Air quantity conversion inflator

Abstract

The utility model discloses an air quantity conversion inflator, and belongs to the technical field of vehicle accessories. A main body of the inflator structure comprises an inner pipe, a middle pipe and an outer pipe which are sequentially sleeved from inside to outside; the air flow adjusting structure is located at the top of the inflator structure and comprises a pressure adjusting base and a pressure adjusting sliding plate. The pressure regulating seat is fixedly arranged at the top of the inner pipe, fixedly connected with the inner pipe and communicated with the inner pipe through an air passage; the pressure adjusting sliding plate is located at an air channel opening of the pressure adjusting base and can slide left and right. A groove is formed in the bottom of the pressure adjusting sliding plate; when the pressure regulating sliding plate slides to the left side, the pressure regulating sliding plate seals the air channel opening; when the pressure regulating slide plate slides to the right side, the air passage is communicated with the external environment through a groove in the bottom of the pressure regulating slide plate; the pressure regulating seat is located in the outer pipe and fixedly connected with the outer pipe. According to the inflator, switching between high-air-pressure inflation and large-air-flow inflation of the inflator can be simply achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle accessories, and in particular relates to an air volume conversion air pump. Background Art

[0002] Air pumps are tools used in our daily life to inflate tires of bicycles, baby carriages, etc. At present, there are single-cylinder air pumps, double-cylinder air pumps, internal booster air pumps, etc. on the market. The most common ones are single-cylinder air pumps. However, the current air pumps generally have the problem of single use. It is impossible to use the same air pump to achieve both high-pressure and large-volume air pumping. Utility Model Content

[0003] The utility model aims to overcome the defects of the prior art and provide a switchable air pump with a built-in high-pressure bag and a small air volume; the utility model can simply realize the switching between high-pressure and large-volume air pump.

[0004] The technical problem proposed by the utility model is solved in this way:

[0005] A gas volume conversion pump comprises a gas volume adjustment structure and a gas cylinder structure; the main body of the gas cylinder structure is an inner tube, a middle tube and an outer tube which are sequentially mounted from the inside to the outside;

[0006] The gas volume regulating structure is located at the top of the gas cylinder structure, and includes a pressure regulating seat and a pressure regulating slide plate; the pressure regulating seat is fixedly arranged on the top of the inner tube, the two are fixedly connected and the airway is communicated; the pressure regulating slide plate is located at the airway opening of the pressure regulating seat, and can slide left and right; a groove is provided at the bottom of the pressure regulating slide plate; when the pressure regulating slide plate slides to the left, the pressure regulating slide plate closes the airway opening; when the pressure regulating slide plate slides to the right, the airway is communicated with the external environment through the groove at the bottom of the pressure regulating slide plate; the pressure regulating seat is located in the outer tube, and the two are fixedly connected.

[0007] Furthermore, a locking sleeve is provided on the outer wall of the outer tube; the top of the locking sleeve is a necking structure, and the necking structure is pressed on the upper surface of the adjusting slide; the locking sleeve is also provided with a sliding groove, and the adjusting slide is located in the sliding groove and can slide left and right along the sliding groove.

[0008] Furthermore, the locking sleeve is fixed to the outer pipe thread, and the pressure regulating seat is fixed and pressed by the pressure regulating slide plate.

[0009] Furthermore, the top end of the intermediate tube is fixedly connected with an upper piston, which can move along the central axis of the outer tube. The top end of the inner tube passes through the upper piston, and a straight hole is provided in the middle of the upper piston for connecting the chamber between the inner tube and the intermediate tube and the inner cavity of the outer tube.

[0010] A lower piston is fixedly provided at the bottom end of the inner tube, and the lower piston is located in the middle tube and can move along the central axis of the middle tube; a rectangular hole is provided on the lower piston, and the rectangular hole communicates with the inside and outside of the inner tube;

[0011] The outer sleeve is sleeved on the outer wall of the middle tube, one end of which is fixedly connected to the middle tube, and the other end is connected to the outer wall of the barometer to form a closed air cavity. The air pressure contact of the barometer is located in the outer sleeve; the air outlet pipe is connected to the outer sleeve.

[0012] Furthermore, the air outlet pipe vertically penetrates the outer sleeve, and a through hole penetrating to the inner cavity of the outer sleeve is provided in the middle position thereof.

