Two-stage large-air-flow inflator

Abstract

The invention provides a two-stage type large-air-volume inflator. The two-stage type large-air-volume inflator comprises The center of the body is provided with an air chamber, the body is provided with a valve chamber on one side of the air chamber, and the valve chamber is communicated with the air chamber; the switching valve body is arranged in the valve chamber of the body, and the two ends of the switching valve body are provided with a ventilation hole and a ventilation flow channel; an air inlet valve and an air outlet valve are arranged on the periphery of the switching valve body, the air inlet valve and the air outlet valve can have different air circulation directions relative to the ventilation hole and the ventilation flow channel, the switching valve body is arranged in the valve chamber in a pivoted mode, and the switching valve body can be switched to be communicated with the air chamber through the air inlet valve or the air outlet valve; by means of the switching valve body, the body can have two different functions of air inflation and air exhaust.

Description

Technical Field

[0001] The present invention relates to an air pump, and in particular, to a two-stage large-volume air pump which can be used for both inflating and deflating air. Background Art

[0002] In order to increase the air intake during pumping, conventional air pumps are connected to air pipes on both sides of the cylinder. At the same time, a piston rod is provided in the cylinder. When the piston moves back and forth in the cylinder, no matter which direction it moves, it can compress the gas. This allows the air pump to produce a larger air discharge effect, and is used to quickly inflate larger objects.

[0003] However, most commonly used air pumps have only a single function, that is, the air intake function. Through the compression of the piston, the gas on both sides of the cylinder can be compressed and then sent into the air guide tube for inflation. The function is relatively simple. Summary of the invention

[0004] The object of the present invention is to provide a two-stage large-volume air pump which can be used in two different modes: inflating and deflating.

[0005] The present invention provides a two-stage large volume air pump, comprising:

[0006] A body having an air chamber in the center thereof, a valve chamber disposed on one side of the air chamber, the valve chamber being connected to the air chamber, and one end of the valve chamber being an open end; a mounting hole disposed at a position away from the valve chamber; a one-way valve disposed at a position of the body close to the mounting hole, the one-way valve allowing gas to flow out of the air chamber;

[0007] A switching valve body is arranged in the valve chamber of the main body, and a vent hole and a ventilation flow channel are arranged at both ends of the switching valve body; an inlet valve and an outlet valve are arranged around the switching valve body, and the inlet valve and the outlet valve can have different gas flow directions between the vent hole and the ventilation flow channel. The switching valve body is pivotally arranged in the valve chamber, and the switching valve body can switch to communicate with the air chamber through the inlet valve or the outlet valve;

[0008] A piston having a rod body and a plug portion, the piston is disposed in the air chamber and reciprocates, the plug portion seals the air chamber and separates the switching valve body and the one-way valve;

[0009] A connecting pipe is arranged between the switching valve body and the one-way valve to connect the one-way valve with the ventilation channel.

[0010] By switching the positions of the inlet valve and the outlet valve through the switching valve body, the piston can produce the effect of pumping or exhausting air when it reciprocates, so that the air pump can have two different action modes, and when the piston moves, both sides can produce the function of transmitting gas, so that its efficiency can be increased.

[0011] Preferably, the switching valve body is cylindrical with a partition plate arranged in the center thereof, the air inlet valve includes a first air inlet portion and a second air inlet portion, the first air inlet portion and the second air inlet portion are arranged on both sides of the partition plate; the air outlet valve includes a first air outlet portion and a second air outlet portion, the first air outlet portion and the second air outlet portion are arranged on both sides of the partition plate; the switching valve body is pivotally mounted in the valve chamber, and can be rotated to switch the air inlet valve or the air outlet valve to be connected with the air chamber.

[0012] Preferably, a positioning groove is arranged on the outer side of the switching valve body, and a positioning column is arranged on the main body to limit the positioning groove, so that the rotation position of the switching valve body is limited.

