air pump

Abstract

This invention provides an air pump. The air pump includes a housing and an inflation component, the inflation component being movably disposed on the housing; the inflation component has a working state protruding from the housing and a retracted state within the housing. The air pump provided by this invention houses the inflation component inside the housing, making full use of the internal space of the air pump, effectively reducing the size of the air pump, achieving the goal of a compact and portable air pump, while also avoiding the problem of easy loss or damage to the inflation component when stored separately, effectively ensuring the reliability of the inflation component and the air pump.

Description

Technical Field

[0001] This invention relates to the field of inflation equipment technology, and in particular to an inflation pump. Background Technology

[0002] With the continuous growth of car ownership in my country, the market for air pumps is expanding. There are many types of air pumps, and most are relatively large with long inflation components. Current technology typically uses a detachable connection of the inflation component to the outer casing. When not in use, the inflation component is removed and stored separately, making it prone to loss, damage from foreign objects, or even aging and breakage, thus reducing the reliability of the air pump. Summary of the Invention

[0003] In order to solve the technical problem that the unreliable storage of the inflation components in the prior art leads to a decrease in the reliability of the air pump, an air pump is provided that stores the inflation components in the outer shell to ensure the structural reliability of the inflation components.

[0004] An air pump, comprising:

[0005] shell;

[0006] An inflation assembly, which is movably disposed on the housing;

[0007] The inflatable component has a working state protruding from the outer shell and a retracted state retracted into the outer shell.

[0008] The air pump also includes a snap-fit ​​structure, which is disposed on the outer shell, and when the inflation component is in the working state and / or in the storage state, the snap-fit ​​structure engages with the inflation component.

[0009] The air pump also includes a sleeve disposed inside the housing. The air inflation component is movably disposed inside the sleeve. In the retracted state, the air inflation component is located inside the sleeve. In the working state, part or all of the air inflation component extends out of the sleeve. The snap-fit ​​structure is disposed inside the sleeve.

[0010] The snap-fit ​​structure includes a snap-fit ​​claw, the first end of which is disposed on the sleeve, and the second end of which can be interference-fitted with the inflation component.

[0011] The number of the claws is at least two, and all the claws are arranged in a ring around the inflation component. In the working state and the stored state, the second end of all the claws is interference-fitted with the inflation component.

[0012] The snap-fit ​​structure also includes an adjustment mechanism, which is disposed inside the sleeve and is capable of adjusting the position of the second end of the snap-fit ​​claw.

[0013] The adjustment mechanism includes an adjustment ring that surrounds the inflation assembly and is positioned between the claw and the inflation assembly. The adjustment ring is movable relative to the claw to adjust the position of the second end of the claw.

[0014] The adjustment mechanism also includes a connector, one end of which is disposed on the adjustment ring, and the other end of which protrudes from the outer shell.

[0015] The connector is provided with a slot, which corresponds one-to-one with the claw, and the second end of the claw is interference-fitted with the inflation component through the slot.

[0016] The snap-fit ​​structure further includes a snap-fit ​​ring, which is disposed on the sleeve and surrounds the inflation assembly. The first end of the claw is connected to the snap-fit ​​ring.

[0017] The inner surface of the sleeve is provided with an installation groove, and the snap ring is disposed in the installation groove.

[0018] The air pump also includes a sealing structure located between the sleeve and the air inflation assembly.

[0019] The air pump also includes a cylinder, which is disposed inside the housing, and the exhaust port of the cylinder is connected to the sleeve.

[0020] The air pump provided by this invention houses the inflation component inside the outer shell, making full use of the internal space of the air pump, effectively reducing the size of the air pump, and achieving the purpose of a compact and portable air pump. At the same time, it can also avoid the problem of the inflation component being easily lost or damaged when stored separately, effectively ensuring the reliability of the inflation component and the air pump. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of an air pump provided in an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of an air pump provided in an embodiment of the present invention;

[0023] Figure 3 A cross-sectional view of an air pump provided in an embodiment of the present invention;

[0024] Figure 4 for Figure 3 A partial schematic diagram of point A;

[0025] Figure 5 Another cross-sectional view of the air pump provided in an embodiment of the present invention;

[0026] Figure 6 An exploded view of the snap-fit ​​structure provided in an embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of the structure during the process of the adjusting ring driving the second end of the chuck to move, as provided in an embodiment of the present invention.

