 18. spring seat; 19. first spring; 20. reduction gear; 21. bushing; 22. rotating shaft; 23. Piston rod; 24. Piston cylinder; 25. Inner sleeve; 26. Fixed tube; 27. Motor core; 28. Baffle; 29. ​​First assembly groove; 30. Second assembly groove; 31. Piston sleeve; 32. Rubber piece; 33. Screw thread; 34. Driving gear; 35. Piston body; 37. Locking plate; 38. Threaded groove; 39. Bevel groove; 40. L-shaped plate; 41. Connecting column; 42. Second spring; 43. Clamping rod; 44. Clamping groove. DETAILED DESCRIPTION

[0045] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0046] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0047] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent.

[0048] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0049] Example 1

[0050] Reference Figure 1-Figure 9 A mini air pump for inflating tires, comprising a front cover 1 and a rear cover 10, the rear cover 10 being snap-connected with the front cover 1, an anti-slip strip 9 being arranged on one side outer wall of the front cover 1 and the rear cover 10, a first assembly groove 29 and a second assembly groove 30 being respectively opened on one side outer wall of the front cover 1, a display screen 2 and a control button 4 being respectively fixedly connected inside the first assembly groove 29 and the second assembly groove 30, and a power switch 6 being arranged on one side of the front cover 1 and the rear cover 10;

[0051] The front cover 1 and the rear cover 10 are both provided with an accessory box 8, and one side of the front cover 1 is provided with a locking assembly for fixing the accessory box 8;

[0052] A positioning column 14 is provided inside the front cover 1 and the rear cover 10. A mounting hole 15 is provided on the outer wall of one side of the rear cover 10. The center of the mounting hole 15 is the same as the center of the positioning column 14. A circular hole is provided at one end of the positioning column 14 in the rear cover 10, and a threaded hole is provided at one end of the positioning column 14 in the front cover 1.

[0053] The front cover 1 and the rear cover 10 form a box body, and a motor core 27 is arranged inside the box body. An air inlet groove 11 is opened on one side outer wall of the rear cover 10. A driving gear 34 is fixedly connected to the output end of the motor core 27, and the driving gear 34 meshes with the reduction gear 20. A rotating shaft 22 is fixedly connected to the outer wall of one side of the reduction gear 20. A shaft sleeve 21 is fixedly connected to the circumferential outer wall of the rotating shaft 22. A piston rod 23 is fixedly connected to the circumferential outer wall of the shaft sleeve 21. A piston body 35 is arranged at one end of the piston rod 23. A piston sleeve 31 is sleeved on the outer wall of the piston body 35. A piston cylinder 24 is fixedly connected inside the box body. The piston body 35 and the piston sleeve 31 are both located inside the piston cylinder 24. The outer wall of the piston sleeve 31 contacts the circumferential inner wall of the piston cylinder 24. A gas nozzle interface 3 is arranged on one side of the box body. A sealing assembly is arranged at one end of the gas nozzle interface 3. The staff turns on the power switch 6 to start the motor core 27, and the driving gear 34 can be driven to rotate when the motor core 27 starts. During the rotation of the driving gear 34, the reduction gear 20 can be driven to rotate together. At the same time, the diameter of the driving gear 34 is smaller than the reduction gear 20, which effectively avoids the situation that the reduction gear 20 rotates too fast and easily causes the cylinder to explode. When the reduction gear 20 rotates, it can drive the rotating shaft 22 on one side to rotate. During the rotation of the rotating shaft 22, the shaft sleeve 21 can be driven to make eccentric movement together, so that the piston rod 23 can drive the piston body 35 to make reciprocating motion inside the piston cylinder 24 to generate gas, which meets people's demand for fast tire inflation, and the entire inflation process does not need to use the method of connecting the air duct, which effectively improves the inflation efficiency of the tire, and also avoids the situation that the air duct length is not enough when the traditional air duct is inflated, and during the inflation process, because the gas path is short enough, the response efficiency is faster in the process of inflating the tire, which effectively saves the inflation time and meets people's use needs.

[0054] In order to ensure that the air pump can realize independent energy storage and power supply, refer to Figure 2 A charging port 5 is provided on one side of the front cover 1 and the rear cover 10. The charging port 5 is a type-c interface. A battery 13 is provided inside the box body. The charging port 5 is electrically connected to the battery 13, which can realize the cyclic charging of the air pump, ensuring that the air pump can realize independent energy storage and power supply, which is convenient for people to use.

