One-way circulation type inflating pump piston

Abstract

The utility model discloses a one-way circulation type blast pump piston which is characterized in that an inner pipe cavity penetrating through the upper end face and the lower end face of a main shell is formed in the main shell, circulation holes penetrating through the upper end face and the lower end face of the main shell are formed in the outer side of the inner pipe cavity, and a plurality of circulation holes are annularly distributed in a matched mode. Therefore, the flowing area of gas entering the interior from the outside through the circulation hole is increased, the outer ring space of the piston is utilized to the maximum extent, the gas is sucked into the compression cylinder through the circulation hole to the maximum extent, the resistance of the piston in the moving process is reduced, large pressing force is not needed in the using process, more labor is saved in the using process, and the service life of the piston is prolonged. And the use efficiency is higher.

Description

Technical Field

[0001] The utility model relates to the field of air pump technology, in particular to a one-way circulating air pump piston. Background Art

[0002] Existing manual compression inflating devices are commonly known by various names such as air pumps or air pumps. Their principle is to add external components such as piston connecting rods to a tubular material. The external pressing handle causes the connection and piston to move to generate pressure, and the high-pressure gas is output to the outside to replenish the gas of the items that need to be inflated. After years of development, there are already many such devices, especially the piston component, which has a variety of specifications and types on the market.

[0003] However, a drawback among many pistons is the inability to maximize the flow rate of air inlet and outlet. For example, in patents ZL202221022905.5, ZL201910408122.7, ZL201821585323.1, and ZL 202021228991.6, the sealing valves used for high-pressure gas exchange are all assembled using multiple components. Furthermore, these are bidirectional airflow systems, which significantly hinders gas flow, increases piston movement resistance, and significantly increases manual pressure. This makes pumping tiresome and inefficient. Therefore, it is necessary to further improve the existing air pump piston structure. Utility Model Content

[0004] In view of this, the present invention aims to address the deficiencies in the prior art, and its main purpose is to provide a one-way circulating air pump piston, which can effectively solve the problems of the existing air pump piston structure, such as large piston movement resistance, greater pressing force required by users, and low usage efficiency.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A one-way circulation air pump piston comprises a main shell, a piston rubber ring, a lower shell and a sealing assembly; the main shell is provided with an inner tube cavity penetrating the upper and lower end surfaces of the main shell, and the outer side of the inner tube cavity is provided with circulation holes penetrating the upper and lower end surfaces of the main shell, and the circulation holes are arranged in a ring shape; the lower shell is arranged at the lower end of the main shell, and the lower shell is provided with an inner air chamber connected to the inner tube cavity, and the lower bottom of the inner air chamber is provided with an inner cavity connected to the inner air chamber, and the side wall of the inner cavity is provided with a circulation hole window connecting the inner cavity and the circulation hole; the piston rubber ring can be movably mounted on the outer periphery of the lower shell up and down, and corresponds to the lower end opening of the circulation hole, and is used to block the lower end opening of the circulation hole when the piston rubber ring moves upward; the sealing assembly can be movably arranged on the lower shell and located in the inner air chamber, and is used to block the lower end opening of the inner tube cavity and the upper end opening of the inner cavity respectively through the up and down movement of the sealing assembly.

[0007] As a preferred solution, the circulation holes are arranged in an annular extending manner, and a plurality of circulation holes are arranged at equal angles on the outside of the inner tube chamber.

[0008] As a preferred solution, the main shell is provided with a first mounting surface, and the lower shell is provided with a second mounting surface that matches the first mounting surface. The lower shell is bonded and fixed together with the second mounting surface by bonding.

[0009] As a preferred solution, the sealing assembly includes a sealing gasket, a sliding shaft and an elastic member; the sealing gasket can be movably arranged up and down in the inner air chamber and corresponds to the lower end opening of the inner tube chamber and the upper end opening of the inner chamber respectively; a sliding hole is provided on the lower shell body, and the sliding shaft is provided at the lower end of the sealing gasket and extends downward from the sliding hole; the elastic member is sleeved on the outside of the sliding shaft, and the upper and lower ends of the elastic member are respectively against the lower end surface of the sealing gasket and the lower end of the sliding shaft, and the elastic member is used to prompt the sealing gasket to move downward and reset and block the upper end opening of the inner chamber.

