Synchronous double-cylinder high-pressure inflator pump capable of pressurizing gas step by step

Abstract

The utility model relates to the field of double-cylinder high-pressure inflator pumps, and discloses a synchronous double-cylinder high-pressure inflator pump capable of pressurizing gas step by step, which comprises a cover body and a crankshaft rotationally mounted in the cover body, the synchronous double-cylinder high-pressure inflator pump further comprises two sets of telescopic air pipes fixed in the cover body, an inflator fixed to the telescopic ends of the lower portions of the telescopic air pipes in a penetrating mode, a piston rod assembled in the inflator in a sliding mode, a push rod rotationally installed on the piston rod and an inflation pipe connected to the end faces of the telescopic air pipes in a penetrating mode. A displacement adjusting assembly for adjusting the distance between the push rod and the axis of the crankshaft is mounted on the crankshaft; an inflation volume adjusting assembly for adjusting the inflation volume in the inflator is mounted in the cover body; according to the inflator pump, the inflation volume can be adjusted according to use requirements, and the practicability is high.

Description

Technical Field

[0001] The utility model relates to the field of double-cylinder high-pressure air pumps, and particularly to a synchronous double-cylinder high-pressure air pump with gas step-by-step pressurization. Background Art

[0002] The principle of a high-pressure air pump is that the motor operation drives the crankshaft to rotate, and the crankshaft controls the piston rod to reciprocate in the air cylinder. When pumping air, the valve plate of the communicating vessel is pushed open by the air pressure of the atmosphere, and the gas enters the air cylinder. When inflating a tire, the valve plate is closed by the air pressure in the air cylinder, and the gas enters the tire. The double-cylinder high-pressure air pump has a greater inflation pressure and higher inflation efficiency.

[0003] Chinese Patent Application CN117703710A discloses a portable double-cylinder high-pressure air pump, which includes a high-pressure air cylinder base, high-pressure cylinders and a transmission device. High-pressure cylinders with more than one cylinder body are provided on the left and right sides of the end of the high-pressure air cylinder base. The transmission device includes a motor and a speed reducer. The transmission shafts at both ends of the speed reducer are connected with cranks. The movable end of the high-pressure cylinder is connected with a connecting rod in a shaft connection manner, and the other end of the connecting rod is connected with an eccentric shaft at the output end of the crank. The motor is fixed on the outer wall of the speed reducer and is surrounded by the space formed by the high-pressure air cylinder base, high-pressure cylinders and the speed reducer. This air pump is provided with two high-pressure cylinders, so as to provide enough high-pressure gas for inflation. Moreover, more than one cylinder body is provided in the high-pressure cylinder, and the gas is continuously compressed by multiple cylinder bodies of different sizes. The motor is located at the center of the air pump, which can save space, make the volume of the air pump smaller and more convenient to carry.

[0004] The inflation volume of the double-cylinder high-pressure air pump is limited by the volume of the air cylinder and the moving range of the piston rod. The piston rod reciprocates once to complete two processes of air intake and compressed inflation. In some air pumps, the inflation volume when the piston rod reciprocates once is limited, which is not convenient to adjust the inflation volume of the air pump according to the usage situation, and the air pump cannot efficiently inflate tires with different requirements. Summary of the Utility Model

[0005] Aiming at the above problems, a synchronous double-cylinder high-pressure air pump with gas step-by-step pressurization is provided. By adjusting the displacement adjustment component and the inflation volume adjustment component, the inflation volume when the piston rod reciprocates once is adjusted, which solves the problems that the inflation volume of the double-cylinder high-pressure air pump is limited by the volume of the air cylinder and the moving range of the piston rod, the piston rod reciprocates once to complete two processes of air intake and compressed inflation, in some air pumps, the inflation volume when the piston rod reciprocates once is limited, which is not convenient to adjust the inflation volume of the air pump according to the usage situation, and the air pump cannot efficiently inflate tires with different requirements.

[0006] To solve the problems of the prior art, the utility model provides a synchronous double-cylinder high-pressure air pump with step-by-step gas pressurization, which includes a cover body and a crankshaft rotatably installed in the cover body. The synchronous double-cylinder high-pressure air pump further includes two groups of telescopic air pipes fixed in the cover body, air cylinders penetrating and fixed at the telescopic ends below the telescopic air pipes, piston rods slidably assembled in the air cylinders, push rods rotatably installed on the piston rods, and air filling pipes penetrating and connected to the end faces of the telescopic air pipes; the push rods are movably connected to the crankshaft eccentrically, and a displacement adjustment assembly for adjusting the distance between the push rod and the axis of the crankshaft is installed on the crankshaft; an air filling amount adjustment assembly for adjusting the internal air filling volume of the air cylinder is installed in the cover body.

