An air pump

Abstract

The utility model relates to air pump technical field, concretely relates to an air pump. Include: protection shell, sliding element and drive assembly, and the at least one side of protection shell is provided with air cavity, sliding element is located in the protection shell, and the at least one end of sliding element is connected with piston assembly, and piston assembly is connected with air cavity slidingly, to compress the gas in air cavity, and the opposite sides of sliding element are equipped with first gear tooth part respectively, drive assembly includes rotary drive part, first drive gear and two second drive gears, and first drive gear is drivenly connected with rotary drive part, and is located in the protection shell, and first drive gear is respectively connected with two second drive gears transmission, and two second drive gears are located at the opposite sides of sliding element respectively, and are rotatably connected with protection shell, wherein, second drive gear includes sector gear tooth part, and sector gear tooth part is engaged with first gear tooth part. To solve the problem of low efficiency and high energy consumption of the air pump in the prior art by means of swing movement to drive piston assembly.

Description

Technical Field

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

[0002] In the industrial and mechanical fields, air pumps, as common gas transmission devices, are widely used in various applications, such as air compressors, vacuum pumps, and liquid transfer. Air pumps compress gas and deliver it to the required location, serving to provide power or transport media.

[0003] With the development of industrial automation and intelligence, higher requirements are being placed on the performance, efficiency, size, and ease of maintenance of air pumps. Existing traditional air pumps typically use a oscillating drive structure to drive the piston and compress the gas within the chamber. This type of air pump involves an oscillating motion when driving the piston assembly, resulting in low work efficiency and high energy consumption. Utility Model Content

[0004] The technical problem to be solved by this utility model embodiment is to provide an air pump to solve the problem of low efficiency and high energy consumption caused by the air pump in the prior art driving the piston assembly by oscillating motion.

[0005] This utility model discloses an air pump, comprising: a protective shell, a sliding member, and a drive assembly. At least one side of the protective shell has an air chamber. The sliding member is disposed within the protective shell, and at least one end of the sliding member is connected to a piston assembly, which is slidably connected to the air chamber to compress the gas within the air chamber. First gear teeth are respectively provided on opposite sides of the sliding member. The drive assembly includes a rotary drive member disposed on one side of the protective shell, a first drive gear, and two second drive gears. The first drive gear is drivenly connected to the rotary drive member and is located within the protective shell. The first drive gear is transmittedly connected to the two second drive gears, which are respectively located on opposite sides of the sliding member and rotatably connected to the protective shell. The second drive gear includes sector-shaped gear teeth that mesh with the first gear teeth, causing one second drive gear to drive the sliding member to move to the left and the other second drive gear to drive the sliding member to move to the right.

[0006] Optionally, the second drive gear includes a rotating shaft and a second gear tooth portion disposed on the rotating shaft. The sector gear tooth portion is coaxially disposed with the second gear tooth portion. The second gear tooth portion is connected to the first drive gear in a transmission connection, and the sector gear tooth portion is meshed with the first gear tooth portion.

[0007] Optionally, the slider is a connecting rod, and the first gear teeth are located on opposite sides of the connecting rod, with the first gear teeth on one side being misaligned with the first gear teeth on the other side.

[0008] Optionally, the piston assembly includes a piston head and a sealing ring. The piston head is located in the air chamber, and the two ends of the connecting rod are respectively connected to the piston head. The piston head is provided with an annular receiving groove, and the sealing ring is located in the receiving groove. The piston head is also provided with an air inlet. The end of the piston head away from the connecting rod is provided with a first valve plate corresponding to the air inlet. One end of the first valve plate is fixedly connected to the piston head, and the other end covers the air inlet.

[0009] Optionally, the air chamber includes a cavity and an end cap that are connected to each other. One end of the cavity is connected to a protective shell, and the other end is connected to the end cap. The end cap is provided with an air outlet. The piston head is located in the cavity. A one-way valve is provided between the end cap and the cavity.

[0010] Optionally, the one-way valve includes a valve seat and a second valve plate. The valve seat has an opening, and the cavity and end cap are respectively located on opposite sides of the valve seat. The second valve plate is located on the side of the valve seat facing the end cap. One end of the second valve plate is fixed to the valve seat, and the other end covers the opening. The opening can communicate with the air outlet.

[0011] Optionally, the piston assembly includes a piston rod and a piston head connected to each other. The gas chamber has a through hole on the side facing the protective shell. One end of the piston rod is connected to a sliding member, and the other end extends through the through hole into the gas chamber so as to be slidably connected to the gas chamber through the piston head.

[0012] Optionally, the protective shell is provided with a receiving seat, and the air cavity is located on the receiving seat. The air cavity is fixedly connected to the protective shell through the receiving seat.

