Novel portable inflator pump

Abstract

The utility model belongs to the technical field of air pump, including upper casing, lower casing, motor, heat dissipation blade, left clasp, right clasp, left piston connecting rod, right piston connecting rod, counterweight, one way air valve, cylinder head, cylinder cover, pressure sensor, air pipe, sealing ring, damping mechanism, transmission gear, cylinder, motor, heat dissipation blade, left clasp, right clasp, left piston connecting rod, right piston connecting rod, counterweight, one way air valve, cylinder head, cylinder cover, pressure sensor, air pipe, sealing ring, damping mechanism, transmission gear, cylinder are installed in upper and lower casing.

Description

Technical Field

[0001] This utility model relates to the field of air pump technology, and in particular to a novel portable air pump. Background Technology

[0002] A portable air pump is a widely used air filling device. Its main structure includes a motor, cylinder, piston, etc. It is powered by a vehicle battery or similar device. When working, the motor drives the piston to reciprocate in the cylinder, thereby inflating the tires of cars, electric bicycles, motorcycles, etc.

[0003] With the advancement of industrial technology, the functions of portable air pumps have become increasingly sophisticated. For example, the authorized patent of my country, patent number "202222315175" and patent name "A Portable Air Pump", states that "this utility model, by installing a detachable storage compartment, allows for the selection of storage compartments with different functions during the production process based on the type of adapter provided." As can be seen above, although the patent has achieved its stated purpose to a certain extent, it is limited by its structure and function, and like other technologies in this field, it still has the following technical disadvantages. (1): It does not have a good heat dissipation mechanism, and there is a chance of overheating and damage when the motor works under high load for a long time. (2): The motor and cylinder mechanism are fixedly installed in the housing with bolts, and the upper and lower housings are also installed together with bolts. This makes it inconvenient to assemble and disassemble related parts, which is detrimental to improving production and maintenance efficiency. (3): The motor and cylinder connection is fixed rigidly and connected to the upper and lower housings. The vibration of the whole equipment is relatively large when it is working, which will more or less have an adverse effect on the normal use of the equipment. In summary, it is essential to provide a portable air pump that has good heat dissipation, is easy to assemble and disassemble, and has relatively low vibration during operation. Utility Model Content

[0004] To overcome the shortcomings of existing portable air pumps due to structural and functional limitations, as described in the background art, this utility model provides a new type of portable air pump with a good heat dissipation channel, which can effectively dissipate heat from the motor and reduce the probability of motor overheating and damage. The upper and lower housings and the motor and cylinder assembly are connected by a snap-fit ​​method, which facilitates the disassembly and assembly of the motor or cylinder assembly and improves work efficiency accordingly. It also has a good vibration damping mechanism, which reduces the vibration intensity of the overall equipment and ensures the overall stable and reliable operation of the equipment as much as possible.

[0005] The technical solution adopted by this utility model to solve its technical problem is: A novel portable air pump includes an upper housing, a lower housing, a motor, cooling vanes, a left retaining ring, a right retaining ring, a left piston rod, a right piston rod, a counterweight, a one-way valve, a cylinder head, a cylinder cover, a pressure sensor, an air outlet pipe, a sealing ring, a vibration damping mechanism, a transmission gear, and a cylinder. The lower housing has multiple retaining seats on its exterior, and the lower part of the upper housing has multiple retaining clips. The rear ends of the upper and lower housings each have cooling air inlets. The inner middle sections of both the upper and lower housings have first fixing grooves on both sides, and the inner front left sides of both the upper and lower housings each have second fixing grooves. The right sides of both the upper and lower housings each have air outlets. The lower housing has a third fixing groove on its left end and lower front side, and the upper housing has a third fixing groove on its left end and upper front side. There are at least two cylinders, each fixedly mounted on both sides of the rear end of the cylinder head. The cylinder head has an opening at both its front and rear ends. Cooling blades are fixedly mounted on the outside of the rear shaft of the motor. A drive gear is fixedly mounted on the front shaft of the motor. A bearing is fixedly mounted inside the opening at the rear end of the cylinder head. A central shaft is fixedly mounted inside the inner ring of the bearing. A transmission gear is fixedly mounted on the right outer end of the central shaft. A right shaft is fixedly mounted on the right side of the front end of the transmission gear. The front end of the right piston connecting rod is rotatably mounted on the outside of the right shaft. A right retaining ring is fixedly mounted... On the right outer side of the right shaft, the piston of the right piston connecting rod is movably sleeved inside the right cylinder; the rear end of the counterweight is fixedly installed on the left outer side of the central shaft, the front end of the left piston connecting rod and the middle of the counterweight are rotatably mounted together, the piston of the left piston connecting rod is movably sleeved inside the left cylinder, the left retaining ring is fixedly installed on the left outer side of the left shaft, the front side of the two positioning grooves of the cylinder head and the rear side of the cylinder are fixedly mounted together, and two one-way valves are located between the rear ends of the two cylinders and the front ends of the two positioning grooves of the cylinder head; the upper end and the front and rear sides of the lower end of the cylinder head are respectively limited by limit grooves, and one end of multiple vibration damping mechanisms is respectively fixedly installed on four limit grooves. Inside the slot, the other ends of multiple vibration damping mechanisms are respectively installed in multiple third fixed slots. The front end of the exhaust pipe is fixedly installed on the rear end of the cylinder head. The cylinder head, cylinder, and exhaust pipe are installed between the left ends of the upper and lower housings. The limiting plates on the left, right, and front sides of the cylinder head are respectively located in the first and second fixed slots of the upper and lower housings. The motor is horizontally installed on the right front end of the upper and lower housings, and the drive gear is located on the left outer side of the first opening. The pressure sensor is installed at the upper front end of the exhaust pipe, and an air filling pipe is installed on the outer side of the rear end of the exhaust pipe. The upper and lower housings are fixedly connected together by multiple buckles to the outer end of the bracket.

