CN221742810U - Double-cylinder inflator pump - Google Patents

Abstract

The present application provides a double-cylinder air pump, which relates to the field of air pumps. The double-cylinder air pump includes a bracket, a cylinder, a fixed box, and a motor. The cylinder includes a first cylinder body, a second cylinder body, a first push rod, and a second push rod. The first push rod and the second push rod are respectively slidably arranged in the first cylinder body and the second cylinder body, and the first ends of the first push rod and the second push rod are connected to the piston; the first gear and the second gear are arranged on the same plane on the fixed box, and the first eccentric shaft and the second eccentric shaft are respectively arranged on the first gear and the second gear. The first eccentric shaft and the second eccentric shaft are respectively connected to the second ends of the first push rod and the second push rod; the motor is arranged perpendicular to the plane where the cylinder is located, and the driving end of the motor is provided with a motor gear, which is arranged on the same plane with the first gear and the second gear and meshed between the first gear and the second gear. The double-cylinder air pump can absorb gas twice and discharge gas twice at the same time when the piston reciprocates once, which greatly improves the work efficiency.

Description

Double cylinder air pump

Technical Field

The present application relates to the field of air pumps, and in particular to a double-cylinder air pump.

Background Art

An air pump is a device that converts mechanical energy into gas pressure energy. It is usually used in applications such as inflating automobile tires, inflating vertical cranes, and inflating balls. The air pump consists of a working cylinder, a piston, an intake valve, an exhaust valve, a connecting rod, a crankshaft, etc. The air is sucked into the working cylinder through the reciprocating motion of the piston, and then the air is pressurized and sent out through the compression piston.

Most of the existing air pumps are single-cylinder air pumps, which have a small air filling capacity, resulting in a long filling time and low working efficiency.

With respect to the above-mentioned related technologies, the inventor believes that the common air pumps on the market have a small inflation capacity.

Utility Model Content

In order to improve the problem of small inflation capacity of common air pumps on the market, the present application provides a dual-cylinder air pump.

The present application provides a dual-cylinder air pump adopts the following technical solution, and the dual-cylinder air pump includes:

Bracket;

A cylinder, the cylinder comprising a first cylinder body, a second cylinder body, a first piston, a second piston, a first push rod, and a second push rod, the first piston and the second piston are slidably disposed in the first cylinder body and the second cylinder body, respectively, the first ends of the first push rod and the second push rod are connected to the first piston and the second piston, respectively, and the ends of the first cylinder body and the second cylinder body facing away from the first push rod and the second push rod are both connected to the bracket;

A fixed box, wherein a first gear and a second gear are rotatably arranged on the fixed box, wherein the first gear and the second gear are respectively provided with a first eccentric shaft and a second eccentric shaft, wherein the first gear and the second gear are spaced and arranged in the same plane, and wherein the first eccentric shaft and the second eccentric shaft are respectively connected to the second ends of the first push rod and the second push rod;

A motor is arranged perpendicular to the plane where the cylinder is located, and a motor gear is arranged at the driving end of the motor. The motor gear is arranged in the same plane as the first gear and the second gear and is meshed between the first gear and the second gear.

By adopting the above technical solution, the motor drives the first gear and the second gear to rotate, the first eccentric shaft and the second eccentric shaft rotate with the first gear and the second gear respectively, the first eccentric shaft drives the first push rod and the first piston to slide in the first cylinder, and the second eccentric shaft drives the second push rod and the second piston to slide in the second cylinder. Within one motion cycle, that is, one reciprocating motion, two gas absorptions and two gas discharges can be performed, which greatly improves the working efficiency of the dual-cylinder air pump.

Optionally, the first piston and the second piston are respectively provided with a first air inlet valve and a second air inlet valve, and the first cylinder body and the second cylinder body are respectively provided with a first air outlet valve and a second air outlet valve at the end facing away from the fixed box, and the first air outlet valve and the second air outlet valve are both composed of an air-closing cover box and an air-closing spring.

By adopting the above technical solution, when the first piston and the second piston move toward the motor direction, the air pressure in the cylinder is lower than the external air pressure, the first intake valve and the second intake valve are opened, the first outlet valve and the second outlet valve are closed, and the gas enters the first cylinder body and the second cylinder body from the outside. When the first piston and the second piston move toward the bracket direction, the gas is compressed, the first intake valve and the second intake valve are closed, the first outlet valve and the second outlet valve are opened, and the gas is discharged.