[0013] Optionally, the second drive gear includes a rotating shaft and a second gear tooth portion located at one end of the rotating shaft. The sector gear tooth portion is located on the outer ring of the rotating shaft. The second gear tooth portion is connected to the first drive gear in a transmission connection, and the sector gear tooth portion is meshed with the first gear tooth portion.

[0014] Optionally, the sliding member includes a connecting block and a limiting ring disposed at at least one end of the connecting block, one end of the piston rod is fixedly connected to the limiting ring, and the first gear teeth are disposed on opposite sides of the connecting block.

[0015] Optionally, when one end of the slider is connected to the piston assembly, the rotary drive is located on the side of the protective shell away from the air chamber.

[0016] Optionally, the first drive gear is a bevel gear, and the drive assembly also includes a first transmission gear and a second transmission gear. The first transmission gear is provided with a third gear tooth and a fourth gear tooth in layers. The third gear tooth meshes with the first drive gear, the fourth gear tooth meshes with the second transmission gear, and the two second drive gears mesh with the second transmission gear respectively.

[0017] Optionally, the protective shell is also provided with a fixing rod, and the sliding member is provided with a sliding sleeve on the side facing the fixing rod. The sliding sleeve is slidably connected to the fixing rod, and the sliding member is slidably connected to the fixing rod through the sliding sleeve.

[0018] Optionally, when piston assemblies are connected to both ends of the slider, the air chambers are located on opposite sides of the protective shell, and the rotary drive is located on one side of the protective shell adjacent to one of the air chambers.

[0019] Optionally, the drive assembly further includes a first linkage gear and a second linkage gear arranged coaxially. The first linkage gear is located inside the protective housing and is meshed with the first drive gear. The two second drive gears are respectively meshed with the second linkage gear.

[0020] Compared with the prior art, the beneficial effects of the air pump provided by this utility model embodiment are as follows: a rotary drive member is provided on one side of the protective shell, one end of the rotary drive member is connected to a first drive gear, and the first drive gear is disposed inside the protective shell. A sliding member is also provided inside the protective shell, and first gear teeth are respectively provided on opposite sides of the sliding member, and second drive gears are provided that mesh with the first gear teeth. The first drive gears mesh with two second drive gears respectively, so the power of the rotary drive member can be transmitted to the second drive gears through the first drive gears, and finally applied to the sliding member through the second drive gears, realizing the movement of the sliding member. Among them, the two second drive gears are driven by the same first drive gear, so when the first drive gear rotates clockwise, both second drive gears rotate counterclockwise. Because the two second drive gears are located on opposite sides of the connector, and because the second drive gears are equipped with sector-shaped teeth, during actual operation, as one of the second drive gears drives the slider to move to the left, the sector-shaped teeth of that second drive gear will rotate one by one until they completely disengage from the slider due to the drive of the first drive gear. At this time, the sector-shaped teeth of the other second drive gear begin to engage one by one with the first teeth of the slider, driving the slider to move to the right. This configuration enables the slider to reciprocate within the protective housing, thereby driving the piston assembly connected to the slider to reciprocate, compressing the gas in the air chamber located on at least one side of the protective housing, thus enabling the air pump to pressurize and deliver gas outwards. This structure allows the air pump to drive the piston assembly to reciprocate in a linear direction, ensuring that the direction of movement of the slider is consistent with the direction of movement of the piston assembly, thereby improving the efficiency of the drive assembly and reducing the energy consumption of the air pump when compressing gas. Attached Figure Description

[0021] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. In the accompanying drawings: Figure 1 This is a schematic diagram of the air pump provided in an embodiment of the present utility model; Figure 2 This is a schematic diagram of the second drive bearing provided in an embodiment of the present utility model; Figure 3 This is one of the schematic diagrams of the sliding member provided in this embodiment of the utility model; Figure 4 This is a schematic diagram of the first and second linkage gears provided in an embodiment of the present utility model; Figure 5 This is a schematic diagram of the fixing rod and sliding sleeve provided in an embodiment of the present utility model; Figure 6 This is a schematic diagram of the top of the protective shell provided in this embodiment of the utility model; Figure 7 This is a schematic diagram of the first transmission gear and the second transmission gear provided in an embodiment of this utility model; Figure 8 This is a schematic diagram of the slider, piston assembly, and drive assembly provided in an embodiment of the present utility model; Figure 9 This is a second schematic diagram of the sliding member provided in this embodiment of the utility model; Figure 10 This is a schematic diagram of the air chamber and one-way valve provided in an embodiment of the present invention.