[0006] Furthermore, the upper to lower outer sides of the card holder are inclined structures, the lower end of the card holder is a horizontal structure, and the inner diameter of the buckle's fastening interface is larger than the outer diameter of the card holder.

[0007] Furthermore, the rear side of the drive gear meshes with the front end of the transmission gear, and the number of teeth on the drive gear is less than the number of teeth on the transmission gear.

[0008] Furthermore, the outer diameter of the front end of the left connecting rod piston and the right connecting rod piston is smaller than the inner diameter of the cylinder, and the outer diameter of the rear end of the piston is larger than the inner diameter of the cylinder. The piston is made of a material such as rubber or leather.

[0009] Furthermore, the cylinder, cylinder head, cylinder cover, motor, cooling blades, and the inner sides of the upper and lower housings are spaced apart, and the multiple cooling holes and air outlets at the rear ends of the upper and lower housings are interconnected.

[0010] Furthermore, the vibration damping mechanism includes a fixed base and a spring. Two fixed bases are fixedly installed on the outer side of the upper and lower ends of the spring, and the outer diameter of the fixed base is larger than the outer diameter of the spring.

[0011] Furthermore, the one-way valve includes a sealing ring and a spring. The inner diameter of the opening at the rear end of the cylinder is smaller than the outer diameter of the sealing ring, and the outer diameter of the spring is larger than the inner diameter of the front inner end of the positioning groove in the cylinder head. The spring is located at the rear end of the sealing ring.

[0012] Furthermore, the upper end of the exhaust pipe has an opening, and the pressure sensor is fixedly installed in the opening.

[0013] Compared with existing technologies, the advantages of this utility model are: This new model has a good heat dissipation channel, which can effectively dissipate heat for the motor, reducing the probability of motor overheating and damage. The upper and lower housings and the motor and cylinder assembly are connected by a snap-fit ​​method, which facilitates the disassembly and assembly of the motor or cylinder assembly, thereby improving work efficiency. The four sets of vibration damping mechanisms can effectively reduce the vibration generated by the cylinder, cylinder head, motor, etc. during operation, ensuring the overall stable and reliable operation of the equipment as much as possible. In summary, this utility model has good application prospects. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a schematic diagram of the split structure of this utility model.

[0016] Figure 2 This is a structural schematic diagram of the present invention without the upper and lower shells.

[0017] Figure 3 This is a schematic diagram of the structure of this utility model without the upper shell.

[0018] Figure 4 This utility model is shown in a top-view partial structural diagram.

[0019] Figure 5 This utility model presents a partial top-view structural diagram of its heat dissipation transformation state. Detailed Implementation