[0010] As a preferred solution, the sealing gasket has an inner hole extending through it, the upper end of the sliding shaft is provided with a first threaded opening that matches the inner hole of the gasket, and the first screw passes through the inner hole of the gasket from top to bottom and is locked with the first threaded opening.

[0011] As a preferred solution, a second threaded opening is opened at the lower end of the sliding shaft, and the second screw cooperates with the second threaded opening from bottom to top, and the lower end of the elastic member abuts against the upper end surface of the nut in the second screw.

[0012] As a preferred solution, the elastic member is a spring.

[0013] As a preferred solution, the outer peripheral side of the lower shell has a lower stop surface, and the lower end surface of the piston rubber ring cooperates with the lower stop surface.

[0014] As a preferred solution, the side wall of the upper opening of the inner chamber integrally extends upward to form a sealing port that cooperates with the piston rubber ring.

[0015] As a preferred solution, the circulation hole windows are multiple and arranged at equal angles.

[0016] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that:

[0017] The main shell has an inner tube chamber that passes through the upper and lower end surfaces of the main shell. The outer side of the inner tube chamber is provided with a circulation hole that passes through the upper and lower end surfaces of the main shell, and the circulation holes are arranged in a ring shape, thereby increasing the flow area of the gas from the outside into the inside through the circulation holes, maximizing the use of the outer ring space of the piston, and achieving the maximum suction of gas into the compression cylinder through the circulation holes, reducing the resistance during the movement of the piston, and not requiring a large pressing force during use, making the use process more labor-saving and making the use efficiency higher.

[0018] In order to more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the exploded state of a preferred embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram of an exploded state of a preferred embodiment of the present invention from another angle;

[0021] Figure 3 This is a schematic diagram of the three-dimensional structure of the sealing assembly in a preferred embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of the three-dimensional structure of the main housing in a preferred embodiment of the present utility model;

[0023] Figure 5 It is a side sectional schematic diagram of the lower shell in a preferred embodiment of the present utility model.

[0024] Description of the accompanying drawings:

[0025] 1. Main shell; 1-1. Circulation hole; 1-2. Airway sealing surface; 1-3. First mounting surface; 1-4. Inner tube chamber; 2. Piston rubber ring; 2-1. Upper ring surface; 3. Lower shell; 3-1. Sliding hole; 3-2. Sealing port; 3-3. Airway window; 3-4. Inner air chamber; 3-5. Lower stop surface; 3-6. Second mounting surface; 3-7. Inner chamber; 4. Sealing assembly; 4-1. Sealing rubber gasket; 4-2. Inner hole of rubber gasket; 4-3. Sliding shaft; 4-4. First threaded port; 4-5. Second threaded port; 4-6. Elastic member; 4-7. Second screw; 4-8. First screw. DETAILED DESCRIPTION

[0026] Please refer to Figures 1 to 5 As shown, it shows the specific structure of a preferred embodiment of the present utility model, which includes a main housing 1, a piston rubber ring 2, a lower housing 3 and a sealing assembly 4.

[0027] The main shell 1 has an inner tube chamber 1-4 that passes through the upper and lower end surfaces of the main shell 1, and the outer side of the inner tube chamber 1-4 is provided with circulation holes 1-1 that pass through the upper and lower end surfaces of the main shell 1, and the circulation holes 1-1 are arranged in a ring shape. In this embodiment, the circulation holes 1-1 are arranged in a ring shape, and the multiple circulation holes 1-1 are arranged at equal angles on the outer side of the inner tube chamber 1-4. The annularly arranged circulation holes 1-1 can further increase the area of a single circulation hole 1-1, thereby further increasing the flow rate of external gas through the circulation holes 1-1; a first mounting surface 1-3 is provided on the main shell 1.