[0022] The labels for the attached figures are as follows: 1000, Air pump; 100, Protective housing; 101, Receiver; 102, Fixing rod; 103, Fixing column; 200, Air chamber; 201, Through hole; 202, Cavity; 203, One-way valve; 2031, Valve seat; 2032, Opening; 2033, Second valve plate; 204, End cap; 2041, Air outlet; 300, Sliding component; 301, First gear tooth; 302, Limiting ring; 303, Sliding sleeve; 304, Connecting rod; 305, Connecting block; 400, Piston assembly; 401, Piston rod; 4 02. Piston head; 4021. Receiving groove; 4022. Air inlet; 4023. First valve plate; 403. Sealing ring; 500. Drive assembly; 501. First drive gear; 502. Second drive gear; 5021. Rotating shaft; 5023. Second gear tooth; 5024. Sector gear tooth; 503. First linkage gear; 504. Second linkage gear; 505. Rotary drive component; 601. First transmission gear; 6011. Third gear tooth; 6012. Fourth gear tooth; 602. Second transmission gear. Detailed Implementation

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0024] This utility model embodiment provides an air pump 1000, such as Figure 1-3As shown, the air pump 1000 includes: a protective shell 100, a sliding member 300, and a drive assembly 500. At least one side of the protective shell 100 is provided with an air chamber 200. The sliding member 300 is disposed within the protective shell 100, and at least one end of the sliding member 300 is connected to a piston assembly 400, which is slidably connected to the air chamber 200 to compress the gas within the air chamber 200. First gear teeth 301 are respectively provided on opposite sides of the sliding member 300. The drive assembly 500 includes a rotary drive member 505 disposed on one side of the protective shell 100, a first drive gear 501, and two second drive gears 501. 2. The first drive gear 501 is drivenly connected to the rotary drive member 505 and is located inside the protective shell 100. The first drive gear 501 is drivenly connected to two second drive gears 502 respectively. The two second drive gears 502 are located on opposite sides of the sliding member 300 and are rotatably connected to the protective shell 100. The second drive gear 502 includes a sector tooth portion 5024, which meshes with the first tooth portion 301 so that one of the second drive gears 502 drives the sliding member 300 to move to the left and the other second drive gear 502 drives the sliding member 300 to move to the right.

[0025] A rotary drive member 505 is provided on one side of the protective shell 100. One end of the rotary drive member 505 is driven and connected to a first drive gear 501, which is located inside the protective shell 100. A sliding member 300 is also provided inside the protective shell 100. First gear teeth 301 are respectively provided on opposite sides of the sliding member 300, and second drive gears 502 mesh with the first gear teeth 301. The first drive gears 501 mesh with the two second drive gears 502 respectively, so the power of the rotary drive member 505 can be transmitted from the first drive gears 501 to the second drive gears 502, and finally applied to the sliding member 300 through the second drive gears 502, thus realizing the movement of the sliding member 300. The two second drive gears 502 are driven by the same first drive gear 501, so when the first drive gear 501 rotates clockwise, both second drive gears 502 rotate counterclockwise. Because the two second drive gears 502 are located on opposite sides of the connector, and because the second drive gears 502 are provided with sector-shaped gear teeth 5024, during actual operation, as one of the second drive gears 502 drives the slider 300 to move to the left, the sector-shaped gear teeth 5024 of the second drive gear 502 will rotate one by one until they completely disengage from the slider 300 due to the drive of the first drive gear 501. At this time, the sector-shaped gear teeth 5024 of the other second drive gear 502 begin to mesh one by one with the first gear teeth 301 of the slider 300, and drive the slider 300 to begin moving to the right. The above arrangement realizes the reciprocating motion of the slider 300 within the protective shell 100, thereby driving the piston assembly 400 connected to the slider 300 to perform reciprocating piston movement, compressing the gas in the air chamber 200 provided on at least one side of the protective shell 100, thereby realizing the ability of the air pump 1000 to pressurize and deliver gas outward. The air pump 1000 with this structure can drive the piston assembly 400 to reciprocate in a straight line, so that the movement direction of the sliding member 300 is consistent with the movement direction of the piston assembly 400, thereby improving the efficiency of the drive assembly 500 and reducing the energy consumption of the air pump 1000 when compressing gas.

[0026] Specifically, the piston assembly 400 is designed to effectively compress the gas, enabling the air pump 1000 to deliver gas. The piston assembly 400 is driven to move by the meshing between the drive components 500, achieving a stable transmission mechanism and ensuring the stable and uniform delivery of gas by the air pump 1000.

[0027] It should be noted that the two second drive gears 502 are located on opposite sides of the slider 300, and the design of the sector gear teeth 5024 enables the slider 300 to move in both directions. Therefore, an air chamber 200 can be provided on at least one side of the protective shell 100 to deliver airflow outward, which increases the functionality and applicability of the air pump 1000.

[0028] refer to Figure 2 The second drive gear 502 includes a rotating shaft 5021 and a second gear tooth 5023 disposed on the rotating shaft 5021. A sector gear tooth 5024 is coaxially disposed with the second gear tooth 5023. The second gear tooth 5023 is connected to the first drive gear 501 in a transmission connection, and the sector gear tooth 5024 is meshed with the first gear tooth 301.