[0013] Preferably, the main body is provided with two spacing holes at the junction of the air chamber and the valve chamber, and the two spacing holes can be communicated with the air inlet valve or the air outlet valve.

[0014] Preferably, the main body is provided with an air leakage hole on the side of the cylinder near the mounting hole; a air leakage switch is covered on the air leakage hole and has a track and a valve plug, and the valve plug can move along the track to open or close the air leakage hole.

[0015] Preferably, it further comprises a pressure gauge, the deflation switch is arranged on one side of the pressure gauge, a mounting hole is arranged on the pressure gauge, the main body is provided with a stopper, so that the mounting hole can be installed on the main body and positioned by the stopper; the pressure gauge is connected to the connecting pipe.

[0016] Preferably, it further comprises an inner sleeve and a cover body, the one-way valve and at least one air inlet portion are arranged on the inner sleeve; the inner sleeve is inserted from the side of the mounting hole, and an inner channel is penetrated through the center of the inner sleeve, and the rod body of the piston passes through the inner channel; the cover body covers the outer side of the mounting hole so that the inner sleeve can be fixed in position; and a through hole is arranged on the cover body for the rod body of the piston to pass through.

[0017] Thereby, the switching between inflation and deflating can be quickly and easily formed by changing the position of the switching valve body, which can improve the ease of operation, and the piston can pressurize the air to the air chambers on both sides, which can increase the efficiency of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to further understand the purpose, features and effects of the present invention, two preferred embodiments of the present invention are given below and described in detail with accompanying drawings:

[0019] Figure 1 This is a three-dimensional appearance diagram of an air pump according to a preferred embodiment of the present invention.

[0020] Figure 2 This is a three-dimensional exploded view of the air pump according to a preferred embodiment of the present invention.

[0021] Figure 3 It is a transverse cross-sectional view of an air pump according to a preferred embodiment of the present invention.

[0022] Figure 4 It is a longitudinal cross-sectional view of an air pump according to a preferred embodiment of the present invention.

[0023] Figure 5 This is a schematic diagram of the piston pulling action of the air pump in the inflating state according to a preferred embodiment of the present invention.

[0024] Figure 6 This is a schematic diagram of the downward pressing action of the piston of the air pump in the inflating state according to a preferred embodiment of the present invention.

[0025] Figure 7 This is a schematic diagram of the piston pulling action of the air pump in the preferred embodiment of the present invention in the exhaust state.

[0026] Figure 8 This is a schematic diagram of the downward pressing action of the piston of the air pump in the air pumping state according to the preferred embodiment of the present invention.

[0027] Fig. 9 This is a three-dimensional appearance diagram of an air pump according to a second preferred embodiment of the present invention.

[0028] Fig.10 This is a three-dimensional exploded view of the air pump according to the second preferred embodiment of the present invention.

[0029] Fig.11 This is a schematic diagram of the piston pulling action of the air pump in the second preferred embodiment of the present invention in the inflating state.

[0030] Fig.12 This is a schematic diagram of the piston pressing down action of the air pump in the second preferred embodiment of the present invention when inflating.

[0031] Fig.13 This is a schematic diagram of the piston pulling action of the air pump in the second preferred embodiment of the present invention in the exhaust state.

[0032] Fig.14 This is a schematic diagram of the piston pressing down action of the air pump in the second preferred embodiment of the present invention in the air pumping state. DETAILED DESCRIPTION

[0033] See also Figures 1 to 4As shown, the present invention provides a preferred embodiment of a two-stage large volume air pump, the air pump comprising:

[0034] A body 10 has an air chamber 11 in the center. The body 10 is provided with a valve chamber 12 on one side of the air chamber 11. The valve chamber 12 is connected to the air chamber 11 by two spacing holes 13. The two spacing holes 13 are arranged along the axial direction of the valve chamber 12 and are defined as a front spacing hole 131 and a rear spacing hole 132. One end of the valve chamber 12 is an open end, and the other end is covered with an air guide cover 14. The air guide cover 14 is provided with an air pipe 141 and a connecting pipe 14 2; the air chamber 11 is provided with a mounting hole 111 at the top position away from the valve chamber 12, and the body 10 is provided with a vent hole 15 and a communication hole 16 on the side of the mounting hole 111, and the communication hole 16 is connected to the communication pipe 142; in addition, the body 10 is provided with a stopper 17 near the outer circumference of the mounting hole 111; the body 10 is provided with a positioning column 18 at the bottom of the valve chamber 12, and the positioning column 18 protrudes into the valve chamber 12;

[0035] An inner sleeve 20 is barrel-shaped. The inner sleeve 20 is inserted into the air chamber 11 from the side of the mounting hole 111. A one-way valve 21 is provided on the side, which overlaps with the connecting hole 16 of the body. The one-way valve 21 allows gas to flow out of the air chamber 11 and toward the connecting hole 16. The top of the inner sleeve 20 is provided with an air inlet 22, which is composed of two air inlet one-way valves 221, so that gas can enter the air chamber 11 from the outside. An inner channel 23 is penetrated in the center of the inner sleeve 20. In addition, an inner leak hole 24 is provided on the inner sleeve 20 relative to the leak hole 15, so that the leak hole and the inner leak hole 24 overlap. The inner sleeve 20 is fixed to the body 10 by a cover 25, and a through hole 251 is penetrated on the cover 25 relative to the inner channel 23.

[0036] A switching valve body 30 is cylindrical and is placed in the valve chamber 12 of the main body 10 from the open end of the valve chamber 12. A vent hole 31 and a ventilation flow channel 32 are provided at both ends of the switching valve body 30. The ventilation flow channel 32 is located on the side of the air guide cover 14 and is connected to the connecting pipe 142 and the air pipe 141; a partition plate 33 is provided between the vent hole 31 and the ventilation flow channel 32 to form a gap between the vent hole 31 and the ventilation flow channel 32; an inlet valve 34 and an outlet valve 35 are provided on the outer circumference of the switching valve body 30. The inlet valve 34 and the outlet valve 35 are provided. 35 can form different gas flow directions between the vent hole 31 and the ventilation channel 32. The switching valve body 30 can switch to overlap the spacing hole 13 with the inlet valve 34 or the outlet valve 35 through the rotation action, and communicate with the air chamber 11; the switching valve body 30 is pivotally provided with a rotary handle 36 on the side of the vent hole 31, and the rotary handle 36 can rotate the switching valve body 30 to operate; in addition, a positioning groove 37 is provided on the outer circumferential side of the switching valve body 30, and the positioning column 18 is embedded in the positioning groove 37, so that the switching valve body 30 can rotate within a fixed range;

[0037] The air inlet valve 34 is provided with a first air inlet portion 341 and a second air inlet portion 342 on both sides of the partition plate 33; the air outlet valve 35 is also provided with a first air outlet portion 351 and a second air outlet portion 352 on both sides of the partition plate 33; when the switching valve body 30 rotates until the air inlet valve 34 and the partition hole 13 overlap, the first air inlet portion 341 will align with the front partition hole 131, and the second air inlet portion 342 will also align with the rear partition hole 132; the first air inlet portion 341 allows the gas to enter the front partition hole 131 only from the vent hole 31 and then be transmitted to the air chamber 11, and the The second air inlet portion 342 allows the gas to enter the ventilation channel 32 only from the air chamber 11 through the rear spacing hole 132; when the switching valve body 30 rotates until the air outlet valve 35 overlaps with the spacing hole 13, the first air outlet portion 351 will be opposite to the front spacing hole 131, and the second air outlet portion 352 will be opposite to the rear spacing hole 132; the first air outlet portion 351 allows the gas to enter the front spacing hole 131 only from the air chamber 11 and then be transmitted to the ventilation hole 31 to flow out, and the second air outlet portion 352 allows the gas to flow into the air chamber 11 only from the ventilation channel 32 through the rear spacing hole 132.