[0020] Figure 1 ,2As shown in Figures 3, 4, and 5, the novel portable air pump includes an upper housing 1, a lower housing 2, a motor 3, a heat dissipation blade 4, a left retaining ring 5, a right retaining ring 6, a left piston connecting rod 7, a right piston connecting rod 8, a counterweight 9, a locking bolt 10, a cylinder sealing ring 11, a one-way valve 12, a cylinder head 13, a cylinder cover 14, a pressure sensor 15, an air outlet pipe 16, a pressure sensor sealing ring 17, a vibration damping mechanism 18, a transmission gear 19, and a cylinder 20. The lower housing 2 has multiple retaining seats 201 at its upper front end, rear end, left end, and right end, and the upper housing 1 has multiple retaining seats 201 at its lower front end, rear end, left end, and right end. Multiple buckles 101, the number of buckles 101 and buckle seats 201 are the same; the middle of the lower rear end of the upper housing 1 and the middle of the upper rear end of the lower housing 2 each have a semi-circular air pipe positioning hole 200; the rear end of the upper housing 1 and the rear end of the lower housing 2 each have multiple heat dissipation air inlets 202; the inner middle of the upper housing 1 and the lower housing 2 each have a first fixing groove 203 on both sides; the inner front left side of the upper housing 1 and the lower housing 2 each have a second fixing groove 204; the right front end of the upper housing and the lower housing each have an air outlet 205; the middle of the left inner end and the lower front side of the lower housing 1, the middle of the left inner end and the upper housing 1 There is a third fixing groove 206 on the upper front side. There are two cylinders 20, which are fixedly installed on the rear sides of the cylinder head 13. There is an opening at the front and rear of the cylinder head 13. The heat dissipation blade 4 is fixedly installed on the outside of the rear shaft of the motor 3. A drive gear 31 is fixedly installed on the front shaft of the motor 3. A bearing 132 is fixedly installed in the opening at the rear of the cylinder head. A central shaft 133 is fixedly installed in the inner ring of the bearing 132. The transmission gear 19 is fixedly installed on the right side of the central shaft 133. A right shaft 191 is fixedly installed on the right side of the front end of the transmission gear 19. The right piston is connected to... The front end of the connecting rod of rod 8 is rotatably mounted on the outside of the right shaft 191. The right snap ring 6 (with an outer diameter larger than the outer diameter of the shaft hole at the front end of the right piston connecting rod) is fixedly mounted on the right outside of the right shaft 191. The piston at the rear end of the right piston connecting rod 8 is movably sleeved in the right cylinder 20. The middle part of the rear end of the counterweight 9 is fixedly mounted on the left outside of the central shaft 133. The front end of the connecting rod of the left piston connecting rod 7 and the middle part of the counterweight 9 are rotatably mounted together via a connecting shaft. The piston at the rear end of the left piston connecting rod 7 is movably sleeved in the left cylinder 20. The left snap ring 5 is fixedly mounted on the left outside of the left shaft (with an outer diameter larger than the outer diameter of the shaft hole at the front end of the left piston connecting rod).The two positioning grooves 141 of the cylinder head 14 are fixed together at the front and rear sides of the cylinder 20 by four bolts 21. The two cylinder sealing rings 17 are located between the front ends of the two positioning grooves 141 of the cylinder head and the rear ends of the two cylinders 20. The two one-way valves 12 are located between the rear ends of the two cylinders 20 and the front ends of the two positioning grooves 141 of the cylinder head. The cylinder head 13 (fixed at the rear side between the front ends of the two cylinders) has a limiting groove 134 on the front and rear sides of its upper and lower ends. One end of the four damping mechanisms 18 is fixedly installed in the four limiting grooves 134. The other ends of the four damping mechanisms 18 are respectively located in the third fixing groove 206 in the middle left and lower front of the lower housing, and the middle left and front of the upper housing. The front end of the exhaust pipe 16 is fixedly installed in the middle of the rear end of the cylinder head 14, and its front end communicates with the positioning groove 141 of the cylinder head. The cylinder 20 and the air outlet pipe 16 are installed between the left ends of the upper housing 1 and the lower housing 2. The limiting plates 135 on the left and right sides and the middle of the front side of the cylinder head are respectively located in the first fixing groove 203 on both sides of the middle of the upper housing 1 and the lower housing 2 and the second fixing groove 204 on the left side of the front side of the upper housing and the lower housing. The motor 3 is horizontally installed at the front right end of the upper housing 1 and the lower housing 2. The rotating shaft of the motor 3 is located outside the left end of the opening 131 at the front end of the cylinder head, and the driving gear 31 is located outside the left side of the first opening 131. The pressure sensor 15 is installed at the upper front end of the air outlet pipe 16. The middle part of the air outlet pipe 16 is located between the air pipe positioning hole 200 of the upper housing 1 and the lower housing 2. A gas filling pipe with a gas nozzle (not shown in the figure) is installed outside the rear end of the air outlet pipe. The upper housing 1 and the lower housing 2 are fixedly connected together by multiple buckles 101 to the outer end of the buckle 201.