[0029] The second drive gear 502 includes a rotating shaft 5021 and a second gear tooth portion 5023 disposed on the rotating shaft 5021, with a sector-shaped gear tooth portion 5024 coaxially disposed with the second gear tooth portion 5023. The second gear tooth portion 5023 is used for transmission connection with the first drive gear 501 and is used to drive the entire second drive gear 502 to rotate; therefore, the second gear tooth portion 5023 is a closed annular arrangement. The sector-shaped gear tooth portion 5024 is used for meshing with the sliding member 300. Because a portion of the second drive gear 502 cannot mesh with the sliding member 300, the sector-shaped gear tooth portion 5024 has a sector-shaped structure on the outer ring of the rotating shaft 5021.

[0030] In this design, the second gear tooth 5023 on the second drive gear 502 meshes with the first drive gear 501 to drive the entire second drive gear 502 to rotate; the sector gear tooth 5024 on the second drive gear 502 meshes with the first gear tooth 301 of the slider 300 to drive the slider 300 to move. This design helps improve the reliability of the drive assembly 500. By rationally arranging the positions of the second gear tooth 5023 and the sector gear tooth 5024, the risk of failure due to transmission failure can be reduced, and the reliability and stability of the air pump 1000 can be improved.

[0031] It should be noted that in this embodiment, the radius of the sector gear tooth 5024 is smaller than the radius of the second gear tooth 5023.

[0032] refer to Figure 8 and Figure 9 The sliding member 300 is a connecting rod 304, and the first wheel teeth 301 are provided on opposite sides of the connecting rod 304, with the first wheel teeth 301 on one side being misaligned with the first wheel teeth 301 on the other side.

[0033] Because both second drive gears 502 are meshed with the first drive gear 501 and are located on opposite sides of the first drive gear 501, one second drive gear 502 rotates clockwise and the other second drive gear 502 rotates counterclockwise. Therefore, when one of the sector gear teeth 5024 drives the slider 300 to move, it can drive the slider 300 to move to the left. When it moves to the limit position, the sector gear tooth 5024 disengages from the connecting rod 304, and the sector gear tooth 5024 of the other second drive gear 502 meshes with the first gear tooth 301 on the connecting rod 304, thereby driving the slider 300 to move to the right, thus realizing the linear reciprocating motion of the slider 300.

[0034] Because the first gear teeth 301 on both sides of the connecting rod 304 are misaligned, the second drive gears 502 on both sides of the connecting rod 304 will not interfere or affect each other when the connecting rod 304 moves to its limit position. That is, when one of the second drive gears 502 drives the slider 300 to move to its limit position, the second drive gear 502 disengages from the slider 300, while the other second drive gear 502 meshes with the slider 300 to drive the slider 300 to move in the opposite direction.

[0035] Specifically, the first gear teeth 301 are directly disposed on opposite sides of the connecting rod 304, so that the first gear teeth 301 can directly drive the connecting rod 304 to perform linear reciprocating motion, ensuring that the piston assembly 400 disposed at the end of the sliding member 300 can move in a straight line, thereby improving the motion efficiency of the piston assembly 400.

[0036] refer to Figure 8 The piston assembly 400 includes a piston head 402 and a sealing ring 403. The piston head 402 is located in the air chamber 200. The two ends of the connecting rod 304 are respectively connected to the piston head 402. The piston head 402 is provided with an annular receiving groove 4021. The sealing ring 403 is provided in the receiving groove 4021. The piston head is also provided with an air inlet 4022. The end of the piston head 402 away from the connecting rod 304 is provided with a first valve plate 4023 corresponding to the air inlet 4022. One end of the first valve plate 4023 is fixedly connected to the piston head 402, and the other end covers the air inlet 4022.

[0037] The piston heads 402 are positioned at opposite ends of the connecting rod 304, allowing the connecting rod 304 to drive the piston heads 402 at both ends to reciprocate within the air chamber 200, thus increasing the efficiency of the air pump 1000 in compressing gas. Simultaneously, this ensures that the two piston heads 402 connected by the connecting rod 304 are coaxially aligned and can move along the same straight line.

[0038] On the other hand, an air inlet 4022 is provided on the piston head 402, and a first valve plate 4023 is provided on the end of the piston head 402 away from the connecting rod 304. The first valve plate 4023 is used to control the flow direction of the intake airflow. In actual use, when the connecting rod 304 pushes the piston head 402 toward the air chamber 200, the pressure on the side of the piston head 402 facing the air chamber 200 is higher due to the compressed gas. Therefore, the compressed gas in the air chamber 200 presses the first valve plate 4023 against the air inlet 4022, preventing the gas in the air chamber 200 from flowing out through the air inlet 4022. When the connecting rod 304 drives the piston head 402 to move toward the side away from the air chamber 200, the pressure on the side of the piston head 402 facing the air chamber 200 is lower, allowing the first valve plate 4023 to be pushed by the external air pressure and open toward the side facing the air chamber 200, allowing outside air to enter the air chamber 200 through the air inlet 4022.