[0038] A piston 40, having a rod 41 and a plug 42, the plug 42 is disposed in the air chamber 11 to reciprocate, the plug 42 seals the air chamber 11 and separates the switching valve body 30 and the one-way valve 21, and the rod 41 passes through the inner channel 23 and the through hole 251, and a handle 411 is connected to the outside;

[0039] A pressure gauge 50 is connected to the connecting pipe 142 so that the pressure gauge 50 can receive and display the gas pressure values ​​from the ventilation channel 32 and the one-way valve 21 side. The structure of the pressure gauge 50 is not limited, and any structure that can display the gas pressure can be used. A mounting hole 51 is provided on the side of the pressure gauge 50. The mounting hole 51 is provided on the outside of the main body 10 and is limited by the blocking portion 17 and the cover body 25 so that the position of the pressure gauge 50 can be fixed. A deflation switch 52 is provided on one side of the mounting hole 51. The deflation switch 52 is located on the outside of the deflation hole 15 and has a track 521 and a valve plug 522; the valve plug 522 can slide on the track 521 to open or close the deflation hole 15.

[0040] When using this pump, please refer to Figures 5 to 8 As shown in the figure, the action of the air pump can be divided into two different modes: inflating and deflating;

[0041] See also Figures 5 to 6 As shown, when the air is to be inflated, the switching valve body 30 is first rotated so that the air inlet valve 34 can be aligned with the spacing hole 13, so that the air outlet valve 35 cannot conduct gas, and the valve plug 522 is covered on the air leakage hole 15; then, the piston 40 can be pulled to reciprocate in the air chamber 11. When the piston 40 is pulled toward the inner sleeve 20, the plug portion 42 will squeeze the gas above the air chamber 11 and push the gas toward the one-way valve 21, and flow to the connecting pipe 142 and then flow to the air pipe 141 and the pressure gauge 50; at the same time, the gas will also flow from the vent hole 31 through the first air inlet portion 341 through the front spacing hole 131 and fill the air chamber 11 below the plug portion 42 for inflation; when the piston 40 is pulled toward the inner sleeve 20, the plug portion 42 will squeeze the gas above the air chamber 11 and push the gas toward the one-way valve 21 and then flow to the connecting pipe 142 and then flow to the air pipe 141 and the pressure gauge 50; at the same time, the gas will also flow from the vent hole 31 through the first air inlet portion 341 through the front spacing hole 131 and fill the air chamber 11 below the plug portion 42 for inflation; When the switching valve body 30 moves, the air intake check valve 221 of the air intake portion 22 will suck the outside air into the air chamber 11 above the plug portion 42. At the same time, the plug portion 422 will also squeeze the gas in the lower air chamber 11 to move toward the second air intake portion 342 through the rear spacing hole 132, so that the gas flows to the ventilation flow channel 32 and then moves toward the air pipe 141 and the connecting pipe 142 of the air guide cover 14, so that the gas in the air pipe 141 can be pumped, and the gas flowing to the connecting pipe 142 can also drive the pressure gauge 50 to display the gas pressure value; then the piston 40 is moved toward the inner sleeve 20, and the above-mentioned cycle action is repeated, so that the piston 40 can produce the effect of compressed air pumping regardless of the movement direction;

[0042] Also, see Figure 7 and 8When the air is to be pumped out, the switching valve body 30 is first rotated to align the outlet valve 35 with the spacing hole 13 so that the inlet valve 34 does not move, and the valve plug 522 of the air leakage switch 52 is moved so that the air leakage hole 15 can be connected to the outside world; then, the piston 40 can be pulled to reciprocate in the air chamber 11. When the piston 40 is pulled toward the inner sleeve 20, the plug 42 will squeeze the gas above the air chamber 11 and push the gas toward the air leakage hole 15 to flow to the outside world; at the same time, the gas will be sucked out from the air pipe 141 to the ventilation flow channel 32 flows through the second air outlet portion 352 through the rear spacing hole 132 and then fills the air chamber 11 below the plug portion 42; when the piston 40 moves toward the switching valve body 30, the plug portion 422 also squeezes the gas in the lower air chamber 11 to move through the front spacing hole 131 toward the first air outlet portion 351, so that the gas flows to the vent hole 31 and then moves to the outside, so that the gas in the air pipe 141 can be discharged; then the piston 40 is moved toward the inner sleeve 20, and the above-mentioned cycle action is repeated, so that the piston 40 can produce the effect of discharging the air in the air pipe 141.

