Inflator for inflatable products

Abstract

The utility model discloses an inflator for inflating product belongs to inflating device technical field, and it includes the cylinder, the inflator and the piston structure. Its innovation lies in setting up the oil absorption cotton structure, and this oil absorption cotton can be installed in two positions: one is on the piston structure, and specifically can be set in the positioning groove of piston or the annular groove specially, is located the rubber ring inside, two is the bottom of the cylinder. The piston structure includes the support disc with the positioning groove and the annular groove and the rubber ring with the inverted L type section. The oil absorption cotton can be annular or circular, and can be provided with tail strip to facilitate replacement. The utility model prolongs the service life of inflator, improves the inflating cleanliness through the effective adsorption and slow -release lubricating oil of oil absorption cotton, reduces the friction wear and oil spill, is especially suitable for the product such as inflating toy.

Description

Technical Field

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

[0002] An air pump is a common inflation tool widely used for inflating bicycles, balloons, inflatable toys, and other products. A traditional air pump typically consists of a cylinder, a pump rod, and a piston structure. The reciprocating motion of the piston within the cylinder compresses and delivers the gas.

[0003] However, in actual use, a good seal needs to be maintained between the piston and the inner wall of the cylinder, which is usually achieved using a rubber ring. To reduce friction and wear, lubricant is typically applied between the rubber ring and the cylinder wall. However, lubricant can easily leak out or contaminate inflatable products during use, especially in applications such as inflatable toys where cleanliness is critical. Oil stains can cause product contamination or a decline in user experience.

[0004] Furthermore, after prolonged use, oil and dust tend to accumulate at the bottom of the air pump, affecting its pumping efficiency and lifespan. Therefore, it is necessary to provide an air pump structure that can effectively absorb and retain lubricating oil, reduce oil spillage, and keep the air pump clean. Utility Model Content

[0005] The purpose of this invention is to provide an air pump for inflatable products. By setting an oil-absorbing cotton structure, it can effectively absorb and retain lubricating oil, reduce oil spillage, extend the service life of the air pump, and improve the cleanliness of the inflation process.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An air pump for inflatable products includes a cylinder and an air rod, the air rod being located inside the cylinder and having the freedom to move along the central axis of the cylinder; one end of the air rod is provided with a piston structure; it also includes oil-absorbing cotton; the oil-absorbing cotton is installed at at least one of the following locations: Installation location one: The oil-absorbing cotton is placed on the piston structure; Installation position two: The oil-absorbing cotton is located at the bottom of the cylinder.

[0007] Furthermore, the piston structure includes a support plate and a rubber ring; the outer circumference of the support plate is provided with a positioning groove, and the lower edge of the positioning groove is provided with an opening; the rubber ring is located in the positioning groove.

[0008] Furthermore, in installation position one, the oil-absorbing cotton is annular, located in the positioning groove of the piston structure, and situated inside the rubber ring.

[0009] Furthermore, the support plate is also provided with an annular groove, which is located below the positioning groove; the outer edge of the rubber ring is provided with an annular retaining edge integrally formed therewith, forming a structure with an inverted L-shaped cross section; the annular groove is located inside the annular retaining edge. In the case of installation position one, the oil-absorbing cotton is ring-shaped, placed in the annular groove, and located inside the annular retaining edge.

[0010] Furthermore, the oil-absorbing cotton is provided with a tail strip, the end of which passes through a hole provided on the support plate and extends out from the bottom of the support plate.

[0011] Furthermore, in the second installation method, the oil-absorbing cotton is round and placed at the bottom of the cylinder.

[0012] Furthermore, it also includes a handle; the handle is installed at the other end of the air pump; the handle includes a grip part and a receiving part; there are two grip parts, each grip part is a cylindrical structure with a cavity inside, one end is connected to the receiving part, and the other end is provided with a pressure cap that is threadedly connected to it.

[0013] Furthermore, the two grips are located on the same straight line and are respectively connected to the two sides of the receiving part.

[0014] The beneficial effects of adopting the above-mentioned optimized technical solution are as follows: 1. Effective adsorption and retention of lubricating oil: By setting oil-absorbing cotton at the bottom of the piston structure or cylinder, lubricating oil can be effectively adsorbed and stored, preventing lubricating oil from being lost or overflowing during the air pumping process, and maintaining a long-lasting lubrication effect.

