Air pump double piston

Abstract

This utility model provides a bidirectional piston for an air pump, including a piston body. An air pump body is provided on the outside of the piston body, dividing the air pump body into an upper air chamber and a lower air chamber. An inner cylinder is provided at the center of the piston body, and an outer cylinder is sleeved on the outside of the inner cylinder. The inner cylinder is connected to the inner tube of the air pump, and the outer cylinder is connected to the outer tube of the air pump. Multiple sets of reinforcing members are arranged around the outer wall of the outer cylinder. The piston outer wall is provided on the outside of the reinforcing members. A groove is provided on the lower part of the piston outer wall and the reinforcing members. A sealing rubber ring is provided inside the groove. The lower end of the inner cylinder is connected to a first air guide channel. The outlet end of the first air guide channel is connected to the groove. An upper valve port and a lower valve port are symmetrically opened at the upper and lower centers of the piston body. The outer cylinder and the inner cylinder form a third air guide channel. The lower end of the third air guide channel is connected to a second air guide channel. The second air guide channel is located inside the piston body and is used to connect to the upper valve port and the lower valve port respectively.

Description

Technical Field

[0001] This utility model belongs to the technical field of air pump structure, and more specifically, it relates to a bidirectional piston for air pumps. Background Technology

[0002] An air pump, also known as an air compressor, is used to inflate or replenish the air needed for various tires and some ball sports. Air pumps are mainly divided into manual, foot-operated, and electric types. With rapid economic development and a gradual improvement in living standards, people's spiritual needs have also greatly increased, leading to higher demands for the portability of air pumps. A two-way pump is an essential tool for water sports enthusiasts. It can quickly inflate paddleboards or kayaks and deflate them rapidly when needed, greatly saving preparation time. More importantly, the two-way operation design makes the inflation and deflation process more efficient, avoiding the cumbersome steps of traditional one-way pumps.

[0003] However, in actual use, most existing air pumps use a single piston for pressurization and air output. After prolonged use, the sealing and pressurization performance of a single piston will be greatly reduced, and the piston does not have a certain buffering capacity, which increases the phenomenon of piston bottoming out and squeezing, greatly reducing the service life of the piston. Therefore, in view of this, we have studied and improved the existing structure and its shortcomings to provide a two-way piston for air pumps, in order to achieve a more practical purpose. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a two-way piston for an air pump, thereby addressing the issues raised in the background art.

[0005] The purpose and function of this utility model's bidirectional piston for air pumps are achieved through the following specific technical means:

[0006] A bidirectional piston for an air pump includes a piston body with an air pump body on its outer side, dividing the air pump body into an upper air chamber and a lower air chamber. An inner cylinder is located at the center of the piston body, and an outer cylinder is fitted around the outer side of the inner cylinder. The inner cylinder is connected to the inner tube of the air pump, and the outer cylinder is connected to the outer tube of the air pump. Multiple sets of reinforcing members are arranged around the outer wall of the outer cylinder, and a piston outer wall is located outside the reinforcing members. A groove is provided between the piston outer wall and the lower part of the reinforcing members, and a sealing rubber ring is located inside the groove. A first air guide channel is connected to the lower end of the inner cylinder, and the outlet end of the first air guide channel is connected to the groove. An upper valve port and a lower valve port are symmetrically opened at the upper and lower centers of the piston body. The outer cylinder and the inner cylinder form a third air guide channel, and a second air guide channel is connected to the lower end of the third air guide channel. The second air guide channel is located inside the piston body and is used to connect to both the upper and lower valve ports.

[0007] Furthermore, when the sealing rubber ring contacts the upper surface of the groove, a lower air guide gap is formed between the sealing rubber ring and the lower surface of the groove, and when the sealing rubber ring contacts the lower surface of the groove, an upper air guide gap is formed between the sealing rubber ring and the upper surface of the groove.

[0008] Furthermore, the No. 3 air guide channel is connected to the No. 2 air guide channel, as well as the upper valve port and the lower valve port, and the inner cylinder is connected to the No. 1 air guide channel and the groove.

[0009] Furthermore, the inner cylinder and the outer cylinder are two separate air chambers, and the No. 3 air guide channel and the No. 2 air guide channel are different from the inner cylinder and the No. 1 air guide channel.

[0010] The beneficial effect of adopting the above-mentioned further scheme is that, since the No. 3 and No. 2 air guide channels are different from the inner cylinder and No. 1 air guide channel, the intake and exhaust of the piston body can be clearly distinguished, making its intake and exhaust more stable and reliable, and able to withstand the pressure when it is sucking in air upwards and pumping air downwards.

[0011] Furthermore, the lower valve port and the upper valve port are provided with circular support blocks inside, the circular support blocks are provided with circular through holes, the lower valve port is provided with a lower valve cover, and the upper valve port is provided with an upper valve cover.