[0028] The lower housing 3 is disposed at the lower end of the main housing 1. The lower housing 3 contains an inner air chamber 3-4 that communicates with the inner tube chamber 1-4. An inner chamber 3-7 is defined at the lower bottom of the inner air chamber 3-4, communicating with the inner air chamber 3-4. The sidewall of the inner chamber 3-7 defines an airway window 3-3 that connects the inner chamber 3-7 to the circulation hole 1-1. In this embodiment, the lower housing 3 is provided with a second mounting surface 3-6 that mates with the first mounting surface 1-3. The lower housing 3 is bonded to the second mounting surface 3-6 and the first mounting surface 1-3, which provides a better seal and prevents air leakage. The outer periphery of the lower housing 3 includes a lower stop surface 3-5. The sidewall of the upper opening of the inner chamber 3-7 integrally extends upwardly to form a sealing port 3-2 that mates with the piston rubber ring 2. Multiple airway windows 3-3 are arranged at equal angles to increase the velocity of gas entering the inner chamber 3-7 from the circulation hole 1-1. The lower shell 3 is provided with a sliding hole 3 - 1 .

[0029] The piston rubber ring 2 can be movably mounted on the outer periphery of the lower shell 3 and corresponds to the lower end opening of the circulation hole 1-1. When the piston rubber ring 2 moves upward, it is used to block the lower end opening of the circulation hole 1-1; in this embodiment, the lower end surface of the piston rubber ring 2 cooperates with the lower stop surface 3-5, and when external gas enters the interior, the piston rubber ring 2 falls on the lower stop surface 3-5.

[0030] The sealing assembly 4 is movably arranged on the lower shell 3 and located in the inner air chamber 3-4. The sealing assembly 4 is used to block the lower end opening of the inner tube chamber 1-4 and the upper end opening of the inner chamber 3-7 by the upward and downward movement of the sealing assembly 4. In this embodiment, the sealing assembly 4 includes a sealing pad 4-1, a sliding shaft 4-3 and an elastic member 4-6. The sealing pad 4-1 is movably arranged in the inner air chamber 3-4 and corresponds to the lower end opening of the inner tube chamber 1-4 and the upper end opening of the inner chamber 3-7 respectively. The sliding shaft 4-3 is arranged at the lower end of the sealing pad 4-1 and extends downward from the sliding hole 3-1. The elastic member 4-6 is sleeved on the outer side of the sliding shaft 4-3, and the upper and lower ends of the elastic member 4-6 respectively abut against the lower end surface of the sealing pad 4-1 and the lower end of the sliding shaft 4-3. The elastic member 4-6 is used to cause the sealing pad 4-1 to move downward and reset and block the upper end opening of the inner chamber 3-7. The sealing gasket 4-1 has a gasket inner hole 4-2 extending through it. The upper end of the sliding shaft 4-3 defines a first threaded opening 4-4 that engages with the gasket inner hole 4-2. A first screw 4-8 extends downward through the gasket inner hole 4-2 and locks with the first threaded opening 4-4. The lower end of the sliding shaft 4-3 defines a second threaded opening 4-5, which engages with the second screw 4-7 from bottom to top. The lower end of the elastic member 4-6 abuts against the upper end surface of the nut in the second screw 4-7. The elastic member 4-6 is a spring.

[0031] The assembly process of this embodiment is described in detail as follows:

[0032] During assembly, first insert the second screw 4-8 into the inner hole 4-2 of the rubber pad, then screw in the first threaded opening 4-4 at one end of the sliding shaft 4-3 and the first screw 4-8 and tighten them. After tightening, insert the sliding shaft 4-3 into the sliding hole 3-1 of the lower shell, then put the elastic part 4-6 on the sliding shaft 4-3, and further insert the second screw 4-7 into the second threaded opening 4-5 and tighten it. At this time, the installation of the sealing assembly 4 is completed. Next, place the piston rubber ring 2 in the position of the lower stop surface 3-5 of the lower shell 3, and then apply adhesive on the second mounting surface 3-6 of the lower shell 3 and insert it into the first mounting surface 1-3 of the piston main shell 1 and press it tightly. At this time, the installation of the entire piston is completed.