[0015] 2. Reduce oil pollution: Oil-absorbing cotton can control the release of lubricating oil and reduce oil pollution of inflatable products, making it especially suitable for inflatable toys and other products with high cleanliness requirements.

[0016] 3. Extend service life: Oil-absorbing cotton can reduce dry friction between the piston and the cylinder wall, reduce wear, and extend the service life of the air pump.

[0017] 4. Simple structure and easy to implement: The oil-absorbing cotton can be installed flexibly and can be integrated into the existing piston structure or the bottom of the cylinder without affecting the overall structure and ease of operation of the air pump.

[0018] 5. User-friendly handle design: The handle adopts a double-cylinder structure, and the internal cavity can store spare inflatable tools, improving the product's practicality and portability. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the air pump of this utility model.

[0020] Figure 2This is a schematic diagram of the support plate according to Embodiment 1 of this utility model.

[0021] Figure 3 for Figure 2 A bottom view.

[0022] Figure 4 yes Figure 2 Top view.

[0023] Figure 5 This is a schematic diagram of the support plate in Example 2.

[0024] Figure 6 for Figure 5 A bottom view.

[0025] Figure 7 This is a schematic diagram of the structure of the rubber ring in Example 2.

[0026] Figure 8 for Figure 7 A schematic diagram of the cross-sectional structure.

[0027] Figure 9 This is a schematic diagram of the oil-absorbing cotton used in Examples 1 and 2.

[0028] Figure 10 This is a schematic diagram of the grip structure of this utility model.

[0029] In the diagram: 1. Cylinder body, 2. Air pump rod, 3. Piston structure, 4. Handle, 3-1. Support plate, 3-1-1. Positioning groove, 3-1-2. Protrusion, 3-1-3. Through hole, 3-1-4. Vent hole, 3-1-5. One-way valve installation position, 3-1-6. Opening type II, 3-1-7. Annular groove, 3-2. Rubber ring, 3-2-1. Outer edge, 3-3. Oil-absorbing cotton (annular), 3-3-1. Tail strip, 4-1. Receiving part, 4-2. Hand grip, 4-3. Pressure cap, 4-4. Air outlet. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are not limited to the following examples. Any modifications, additions, or equivalent substitutions made by those skilled in the art without departing from the principle of the present invention should be included within the protection scope of the present invention.

[0031] Example 1: Oil-absorbing cotton is placed in the positioning groove of the piston structure.

[0032] This embodiment provides an air pump for inflatable products, the structure of which is as follows: Figures 1 to 4 , Figure 9 and Figure 10 As shown, it includes a cylinder 1, an air pump 2, a piston structure 3, and a handle 4.

[0033] The air pump 2 is located inside the cylinder 1 and can reciprocate along the central axis of the cylinder. One end of the air pump 2 is equipped with a piston structure 3, and the other end is connected to the handle 4.

[0034] The piston structure 3 includes a support plate 3-1 and a rubber ring 3-2. The outer circumference of the support plate 3-1 has a positioning groove 3-1-1, and the lower edge of the positioning groove has an opening 3-1-6. The rubber ring 3-2 is installed in the positioning groove 3-1-1 to form a seal with the inner wall of the cylinder. The opening 3-1-6 is the area formed between the two protrusions 3-1-2.

[0035] Piston Structure Working Principle: When the user pushes the air pump lever 2 downwards using the handle 4 (inflating stroke), air pressure and friction act on the rubber ring 3-2, causing it to expand outwards and adhere tightly to the inner wall of the cylinder 1, forming an effective seal. This compresses the air downwards and pushes open the one-way valve at the bottom (located at 3-1-5) to enter the air pump, completing inflation through the outlet. When the air pump lever is pulled upwards (return stroke), the rubber ring 3-2 contracts towards the opening 3-1-6 under the action of friction and internal negative pressure. This increases the gap between the release space and the cylinder wall, reducing resistance, allowing external air to replenish the cavity below the piston through the opening 3-1-6, preparing for the next inflation.