[0013] Further, one end of the air outlet pipe is used for air outlet, and the other end is provided with an exhaust structure; the exhaust structure includes an airtight needle, a spring and a sealing plate; the sealing plate is located at the other end of the air outlet pipe, the central axes of the airtight needle and the sealing plate coincide and slide together, and a baffle is provided on the airtight needle; one end of the airtight needle is located in the air outlet pipe, the sealing plate is located on the outside of the baffle, and the spring is located on the inside of the baffle;

[0014] When the spring is in a compressed state, there is a gap between the sealing plate and the baffle plate for exhaust; when the spring is in an extended state, the sealing plate and the baffle plate fit tightly to achieve a closed air cavity.

[0015] Furthermore, grooves for accommodating rubber rings are provided on the outer edges of the upper piston and the lower piston, and the rubber rings are located in the corresponding grooves, wherein the top side of the upper piston groove and the bottom side of the lower piston groove both have cracks; the rubber ring located in the groove and its crack constitute a gas one-way valve structure.

[0016] Furthermore, a groove II for accommodating a rubber ring is provided in the middle position of the inner side of the upper piston; a top cavity is provided at the inner top of the upper piston; a straight hole II is provided on the inner tube, and when the air pump is not in working state, the straight hole II is directly opposite to the position of the top cavity of the upper piston.

[0017] Furthermore, the top side of the upper piston groove is a through hole, and the rubber ring can slide up and down in the groove; when the rubber ring is located on the top side, the through hole is closed; when it is located on the bottom side, the through hole is opened.

[0018] Furthermore, the lower piston and the inner tube are an integrated structure, and a one-way valve is also provided in the outer sleeve, and the outer wall of the one-way valve is in close contact with the inner wall of the outer sleeve; the one-way valve is located below the lower piston.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] The utility model realizes the conversion between high air pressure and large air volume by adjusting the cooperation between the slide plate and the adjustment seat; wherein, when the adjustment slide plate blocks the airway, the function of large air volume is realized, and when the adjustment slide plate opens the airway, the function of high air pressure is realized.

[0021] The setting of the pressure gauge can provide more obvious monitoring of the pressure of the air pipe, thus achieving better control of the pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the utility model.

[0023] Figure 2 This is a schematic diagram of the internal structure of the utility model (the main body is the middle tube).

[0024] Figure 3 This is a schematic diagram of the internal structure of the utility model (the main body is the inner tube).

[0025] Figure 4 It is a structural schematic diagram of the upper piston of the utility model.

[0026] Figure 5 It is a structural schematic diagram of the lower piston of the utility model.

[0027] Figure 6 It is a structural cross-sectional view of the upper part of the utility model.

[0028] Figure 7 It is a cross-sectional view of the lower part of the structure of the utility model.

[0029] Figure 8 It is a cross-sectional view of the exhaust structure of the utility model.

[0030] In the figure: 1, locking sleeve, 2, outer tube, 3, outer sleeve, 4, needle button, 5 (11), barometer, 6, air outlet pipe, 7, pressure regulating seat, 8, upper piston, 9, middle sleeve, 10 (21), one-way valve, 11 (5), barometer, 12 (7-3), straight hole, 13, air pressure contact, 14, through hole between air outlet pipe and outer sleeve, 15, pressure regulating slide plate, 16, straight hole II, 17, middle tube, 18, Inner tube, 19, lower piston, 20, rectangular hole, 21 (10), one-way valve, 7-1, through hole, 7-2, groove of upper piston, 7-3 (12), straight hole, 19-1, slit I of lower piston, 19-2, groove I of lower piston, 19-3, groove II of lower piston, 19-4, slit II of lower piston, 4-1, airtight needle, 4-2, air hole, 4-3, baffle, 4-4, sealing plate. DETAILED DESCRIPTION

[0031] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0032] A gas volume conversion pump comprises a gas volume adjustment structure and a gas cylinder structure; the main body of the gas cylinder structure is an inner tube, a middle tube and an outer tube which are sequentially mounted from the inside to the outside;

[0033] The gas volume regulating structure is located at the top of the gas cylinder structure, and includes a pressure regulating seat and a pressure regulating slide plate; the pressure regulating seat is fixedly arranged on the top of the inner tube, the two are fixedly connected and the airway is communicated; the pressure regulating slide plate is located at the airway opening of the pressure regulating seat, and can slide left and right; a groove is provided at the bottom of the pressure regulating slide plate; when the pressure regulating slide plate slides to the left, the pressure regulating slide plate closes the airway opening; when the pressure regulating slide plate slides to the right, the airway is communicated with the external environment through the groove at the bottom of the pressure regulating slide plate; the pressure regulating seat is located in the outer tube, and the two are fixedly connected.