[0028] In the picture:

[0029] 1. Outer shell; 2. Inflation assembly; 3. Snap-fit ​​structure; 4. Sleeve; 31. Claw; 32. Adjusting ring; 33. Connector; 34. Snap-fit ​​ring; 5. Sealing structure; 6. Cylinder. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the invention.

[0031] like Figures 1 to 7 The air pump shown includes: a housing 1; and an inflation component 2, which is movably mounted on the housing 1. The inflation component 2 has a working state protruding from the housing 1 and a retracted state within the housing 1. By storing the inflation component 2 inside the housing 1, the internal space of the air pump is fully utilized, effectively reducing the size of the air pump and achieving a compact and portable design. This also avoids the problem of the inflation component 2 being easily lost or damaged when stored separately, effectively ensuring the reliability of both the inflation component 2 and the air pump. Figure 1 and Figure 5 A schematic diagram showing the inflatable component 2 in its working state; Figures 2 to 4 This is a schematic diagram of the structure of the inflatable component 2 in its stowed state.

[0032] When the air pump is needed, the inflation component 2 is pulled out from the inside of the outer shell 1 to switch the inflation component 2 to the working state. At this time, the air from the air pump can be delivered to the object to be inflated through the inflation component 2, which facilitates the connection between the air pump and the object to be inflated. When the air pump is not needed, the inflation component 2 is put into the inside of the outer shell 1 to store the inflation component 2, thereby reducing the size of the air pump and achieving the purpose of making the air pump compact and portable. At the same time, it can also avoid the problem of the inflation component 2 being easily lost or damaged when stored separately, effectively ensuring the reliability of the inflation component 2 and the air pump.

[0033] The air pump further includes a snap-fit ​​structure 3, which is disposed on the outer shell 1. When the inflation component 2 is in the working state and / or in the retracted state, the snap-fit ​​structure 3 engages with the inflation component 2. That is, the snap-fit ​​structure 3 restricts the movement of the inflation component 2, thereby ensuring that the inflation component 2 can reliably be in the working or retracted state. This avoids the problem of unreliable inflation caused by movement of the inflation component 2 in the working state, and also prevents the inflation component 2 from protruding from the outer shell 1 in the retracted state, thus preventing damage or loss and ensuring the reliability of both the inflation component 2 and the air pump.

[0034] Optionally, the inflation assembly 2 includes an inflation tube and an air nozzle. The air nozzle is connected to one end of the connecting tube. When the inflation assembly 2 is in the working state, the snap-fit ​​structure 3 snaps into the part of the connecting tube away from the air nozzle. When the inflation assembly 2 is in the storage state, the snap-fit ​​structure 3 snaps into the air nozzle or the part of the connecting tube connected to the air nozzle.

[0035] Optionally, the inflation tube includes a connecting portion and a first snap-fit ​​portion and a second snap-fit ​​portion located at both ends of the connecting portion. When the inflation assembly 2 is in the working state and the retracted state, the first snap-fit ​​portion is located inside the sleeve 4. In the working state, the snap-fit ​​structure 3 engages with the first snap-fit ​​portion; in the retracted state, the snap-fit ​​structure 3 engages with the second snap-fit ​​portion. The outer diameters of both the first and second snap-fit ​​portions are larger than the outer diameter of the connecting portion.