[0043] See also Figures 9 to 14 As shown, it is a second preferred embodiment provided by the present invention, and its main structure is the same as the previous embodiment, and the same symbols are used to represent the same parts, and no further description is given, wherein;

[0044] The main body 10 is not provided with the air leakage hole 15, and the pressure gauge 50 is not provided with the air leakage switch; Fig.11 and 12When the piston 40 is to inflate, the switching valve body 30 is first rotated so that the inlet valve 34 can be aligned with the spacing hole 13, so that the outlet valve 35 cannot conduct gas; then, the piston 40 can be pulled to reciprocate in the air chamber 11. When the piston 40 is pulled toward the inner sleeve 20, the plug 42 will squeeze the gas above the air chamber 11 and push the gas toward the one-way valve 21, and flow to the connecting pipe 142 and then flow to the air pipe 141 and the pressure gauge 50; at the same time, the gas will also flow from the vent hole 31 through the first inlet portion 341 through the front spacing hole 131 and fill the air chamber 11 below the plug 42 for inflation; when the piston 40 moves toward the switching valve body 30, the gas will flow to the front spacing hole 131 through the first inlet portion 341 and fill the air chamber 11 below the plug 42 for inflation; when the piston 40 moves toward the switching valve body 30, the gas will flow to the front spacing hole 131 through the first inlet portion 341 and fill the air chamber 11 below the plug 42 for inflation. When the air inlet check valve 221 of the air inlet portion 22 draws the outside air into the air chamber 11 above the plug portion 42, and at the same time, the plug portion 422 also squeezes the gas in the lower air chamber 11 to move toward the second air inlet portion 342 through the rear spacing hole 132, so that the gas flows to the ventilation flow channel 32 and then moves toward the air pipe 141 and the connecting pipe 142 of the air guide cover 14, so that the gas in the air pipe 141 can be inflated, and the gas flowing to the connecting pipe 142 can also drive the pressure gauge 50 to display the gas pressure value; then the piston 40 is moved toward the inner sleeve 20, and the above-mentioned cycle action is repeated, so that the piston 40 can produce the effect of compressed air inflating regardless of the direction of movement;

[0045] Please refer to Fig.13 and 14 When the air pump is to be pumped, the switching valve body 30 is first rotated to align the outlet valve 35 with the spacing hole 13, so that the inlet valve 34 does not move; then, the piston 40 can be pulled to reciprocate in the air chamber 11. When the piston 40 is pulled toward the inner sleeve 20, the plug 42 squeezes the gas above the air chamber 11 and pushes the gas toward the one-way valve 21 and flows toward the connecting pipe 142; the gas is sucked out from the air pipe 141 and the connecting pipe 142 to the ventilation flow channel 32 and flows through the second outlet portion 352 through the rear spacing hole 13. The air chamber 11 below the plug portion 42 is filled with the partition hole 132; when the piston 40 moves toward the switching valve body 30, the plug portion 422 will also squeeze the gas in the lower air chamber 11 to move toward the first air outlet portion 351 through the front partition hole 131, so that the gas flows to the vent hole 31 and then moves to the outside, so that the gas in the air pipe 141 and the connecting pipe 142 can be discharged; then the piston 40 is moved toward the inner sleeve 20, and the above-mentioned cyclic action is repeated, so that the piston 40 can produce the effect of discharging the air in the air pipe 141 and the connecting pipe 142.