[0034] Furthermore, a locking sleeve is provided on the outer wall of the outer tube; the top of the locking sleeve is a necking structure, and the necking structure is pressed on the upper surface of the adjusting slide; the locking sleeve is also provided with a sliding groove, and the adjusting slide is located in the sliding groove and can slide left and right along the sliding groove.

[0035] Furthermore, the locking sleeve is fixed to the outer pipe thread, and the pressure regulating seat is fixed and pressed by the pressure regulating slide plate.

[0036] Furthermore, the top end of the intermediate tube is fixedly connected with an upper piston, which can move along the central axis of the outer tube. The top end of the inner tube passes through the upper piston, and a straight hole is provided in the middle of the upper piston for connecting the chamber between the inner tube and the intermediate tube and the inner cavity of the outer tube.

[0037] A lower piston is fixedly provided at the bottom end of the inner tube, and the lower piston is located in the middle tube and can move along the central axis of the middle tube; a rectangular hole is provided on the lower piston, and the rectangular hole communicates with the inside and outside of the inner tube;

[0038] The outer sleeve is sleeved on the outer wall of the middle tube, one end of which is fixedly connected to the middle tube, and the other end is connected to the outer wall of the barometer to form a closed air cavity. The air pressure contact of the barometer is located in the outer sleeve; the air outlet pipe is connected to the outer sleeve.

[0039] Furthermore, the air outlet pipe vertically penetrates the outer sleeve, and a through hole penetrating to the inner cavity of the outer sleeve is provided in the middle position thereof.

[0040] Further, one end of the air outlet pipe is used for air outlet, and the other end is provided with an exhaust structure; the exhaust structure includes an airtight needle, a spring and a sealing plate; the sealing plate is located at the other end of the air outlet pipe, the central axes of the airtight needle and the sealing plate coincide and slide together, and a baffle is provided on the airtight needle; one end of the airtight needle is located in the air outlet pipe, the sealing plate is located on the outside of the baffle, and the spring is located on the inside of the baffle;

[0041] When the spring is in a compressed state, there is a gap between the sealing plate and the baffle plate for exhaust; when the spring is in an extended state, the sealing plate and the baffle plate fit tightly to achieve a closed air cavity.

[0042] Furthermore, grooves for accommodating rubber rings are provided on the outer edges of the upper piston and the lower piston, and the rubber rings are located in the corresponding grooves, wherein the top side of the upper piston groove and the bottom side of the lower piston groove both have cracks; the rubber ring located in the groove and its crack constitute a gas one-way valve structure.

[0043] Furthermore, a groove II for accommodating a rubber ring is provided in the middle position of the inner side of the upper piston; a top cavity is provided at the inner top of the upper piston; a straight hole II is provided on the inner tube, and when the air pump is not in working state, the straight hole II is directly opposite to the position of the top cavity of the upper piston.

[0044] Furthermore, the top side of the upper piston groove is a through hole, and the rubber ring can slide up and down in the groove; when the rubber ring is located on the top side, the through hole is closed; when it is located on the bottom side, the through hole is opened.

[0045] Furthermore, the lower piston and the inner tube are an integrated structure.

[0046] Reference Figures 1 to 8 , the following is a more specific description:

[0047] In this embodiment, the inner tube, the middle tube and the outer tube are sequentially mounted from the inside to the outside; during the inflation process, the inner tube and the outer tube are relatively stationary, and the middle tube moves up and down; the upper piston moves in the middle tube, and the lower piston moves in the outer tube.

[0048] The base is sealed and connected to the middle pipe.