Optionally, the bracket is provided with a limiting hole for placing the first air outlet valve and the second air outlet valve, and the limiting hole is provided with a rib for stabilizing the air-closing spring.

By adopting the above technical solution, the setting of the assembly groove allows the first air outlet valve and the second air outlet valve to be placed between the first cylinder body and the bracket, and the second cylinder body and the bracket respectively. The first air outlet valve and the second air outlet valve will not be offset, and the setting of the ribs limits the circumferential displacement of the air-closing spring.

Optionally, the cylinder includes an assembly shell, the assembly shell is arranged on a side of the cylinder close to the bracket, and the bracket is sleeved on the outside of the assembly shell.

By adopting the above technical solution, the setting of the assembly shell realizes the connection between the cylinder and the bracket, and the cylinder forms a closed air chamber with the bracket on the side away from the motor.

Optionally, a limiting groove is provided in the assembly shell, and a limiting strip is provided in the limiting groove.

By adopting the above technical solution, the setting of the limiting groove enables the first air outlet valve and the second air outlet valve to move linearly in the limiting groove, and the setting of the limiting strip is used to prevent the first air outlet valve and the second air outlet valve from deviating left and right.

Optionally, the fixed box is connected to one end of the first cylinder body and the second cylinder body away from the bracket, and the fixed box is connected to the motor.

By adopting the above technical solution, the fixed box is connected to the cylinder, and the motor is arranged on the fixed box.

Optionally, an air nozzle mounting shell is provided on a side of the bracket away from the motor, the air nozzle mounting shell is used to mount the air nozzle, and an air nozzle spring is provided between the air nozzle and the air nozzle mounting shell.

By adopting the above technical solution, the arrangement of the air nozzle mounting shell facilitates the installation of the air nozzle, and the air nozzle is used to be connected to the inflation port of the product to be inflated.

Optionally, a pressure sensor is installed on the side surface of the bracket close to the cylinder.

By adopting the above technical solution, the gas pressure at the outlet valve during the inflation process can be sensed in real time to ensure that the discharged gas pressure reaches a preset pressure value.

Optionally, the fixing box is provided with a first screw column at one end close to the cylinder, the bracket is provided with a second screw column at one end close to the cylinder, and the dual-cylinder air pump also includes a screw passing through the first screw column and the second screw column.

By adopting the above technical solution, the fixing box and the bracket are connected by screws, thereby improving the overall structural strength of the double-cylinder air pump.

Optionally, the bracket is provided with mounting handles on both sides of the outer surface away from the cylinder.

To sum up, the present application has the following beneficial effects: the motor drives the first gear and the second gear to rotate, the first eccentric shaft and the second eccentric shaft rotate with the first gear and the second gear respectively, the first eccentric shaft drives the first push rod and the first piston to slide in the first cylinder, and the second eccentric shaft drives the second push rod and the second piston to slide in the second cylinder. Within one motion cycle, that is, one reciprocating motion, two gas absorptions and two gas discharges can be performed, which greatly improves the working efficiency of the dual-cylinder air pump.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of the transmission structure of a double-cylinder air pump.

FIG. 2 is a schematic diagram of the structure of FIG. 1 after removing the motor, the fixing box, the first gear, and the second gear.

FIG. 3 is a cross-sectional view of FIG. 1 after removing the motor, the fixing box, the first gear, and the second gear.

FIG. 4 is a schematic structural diagram of the bracket in FIG. 1 .

FIG. 5 is a schematic structural diagram of the bracket in FIG. 4 from another viewing angle.

FIG. 6 is a schematic structural diagram of the cylinder in FIG. 1 .

FIG. 7 is a schematic structural diagram of the first push rod in FIG. 1 .

FIG8 is a schematic diagram of the assembly structure of the motor, motor gear, and fan in FIG1 .

Description of reference numerals: 10, double-cylinder air pump; 100, bracket; 110, bracket base; 120, assembly groove; 130, limiting hole; 131, rib; 140, air nozzle mounting shell; 141, air nozzle spring; 142, positioning groove; 143, arc block; 144, air nozzle; 150, sensing column; 151, first sensing hole; 152, second sensing hole; 153, pressure sensor; 160, mounting handle; 170, second screw column; 171, screw; 200, cylinder; 210, first cylinder body; 211, first push rod; 212, vertical axis; 213, air-sealing cover box; 214, first air outlet valve; 215, first piston; 220, second cylinder; 221, air-sealing spring; 222, second push rod; 223, second air outlet valve; 224, second piston; 230, assembly shell; 231, limiting groove; 232, limiting strip; 310, first gear; 311, first core shaft; 312, first eccentric shaft; 320, second gear; 321, second eccentric shaft; 400, motor; 410, motor gear; 420, fan.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back...), such directional indications are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

The embodiment of the present application discloses a dual-cylinder air pump 10 . Referring to FIGS. 1 and 2 , the dual-cylinder air pump 10 includes: a bracket 100 , a cylinder 200 , a fixing box (not shown in the figure), and a motor 400 .

