CN103967746B - A kind of portable tire pump - Google Patents

Abstract

<b>The invention discloses a portable air pump, which includes a cylinder body with an air flow channel, and the cylinder body is provided with a first one-way valve and a second one-way valve for separating the air flow channel into a first air chamber and a second air chamber. One-way valve, the external air is set in one-way communication with the first air cavity through the first one-way valve, and the first air cavity is set in one-way communication with the second air cavity through the second one-way valve. The air enters the air compression mechanism in the first air chamber through the first one-way valve, and the air compression mechanism is manually driven to work, so that the external air can enter the second air chamber through the first air chamber after being compressed, and then be charged through the outlet pipeline. into the device to be inflated. The air pump has a simple structure, a small volume, and is convenient to carry and use. </b>

Description

A portable pump

technical field

The invention relates to an air pump, in particular to a portable air pump.

Background technique

Inflators, also known as air pumps, are used to inject or replenish the air required by various tires and some balls. At present, most of the air pumps on the market are nothing more than setting a piston in a cylinder to push the compressed air, pulling it manually, and filling the tire or the ball with air through the air nozzle. This type of air pump is inconvenient to carry because of its long barrel.

Contents of the invention

The object of the present invention is to provide a portable pump with simple structure, convenient operation and portability.

In order to achieve the above object, the technical solution adopted by the present invention is: a portable air pump, the pump includes a cylinder body with an air flow channel, and the cylinder body is provided with an The first one-way valve and the second one-way valve of the second air chamber, the external air is connected to the first air chamber through the first one-way valve, and the first air chamber is connected to the first air chamber through the second one-way valve. The one-way valve is set in one-way communication with the second air cavity, and the cylinder body is also provided with an air compression mechanism that allows external air to enter the first air cavity through the first one-way valve. The air compression mechanism includes a piston cavity communicated with the first air cavity on the cylinder body, a piston movably disposed in the piston cavity, and a device for providing elastic restoring force of the piston along the moving direction. spring, the air compression mechanism also includes an operating part for driving the piston to move in the piston chamber, one end of the operating part is rotatably connected to the barrel and the operating part is pressed against the piston Above, the cylinder body is also provided with an air outlet pipeline for communicating with the second air chamber.

Preferably, the barrel is further provided with a relief valve for limiting the pressure in the second air cavity.

Preferably, the cylinder is arranged in an L shape, the cylinder has a vertical portion and a horizontal portion, the piston is arranged on the vertical portion, and one end of the operating member is rotatably connected to the horizontal portion and the operating member is pressed against the piston.

As a specific implementation manner, the operating member is an operating handle.

Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: the portable air pump of the present invention can drive the air compression mechanism by pressing the operating part, so that the external air enters the second air cavity through the first air chamber after being compressed. The air cavity is then filled into the device to be inflated through the air outlet pipeline. The air pump has a simple structure, a small volume, and is convenient to carry and use.

Description of drawings

Accompanying drawing 1 is the structural representation of the portable pump of embodiment 1 of the present invention;

Accompanying drawing 2 is the structural representation of the portable pump of embodiment 2 of the present invention;

Among them: 1. cylinder body; 11. first one-way valve; 12. first air chamber; 13. second one-way valve; 14. second air chamber; 15. overflow valve; 2. air compression mechanism; 21 , piston; 22, spring; 23, operating handle.

detailed description

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Example 1

Referring to the portable air pump shown in Figure 1, it includes a cylinder body 1 with an air flow passage, and the cylinder body 1 is provided with a first check valve 11, a first air chamber 12 and a second air chamber 14 separating the air flow passage. Two one-way valves 13 and overflow valves 15, external air is provided with one-way communication to the first air chamber 12 through the first one-way valve 11, and the first air chamber 12 is unidirectionally connected to the second air chamber 14 by the second one-way valve 13 The overflow valve 15 is used to overflow and release the pressure when the air pressure in the second air chamber 14 exceeds a certain value.

Referring to Fig. 1, the cylinder body 1 is also provided with an air compression mechanism 2 capable of allowing external air to enter the first air chamber 12 through the first check valve 11. The air compression mechanism 2 includes a The piston chamber connected to the first air chamber 12 on the body 1, the piston 21 movably arranged in the piston chamber, and the spring 22 used to provide the elastic restoring force of the piston 21 along the moving direction, the air compression mechanism 2 also includes An operating member 23 for driving the piston 21 to move in the piston cavity, one end of the operating member 23 is rotatably connected to the barrel 1 , and the other end is pressed against the outer end of the piston 21 .

Referring to Fig. 1, the operating part in this embodiment is the operating handle 23, which is driven to rotate by holding the operating handle 23 when inflating, and the operating handle 23 presses the piston 21 so that the piston 21 overcomes the elastic force of the spring 22 and moves in the piston cavity, thereby The outside air is blown into the first air chamber 12 , the pressure in the first air chamber 12 increases continuously, and the gas in the first air chamber 12 enters the second air chamber 14 through the second one-way valve 13 .

Referring to Fig. 1, the cylinder body 1 is also provided with an air outlet pipeline for communicating with the second air chamber 14. When pumping air, an air nozzle is inserted in the air outlet pipeline, and the cylinder body 1 can be discharged through the air nozzle. The compressed gas is filled into the tire or ball to be inflated.

Example 2

Referring to the portable pump shown in FIG. 2 , the difference between it and Embodiment 1 mainly lies in the shape of the cylinder body 1 . In this embodiment, the cylinder 1 is arranged in an L shape, the cylinder 1 has a vertical part and a horizontal part, the piston 21 is arranged on the vertical part, and one end of the operating handle 23 is rotatably connected to the horizontal part, such that The setting is more beautiful and convenient for the operator to hold.

To sum up, in the portable pump of the present invention, the pumping operation can be completed by pressing the operating handle 23, and the pump is simple in structure, easy to use and easy to carry.

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present invention, and the purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and not to limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention shall fall within the protection scope of the present invention.

Claims (4)

1. a portable tire pump, it is characterized in that: described pump comprises the cylindrical shell with air-flow path, described cylindrical shell is provided with the first one-way valve described air-flow path being separated into the first air cavity and the second air cavity, second one-way valve, outside air is arranged to described first air cavity unilaterally connected by described first one-way valve, described first air cavity is arranged to described second air cavity unilaterally connected by described second one-way valve, described cylindrical shell is also provided with outside air can be made to enter the air compressing mechanism in described first air cavity by described first one-way valve, described air compressing mechanism comprises the piston cavity be located at and described cylindrical shell is connected with described first air cavity, be located at the piston in described piston cavity movably, for providing described piston along the spring of movement direction elastic-restoring force, described air compressing mechanism also comprises the operation piece for driving the movement in described piston cavity of described piston, one end of described operation piece to be connected to rotationally on described cylindrical shell and described operation piece by being pressed on described piston, described cylindrical shell is also provided with the outlet pipe for being connected with described second air cavity.

2. a kind of portable tire pump according to claim 1, is characterized in that: described cylindrical shell is also provided with the relief valve for limiting described second air cavity internal pressure.

3. a kind of portable tire pump according to claim 1, it is characterized in that: the L-shaped setting of described cylindrical shell, described cylindrical shell has vertical portion and horizontal part, described piston is located on described vertical portion, one end of described operation piece is connected on described horizontal part rotationally, and described operation piece is pressed on described piston.

4. a kind of portable tire pump according to claim 1 or 3, is characterized in that: described operation piece is operating handle.