[0039] Specifically, the sealing ring 403 is located in the annular groove 4021 on the piston head 402, which can provide better sealing performance between the piston assembly 400 and the air chamber 200, prevent gas leakage, and ensure that the gas inside the air chamber 200 is effectively compressed and processed.

[0040] refer to Figure 10 The air chamber 200 includes a cavity 202 and an end cap 204 connected to each other. One end of the cavity 202 is connected to the protective shell 100, and the other end is connected to the end cap 204. The end cap 204 is provided with an air outlet 2041. The piston head 402 is located inside the cavity 202. A one-way valve 203 is provided between the end cap 204 and the cavity 202.

[0041] The cavity 202 is used to accommodate the piston head 402 for a longer stroke, so as to better compress the gas in the air chamber 200. An end cap 204 is provided on the side of the cavity 202 away from the protective shell 100. The end cap 204 has an outlet 2041 for transmitting compressed gas to the outside. A one-way valve 203 is provided between the cavity 202 and the end cap 204. The one-way valve 203 enables the gas to flow in one direction in the air chamber 200, so that the compressed gas in the air chamber 200 can flow to the end cap 204 through the one-way valve 203 and flow out through the outlet 2041. At the same time, it can prevent outside air from entering the cavity 202, ensuring that the gas can only flow in the predetermined direction, preventing gas backflow or leakage, and improving the efficiency of the air pump 1000.

[0042] The one-way valve 203 prevents unnecessary backflow of gas. In this embodiment, gas can only flow from the cavity 202 to the end cap 204 and be discharged through the outlet 2041, and cannot flow backward. This ensures the safe operation of the air pump 1000.

[0043] refer to Figure 10The one-way valve 203 includes a valve seat 2031 and a second valve plate 2033. The valve seat 2031 is provided with an opening 2032. The cavity 202 and the end cap 204 are respectively provided on opposite sides of the valve seat 2031. The second valve plate 2033 is provided on the side of the valve seat 2031 facing the end cap 204. One end of the second valve plate 2033 is fixed on the valve seat 2031, and the other end is provided to cover the opening 2032. The opening 2032 can communicate with the air outlet 2041.

[0044] The valve seat 2031 is connected to the cavity 202 and the end cap 204 on opposite sides. An opening 2032 is provided on the valve seat 2031. A second valve plate 2033 is disposed on the side of the valve seat 2031 facing the end cap 204. This allows compressed airflow to push the second valve plate 2033 towards the end cap 204, enabling the compressed airflow to enter the end cap 204 from the cavity 202 and exit through the outlet 2041, preventing backflow. When gas attempts to enter the cavity 202 from the end cap 204 side through the one-way valve 203, the compressed gas inside the cavity 202 applies pressure to the second valve plate 2033, preventing the gas from passing through the opening 2032, thus preventing air from flowing back into the cavity 202.

[0045] Specifically, one end of the second valve plate 2033 is fixed to the valve seat 2031, so that the second valve plate 2033 can be stably installed on the valve seat 2031, preventing it from being missing or falling off. The other end of the second valve plate 2033 covers the opening 2032, which can provide good sealing performance for the one-way valve 203.

[0046] refer to Figure 1 The piston assembly 400 includes a piston rod 401 and a piston head connected to each other. The air chamber 200 has a through hole 201 on the side facing the protective shell 100. One end of the piston rod 401 is connected to a slider 300, and the other end extends into the air chamber 200 through the through hole 201 so as to be slidably connected to the air chamber 200 through the piston head.

[0047] The piston assembly 400 includes a piston rod 401 and a piston head, enabling the piston assembly 400 to slide stably within the air chamber 200 for effective gas compression. The piston rod 401 is connected to the piston head located within the air chamber 200 via a through hole 201. The piston generates high pressure when compressing gas, thereby achieving effective gas compression, and the compressed gas is discharged through the outlet, thus enabling the air pump 1000 to stably and uniformly deliver gas.

[0048] The air chamber 200 is equipped with an air outlet, which allows the compressed gas to be released smoothly. The air outlet ensures that the compressed gas can be discharged quickly, which helps the air pump 1000 to operate continuously and the gas to be recycled.

[0049] refer to Figure 1 The protective shell 100 is provided with a receiving seat 101, and the air cavity 200 is provided on the receiving seat 101. The air cavity 200 is fixedly connected to the protective shell 100 through the receiving seat 101.