[0033] The working principle of this embodiment is described in detail as follows:

[0034] When the external force causes the entire piston to move upward, the one-way valve assembly is in a closed state due to the action of the spring, that is, the sealing rubber gasket 4-1 of the one-way valve is fitted on the sealing port 3-2. Due to the upward action of the piston, the piston rubber ring 2 moves downward, causing the upper ring surface 2-1 of the piston rubber ring 2 to leave the airway sealing port surface 1-2 at the lower end opening of the annular flow hole 1-1, allowing external gas to pass through the annular annular flow hole 1-1 and then through the airway window 3-3 into the inner chamber 3-7 of the lower shell 3. When the external force causes the piston to move downward, the inner chamber 3-7 is closed. The gas pressure increases, and two forces are generated at the same time. The piston rubber ring 2 moves upward so that the upper ring surface 2-1 of the piston rubber ring 2 fits the airway sealing surface 1-2 of the piston main shell 1, completing the cutoff of the external airflow. The other force causes the sealing component 4 to open due to the increased pressure in the inner chamber 3-7. At this time, the high-pressure gas in the inner chamber 3-7 enters the inner tube chamber 1-4 of the main shell 1, and the high-pressure gas is then output to the outside through the inner tube chamber 1-4. Further reciprocating up and down like this, the piston completes the output of the high-pressure gas.

[0035] The design focus of the present invention is that: an inner tube chamber is provided in the main shell body which passes through the upper and lower end surfaces of the main shell body, and a circulation hole is provided on the outside of the inner tube chamber which passes through the upper and lower end surfaces of the main shell body, and the circulation holes are arranged in a ring shape, thereby increasing the flow area of the gas from the outside into the inside through the circulation holes, making maximum use of the outer ring space of the piston, and achieving the maximum suction of the gas into the compression cylinder through the circulation holes, reducing the resistance during the movement of the piston, and not requiring a large pressing force during use, making the use process more labor-saving and making the use efficiency higher.

[0036] The above description is merely a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A one-way circulation type air pump piston, characterized in that: The cam is provided with an airtight seal which extends from the bottom of the main body to the bottom of the main body, and the cam is provided with an airtight seal which extends from the bottom of the main body to the bottom of the main body.

2. The one-way circulation type air pump piston according to claim 1, characterized in that: The circulation holes are arranged in an annular extending manner, and a plurality of circulation holes are arranged at equal angles on the outside of the inner tube cavity.

3. The one-way circulation type air pump piston according to claim 1, characterized in that: The main shell is provided with a first mounting surface, and the lower shell is provided with a second mounting surface that matches the first mounting surface. The lower shell is bonded and fixed together with the second mounting surface by bonding.

4. The one-way circulation type air pump piston according to claim 1, characterized in that: The sealing assembly includes a sealing gasket, a sliding shaft and an elastic member; the sealing gasket can be movably arranged up and down in the inner air chamber and corresponds to the lower end opening of the inner tube cavity and the upper end opening of the inner cavity respectively; a sliding hole is provided on the lower shell body, and the sliding shaft is provided at the lower end of the sealing gasket and extends downward from the sliding hole; the elastic member is sleeved on the outside of the sliding shaft, and the upper and lower ends of the elastic member respectively abut against the lower end surface of the sealing gasket and the lower end of the sliding shaft, and the elastic member is used to prompt the sealing gasket to move downward and reset and block the upper end opening of the inner cavity.

5. The one-way circulation type air pump piston according to claim 4, characterized in that: The sealing rubber gasket has an inner hole extending through it, the upper end of the sliding shaft is provided with a first threaded opening that matches the inner hole of the rubber gasket, and the first screw passes through the inner hole of the rubber gasket from top to bottom and is locked with the first threaded opening.

6. The one-way circulation type air pump piston according to claim 4, characterized in that: The lower end of the sliding shaft is provided with a second threaded opening, and the second screw is engaged with the second threaded opening from bottom to top, and the lower end of the elastic member abuts against the upper end surface of the nut in the second screw.

7. The one-way circulation type air pump piston according to claim 4, characterized in that: The elastic member is a spring.

8. The one-way circulation type air pump piston according to claim 1, characterized in that: The outer peripheral side of the lower shell is provided with a lower stop surface, and the lower end surface of the piston rubber ring is matched with the lower stop surface.

9. The one-way circulation type air pump piston according to claim 1, characterized in that: The side wall of the upper end opening of the inner chamber integrally extends upward to form a sealing port that cooperates with the piston rubber ring.

10. The one-way circulation type air pump piston according to claim 1, characterized in that: The circulation hole windows are multiple and arranged at equal angles.

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