[0036] In one embodiment, the air pump further includes a sleeve 4, which is disposed within the outer casing 1. The inflation component 2 is movably disposed within the sleeve 4. In the retracted state, the inflation component 2 is located within the sleeve 4. In the operating state, part or all of the inflation component 2 extends out of the sleeve 4. The snap-fit ​​structure 3 is disposed within the sleeve 4. The sleeve 4 ensures gas flow within the outer casing 1, thus forming part of the gas output channel of the air pump. Simultaneously, the sleeve 4 provides storage space for the inflation component 2, ensuring that the inflation component 2 can be reliably stored within the outer casing 1.

[0037] The locking structure 3 includes a claw 31. The first end of the claw 31 is mounted on the sleeve 4, and the second end of the claw 31 can be press-fitted with the inflation component 2. When the second end of the claw 31 is press-fitted with the inflation component 2, a squeezing force is generated between the claw 31 and the inflation component 2, resulting in friction. This friction allows the inflation component 2 to remain relatively stationary with respect to the sleeve 4 (outer shell 1), ensuring the reliable position of the inflation component 2. When it is necessary to move the inflation component 2, the second end of the claw 31 can be disengaged from the inflation component 2, allowing the inflation component 2 to move smoothly and enabling switching between working and stored states.

[0038] Since the first end of the claw 31 is set on the sleeve 4, and the second end of the claw 31 abuts against the inflation component 2, the distance between the claw 31 and the inflation component 2 gradually decreases along the direction from the first end of the claw 31 to the second end of the claw 31.

[0039] Taking the claw 31 as a flat plate as an example, the plane where the claw 31 is located has an angle with the axis of the inflation component 2. The inclined claw 31 can reliably generate a squeezing force with the inflation component 2, thereby restricting the movement of the inflation component 2.

[0040] Optionally, the claw 31 can also be arc-shaped, with the arc-shaped opening facing the interior of the inflation assembly 2.

[0041] Optionally, the number of the claws 31 is at least two, and all the claws 31 are arranged in a ring around the inflatable component 2. In both the working state and the stored state, the second end of all the claws 31 is in an interference fit with the inflatable component 2. The multiple claws 31 generate compressive and frictional forces at different positions on the inflatable component 2, increasing the fixing effect of the locking structure 3 on the inflatable component 2.

[0042] Preferably, there is an angle between the central axes L1 of two adjacent claws 31, the vertex B of which is located on the central axis L of the inflatable component 2, and all the angles are equal, so that the resultant force of the squeezing force of all the claws 31 on the inflatable component 2 is zero, thereby preventing the claws 31 from causing the inflatable component 2 to shift and thus preventing it from switching smoothly between the working state and the storage state.

[0043] The locking structure 3 also includes an adjustment mechanism, which is disposed within the sleeve 4 and can adjust the position of the second end of the claw 31. The adjustment mechanism controls whether the second end of the claw 31 is in an interference fit with the inflation assembly 2, thereby controlling whether the inflation assembly 2 can move as needed, ensuring the reliable fixation of the inflation assembly 2.

[0044] The adjusting mechanism includes an adjusting ring 32, which surrounds the inflation assembly 2 and is positioned between the claw 31 and the inflation assembly 2. The adjusting ring 32 is movable relative to the claw 31 to adjust the position of the second end of the claw 31. When the adjusting ring 32 moves toward the second end of the claw 31, it compresses the claw 31, causing the second end of the claw 31 to move away from the inflation assembly 2. This means the second end of the claw 31 opens radially along the adjusting ring 32, disengaging it from the inflation assembly 2 and ensuring the inflation assembly 2 can move. Conversely, when the adjusting ring 32 moves toward the first end of the claw 31, the compressive force on the claw 31 decreases, and the second end of the claw 31 gradually approaches the inflation assembly 2, eventually abutting against it, thus securing the inflation assembly 2.

[0045] To facilitate the movement of the adjusting ring 32, the adjusting mechanism also includes a connector 33. One end of the connector 33 is disposed on the adjusting ring 32, and the other end of the connector 33 protrudes from the outer shell 1. The user can use the end of the connector 33 protruding from the outer shell 1 to drive the adjusting ring 32 to move, thereby controlling whether the claw 31 fixes the inflation assembly 2.