[0049] like Figure 6 The pressure regulating seat and the pressure regulating slide at the top of the inner tube cooperate to realize the conversion between high pressure and large volume; when the pressure regulating slide blocks the airway, the large volume function is realized, and when the pressure regulating slide opens the airway, the high pressure function is realized. The airway blocking is achieved by the lateral movement of the pressure regulating slide to drive the position of the groove relative to the airway.

[0050] Reference Figure 5 The lower piston is an annular structure, the upper inner diameter section of which is sleeved on the outer wall of the inner tube, the end of which is located above the one-way valve, and the outer wall of which cooperates with the inner wall of the intermediate tube and is slidably connected.

[0051] Reference Figure 4 The upper piston can move along the central axis of the outer tube, and a straight hole connecting the chamber between the inner tube and the middle tube and the inner cavity of the outer tube is provided in the middle of the upper piston;

[0052] Reference Figure 2 The fastener is fixed at the bottom end of the outer tube; the middle tube can slide relative to it.

[0053] Implementation principle:

[0054] The locking sleeve and the outer sleeve are pulled up to separate them. At this time, the middle tube will slide relative to the relatively stationary inner tube and outer tube, and the middle tube moves downward. The rubber ring of the upper piston blocks the through hole due to the friction force of the inner wall of the outer tube; the rubber ring of the lower piston partially sinks into the crack due to the friction force of the inner wall of the middle tube, so that the outer tube cavities on the upper and lower sides of the lower piston of the middle chamber are connected, and because of the rectangular hole set on the lower piston, the inner cavity of the inner tube and the middle chamber are connected;

[0055] The gas enters from the gap between the bottom of the outer tube and the middle tube, enters the inner cavity of the inner tube through the straight hole II on the inner tube, and enters the middle chamber through the rectangular hole; at this time, the gas fills the entire inner cavity of the inner tube, the cavity between the outer tube and the inner tube, and the cavity inside the middle tube;

[0056] When large volume is used, the pressure regulating slide is moved to block the airway; the distance between the locking sleeve and the outer sleeve is reduced by pressing, and the middle tube will slide relative to the relatively stationary inner tube and outer tube again, the middle tube moves upward, and the rubber ring of the upper piston opens the through hole due to the friction force of the inner wall of the outer tube; the rubber ring of the lower piston is blocked due to the friction force of the inner wall of the middle tube;

[0057] As the folded middle tube moves, the inner cavity of the inner tube and the cavity between the outer tube and the inner tube are pressed into the inner tube cavity as the upper piston moves upward, and enter the cavity inside the middle tube through the rectangular hole (at this time, the upper and lower rubber rings of the rectangular hole are both sealed, and under the action of high pressure, they will press on the lower rubber ring, causing it to partially fall into the crack, opening the airway to the inner cavity of the middle tube); as the lower piston moves downward, the gas in the cavity inside the middle tube is pressed into the one-way valve for inflating.

[0058] The total content of the atmospheric volume includes the gas in the entire inner cavity of the outer tube and the inner cavity of the middle tube.

[0059] When the high air pressure (small air volume) of this embodiment is used: the pressure regulating slide plate is moved to open the airway; the distance between the locking sleeve and the outer sleeve is reduced by pressing, and the middle tube slides relative to the relatively stationary inner tube and outer tube again, the middle tube moves upward, and the rubber ring of the upper piston opens the through hole due to the friction force of the inner wall of the outer tube; the rubber ring of the lower piston is blocked due to the friction force of the inner wall of the middle tube;

[0060] Since the airway opening of the inner tube is in an open state, the gas in the inner cavity of the inner tube and the cavity between the outer tube and the inner tube will be directly discharged under the action of pressure; only the gas in the inner cavity of the middle tube undergoes the inflation process.

[0061] Reference Figure 8, press the button at the end of the airtight needle, the spring is compressed, and the air hole is connected to the air outlet pipe to exhaust. Under normal conditions, the spring extends, pressing the baffle and the sealing plate together to achieve sealing.