The cylinder 200 includes a first cylinder body 210, a second cylinder body 220, a first piston 215, a second piston 224, a first push rod 211, and a second push rod 222. The first piston 215 and the second piston 224 are respectively slidably arranged in the first cylinder body 210 and the second cylinder body 220. The first ends of the first push rod 211 and the second push rod 222 are respectively connected to the first piston 215 and the second piston 224. The ends of the first cylinder body 210 and the second cylinder body 220 that are away from the first push rod 211 and the second push rod 222 are both connected to the bracket 100.

7, the first push rod 211 and the second push rod 222 have the same structure, and the first push rod 211 and the second push rod 222 include multiple hollowings on the vertical axis to reduce weight. The first piston 215 and the second piston 224 are respectively provided with a first intake valve (not shown in the figure) and a second intake valve (not shown in the figure). The first intake valve and the second intake valve are one-way valves. When the air pressure in the first cylinder 210 and the second cylinder 220 is less than the atmospheric pressure, the first intake valve and the second intake valve are opened, and external gas can enter the first cylinder 210 and the second cylinder 220 through the first intake valve and the second intake valve. When the air pressure in the first cylinder 210 and the second cylinder 220 is greater than the atmospheric pressure, the first intake valve and the second intake valve are closed.

1 , the fixed box includes a first spindle 311, a second spindle (not shown in the figure), a first gear 310, and a second gear 320. The first spindle 311 and the second spindle are spaced apart from each other. The first gear 310 is connected to the first spindle 311 via a bearing, and the second gear 320 is connected to the second spindle via a bearing. The first gear 310 and the second gear 320 are arranged on the same plane.

The first gear 310 and the second gear 320 are respectively provided with a first eccentric shaft 312 and a second eccentric shaft 321, and the first eccentric shaft 312 and the second eccentric shaft 321 are respectively connected to the second ends of the first push rod 211 and the second push rod 222. The first eccentric shaft 312 and the second eccentric shaft 321 can rotate with the first gear 310 and the second gear 320, respectively, thereby driving the first push rod 211 and the second push rod 222 to slide up and down respectively.

The motor 400 is arranged perpendicular to the plane where the cylinder 200 is located. A motor gear 410 is provided at a driving end on one side of the motor 400. The motor gear 410 is arranged on the same plane as the first gear 310 and the second gear 320 and meshes between the first gear 310 and the second gear 320.

3, the first cylinder 210 and the second cylinder 220 have an opening running through one side at one end near the fixed box, and the first cylinder 210 and the second cylinder 220 are respectively provided with a first gas outlet valve 214 and a second gas outlet valve 223 at the other end away from the fixed box. The first gas outlet valve 214 and the second gas outlet valve 223 are one-way valves, and the first gas outlet valve 214 and the second gas outlet valve 223 are both composed of a stepped air-closing cover box 213 and an air-closing spring 221. When the internal air pressure of the first cylinder 210 and the second cylinder 220 is greater than the air pressure at the outlet of the first gas outlet valve 214 and the second gas outlet valve 223, the first gas outlet valve 214 and the second gas outlet valve 223 are opened, and the compressed gas is discharged; when the internal air pressure of the first cylinder 210 and the second cylinder 220 is less than the air pressure at the outlet of the first gas outlet valve 214 and the second gas outlet valve 223, the first gas outlet valve 214 and the second gas outlet valve 223 are closed, and the gas will not leak.

6 , the cylinder 200 includes an assembly shell 230, which is connected to one end of the cylinder 200 close to the bracket 100, and the bracket 100 is sleeved on the outside of the assembly shell 230. The assembly shell 230 is similar in shape to the cylinder 200. The assembly shell 230 is provided with a limiting groove 231 at the first cylinder body 210 and the second cylinder body 220 where the first gas outlet valve 214 and the second gas outlet valve 223 are placed, and a limiting strip 232 is provided in the limiting groove 231. The setting of the limiting groove 231 allows the first gas outlet valve 214 and the second gas outlet valve 223 to move only in the limiting groove 231, and the setting of the limiting strip 232 is used to prevent the first gas outlet valve 214 and the second gas outlet valve 223 from deviating left and right.