[0021] Figure 1 , 2As shown in Figures 3, 4, and 5, the upper to lower outer sides of the card holder 201 are inclined, while the lower end of the card holder 201 is horizontal. The inner diameter of the buckle interface of the buckle 101 is larger than the outer diameter of the card holder 201. The rear side of the drive gear 31 meshes with the front end of the transmission gear 19, and the number of teeth of the drive gear 31 is less than the number of teeth of the transmission gear 19. The outer diameter of the front end of the left connecting rod piston 7 and the right connecting rod piston 8 is slightly smaller than the inner diameter of the cylinder 20, and the outer diameter of the rear end of the piston is slightly larger than the inner diameter of the cylinder 20. The piston is made of a material such as rubber or leather. The spacing between the cylinder 20, cylinder head 13, cylinder cover 14, motor 3, cooling blades 4, and the inner sides of the upper housing 1 and lower housing 2 (serving as an airflow channel) is such that multiple cooling air inlets 202 and outlets 205 at the rear ends of the upper housing 1 and lower housing 2 are interconnected. The vibration damping mechanism 18 includes a fixed base 181 and a spring 182. Two fixed bases 181 are fixedly installed on the upper and lower outer sides of the spring 182, and the outer diameter of the fixed base 181 is larger than the outer diameter of the spring 182. The one-way valve 12 includes a sealing ring 121 and a spring 122. The inner diameter of the opening in the middle of the rear end of the cylinder 20 is smaller than the outer diameter of the sealing ring 121, and the outer diameter of the spring 122 is larger than the inner diameter of the front inner end of the cylinder head positioning groove 141. The spring 122 is located at the rear end of the sealing ring 121, the front end of the sealing ring 121 contacts the rear end of the cylinder 20, and the rear end of the spring 122 contacts the front end of the positioning groove of the cylinder head 14. There is an opening at the upper rear end of the exhaust pipe 16. The pressure sensor 15 (with two power input terminals connected to the two poles of the battery via wires, and the signal output terminal connected to the power input terminal of the pressure display gauge via wires) is fixedly installed in the opening by bolts, a sealing cover 151, and a pressure sensor sealing ring 17.

[0022] Figure 1 , 2As shown in Figures 3, 4, and 5, this new type of equipment features an overall L-shaped arrangement of dual cylinders, which is more compact and space-saving than the existing linear arrangement of dual cylinders. It also has a good heat dissipation channel. When the shaft of the motor 3 drives the heat dissipation blades 4 to rotate, it generates negative pressure, which draws in external air 22 through the heat dissipation inlet 202 and then discharges it from the outlet 205. Due to the spacing between the cylinder 20, cylinder head 13, cylinder cover 14, motor 3, heat dissipation blades 4, etc., and the inner sides of the upper housing 1 and lower housing 2, the air 22 can effectively dissipate heat for the motor 3 during its inflow and outflow, reducing the probability of the motor 3 overheating and being damaged. The upper housing 1, lower housing 2, motor 3, and cylinder assembly are connected by snap-fit ​​101 and clamp 201. This facilitates the disassembly and assembly of the motor 3 or cylinder assembly (cylinder 20, cylinder head 13, cylinder head 14, etc.) and improves work efficiency. The six sets of vibration damping mechanisms 18 can effectively reduce the vibration generated by the cylinder 20, cylinder head 14, motor 3, etc. during operation, and ensure the overall stable and reliable operation of the equipment as much as possible. When this new type of vehicle is in operation, after the motor 3 is powered on, the motor 3 first drives the transmission gear 19 and the right connecting rod piston 8 to move via the drive gear 31. At the same time, the transmission gear 19 drives the counterweight bias block (counterweight block 9) via the central shaft 133 of the bearing 132 to drive the left connecting rod piston 7 to move. The left connecting rod piston 7 and the right connecting rod piston 8 work alternately in a cycle, which reduces the front and back vibration of the pistons of the left and right connecting rod pistons and makes their operation smoother, while improving the work efficiency. After being compressed by the piston, the air is output through the cylinder 20 and the rear side of the cylinder head 14, and then flows through two one-way air valves 12 to the outlet pipe 16 for inflation of vehicle tires, etc. At the same time, a pressure sensor 15 is set above the outlet pipe 16 to detect the pressure in real time, so that the user can fully grasp the inflation pressure.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model.