[0007] Preferably, the displacement adjustment assembly includes a lead screw rotatably installed on the crankshaft, an internally threaded block threadedly assembled on the lead screw, a slider fitted and slidably installed in the crankshaft, the slider is fixedly assembled with the internally threaded block, and the slider is rotatably assembled with the push rod.

[0008] Preferably, the air filling amount adjustment assembly includes a guiding slide rail fixed in the cover body, a guiding slide frame slidably installed on the guiding slide rail, the guiding slide frame is fixedly installed on the air cylinder, a positioning frame is fixedly installed on the guiding slide frame, and the positioning frame is slidably installed on the cover body.

[0009] Preferably, a fixed-distance limiting assembly for limiting the longitudinal movement position of the positioning frame is installed in the cover body.

[0010] Preferably, the fixed-distance limiting assembly includes a telescopic frame fixed in the cover body, a limiting frame fixedly installed at the telescopic end of the telescopic frame, repulsive magnetic pieces are installed on the limiting frame and the telescopic frame, card slots are equidistantly opened on the limiting frame, and a card strip is fixedly installed on the positioning frame, and the card strip is snap-fitted in the card slots.

[0011] Preferably, a load-bearing enhancement assembly for keeping the rotation of the crankshaft stable is installed in the cover body.

[0012] Preferably, the load-bearing enhancement assembly includes a sun gear rotatably installed on the cover body, three planetary gears are meshed and assembled beside the sun gear, an internal gear ring is externally meshed and assembled with the three planetary gears, the internal gear ring is fixedly installed in the cover body, a planetary carrier is coaxially and fixedly connected to the crankshaft, and the three planetary gears are rotatably installed on the planetary carrier.

[0013] The beneficial effects of the utility model compared with the prior art are:

[0014] 1. In the present utility model, a displacement adjustment component and an air inflation volume adjustment component are provided to adjust the air inflation volume for one reciprocating movement of the piston rod. Through the air inflation volume adjustment component, the position of the air cylinder sleeved outside the piston rod can be adjusted to adjust the volume between the air cylinder and the piston rod. Through the displacement volume adjustment component, the distance between the lower part of the push rod and the axis of the crankshaft can be adjusted. The crankshaft rotates to push the piston rod to reciprocate up and down through the push rod. After the distance between the push rod and the axis of the crankshaft is adjusted, it affects the distance of the reciprocating movement of the piston rod, thereby adjusting the air inflation volume for one reciprocating movement of the piston rod, so that the air inflator can be efficiently applied to tires with different requirements.

[0015] 2. In the present utility model, a fixed-distance limit component is provided to quantitatively adjust the air inflation volume of the air inflator. When controlling the longitudinal movement of the positioning frame, the clamping block on the positioning frame is engaged and assembled with the clamping grooves at different positions in the fixed-distance limit component. Through the engagement structure, the moving position of the air cylinder can be limited, thereby restricting the volume size between the air cylinder and the piston rod.

[0016] 3. In the present utility model, a load-bearing enhancement component is provided to keep the crankshaft rotating stably to output power under different air inflation volumes. The load-bearing enhancement component drives the crankshaft to rotate through the meshing structure of the sun gear, planet gear and internal gear ring. Through the gear meshing and deceleration structure, the load-bearing capacity of the crankshaft rotation can be increased to keep the crankshaft rotating stably. Description of the Drawings

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the cover body of a synchronous double-cylinder high-pressure air inflator with step-by-step gas pressurization.

[0018] Figure 2 It is a cross-sectional structural schematic diagram of the cover body of a synchronous double-cylinder high-pressure air inflator with step-by-step gas pressurization.

[0019] Figure 3 It is a three-dimensional structural schematic diagram of the air cylinder of a synchronous double-cylinder high-pressure air inflator with step-by-step gas pressurization.

[0020] Figure 4 It is a three-dimensional structural schematic diagram of the piston rod of a synchronous double-cylinder high-pressure air inflator with step-by-step gas pressurization.