Claims

1. A gas volume conversion pump, comprising a gas volume adjustment structure and a cylinder structure; characterized in that: The main body of the gas cylinder structure is an inner tube, a middle tube and an outer tube which are sequentially mounted from the inside to the outside; The gas volume regulating structure is located at the top of the gas cylinder structure, and includes a pressure regulating seat and a pressure regulating slide plate; the pressure regulating seat is fixedly arranged on the top of the inner tube, the two are fixedly connected and the airway is communicated; the pressure regulating slide plate is located at the airway opening of the pressure regulating seat, and can slide left and right; a groove is provided at the bottom of the pressure regulating slide plate; when the pressure regulating slide plate slides to the left, the pressure regulating slide plate closes the airway opening; when the pressure regulating slide plate slides to the right, the airway is communicated with the external environment through the groove at the bottom of the pressure regulating slide plate; the pressure regulating seat is located in the outer tube, and the two are fixedly connected.

2. The air volume conversion pump according to claim 1, characterized in that: A locking sleeve is provided on the outer wall of the outer tube; the top of the locking sleeve is a constricted structure, which is pressed on the upper surface of the adjusting slide; a sliding groove is also provided on the locking sleeve, and the adjusting slide is located in the sliding groove and can slide left and right along the sliding groove.

3. The air volume conversion pump according to claim 2, characterized in that: The locking sleeve is fixed to the outer pipe thread and the pressure regulating seat is fixed and pressed by the pressure regulating slide plate.

4. The air volume conversion pump according to claim 1, characterized in that: The top end of the intermediate tube is fixedly connected with an upper piston, which can move along the central axis of the outer tube. The top end of the inner tube passes through the upper piston, and a straight hole for connecting the chamber between the inner tube and the intermediate tube and the inner cavity of the outer tube is provided in the middle of the upper piston. A lower piston is fixedly provided at the bottom end of the inner tube, and the lower piston is located in the middle tube and can move along the central axis of the middle tube; a rectangular hole is provided on the lower piston, and the rectangular hole communicates with the inside and outside of the inner tube; The outer sleeve is sleeved on the outer wall of the middle tube, one end of which is fixedly connected to the middle tube, and the other end is connected to the outer wall of the barometer to form a closed air cavity. The air pressure contact of the barometer is located in the outer sleeve; the air outlet pipe is connected to the outer sleeve.

5. The air volume conversion pump according to claim 4, characterized in that: The air outlet pipe vertically penetrates the outer sleeve, and a through hole penetrating to the inner cavity of the outer sleeve is provided in the middle position thereof.

6. The air volume conversion pump according to claim 5, characterized in that: One end of the air outlet pipe is used for air outlet, and the other end is provided with an exhaust structure; the exhaust structure includes an airtight needle, a spring and a sealing plate; the sealing plate is located at the other end of the air outlet pipe, the central axes of the airtight needle and the sealing plate coincide with each other and are slidably matched, and a baffle is provided on the airtight needle; one end of the airtight needle is located in the air outlet pipe, the sealing plate is located on the outside of the baffle, and the spring is located on the inside of the baffle; When the spring is in a compressed state, there is a gap between the sealing plate and the baffle plate for exhaust; when the spring is in an extended state, the sealing plate and the baffle plate fit tightly to achieve a closed air cavity.

7. The air volume conversion pump according to claim 4, characterized in that: The outer edges of the upper piston and the lower piston are also provided with grooves for accommodating rubber rings, and the rubber rings are located in the corresponding grooves, wherein the top side of the upper piston groove and the bottom side of the lower piston groove both have cracks; the rubber ring located in the groove and its crack constitute a gas one-way valve structure.

8. The air volume conversion pump according to claim 4, characterized in that: A groove II for accommodating a rubber ring is provided in the middle of the inner side of the upper piston; a top cavity is provided at the inner top of the upper piston; a straight hole II is provided on the inner tube, and when the air pump is not in operation, the straight hole II is directly opposite to the position of the top cavity of the upper piston.

9. The air volume conversion pump according to claim 7, characterized in that: The top side of the upper piston groove is a through hole, and the rubber ring can slide up and down in the groove; when the rubber ring is located on the top side, the through hole is closed; when it is located on the bottom side, the through hole is opened.

10. The air volume conversion pump according to claim 4, characterized in that: The lower piston and the inner tube are an integrated structure; a one-way valve is also arranged in the outer sleeve, and the outer wall of the one-way valve is in close contact with the inner wall of the outer sleeve; the one-way valve is located below the lower piston.

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