4 , the bracket 100 includes a bracket base 110 and an assembly groove 120. The shape of the assembly groove 120 is similar to that of the assembly shell 230. Two limiting holes 130 are also provided inside the bracket 100. The limiting holes 130 protrude from the wall on one side of the bracket 100 to form a limiting column. The limiting holes 130 are used to place the first gas outlet valve 214 and the second gas outlet valve 223. The limiting holes 130 are provided with ribs 131 to stabilize the gas closing spring 221. The setting of the two limiting holes 130 allows the first gas outlet valve 214 and the second gas outlet valve 223 to move only within the limiting holes 130, and the circumferential displacement of the first gas outlet valve 214 and the second gas outlet valve 223 close to the bracket 100 is limited.

5 , a gas nozzle mounting shell 140 is provided on the side of the bracket 100 away from the motor 400. The gas nozzle mounting shell 140 protrudes from the limiting column. The gas nozzle mounting shell 140 is used to mount a gas nozzle 144. A gas nozzle spring 141 is provided between the gas nozzle 144 and the gas nozzle mounting shell 140. The gas nozzle mounting shell 140 is provided with a clamping groove 142 and an arc block 143, so that the gas nozzle 144 will not fall off after installation.

2 and 5 , the bracket 100 is provided with a sensing column 150 on the side surface close to the cylinder 200, and a first sensing hole 151 is provided in the sensing column 150. The bracket 100 is provided with a second sensing hole 152 inside the air nozzle mounting shell 140 close to the air nozzle. The first sensing hole 151 is spirally reduced on the surface of the sensing column 150 to be the same diameter as the second sensing hole 152. The second sensing hole 152 is in communication with the air flow at the first air outlet valve 214 and the second air outlet valve 223. The sensing column 150 is provided with a pressure sensor 153 at the first sensing hole 151. The pressure sensor 153 is used to detect the gas pressure at the first air outlet valve 214 and the second air outlet valve 223 to ensure that the exhaust pressure of the dual-cylinder air pump 10 reaches a preset value.

5 , the bracket 100 is provided with mounting handles 160 on the side surfaces of the two limiting columns. The mounting handles 160 are designed to facilitate installation and removal of the bracket 100. The mounting handles 160 are designed on the side surfaces of the limiting columns, and are compact, practical and beautiful.

The fixed box is sleeved on the outside of the first cylinder body 210 and the second cylinder body 220 away from the bracket 100. A motor mounting block is provided on the fixed box. The motor mounting block is arranged in the middle of the fixed box. A motor 400 is arranged on the motor mounting block.

Referring to Figure 2, the fixing box is provided with a first screw column at one end close to the cylinder 200, and the bracket 100 is provided with a second screw column 170 at one end close to the cylinder 200. The dual-cylinder air pump 10 also includes a screw 171, which passes through the first screw column and the second screw column 170 to fix the fixing box and the bracket 100.

8 , the dual-cylinder air pump 10 will emit a large amount of heat during use. In order to reduce the temperature of the motor 400 and increase the service life of the dual-cylinder air pump 10 , a fan 420 is provided on the driving end on the other side of the motor 400 .

The implementation principle of a dual-cylinder air pump 10 in an embodiment of the present application is as follows: when it is necessary to inflate an external product, the motor 400 is started, the motor gear 410 drives the first gear 310 and the second gear 320 to rotate, the first gear 310 drives the first eccentric shaft 312 to rotate, the first eccentric shaft 312 drives the first push rod 211 to move toward the motor 400, at this time, the air intake valve on the first piston 215 is opened, the first air outlet valve 214 is closed, and the dual-cylinder air pump 10 realizes air intake; the second gear 320 drives the second eccentric shaft 321 to rotate, the second eccentric shaft 321 drives the second push rod 222 to move toward the bracket 100, and the air is compressed. At this time, the second air intake valve is closed, the second air outlet valve 223 is opened, and the air is input into the external product through the air nozzle 144.