[0021] Figure 5 It is a three-dimensional structural schematic diagram of the planet gear of a synchronous double-cylinder high-pressure air inflator with step-by-step gas pressurization.

[0022] Figure 6 It is a three-dimensional structural schematic diagram of the push rod of a synchronous double-cylinder high-pressure air inflator with step-by-step gas pressurization.

[0023] Figure 7 It is a three-dimensional structural schematic diagram of the fixed-distance limit component of a synchronous double-cylinder high-pressure air inflator with step-by-step gas pressurization.

[0024] Figure 8 It is a three-dimensional structure schematic diagram of the limit frame of a synchronous double-cylinder high-pressure air inflation pump with step-by-step gas pressurization.

[0025] Figure 9 It is a side view structure schematic diagram of the telescopic frame of a synchronous double-cylinder high-pressure air inflation pump with step-by-step gas pressurization.

[0026] The reference numerals in the figure are:

[0027] 1. Cover body; 11. Crankshaft; 12. Telescopic air pipe; 13. Cylinder; 14. Piston rod; 15. Push rod; 16. Inflation pipe; 2. Displacement adjustment assembly; 21. Lead screw; 22. Internal thread block; 23. Slide block; 3. Inflation volume adjustment assembly; 31. Guide slide rail; 32. Guide slide frame; 33. Positioning frame; 4. Fixed-distance limit assembly; 41. Telescopic frame; 42. Limit frame; 43. Magnetic sheet; 44. Card slot; 45. Card strip; 5. Bearing enhancement assembly; 51. Sun gear; 52. Planet gear; 53. Internal gear ring; 54. Planet carrier. Specific embodiments

[0028] In order to further understand the features, technical means, specific purposes and functions achieved by the present invention, the present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0029] See Figures 1-4 and Figure 7 As shown, a synchronous double-cylinder high-pressure air inflation pump with step-by-step gas pressurization includes a cover body 1 and a crankshaft 11 rotatably installed in the cover body 1. The synchronous double-cylinder high-pressure air inflation pump further includes two groups of telescopic air pipes 12 fixed in the cover body 1, cylinders 13 penetrating and fixed at the telescopic ends below the telescopic air pipes 12, piston rods 14 slidably assembled in the cylinders 13, push rods 15 rotatably installed on the piston rods 14, and inflation pipes 16 penetrating and connected to the end faces of the telescopic air pipes 12; the push rod 15 is movably connected to the crankshaft 11 eccentrically, and a displacement adjustment assembly 2 for adjusting the distance between the push rod 15 and the axis of the crankshaft 11 is installed on the crankshaft 11; an inflation volume adjustment assembly 3 for adjusting the internal inflation volume of the cylinder 13 is installed in the cover body 1; two groups of the crankshaft 11, piston rod 14, cylinder 13 and telescopic air pipe 12 are symmetrically arranged about the center of the cover body 1 to form a double-cylinder structure. During the process of the crankshaft 11 rotating to push the piston rod 14 to reciprocate, inflation is carried out. The piston rod 14 reciprocates to continuously inflate, and the gas is pressurized step by step to quickly complete the inflation process of the tire.

[0030] According to the inflation requirement, the inflation volume of the air pump can be adjusted to adjust the inflation efficiency of the air pump. By means of the displacement adjustment assembly 2, the distance between the lower part of the push rod 15 and the axis of the crankshaft 11 can be adjusted. When the crankshaft 11 rotates, it drives the two ends of the push rod 15 to rotate. The push rod 15 pushes the piston rod 14 to move up and down reciprocally. The change in the distance between the push rod 15 and the axis of the crankshaft 11 affects the distance of the reciprocal movement of the piston rod 14, so that the inflation volume can be adjusted by the piston rod 14. By means of the inflation volume adjustment assembly 3, the position of the air cylinder 13 sleeved on the piston rod 14 can be adjusted, so as to adjust the volume of the closed space between the inside of the air cylinder 13 and the piston rod 14, thus realizing the adjustment of the inflation volume of the high-pressure air pump.

[0031] See Figures 1-6 As shown, the displacement adjustment assembly 2 includes a lead screw 21 rotatably installed on the crankshaft 11. An internally threaded block 22 is threadedly assembled on the lead screw 21. A slider 23 is fitted and slidably installed in the crankshaft 11. The slider 23 is fixedly assembled with the internally threaded block 22. The slider 23 is rotatably assembled with the push rod 15; a detachable end cover structure is provided on the housing 1. After removing the end cover, the rotation of the lead screw 21 can be controlled.