[0024] Furthermore, it should be understood that although this specification describes the embodiments, the embodiments do not necessarily contain only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in the embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A novel portable air pump, comprising an upper housing, a lower housing, a motor, heat dissipation blades, a left retaining ring, a right retaining ring, a left piston rod, a right piston rod, a counterweight, a one-way valve, a cylinder head, a cylinder cover, a pressure sensor, an air outlet pipe, a sealing ring, a vibration damping mechanism, a transmission gear, and a cylinder; characterized in that, The lower housing has multiple retaining seats on its exterior, and the lower part of the upper housing has multiple snap-fits. The rear ends of the upper and lower housings each have heat dissipation air inlets. The inner middle sides of both the upper and lower housings have first fixing grooves, and the inner front left sides of both the upper and lower housings each have second fixing grooves. The right sides of both the upper and lower housings each have air outlets. The inner left end and lower front side of the lower housing, and the inner left end and upper front side of the upper housing each have third fixing grooves. There are at least two cylinders, with the two cylinders fixedly mounted on both sides of the rear end of the cylinder head. The front end of the cylinder head and... Each end has an opening. Cooling blades are fixedly mounted on the outer side of the motor's rear shaft. A drive gear is fixedly mounted on the motor's front shaft. A bearing is fixedly mounted inside the opening at the rear end of the cylinder head. A central shaft is fixedly mounted inside the inner ring of the bearing. A transmission gear is fixedly mounted on the right outer end of the central shaft. A right shaft is fixedly mounted on the right side of the front end of the transmission gear. The front end of the right piston connecting rod is rotatably mounted on the outside of the right shaft. A right snap ring is fixedly mounted on the right outer side of the right shaft. The piston of the right piston connecting rod is movably sleeved inside the right cylinder. The rear end of the counterweight is fixedly mounted on the left side of the central shaft. On the outer side, the front end of the left piston connecting rod and the middle of the counterweight are rotatably mounted together. The piston of the left piston connecting rod is movably sleeved inside the left cylinder. The left retaining ring is fixedly mounted on the left outer side of the left shaft, and fixedly mounted together on the front side of the two positioning grooves of the cylinder head and the rear side of the cylinder. Two one-way valves are located between the rear ends of the two cylinders and the front ends of the two positioning grooves of the cylinder head. The upper end and the front and rear sides of the lower end of the cylinder head are respectively equipped with limit grooves. One end of multiple vibration damping mechanisms is fixedly mounted in the four limit grooves, and the other end of multiple vibration damping mechanisms is respectively mounted on multiple third... Inside the fixed slot, the front end of the exhaust pipe is fixedly installed on the rear end of the cylinder head. The cylinder head, cylinder, and exhaust pipe are installed between the left ends of the upper and lower housings. The limiting plates on the left and right sides and the front side of the cylinder head are respectively located in the first and second fixed slots of the upper and lower housings. The motor is horizontally installed on the right front end of the upper and lower housings, and the drive gear is located on the left outer side of the first opening. The pressure sensor is installed at the upper front end of the exhaust pipe, and an air filling pipe is installed on the outer side of the rear end of the exhaust pipe. The upper and lower housings are fixedly connected together by multiple buckles to the outer end of the bracket.

2. The novel portable air pump according to claim 1, characterized in that, The upper and lower outer sides of the card holder are inclined, while the lower end of the card holder is horizontal. The inner diameter of the buckle's fastening interface is larger than the outer diameter of the card holder.

3. The novel portable air pump according to claim 1, characterized in that, The rear side of the driving gear meshes with the front side of the transmission gear, and the number of teeth on the driving gear is less than the number of teeth on the transmission gear.

4. The novel portable air pump according to claim 1, characterized in that, The outer diameter of the front end of the left connecting rod piston and the outer diameter of the right connecting rod piston are smaller than the inner diameter of the cylinder, and the outer diameter of the rear end of the piston is larger than the inner diameter of the cylinder. The piston is made of either rubber or leather.

5. The novel portable air pump according to claim 1, characterized in that, The cylinder, cylinder head, cylinder cover, motor, cooling blades, and the inner sides of the upper and lower housings are spaced apart. Multiple cooling holes and air outlets at the rear ends of the upper and lower housings are interconnected.

6. The novel portable air pump according to claim 1, characterized in that, The vibration damping mechanism includes a fixed base and a spring. Two fixed bases are fixedly installed on the upper and lower outer sides of the spring, and the outer diameter of the fixed base is larger than the outer diameter of the spring.

7. The novel portable air pump according to claim 1, characterized in that, The one-way valve includes a sealing ring and a spring. The inner diameter of the opening at the rear end of the cylinder is smaller than the outer diameter of the sealing ring, and the outer diameter of the spring is larger than the inner diameter of the front inner end of the positioning groove in the cylinder head. The spring is located at the rear end of the sealing ring.

8. The novel portable air pump according to claim 1, characterized in that, There is an opening at the upper end of the exhaust pipe, and the pressure sensor is fixedly installed in the opening.

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