After the first push rod 211 reaches the top of the first cylinder 210, the first push rod 211 moves toward the direction of the bracket 100. At this time, the first air inlet valve is closed, the first air outlet valve 214 is opened, and the first cylinder outputs compressed air to the outside. After the second push rod 222 reaches the bottom of the second cylinder 220, the second push rod 222 moves toward the direction of the motor 400. At this time, the second air inlet valve is opened, the second air outlet valve 223 is closed, and the second cylinder 220 inhales air.

The motor 400 drives the first gear 310 and the second gear 320 to rotate, and the first eccentric shaft 312 and the second eccentric shaft 321 rotate with the first gear 310 and the second gear 320 respectively. The first eccentric shaft 312 drives the first push rod 211 and the first piston 215 to slide in the first cylinder body 210, and the second eccentric shaft 321 drives the second push rod 222 and the second piston 224 to slide in the second cylinder body 220. Within one motion cycle, that is, one reciprocating motion, two gas absorptions and two gas discharges can be performed, which greatly improves the working efficiency of the dual-cylinder air pump 10.

The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. A dual cylinder inflator (10), the dual cylinder inflator (10) comprising:

a bracket (100);

The cylinder (200), the cylinder (200) includes first cylinder body (210), second cylinder body (220), first piston, second piston, first push rod (211), second push rod (222), first piston the second piston is slided respectively and is located in first cylinder body (210), second cylinder body (220), first push rod (211), the first end of second push rod (222) respectively with first piston, the second piston is connected, first cylinder body (210), second cylinder body (220) deviate from first push rod (211), the one end of second push rod (222) all with support (100) is connected;

The fixed box is rotatably provided with a first gear (310) and a second gear (320), the first gear (310) and the second gear (320) are respectively provided with a first eccentric shaft (312) and a second eccentric shaft (321), the first gear (310) and the second gear (320) are distributed on the same plane at intervals, and the first eccentric shaft (312) and the second eccentric shaft (321) are respectively connected with the second ends of the first push rod (211) and the second push rod (222);

The motor (400), motor (400) perpendicular to cylinder (200) place plane setting, the drive end of motor (400) is equipped with motor gear (410), motor gear (410) with first gear (310) second gear (320) are same-layer plane setting and meshing in between first gear (310) second gear (320).

2. The dual cylinder inflator (10) of claim 1, wherein: the first piston and the second piston are respectively provided with a first air inlet valve and a second air inlet valve, a first cylinder body (210) and a second cylinder body (220) are respectively provided with a first air outlet valve (214) and a second air outlet valve (223) at one ends deviating from the fixed box, and the first air outlet valve (214) and the second air outlet valve (223) are respectively composed of a closed air cover box (213) and a closed air spring (221).

3. The dual cylinder inflator (10) of claim 2, wherein: the support (100) is provided with a limiting hole (130) for placing the first air outlet valve (214) and the second air outlet valve (223), and ribs (131) are arranged in the limiting hole (130) for stabilizing the air-tight spring (221).

4. The dual cylinder inflator (10) of claim 1, wherein: the cylinder (200) comprises an assembly shell (230), the assembly shell (230) is arranged on one side, close to the bracket (100), of the cylinder (200), and the bracket (100) is sleeved outside the assembly shell (230).

5. The dual cylinder inflator (10) of claim 4, wherein: a limiting groove (231) is formed in the assembly shell (230), and a limiting strip (232) is arranged in the limiting groove (231).

6. The dual cylinder inflator (10) of claim 1, wherein: the fixed box is connected with one end of the first cylinder body (210) and one end of the second cylinder body (220) far away from the bracket (100), and the fixed box is connected with the motor (400).

7. The dual cylinder inflator (10) of claim 1, wherein: one side of the bracket (100) away from the motor (400) is provided with an air tap mounting shell (140), the air tap mounting shell (140) is used for mounting an air tap (144), and an air tap spring (141) is arranged between the air tap (144) and the air tap mounting shell (140).

8. The dual cylinder inflator (10) of claim 1, wherein: the bracket (100) is provided with a pressure sensor (153) on a side surface close to the cylinder (200).

9. The dual cylinder inflator (10) of claim 1, wherein: the fixed box is provided with a first screw column at one end close to the air cylinder (200), a second screw column (170) is arranged at one end close to the air cylinder (200) on the support (100), the double-air-cylinder inflator (10) further comprises a screw (171), and the screw (171) penetrates through the first screw column and the second screw column (170).

10. The dual cylinder inflator (10) of claim 1, wherein: the bracket (100) is provided with mounting handles (160) on two sides of the outer surface far away from the cylinder (200).