[0032] The rotation of the lead screw 21 controls the directional movement of the internally threaded block 22 under the action of the thread transmission. The internally threaded block 22 drives the slider 23 to slide on the crankshaft 11. The slider 23 is rotatably assembled with the lower end of the push rod 15. The movement of the slider 23 can adjust the distance between the lower end of the push rod 15 and the axis of the crankshaft 11, so as to adjust the distance of the reciprocal movement of the piston rod 14.

[0033] See Figure 2 、 Figure 3 and Figure 7 As shown, the inflation volume adjustment assembly 3 includes a guiding slide rail 31 fixed in the housing 1. A guiding slide carriage 32 is slidably installed on the guiding slide rail 31. The guiding slide carriage 32 is fixedly installed on the air cylinder 13. A positioning frame 33 is fixedly installed on the guiding slide carriage 32. The positioning frame 33 is slidably installed on the housing 1; a part of the positioning frame 33 is arranged outside the housing 1. By fixing the positioning frame 33 to the outside of the housing 1 with bolts, the position of the air cylinder 13 during movement adjustment can be fixed.

[0034] The movement of the positioning frame 33 can be controlled outside the housing 1. The positioning frame 33 drives the guiding slide carriage 32 to slide along the direction of the guiding slide rail 31. The guiding slide carriage 32 drives the air cylinder 13 to slide and move sleeved on the outside of the piston rod 14. The upper part of the guiding slide carriage 32 pushes the telescopic air pipe 12 to expand and contract automatically for adjustment, so as to adjust the position of the air cylinder 13 sleeved on the outside of the piston rod 14, and realize the adjustment of the volume of the sealed space between the air cylinder 13 and the piston rod 14.

[0035] See Figures 7-9As shown, a distance-limiting component 4 for restricting the longitudinal movement position of the fixed-positioning frame 33 is installed in the cover body 1.

[0036] During the movement of the adjusting air cylinder 13, under the restricting action of the distance-limiting component 4, the movement position of the air cylinder 13 can be accurately restricted, so that the inflation volume of the air pump can be adjusted quantitatively.

[0037] See Figures 7-9 As shown, the distance-limiting component 4 includes a telescopic frame 41 fixed in the cover body 1. A limiting frame 42 is fixedly installed at the telescopic end of the telescopic frame 41. Repelling magnetic sheets 43 are installed on the limiting frame 42 and the telescopic frame 41. Card slots 44 are equally spaced on the limiting frame 42. A clamping strip 45 is fixedly installed on the positioning frame 33, and the clamping strip 45 is snap-fitted in the card slots 44; the sides of the clamping strip 45 and the card slots 44 are both arc-shaped structures.

[0038] When the positioning frame 33 moves longitudinally, the positioning frame 33 drives the clamping strip 45 to move synchronously. During the longitudinal movement of the clamping strip 45, the arc-shaped structure is used to squeeze and push the limiting frame 42 to move along the telescopic direction of the telescopic frame 41. When the clamping strip 45 moves to correspond to the card slot 44, the limiting frame 42 no longer receives the squeezing force. Under the action of the magnetic repulsion force of the magnetic sheet 43, the limiting frame 42 is pushed to move towards the direction close to the clamping strip 45, so that the clamping strip 45 is snap-fitted with the card slot 44 in the limiting frame 42 to form a snap-fitting structure, and the longitudinal movement position of the positioning frame 33 can be restricted through the snap-fitting structure.

[0039] See Figures 2-6 As shown, a load-bearing enhancement component 5 for keeping the crankshaft 11 rotating stably is installed in the cover body 1.

[0040] After the inflation volume of the air pump is adjusted, the bearing capacity of the crankshaft 11 during rotation changes. With the assistance of the load-bearing enhancement component 5, the bearing capacity of the crankshaft 11 during rotation can be increased, and the crankshaft 11 can be kept rotating stably.

[0041] See Figures 2-6 As shown, the load-bearing enhancement component 5 includes a sun gear 51 rotating on the cover body 1. Three planet gears 52 are meshed and assembled beside the sun gear 51. An internal gear ring 53 is externally meshed and assembled with the three planet gears 52. The internal gear ring 53 is fixedly installed in the cover body 1. A planet carrier 54 is coaxially and fixedly connected to the crankshaft 11. The three planet gears 52 are rotatably installed on the planet carrier 54; a motor for driving the sun gear 51 to rotate is installed outside the cover body 1.