[0036] In this embodiment, the oil-absorbing cotton 3-3 has a ring-shaped structure and is installed in the positioning groove 3-1-1 of the piston structure 3, located inside the rubber ring 3-2. The oil-absorbing cotton 3-3 has a tail strip 3-3-1, which passes through the through hole 3-1-3 on the support plate 3-1 and extends from the bottom of the support plate. The tail strip design facilitates the replacement and maintenance of the oil-absorbing cotton and also helps guide the lubricating oil to penetrate into the center of the oil-absorbing cotton, improving oil absorption efficiency. During operation, the oil-absorbing cotton 3-3 continuously provides lubrication to the rubber ring 3-2, significantly reducing its frictional resistance with the cylinder wall during the pumping stroke. On the return stroke, its absorbency prevents excessive lubricating oil from being carried away or dripping, maintaining long-lasting lubrication and cleanliness.

[0037] The handle 4 includes a receiving part 4-1 and two hand grips 4-2. The hand grips 4-2 have a cylindrical structure with a hollow interior. One end is connected to both sides of the receiving part 4-1, and the other end has a threaded cap 4-3. The hollow interior can be used to store spare absorbent cotton or other inflatable tools, improving the product's practicality and portability.

[0038] This embodiment integrates oil-absorbing cotton into the piston structure, effectively absorbing and slowly releasing lubricating oil, reducing oil spillage, and extending the service life of the air pump. It is especially suitable for inflation scenarios that require high cleanliness.

[0039] Example 2: Oil-absorbing cotton is placed in the annular groove of the piston structure. This embodiment provides another type of air pump for inflatable products, the structure of which is as follows: Figures 5 to 9 As shown. Compared with Embodiment 1, the piston structure 3 in this embodiment is different.

[0040] In addition to the positioning groove 3-1-1, the support plate 3-1 also has an annular groove 3-1-7 located below the positioning groove. The outer edge 3-2-1 of the rubber ring 3-2 has an integrally formed annular retaining edge, forming an inverted L-shaped cross-section. This annular retaining edge is located outside the annular groove 3-1-7.

[0041] The oil-absorbing cotton 3-3 is annular, installed in the annular groove 3-1-7, and located inside the annular retaining edge of the rubber ring 3-2. The oil-absorbing cotton 3-3 also has a tail strip 3-3-1, which passes through the through hole 3-1-3 on the support plate and extends out from the bottom.

[0042] Piston structure working principle: Its air pumping principle is basically the same as that in Example 1.

[0043] The improvements in this embodiment are as follows: The inverted L-shaped rubber ring structure not only serves a sealing function, but its annular flange also effectively surrounds and protects the oil-absorbing cotton 3-3 in the annular groove, preventing it from shifting or falling off during high-speed piston movement. The lubrication mechanism is further optimized: the oil-absorbing cotton 3-3 is positioned closer to the friction contact area between the rubber ring and the cylinder wall, resulting in a more direct and efficient supply of lubricating oil. The slight deformation of the rubber ring during reciprocating motion compresses the oil-absorbing cotton, promoting uniform lubricating oil seepage, achieving more precise and continuous lubrication, and further reducing friction, wear, and oil splashing.

[0044] This structure further optimizes the installation position of the oil-absorbing cotton, bringing it closer to the friction surface for more direct and effective lubrication.

[0045] The remaining structures, such as cylinder 1, air pump 2, and handle 4, are the same as in Embodiment 1 and will not be described again.

[0046] Example 3: Oil-absorbing cotton is placed at the bottom of the cylinder. This embodiment provides a third type of air pump for inflatable products, the structure of which is as follows: Figure 1 and Figure 10 As shown, the key point is the installation location of the oil-absorbing cotton.

[0047] In this embodiment, the oil-absorbing cotton has a circular structure and is placed directly at the bottom of the inner wall of the cylinder 1. This oil-absorbing cotton can be used to absorb excess lubricating oil and dust deposited at the bottom, keeping the inside of the cylinder clean and reducing resistance during piston movement.