[0046] Specifically, the connector 33 is provided with a slot, which corresponds one-to-one with the claw, and the second end of the claw is interference-fitted with the inflation component 2 through the slot.

[0047] The snap-fit ​​structure 3 further includes a snap-fit ​​ring 34, which is disposed on the sleeve 4 and surrounds the inflation assembly 2. The first end of the claw 31 is connected to the snap-fit ​​ring 34. The snap-fit ​​ring 34 facilitates the connection between the claw 31 and the sleeve 4.

[0048] When the user needs to inflate, the user can pull out the inflation component 2. The inflation component 2 gradually protrudes outward from the outer shell 1, and eventually the air inlet end of the inflation component 2 moves towards the second end of the claw 31. The end of the connector 33 protruding from the outer shell 1 drives the adjusting ring 32 to move, thereby controlling the claw 31 to fix the air inlet end of the inflation component 2. When the user needs to store the inflation component 2, the user can pull up the end of the connector 33 protruding from the outer shell 1, thereby driving the adjusting ring 32 towards the second end of the claw 31. The adjusting ring 32 squeezes the second end of the claw 31, causing the second end of the claw 31 to open radially along the adjusting ring 32. The second end of the claw 31 disengages from the inflation component 2, and the inflation component 2 can move freely within the sleeve 4. The air inlet end of the inflation component 2 can be pushed back to the bottom of the sleeve 4. At this time, the size of the inflation end of the inflation component 2 protruding from the outer shell 1 will be greatly reduced, realizing the storage of the air tube.

[0049] Specifically, a mounting groove is provided on the inner surface of the sleeve 4, and the snap-fit ​​ring 34 is disposed in the mounting groove. The mounting groove facilitates the fixing of the snap-fit ​​ring 34, and at the same time, it can also prevent the snap-fit ​​ring 34 from affecting the movement of the inflation component 2 within the sleeve 4, ensuring the reliable movement of the inflation component 2.

[0050] The outer diameter of the connecting part of the air tube is smaller than the inner diameter of the adjusting ring 32, so as to ensure that the adjusting ring 32 and the connecting part of the air tube will not affect each other and can slide independently; while the outer diameter of the first locking part of the air tube is larger than the inner diameter of the locking ring 34. The locking ring 34 is used to limit the movement distance of the air tube, so as to ensure that the air tube will not slip out of the sleeve 4 and cause problems such as loss.

[0051] The outer diameter of the adjusting ring 32 is smaller than the inner diameter of the snap ring 34, so that the adjusting ring 32 can move between the first end and the second end of the snap claw 31.

[0052] The outer diameter of the adjusting ring 32 is smaller than the inner diameter of the sleeve 4, ensuring that the adjusting ring 32 can move freely within the sleeve 4, thereby adjusting the position of the second end of the chuck 31.

[0053] To ensure that there is no air leakage between the sleeve 4 and the inflation assembly 2, the air pump also includes a sealing structure 5, which is located between the sleeve 4 and the inflation assembly 2. Figure 2 As shown, the sealing structure 5 is a sealing ring, which surrounds the inflation assembly 2.

[0054] Preferably, the sealing structure 5 is disposed in the mounting groove, and the mounting structure 5 is used to further compress the snap ring 34, thereby increasing the fixing reliability of the snap ring 34 in the mounting groove.

[0055] The air pump also includes a cylinder 6, which is disposed inside the outer casing 1, and the exhaust port of the cylinder 6 is connected to the sleeve 4. The connection method between the exhaust port of the cylinder 6 and the sleeve 4 includes, but is not limited to, threaded connection, snap-fit, or welding.

[0056] The air pump also includes a piston and a piston drive mechanism. The piston reciprocates within the cylinder 6 to achieve the action of drawing in and compressing air, thereby generating gas pressure and pumping in the object to be filled.

[0057] Specifically, the piston drive mechanism includes a drive motor and a cam mechanism. The piston is connected to the drive motor through the cam mechanism, and the cam mechanism converts the rotation of the drive motor into the linear motion of the piston.