[0055] In order to reduce the size of the entire air pump and make it more convenient for people to carry, refer to Figure 3 There are two groups of batteries 13, and the two groups of batteries 13 are distributed in parallel with the motor core 27 inside the box body, which optimizes and reduces the space occupied by the batteries 13 and the motor core 27, making the overall structure more compact. Without increasing the external size of the air pump, more space is left for other components, so that the specifications of the entire air pump can reach 90*90*37 (mm), meeting people's needs for easy carrying.

[0056] In order to ensure that the air pump needle 17 will not be loose inside the accessory box 8, refer to Figure 3 A positioning groove is provided inside the accessory box 8, and an air pump needle 17 is clamped inside the positioning groove. The air pump needle 17 can be effectively clamped and fixed through the positioning groove to prevent the air pump needle 17 from loosening and falling off when people carry the air pump.

[0057] Example 2

[0058] Reference Figure 5-Figure 8 , a mini air pump for inflating tires. Compared with Example 1, this embodiment further includes a sealing assembly, which includes a fixed tube 26 fixedly connected to one end of a gas nozzle interface 3, a threaded groove 38 is provided inside the fixed tube 26, an inner sleeve 25 is fixedly connected to the inside of the front cover 1, a screw thread 33 is provided at one end of the inner sleeve 25, and the screw thread 33 is meshed with the threaded groove 38. One end of the inner sleeve 25 is located inside the fixed tube 26, and one end of the inner sleeve 25 located inside the fixed tube 26 is fixedly connected to a locking piece 37, and the locking pieces 37 are distributed in an equidistant circle at one end of the inner sleeve 25, and the inner diameter of the locking piece 37 gradually decreases in a direction away from the end of the inner sleeve 25, and an inclined groove is provided inside the gas nozzle interface 3. 39, the bevel groove 39 is in contact with one end of the locking piece 37, and a rubber piece 32 is provided at the end of the inner sleeve 25 away from the fixed tube 26. When the staff needs to inflate the tire, it is necessary to insert the air nozzle interface 3 into the air nozzle of the tire, and by tightening the air nozzle interface 3 of the air pump, when the air nozzle interface 3 rotates, it can drive the fixed tube 26 to rotate together, so that the bevel groove 39 inside the air nozzle interface 3 presses the locking piece 37 at the end of the inner sleeve 25. Since the inner sleeve 25 is designed as a retractable structure and the rubber piece 32 is installed inside the inner sleeve 25, the inner sleeve 25 can be effectively clamped and sealed in the process of shrinking and pressing the air nozzle and the rubber piece 32, so that the entire air pump will not leak during the inflation process.

[0059] Example 3

[0060] Reference Figure 3 , Fig. 9, a mini air pump for inflating tires. Compared with embodiments 1-2, this embodiment also includes a locking assembly, which includes an L-shaped plate 40 fixedly connected to the inner wall of one side of the rear cover 10, the bottom inner wall of the L-shaped plate 40 is fixedly connected to a second spring 42, and a connecting column 41 is inserted into the interior of the second spring 42, and the end of the connecting column 41 away from the second spring 42 is fixedly connected to a connecting block 16, and the end of the connecting block 16 away from the connecting column 41 is fixedly connected to a clamping rod 43, and a clamping groove 44 is provided on the bottom outer wall of the accessory box 8, and one end of the clamping rod 43 is clamped in the interior of the clamping groove 44. Since the second spring 42 is in a compressed state, the second spring 42 will always provide an upward elastic force to the connecting block 16, so that the top of the connecting block 16 can be pressed against the bottom outer wall of the accessory box 8, thereby ensuring the stability of the accessory box 8, and at the same time, the clamping rod 43 at the top of the connecting block 16 is clamped in the clamping groove 44 opened at the bottom of the accessory box 8, which can further improve the locking effect of the locking assembly on the accessory box 8.

[0061] In order to facilitate people to press button 7 more easily, refer to Figure 1 A slide groove is provided on one side outer wall of the front cover 1 and the rear cover 10, and a slider 12 is slidably connected inside the slide groove. The slider 12 is fixedly connected to the connecting block 16, and a button 7 is fixedly connected to one side outer wall of the slider 12. Since the slider 12 slides inside the slide groove, when people press the button 7, the slider 12 can be driven to slide down as a whole, thereby realizing the rapid unlocking of the locking assembly.