[0012] Furthermore, both the upper and lower valve covers are provided with stems that fit into circular through holes, and the bottom of the stems is provided with an inverted buckle. Both the upper and lower valve covers are elastic valve covers.

[0013] The beneficial effect of adopting the above-mentioned further solution is that the setting of the circular support block can make the upper and lower valve covers more stable and reliable, and the inverted buckle at the bottom of the stem can prevent the valve cover from falling out of the valve opening.

[0014] Furthermore, the piston body has a buffer seat at its lower end, and the outer wall of the buffer seat is folded.

[0015] The beneficial effect of adopting the above-mentioned further solution is that, by setting up the buffer rubber seat, the piston can effectively reduce the bottoming pressure when it descends.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This type of air pump features a bidirectional piston with three and two air guide channels that are different from the inner cylinder and one air guide channel. This allows for clear air intake and exhaust of the piston body, making the air intake and exhaust more stable and reliable. It can withstand the pressure when inhaling upwards and pumping downwards. The circular support block ensures a more secure and reliable installation of the upper and lower valve covers. The inverted buckle at the bottom of the stem prevents the valve cover from falling out of the valve opening. The buffer rubber seat effectively reduces the bottoming pressure of the piston when it descends. This invention has a simple and reasonable structure, a novel design, and is easy and convenient to assemble, making it highly practical. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention.

[0019] Figure 2 This is a left sectional view of the present invention.

[0020] Figure 3 This is a rear sectional view of the present invention.

[0021] Figure 4 This is a cross-sectional view of the present invention.

[0022] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0023] 100. Piston body; 101. Piston outer wall; 102. Reinforcing member; 103. Outer cylinder; 104. Inner cylinder; 105. No. 1 air guide channel; 106. Sealing rubber ring; 107. Upper air guide gap; 108. Lower air guide gap; 109. Upper valve port; 110. Upper valve cover; 111. Lower valve port; 112. Lower valve cover; 113. No. 2 air guide channel; 114. No. 3 air guide channel; 115. Groove; 116. Air pump body; 117. Upper air chamber; 118. Lower air chamber; 119. Buffer rubber seat. Detailed Implementation

[0024] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0025] Example:

[0026] As attached Figure 1 To be continued Figure 4 As shown:

[0027] This utility model provides a bidirectional piston for an air pump, including a piston body 100, an air pump body 116 on the outer side of the piston body 100, the piston body 100 dividing the air pump body 116 into an upper air chamber 117 and a lower air chamber 118, an inner cylinder 104 at the center of the piston body 100, an outer cylinder 103 sleeved on the outer side of the inner cylinder 104, the inner cylinder 104 connected to the inner tube of the air pump, the outer cylinder 103 connected to the outer tube of the air pump, a plurality of reinforcing members 102 surrounding the outer wall of the outer cylinder 103, a piston outer wall 101 on the outer side of the reinforcing members 102, and the piston outer wall 101 and the reinforcing members 102 at the lower... The piston body 100 has a groove 115, and a sealing rubber ring 106 is provided inside the groove 115. The lower end of the inner cylinder 104 is connected to a first air guide channel 105, and the outlet end of the first air guide channel 105 is connected to the groove 115. The piston body 100 has an upper valve port 109 and a lower valve port 111 symmetrically opened at the upper and lower centers. The outer cylinder 103 and the inner cylinder 104 form a third air guide channel 114. The lower end of the third air guide channel 114 is connected to a second air guide channel 113. The second air guide channel 113 is located inside the piston body 100 and is used to connect the upper valve port 109 and the lower valve port 111 respectively.

[0028] When the sealing rubber ring 106 contacts the upper surface of the groove 115, a lower air guide gap 108 is formed between the sealing rubber ring 106 and the lower surface of the groove 115. When the sealing rubber ring 106 contacts the lower surface of the groove 115, an upper air guide gap 107 is formed between the sealing rubber ring 106 and the upper surface of the groove 115. The third air guide channel 114 is connected to the second air guide channel 113, as well as the upper valve port 109 and the lower valve port 111. The inner cylinder 104 is connected to the first air guide channel 105 and the groove 115. The inner cylinder 104 and the outer cylinder 103 are two separate air chamber spaces. The third air guide channel 114 and the second air guide channel 113 are different from the inner cylinder 104 and the first air guide channel 105. Both the lower valve port 111 and the upper valve port 109 have circular support blocks inside, each with a circular through hole. The lower valve port 111 has a lower valve cover 112, and the upper valve port 109 has an upper valve cover 110. Both the upper valve cover 110 and the lower valve cover 112 have stems that mate with the circular through holes, with an inverted buckle at the bottom. Both the upper valve cover 110 and the lower valve cover 112 are resilient valve covers. The piston body 100 has a buffer seat 119 at its lower end, and the outer wall of the buffer seat 119 is folded.