[0058] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. An air pump, characterized in that: include: Outer shell (1); An inflation assembly (2) is movably disposed on the outer shell (1); The inflatable component (2) has a working state protruding from the outer shell (1) and a storage state retracted into the outer shell (1); The air pump also includes a snap-fit ​​structure (3), which is disposed on the outer shell (1) and engages with the air pump when the air pump assembly (2) is in the working state and in the storage state. The inflation assembly (2) includes an inflation tube and an air nozzle. The air nozzle is connected to one end of the inflation tube. When the inflation assembly (2) is in working condition, the snap-fit ​​structure (3) engages with the part of the inflation tube away from the air nozzle. When the inflation assembly (2) is in storage condition, the snap-fit ​​structure (3) engages with the air nozzle or with the part of the inflation tube connected to the air nozzle. The air pump also includes a sleeve (4), which is disposed inside the outer shell (1). The air inflation component (2) is movably disposed inside the sleeve (4). In the retracted state, the air inflation component (2) is located inside the sleeve (4). In the working state, part or all of the air inflation component (2) extends out of the sleeve (4). The snap-fit ​​structure (3) is disposed inside the sleeve (4). The inflation tube includes a connecting part and a first snap-fit ​​part and a second snap-fit ​​part located at both ends of the connecting part. When the inflation component (2) is in the working state and the storage state, the first snap-fit ​​part is located inside the sleeve (4). In the working state, the snap-fit ​​structure (3) engages with the first snap-fit ​​part. In the storage state, the snap-fit ​​structure (3) engages with the second snap-fit ​​part. The outer diameter of the first snap-fit ​​part and the outer diameter of the second snap-fit ​​part are both larger than the outer diameter of the connecting part. The snap-fit ​​structure (3) includes a claw (31), the first end of which is disposed on the sleeve (4), and the second end of which can be interference-fitted with the inflation assembly (2); The snap-fit ​​structure (3) further includes a snap-fit ​​ring (34), which is disposed on the sleeve (4) and surrounds the inflation assembly (2). The first end of the claw (31) is connected to the snap-fit ​​ring (34). The outer diameter of the first snap-fit ​​portion of the inflation tube is larger than the inner diameter of the snap-fit ​​ring (34).

2. The air pump according to claim 1, characterized in that: The number of the claws (31) is at least two, and all the claws (31) are arranged in a ring around the inflation component (2). In the working state and the storage state, the second end of all the claws (31) is in an interference fit with the inflation component (2).

3. The air pump according to claim 1 or 2, characterized in that: The snap-fit ​​structure (3) also includes an adjustment mechanism, which is disposed inside the sleeve (4) and is capable of adjusting the position of the second end of the claw (31).

4. The air pump according to claim 3, characterized in that: The adjustment mechanism includes an adjustment ring (32) which surrounds the inflation assembly (2) and is disposed between the claw (31) and the inflation assembly (2). The adjustment ring (32) is movable relative to the claw (31) to adjust the position of the second end of the claw (31).

5. The air pump according to claim 4, characterized in that: The adjustment mechanism also includes a connector (33), one end of which is disposed on the adjustment ring (32), and the other end of which protrudes from the outer shell (1).

6. The air pump according to claim 5, characterized in that: The connector (33) is provided with a slot, which corresponds one-to-one with the claw, and the second end of the claw is press-fitted with the inflation component (2) through the slot.

7. The air pump according to claim 1, characterized in that: The inner surface of the sleeve (4) is provided with an installation groove, and the snap ring (34) is disposed in the installation groove.

8. The air pump according to claim 1, characterized in that: The air pump also includes a sealing structure (5) located between the sleeve (4) and the air inflation assembly (2).

9. The air pump according to claim 1, characterized in that: The air pump also includes a cylinder (6), which is disposed inside the housing (1), and the exhaust port of the cylinder (6) is connected to the sleeve (4).

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