[0062] In order to ensure the stability of the first spring 19, refer to Figure 4 , Fig. 9 A baffle 28 is fixedly connected to the inner wall of one side of the front cover 1, a first spring 19 is fixedly connected to the inner wall of one side of the baffle 28, a spring seat 18 is fixedly connected to the outer wall of one side of the accessory box 8, and one end of the first spring 19 away from the baffle 28 is inserted into the spring seat 18. Since the spring seat 18 fixedly connected to one side of the accessory box 8 contains the first spring 19 in a compressed state, when the card rod 43 is disengaged from the card slot 44, the first spring 19 will immediately restore its deformation, so that the accessory box 8 can be quickly ejected from the box body, which is convenient for the staff to take out the air needle 17 inside the accessory box 8.

[0063] Working principle: When the staff needs to inflate the tire, they need to insert the air nozzle interface 3 into the air nozzle of the tire, and by tightening the air nozzle interface 3 of the air pump, when the air nozzle interface 3 rotates, it can drive the fixed tube 26 to rotate together, so that the inclined groove 39 inside the air nozzle interface 3 presses the locking piece 37 at the end of the inner sleeve 25. Since the inner sleeve 25 is designed as a retractable structure and a rubber part 32 is installed inside the inner sleeve 25, the inner sleeve 25 contracts and presses the air nozzle and the rubber part 32 to effectively achieve clamping and sealing, so that the entire air pump will not leak during the process of inflating. When the air nozzle of the tire is locked, the staff turns on the power switch 6 to start the motor core 27. When the motor core 27 is started, it can drive the driving gear 34 to rotate. During the rotation of the driving gear 34, it can drive the reduction gear 20 to rotate together. At the same time, the diameter of the driving gear 34 is smaller than the reduction gear 20, which avoids the situation that the reduction gear 20 rotates too fast and easily causes the cylinder to explode. When the reduction gear 20 rotates, it can drive the rotating shaft 22 on one side to rotate. During the rotation of the rotating shaft 22, it can drive the sleeve 21 to do eccentric movement together, so that the piston rod 23 can drive The piston body 35 reciprocates inside the piston cylinder 24 to generate gas, which meets people's needs for quick tire inflation. The entire inflation process does not require the use of a connected air pipe, which effectively improves the inflation efficiency of the tire. At the same time, it also avoids the problem that the air pipe is not long enough when inflating with a traditional air pipe. During the inflation process, since the gas path is short enough, the response efficiency is faster during the tire inflation process, which effectively saves inflation time and meets people's usage needs. When the staff needs to inflate tires of different models, they can press down The button 7 on the side of the box body, when pressed and subjected to downward pressure, will drive the slider 12 and the connecting block 16 to descend as a whole. When the connecting block 16 descends, the clamping rod 43 at its end will disengage from the inside of the clamping slot 44, thereby releasing the locking effect on the accessory box 8. At the same time, a first spring 19 in a compressed state is contained in a spring seat 18 fixedly connected to one side of the accessory box 8. Therefore, when the clamping rod 43 disengages from the inside of the clamping slot 44, the first spring 19 will immediately restore its deformation, so that the accessory box 8 can be quickly ejected from the inside of the box body, making it convenient for the staff to take out the inflation needle 17 inside the accessory box 8.

[0064] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A mini air pump for inflating a tire, comprising a front cover (1) and a rear cover (10) and a box body surrounded by the front cover (1) and the rear cover (10), characterized in that: Also includes: A locking assembly, the locking assembly being arranged on one side of the front cover (1) and being used to fix the front cover (1) and an accessory box (8) arranged in the rear cover (10); A pneumatic piston assembly, wherein the pneumatic piston assembly is arranged in the box body, an air inlet of the pneumatic piston assembly is connected to an air inlet groove (11) on the box body, and an air outlet of the pneumatic piston assembly is connected to an air nozzle interface (3) arranged on one side of the box body; A sealing component, the sealing component being arranged at one end of the air nozzle interface (3); A reciprocating transmission mechanism, wherein the output end of the reciprocating transmission mechanism is connected to one side of the pneumatic piston assembly and is used to drive the pneumatic piston assembly to reciprocate, and the input end of the reciprocating transmission mechanism is connected to a motor core (27), which is fixed in the box body.