[0050] The mounting bracket 101 provides additional support and fixation, helping to enhance the structural stability of the entire air pump 1000. The fixed connection between the mounting bracket 101 and the protective housing 100 ensures that the air chamber 200 maintains a stable position during operation, reducing vibration and deformation of the air pump 1000.

[0051] The design of the receiving seat 101 helps to enhance the safety of the air pump 1000. The fixed connection between the receiving seat 101 and the protective shell 100 can effectively prevent the air chamber 200 from accidentally detaching or shifting, reduce the probability of accidents, and ensure the safety of operators and the air pump 1000.

[0052] refer to Figure 3 The sliding member 300 includes a connecting block 305 and a limiting ring 302 disposed at at least one end of the connecting block 305. One end of the piston rod 401 is fixedly connected to the limiting ring 302, and the first wheel teeth 301 are disposed on opposite sides of the connecting block 305.

[0053] The limiting ring 302 on the sliding member 300 is used to fix it to the piston rod 401, thereby enabling the connecting block 305 to drive the piston rod 401. The limiting ring 302 can restrict the position of the piston rod 401 and prevent unstable situations such as shaking or falling off during the movement of the piston rod 401. This helps to protect the normal operation of the piston assembly 400.

[0054] It is easy to see that the piston rod 401 is fixedly connected to the sliding member 300 via the limiting ring 302, which ensures a more secure and reliable connection between the piston rod 401 and the connecting block 305. This helps reduce the risk of failure caused by loose connections.

[0055] It should be noted that the limiting ring 302 and the connecting block 305 are integrally molded, which can improve the structural strength of the sliding part 300 and enhance the fixing and limiting effect on the piston rod 401.

[0056] refer to Figure 1 and Figure 5 When one end of the slider 300 is connected to the piston assembly 400, the rotary drive 505 is located on the side of the protective shell 100 away from the air chamber 200.

[0057] When only one end of the slider 300 is connected to the piston assembly 400, the rotary drive 505 is located on the side of the protective shell 100 opposite to the air chamber 200. On one hand, the rotary drive 505 can directly drive the first drive gear 501, allowing the piston assembly 400 to obtain a larger operating space and range, thereby better compressing the gas in the air chamber 200. On the other hand, having one side of the protective shell 100 connected to the air chamber 200 and the opposite side connected to the rotary drive 505 can balance the weight distribution of the air pump 1000.

[0058] Further, refer to Figure 5 and Figure 7 When one end of the sliding member 300 is connected to the piston assembly 400, the first drive gear 501 is a bevel gear. The drive assembly 500 also includes a first transmission gear 601 and a second transmission gear 602. The first transmission gear 601 is provided with a third gear tooth 6011 and a fourth gear tooth 6012 in layers. The third gear tooth 6011 meshes with the first drive gear 501, and the fourth gear tooth 6012 meshes with the second transmission gear 602. The two second drive gears 502 mesh with the second transmission gear 602 respectively.

[0059] In embodiments where only one end of the slider 300 is connected to the piston assembly 400, the first drive gear 501 is a bevel gear. The drive assembly 500 also includes a first transmission gear 601 and a second transmission gear 602. The first transmission gear 601 needs to mesh simultaneously with both the bevel gear 501 and the second transmission gear 602. Therefore, the first transmission gear 601 has a third gear tooth 6011 that meshes with the first drive gear 501, and a fourth gear tooth 6012 that meshes with the second transmission gear 602, to transmit power from the first drive gear 501 to the second transmission gear 602. The second transmission gear 602 meshes with the second drive gear 502, ultimately transmitting power from the first drive gear 501 to the second drive gear 502, thus driving the slider 300 to move. This structure of the first transmission gear 601 improves the transmission efficiency of the drive assembly 500, reduces energy loss, and thus improves the overall efficiency of the air pump 1000.

[0060] In the aforementioned configuration, the first drive gear 501 is a bevel gear, which helps improve transmission efficiency. The bevel gear design reduces meshing losses between gears, lowers energy loss, and increases transmission efficiency. Furthermore, the bevel gear can change the direction of force transmission, ultimately driving the piston assembly 400 to perform reciprocating linear motion with less energy loss.

[0061] It should be noted that, in order to cooperate with the first drive gear 501 of the bevel gear structure, the third gear tooth 6011 on the first transmission gear 601 is also a bevel tooth.

[0062] Specifically, through the design of the multi-stage transmission drive assembly 500, more precise power control can be achieved, making the movement of the piston assembly 400 more accurate and controllable, suitable for applications requiring high-precision motion.

[0063] Meanwhile, the first transmission gear 601 is provided with a third gear tooth 6011 and a fourth gear tooth 6012 for different purposes, which can help reduce the size of the first transmission gear 601 and save space.