[0048] Piston Structure Working Principle: The working principle of piston structure 3 is the same as in Embodiment 1 or a conventional air pump. The lubrication method in this embodiment is "bottom lubrication": Lubricating oil deposited at the bottom of the cylinder is absorbed and stored by circular oil-absorbing cotton, preventing oil accumulation. When the piston moves to near the bottom dead center, the rubber ring may come into slight contact or very close contact with the oil-absorbing cotton, thereby obtaining lubrication from the surface of the cotton. Simultaneously, the agitated airflow helps to vaporize the lubricating oil and diffuse it to the upper part of the cylinder wall, achieving bottom-up lubrication of the piston. This method is particularly suitable for treating lubricating oil deposited under gravity, effectively recovering and utilizing excess oil, preventing its deterioration and buildup, and significantly improving problems such as poor sealing and difficult air pumping caused by bottom oil buildup.

[0049] Piston structure 3 can adopt a conventional design or the structure described in Embodiment 1 or 2, but it is not mandatory to have an oil-absorbing cotton installation function. The handle 4 has the same structure as before and has a storage function to store spare round oil-absorbing cotton sheets.

[0050] This embodiment is particularly suitable for the renovation of old air pumps or for use scenarios where the problem of oil accumulation at the bottom is particularly prominent.

[0051] The above embodiments are merely illustrative examples, and the scope of protection of this utility model is defined by the claims. Those skilled in the art can combine, modify, or supplement the above embodiments without departing from the concept of this utility model, and all such modifications should be considered to fall within the scope of protection of this utility model.

Claims

1. An air pump for inflatable products, comprising a cylinder (1) and an air pump rod (2), wherein the air pump rod (2) is located inside the cylinder (1) and has a degree of freedom to move along the central axis of the cylinder (1); one end of the air pump rod (2) is provided with a piston structure (3); characterized in that, It also includes oil-absorbing cotton (3-3); the oil-absorbing cotton (3-3) is installed in at least one of the following locations: In installation position one, the oil-absorbing cotton (3-3) is placed on the piston structure (3); Installation position two, the oil-absorbing cotton (3-3) is located at the bottom of the cylinder (1).

2. The air pump for inflatable products according to claim 1, characterized in that, The piston structure (3) includes a support plate (3-1) and a rubber ring (3-2); the outer circumference of the support plate (3-1) is provided with a positioning groove (3-1-1), and the lower edge of the positioning groove (3-1-1) is provided with an opening (3-1-6); the rubber ring (3-2) is located in the positioning groove (3-1-1).

3. An air pump for inflatable products according to claim 2, characterized in that, In the case of installation position one, the oil-absorbing cotton (3-3) is annular, located in the positioning groove (3-1-1) of the piston structure (3), and located inside the rubber ring (3-2).

4. An air pump for inflatable products according to claim 2, characterized in that, The support plate (3-1) is also provided with an annular groove (3-1-7), which is located below the positioning groove (3-1-1); the outer edge of the rubber ring (3-2) is provided with an annular retaining edge integrally formed therewith, forming a structure with an inverted L-shaped cross section; the annular groove (3-1-7) is located inside the annular retaining edge. In the case of installation position one, the oil-absorbing cotton (3-3) is annular, located in the annular groove (3-1-7), and situated inside the annular retaining edge.

5. An air pump for inflatable products according to claim 3 or 4, characterized in that, The oil-absorbing cotton (3-3) is provided with a tail strip (3-3-1), the end of which passes through a through hole (3-1-3) on the support plate (3-1) and extends out from the bottom of the support plate (3-1).

6. An air pump for inflatable products according to claim 1, characterized in that, In the case of installation method two, the oil-absorbing cotton (3-3) is round and placed at the bottom of the cylinder (1).

7. An air pump for inflatable products according to claim 1, characterized in that, It also includes a handle (4); the handle (4) is installed at the other end of the air pump (2); the handle (4) includes a grip (4-2) and a receiving part (4-1); there are two grips (4-2), each grip (4-2) is a cylindrical structure with a cavity inside, one end is connected to the receiving part (4-1), and the other end is provided with a pressure cap (4-3) connected to it.

8. An air pump for inflatable products according to claim 7, characterized in that, The two grips (4-2) are located on the same straight line and are connected to the two sides of the receiving part (4-1).

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