2. A mini air pump for inflating tires according to claim 1, characterized in that: The rear cover (10) is snap-connected with the front cover (1); a first assembly groove (29) and a second assembly groove (30) are respectively provided on one side outer wall of the front cover (1); a display screen (2) and a control button (4) are respectively fixedly connected inside the first assembly groove (29) and the second assembly groove (30); a power switch (6) is provided on one side of the front cover (1) and the rear cover (10); a charging port (5) is provided on one side of the front cover (1) and the rear cover (10); the charging port (5) is a type-C interface; a battery (13) is provided inside the box body; the charging port (5) is electrically connected to the battery (13).

3. A mini air pump for inflating tires according to claim 2, characterized in that: The number of the storage batteries (13) is two groups, and the two groups of storage batteries (13) are distributed in parallel with the motor core (27) inside the box body.

4. A mini air pump for inflating tires according to claim 1, characterized in that: The sealing assembly comprises a fixed tube (26) fixedly connected to one end of the air nozzle interface (3), a thread groove (38) being provided inside the fixed tube (26), an inner sleeve (25) being fixedly connected inside the front cover (1), a thread tooth (33) being provided at one end of the inner sleeve (25), the thread tooth (33) being meshed with the thread groove (38), and one end of the inner sleeve (25) being located inside the fixed tube (26).

5. A mini air pump for inflating tires according to claim 4, characterized in that: One end of the inner sleeve (25) located inside the fixed tube (26) is fixedly connected with a locking piece (37), and the locking pieces (37) are distributed in an equidistant circle at one end of the inner sleeve (25), and the inner diameter of the locking piece (37) gradually decreases in a direction away from the end of the inner sleeve (25). The inside of the air nozzle interface (3) is provided with a bevel groove (39), and the bevel groove (39) is in contact with one end of the locking piece (37). A rubber piece (32) is provided at one end of the inner sleeve (25) away from the fixed tube (26).

6. A mini air pump for inflating tires according to claim 1, characterized in that: The accessory box (8) is provided with a positioning groove inside, and an air pump needle (17) is clamped inside the positioning groove. The output end of the motor core (27) is fixedly connected to a driving gear (34), and the driving gear (34) is meshed with a reduction gear (20). The outer wall of one side of the reduction gear (20) is fixedly connected to a rotating shaft (22), and the circumferential outer wall of the rotating shaft (22) is fixedly connected to a shaft sleeve (21), and the circumferential outer wall of the shaft sleeve (21) is fixedly connected to a piston rod (23). A piston body (35) is provided at one end of the piston rod (23), and the outer wall of the piston body (35) is sleeved with a piston sleeve (31). The box body is fixedly connected to a piston cylinder (24), and the piston body (35) and the piston sleeve (31) are both located inside the piston cylinder (24), and the outer wall of the piston sleeve (31) is in contact with the circumferential inner wall of the piston cylinder (24).

7. A mini air pump for inflating tires according to claim 1, characterized in that: The locking assembly comprises an L-shaped plate (40) fixedly connected to the inner wall of one side of the rear cover (10); a second spring (42) is fixedly connected to the bottom inner wall of the L-shaped plate (40); a connecting column (41) is inserted into the interior of the second spring (42); and a connecting block (16) is fixedly connected to one end of the connecting column (41) away from the second spring (42).

8. A mini air pump for inflating tires according to claim 7, characterized in that: One end of the connection block (16) away from the connection column (41) is fixedly connected to a clamping rod (43); a clamping groove (44) is provided on the bottom outer wall of the accessory box (8); one end of the clamping rod (43) is clamped into the interior of the clamping groove (44).

9. The mini air pump for inflating tires according to claim 7, characterized in that: One side outer wall of the front cover (1) and the rear cover (10) is provided with a slide groove, the interior of the slide groove is slidably connected to a slider (12), the slider (12) is fixedly connected to the connecting block (16), and one side outer wall of the slider (12) is fixedly connected to a button (7).

10. A mini air pump for inflating tires according to claim 1, characterized in that: A baffle (28) is fixedly connected to an inner wall of one side of the front cover (1), a first spring (19) is fixedly connected to an inner wall of one side of the baffle (28), a spring seat (18) is fixedly connected to an outer wall of one side of the accessory box (8), and an end of the first spring (19) away from the baffle (28) is inserted into the interior of the spring seat (18).

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