[0046] The two-stage large-volume air pump provided by the present invention can produce the effects of inflation and exhaustion through the switching valve body; compared with the conventional large-volume air pump that can only provide a single-direction inflation effect, the two-stage large-volume air pump known in the present invention can produce two different actions through the switching of the switching valve body, thereby improving its practicality.

[0047] The above embodiments are only for explaining the technical features of the present invention and are not intended to limit the present invention. Any structural design equivalent to the present invention should be within the scope of the present invention. The air pump provided by the present invention is a first-of-its-kind structure in the field of the present technology and has progressive effects, and the application is filed in accordance with the law.

Claims

1. A two-stage large volume air pump, characterized in that: Contains: A body having an air chamber in the center thereof, a valve chamber disposed on one side of the air chamber, the valve chamber being connected to the air chamber, and one end of the valve chamber being an open end; a mounting hole disposed at a position away from the valve chamber; a one-way valve disposed at a position of the body close to the mounting hole, the one-way valve allowing gas to flow out of the air chamber; A switching valve body is arranged in the valve chamber of the main body, and a vent hole and a ventilation flow channel are arranged at both ends of the switching valve body; an inlet valve and an outlet valve are arranged around the switching valve body, and the inlet valve and the outlet valve can have different gas flow directions between the vent hole and the ventilation flow channel. The switching valve body is pivotally arranged in the valve chamber, and the switching valve body can switch to communicate with the air chamber through the inlet valve or the outlet valve; A piston having a rod body and a plug portion, the piston is disposed in the air chamber and reciprocates, the plug portion seals the air chamber and separates the switching valve body and the one-way valve; A connecting pipe is arranged between the switching valve body and the one-way valve to connect the one-way valve with the ventilation channel.

2. The two-stage large volume air pump according to claim 1, characterized in that: The switching valve body is cylindrical and has a partition plate in the center. The air inlet valve includes a first air inlet portion and a second air inlet portion, and the first air inlet portion and the second air inlet portion are arranged on both sides of the partition plate; the air outlet valve includes a first air outlet portion and a second air outlet portion, and the first air outlet portion and the second air outlet portion are arranged on both sides of the partition plate; the switching valve body is pivoted in the valve chamber and can be rotated to switch the air inlet valve or the air outlet valve to be connected with the air chamber.

3. The two-stage large volume air pump according to claim 2, characterized in that: A positioning groove is arranged on the outer side of the switching valve body, and a positioning column is arranged on the main body to limit the positioning groove, so that the rotation position of the switching valve body is limited.

4. The two-stage large volume air pump as claimed in claim 2, characterized in that: The main body is provided with two spacing holes at the junction of the air chamber and the valve chamber, and the two spacing holes can be communicated with the air inlet valve or the air outlet valve.

5. The two-stage large volume air pump according to claim 1, characterized in that: The main body is provided with an air leakage hole at the side of the cylinder near the mounting hole; a air leakage switch is covered on the air leakage hole and has a track and a valve plug. The valve plug can move along the track to open or close the air leakage hole.

6. The two-stage large volume air pump as claimed in claim 5, characterized in that; It further comprises a pressure gauge, one side of which is provided with the air release switch, and a mounting hole is provided on the pressure gauge. The main body is provided with a stopper so that the mounting hole can be installed on the main body and positioned by the stopper; the pressure gauge is connected to the connecting pipe.

7. The two-stage large volume air pump according to claim 1, characterized in that: It further comprises an inner sleeve and a cover body, the one-way valve and at least one air inlet portion are arranged on the inner sleeve; the inner sleeve is inserted from the side of the mounting hole, an inner channel is penetrated in the center of the inner sleeve, and the rod of the piston passes through the inner channel; the cover body covers the outer side of the mounting hole so that the inner sleeve can be fixed in position; and a through hole is arranged on the cover body for the rod of the piston to pass through.

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