[0064] Further, refer to Figure 5 When one end of the sliding member 300 is connected to the piston assembly 400, a fixing rod 102 is also provided inside the protective shell 100. A sliding sleeve 303 is provided on the side of the sliding member 300 facing the fixing rod 102. The sliding sleeve 303 is slidably connected to the fixing rod 102. The sliding member 300 is slidably connected to the fixing rod 102 through the sliding sleeve 303.

[0065] Because at least one side of the slider 300 is connected to the piston assembly 400, a piston assembly 400 is provided on one side of the slider 300. At this time, only one side of the piston assembly 400 provides support for the slider 300. To prevent instability during sliding, a fixing rod 102 is provided inside the protective shell 100, and a sliding sleeve 303 is provided on the slider 300 for sliding connection with the fixing rod 102. The slider 300 achieves a certain degree of support and connection stability through the sliding connection between the sliding sleeve 303 and the fixing rod 102. Furthermore, the sliding connection between the sliding sleeve 303 and the fixing rod 102 guides the sliding movement of the slider 300, ensuring that the slider 300 moves in the correct direction and angle. Therefore, the setting of the fixed rod 102 and the sliding sleeve 303 can reduce the swinging and shaking of the sliding member 300 during the movement when the sliding member 300 is connected to only one piston assembly 400, and keep the movement trajectory of the sliding member 300 stable, which helps to ensure the normal operation of the air pump 1000.

[0066] It is easy to see that by sliding the sleeve 303 to the fixed rod 102, the friction between the piston rod 401 and the fixed rod 102 can be reduced. This helps to reduce the energy loss of the air pump 1000, improve the efficiency of operation, and extend the service life of the components.

[0067] The fixing rod 102 provides additional support and protection, preventing the sliding component 300 from being subjected to external interference or damage during operation. This helps ensure the stability and safety of the air pump 1000.

[0068] It should be noted that one or more sliding sleeves 303 can be set on the slider 300.

[0069] refer to Figure 1 and Figure 5 When piston assemblies are connected to both ends of the sliding member, the air chambers are located on opposite sides of the protective shell, and the rotary drive member is located on one side of one of the adjacent air chambers of the protective shell.

[0070] When piston rods 401 are connected to both ends of the slider 300, the rotary drive 505 is located at the bottom of the protective shell 100. This structural layout may help improve the structural stability of the air pump 1000. Connecting piston assemblies 400 to opposite ends of the slider 300 and placing the rotary drive 505 at the bottom of the protective shell 100 can balance the weight distribution of the air pump 1000 and improve its stability.

[0071] Further, refer to Figure 4 When piston assemblies 400 are connected to opposite sides of the sliding member 300, the drive assembly 500 also includes a first linkage gear 503 and a second linkage gear 504 coaxially arranged. The first linkage gear 503 is located inside the protective shell 100 and is meshed with the first drive gear 501. The two second drive gears 502 are meshed with the second linkage gear 504 respectively.

[0072] The air pump 1000 also includes a first linkage gear 503 and a second linkage gear 504, which are coaxially arranged, meaning that the first linkage gear 503 and the second linkage gear 504 have the same angle. Therefore, in actual use, the first linkage gear 503 meshes with the first drive gear 501, causing the first drive gear 501 to drive the first linkage gear 503 and the second linkage gear 504 to rotate. The second linkage gear 504 meshes with two second drive gears 502, so the second linkage gear 504 can drive the two second drive gears 502 to rotate at the angular velocity of the first drive gear 501. This ensures that the two second drive gears 502 have the same driving speed, enabling stable and continuous driving of the sliding member 300 in reciprocating linear motion, ultimately achieving continuous driving of the piston assembly 400, which helps ensure the efficient operation of the air pump 1000.

[0073] The second linkage gear 504 is coaxially arranged with the first linkage gear 503, so the angular velocities of the second linkage gear 504 and the first linkage gear 503 are the same, both being the angular velocities of the first drive gear 501. This helps maintain the overall balance and stability of the transmission air pump 1000 and improves the smoothness of the air pump 1000's operation.

[0074] On the other hand, because the radii of the first linkage gear 503 and the second linkage gear 504 are not the same, their linear velocities are also different. In this case, the first linkage gear 503, with its larger radius, has a higher linear velocity, while the second linkage gear 504, with its smaller radius, has a lower linear velocity. This reduces the force borne by the second linkage gear 504, thus reducing its friction and wear to some extent. Simultaneously, the second linkage gear 504, with its lower linear velocity, experiences less energy loss, thereby improving the transmission efficiency and stability of the drive assembly 500.

[0075] refer to Figure 1 and Figure 6 The protective shell 100 is provided with a fixed post 103, and the rotating shaft 5021 is rotatably connected to the fixed post 103. The second drive gear 502 is rotatably connected to the protective shell 100 through the rotating shaft 5021.