[0042] The motor operation controls the rotation of the sun gear 51. The sun gear 51 drives the rotation of the planet gear 52 through meshing transmission. The planet gear 52 is meshed and assembled with the inner side of the internal gear ring 53. Under the action of meshing transmission, the planet gear 52 rotates around the outer circumference of the sun gear 51. The planet gear 52 drives the rotation of the planet carrier 54. The planet carrier 54 is coaxially and fixedly assembled with the crankshaft 11 and can drive the crankshaft 11 to rotate. Under the action of gear transmission, the load-bearing capacity of the rotation of the crankshaft 11 can be increased, and the stability of the rotation of the crankshaft 11 can be maintained.

[0043] The above embodiments only represent one or several implementation manners of the present utility model, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the appended claims.

Claims

1. A synchronous double-cylinder high-pressure air pump for step-by-step gas pressurization, comprising a housing (1) and a crankshaft (11) rotatably mounted in the housing (1), characterized in that: The synchronous double-cylinder high-pressure air pump also includes two sets of telescopic air pipes (12) fixed in the housing (1), an air cylinder (13) penetrating and fixed at the telescopic end below the telescopic air pipe (12), a piston rod (14) slidably assembled in the air cylinder (13), a push rod (15) rotatably mounted on the piston rod (14), and an air charging pipe (16) penetrating and connected to the end surface of the telescopic air pipe (12); The push rod (15) is movably connected to the crankshaft (11) off-axis, and a displacement adjustment component (2) for adjusting the distance between the push rod (15) and the axis of the crankshaft (11) is installed on the crankshaft (11); An air filling amount adjustment component (3) for adjusting the internal air filling volume of the air cylinder (13) is installed in the cover body (1).

2. A synchronous double-cylinder high-pressure air pump with step-by-step gas pressurization according to claim 1, characterized in that: The displacement adjustment assembly (2) comprises a screw rod (21) rotatably mounted on a crankshaft (11); an internal thread block (22) is threadedly mounted on the screw rod (21); a slider (23) is slidably mounted in the crankshaft (11); the slider (23) is fixedly mounted on the internal thread block (22); and the slider (23) is rotatably mounted on a push rod (15).

3. The synchronous double-cylinder high-pressure air pump with step-by-step gas pressurization according to claim 1 is characterized in that: The inflation volume adjustment assembly (3) comprises a guide rail (31) fixed in the cover body (1), a guide slide (32) slidably mounted on the guide rail (31), the guide slide (32) is fixedly mounted on the air cylinder (13), a positioning frame (33) is fixedly mounted on the guide slide (32), and the positioning frame (33) is slidably mounted on the cover body (1).

4. A synchronous double-cylinder high-pressure air pump with step-by-step gas pressurization according to claim 3, characterized in that: The cover body (1) is provided with a distance limiting component (4) for limiting the longitudinal movement position of the positioning frame (33).

5. A synchronous double-cylinder high-pressure air pump with step-by-step gas pressurization according to claim 4, characterized in that: The distance limiting assembly (4) comprises a telescopic frame (41) fixed in the cover body (1), a limiting frame (42) is fixedly mounted on the telescopic end of the telescopic frame (41), magnetic sheets (43) that repel each other are mounted on the limiting frame (42) and the telescopic frame (41), card slots (44) are provided on the limiting frame (42) at equal intervals, a card strip (45) is fixedly mounted on the positioning frame (33), and the card strip (45) is card-engaged in the card slot (44).

6. The synchronous double-cylinder high-pressure air pump with step-by-step gas pressurization according to claim 1, characterized in that: A load-bearing reinforcement component (5) for maintaining stable rotation of the crankshaft (11) is installed in the cover body (1).

7. A synchronous double-cylinder high-pressure air pump with step-by-step gas pressurization according to claim 6, characterized in that: The load-bearing enhancement component (5) comprises a sun gear (51) rotating on the cover body (1), three sets of planetary gears (52) meshingly assembled beside the sun gear (51), the three sets of planetary gears (52) meshingly assembled with an inner gear ring (53) outside, the inner gear ring (53) fixedly mounted in the cover body (1), a planet carrier (54) coaxially fixedly connected to the crankshaft (11), and the three sets of planetary gears (52) rotatably mounted on the planet carrier (54).

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