[0029] The specific usage and function of this embodiment are as follows:

[0030] When using this type of bidirectional piston in an air pump, firstly, when the entire piston body 100 is placed inside an air pump body 116, the air pump body 116 is divided into two spaces, an upper air chamber 117 and a lower air chamber 118, by means of a sealing rubber ring 106. When the piston body 100 is pressed down, the sealing rubber ring 106 contacts the upper surface of the groove 115, and a lower air guide gap 108 is formed between the sealing rubber ring 106 and the lower surface of the groove 115. The air in the lower air chamber 118 is then discharged through the lower air guide gap 108, the first air guide channel 105, and the inner cylinder 104 into the inner tube of the air pump for pumping. At the same time, outside air flows into the upper air chamber 117 for air storage through the outer tube of the air pump, the third air guide channel 114 and the second air guide channel 113, and the upper valve port 109. When the piston body 100 is pulled upward, the sealing rubber ring 106 contacts the lower surface of the groove 115, and an upper air guide gap 107 is formed between the sealing rubber ring 106 and the upper surface of the groove 115. The air in the upper air chamber 117 is discharged through the upper air guide gap 107, the first air guide channel 105 and the inner cylinder 104 and enters the inner tube of the air pump for air pumping. At the same time, the outside air flows into the lower air chamber 118 for air storage through the outer tube of the air pump, the third air guide channel 114 and the second air guide channel 113 and the lower valve port 111. The first two steps are repeated until the air pumping is finished.

[0031] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A two-way piston for an air pump, characterized in that... The piston body (100) includes an air pump body (116) on its outer side. The air pump body (116) is divided into an upper air chamber (117) and a lower air chamber (118) by the piston body (100). An inner cylinder (104) is provided at the center of the piston body (100). An outer cylinder (103) is sleeved on the outer side of the inner cylinder (104). The inner cylinder (104) is connected to the inner tube of the air pump, and the outer cylinder (103) is connected to the outer tube of the air pump. Multiple sets of reinforcing members (102) are arranged around the outer wall of the outer cylinder (103). A piston outer wall (101) is provided on the outer side of the reinforcing members (102). The piston outer wall (101) and the lower part of the reinforcing members (102) are provided with a recess. The groove (115) is provided with a sealing rubber ring (106) inside. The lower end of the inner cylinder (104) is connected to the first air guide channel (105). The outlet end of the first air guide channel (105) is connected to the groove (115). The piston body (100) is symmetrically provided with an upper valve port (109) and a lower valve port (111) at the upper and lower centers. The outer cylinder (103) and the inner cylinder (104) form a third air guide channel (114). The lower end of the third air guide channel (114) is connected to a second air guide channel (113). The second air guide channel (113) is located inside the piston body (100) and is used to connect the upper valve port (109) and the lower valve port (111).

2. The bidirectional piston of the air pump as described in claim 1, characterized in that, When the sealing rubber ring (106) contacts the upper surface of the groove (115), a lower air guide gap (108) is formed between the sealing rubber ring (106) and the lower surface of the groove (115), and when the sealing rubber ring (106) contacts the lower surface of the groove (115), an upper air guide gap (107) is formed between the sealing rubber ring (106) and the upper surface of the groove (115).

3. The bidirectional piston of the air pump as described in claim 1, characterized in that, The No. 3 air guide channel (114) is connected to the No. 2 air guide channel (113), as well as the upper valve port (109) and the lower valve port (111). The inner cylinder (104) is connected to the No. 1 air guide channel (105) and the groove (115).

4. The bidirectional piston of the air pump as described in claim 1, characterized in that, The inner cylinder (104) and the outer cylinder (103) are two separate air chambers. The third air guide channel (114) and the second air guide channel (113) are different from the inner cylinder (104) and the first air guide channel (105).

5. The bidirectional piston of the air pump as described in claim 1, characterized in that, The lower valve port (111) and the upper valve port (109) are provided with circular support blocks inside. The circular support blocks are provided with circular through holes. The lower valve port (111) is provided with a lower valve cover (112), and the upper valve port (109) is provided with an upper valve cover (110).

6. The bidirectional piston of the air pump as described in claim 5, characterized in that, Both the upper valve cover (110) and the lower valve cover (112) are provided with stems that fit circular through holes. The bottom of the stems is provided with an inverted buckle. Both the upper valve cover (110) and the lower valve cover (112) are elastic valve covers.

7. The bidirectional piston of the air pump as described in claim 1, characterized in that, The piston body (100) is provided with a buffer rubber seat (119) at the lower end, and the outer wall of the buffer rubber seat (119) is folded.

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