[0076] The rotating shaft 5021 is rotatably connected to the top of the protective shell 100 via the fixing post 103. This connection method helps to enhance the structural stability of the air pump. The fixing post 103 supports the rotating shaft 5021, reduces the vibration and deformation of the air pump, and improves the overall stability of the air pump.

[0077] It should be understood that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some of the technical features; and all such modifications and substitutions should fall within the protection scope of the appended claims of this utility model.

Claims

1. An air pump, characterized in that, include: A protective shell, wherein at least one side of the protective shell is provided with an air cavity; A sliding member is disposed within the protective shell. At least one end of the sliding member is connected to a piston assembly, and the piston assembly is slidably connected to the air chamber to compress the gas in the air chamber. First gear teeth are respectively provided on opposite sides of the sliding member. The drive assembly includes a rotary drive member disposed on one side of the protective shell, a first drive gear, and two second drive gears. The first drive gear is drivenly connected to the rotary drive member and is located inside the protective shell. The first drive gear is transmittedly connected to the two second drive gears respectively. The two second drive gears are located on opposite sides of the sliding member and are rotatably connected to the protective shell. The second drive gear includes a sector tooth portion, which meshes with the first tooth portion, so that one of the second drive gears drives the slider to move to the left, and the other second drive gear drives the slider to move to the right.

2. The air pump according to claim 1, characterized in that, The second drive gear includes a rotating shaft and a second gear tooth portion disposed on the rotating shaft. The sector-shaped gear tooth portion is coaxially disposed with the second gear tooth portion. The second gear tooth portion is drivenly connected to the first drive gear, and the sector-shaped gear tooth portion is meshed with the first gear tooth portion.

3. The air pump according to claim 2, characterized in that, The sliding member is a connecting rod, and the first gear teeth are located on opposite sides of the connecting rod, with the first gear teeth on one side being misaligned with the first gear teeth on the other side; the piston assembly includes a piston head and a sealing ring, the piston head is located in the air chamber, the two ends of the connecting rod are respectively connected to the piston head, the piston head is provided with an annular receiving groove, the sealing ring is located in the receiving groove, the piston head is also provided with an air inlet, and the end of the piston head opposite to the connecting rod is provided with a first valve plate corresponding to the air inlet, one end of the first valve plate is fixedly connected to the piston head, and the other end covers the air inlet.

4. The air pump according to claim 3, characterized in that, The air chamber includes an interconnected cavity and an end cap. One end of the cavity is connected to the protective shell, and the other end is connected to the end cap. The end cap is provided with an air outlet. The piston head is located in the cavity. A one-way valve is provided between the end cap and the cavity. The one-way valve includes a valve seat and a second valve plate. The valve seat has an opening. The cavity and the end cap are respectively located on opposite sides of the valve seat. The second valve plate is located on the side of the valve seat facing the end cap. One end of the second valve plate is fixed to the valve seat, and the other end covers the opening. The opening can communicate with the air outlet.

5. The air pump according to claim 2, characterized in that, The piston assembly includes a piston rod and a piston head connected to each other. The air chamber has a through hole on the side facing the protective shell. One end of the piston rod is connected to the sliding member, and the other end extends through the through hole into the air chamber to be slidably connected to the air chamber via the piston head. The sliding member includes a connecting block and a limiting ring disposed at at least one end of the connecting block. One end of the piston rod is fixedly connected to the limiting ring, and the first gear teeth are disposed on opposite sides of the connecting block.

6. The air pump according to claim 2, characterized in that, The protective shell is provided with a receiving seat, and the air cavity is disposed on the receiving seat. The air cavity is fixedly connected to the protective shell through the receiving seat.

7. The air pump according to claim 5 or 6, characterized in that, When one end of the slider is connected to the piston assembly, the rotary drive is located on the side of the protective shell away from the air chamber.

8. The air pump according to claim 7, characterized in that, The first drive gear is a bevel gear. The drive assembly also includes a first transmission gear and a second transmission gear. The first transmission gear has a third gear tooth section and a fourth gear tooth section in layers. The third gear tooth section meshes with the first drive gear, and the fourth gear tooth section meshes with the second transmission gear. The two second drive gears mesh with the second transmission gear respectively.

9. The air pump according to claim 7, characterized in that, The protective shell is also provided with a fixing rod, and the sliding member is provided with a sliding sleeve on the side facing the fixing rod. The sliding sleeve is slidably connected to the fixing rod, and the sliding member is slidably connected to the fixing rod through the sliding sleeve.

10. The air pump according to claim 5 or 6, characterized in that, When the piston assembly is connected to both ends of the slider, the air chambers are located on opposite sides of the protective shell, and the rotary drive is located on one side of the protective shell adjacent to one of the air chambers. The drive assembly further includes a first linkage gear and a second linkage gear arranged coaxially. The first linkage gear is located inside the protective shell and is meshed with the first drive gear. The two second drive gears are respectively meshed with the second linkage gear.

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