Bothway air inflation hand-pulling air cylinder

Abstract

The invention relates to a bothway air inflation hand-pulling air cylinder. The bothway air inflation hand-pulling air cylinder comprises a cylinder body and a piston. The piston divides the inside of a cylinder main body into an upper air chamber and a lower air chamber. The cylinder body comprises the cylinder main body, an upper cover and a base. A linkage pipe penetrates through the center of the upper cover. The bothway air inflation hand-pulling air cylinder is characterized in that the air cylinder further comprises an upper air outlet channel, a lower air outlet channel, a connecting pipe and an air guide chamber; an upper air outlet valve plate is arranged in the upper air outlet channel, a lower air outlet valve plate is arranged in the lower air outlet channel, the connecting pipe is arranged outside the cylinder main body, and the upper end and the lower end of the connecting pipe are connected and communicated with the upper air outlet channel and the lower air outlet channel respectively; the air guide chamber is arranged inside the piston, the upper surface of the piston is provided with an upper valve port and an upper breather valve plate, and the lower surface of the piston is provided with a lower valve port and a lower breather valve plate. Due to the fact that the upper air outlet channel is formed in the cylinder body, the trouble brought to customers due to the fact that the connecting pipe moves up and down along with a handle in the air inflating process is saved; in the air inflating process, the entire linkage pipe is filled with air during air inflation or air suction, the air amount is greatly increased compared with a traditional two-way inflation air cylinder, and thus the air inflation efficiency of the air cylinder is also greatly improved.

Description

technical field [0001] The invention relates to a manual inflatable device, in particular to a two-way inflatable hand-pulled air cylinder that allows users to operate by hand and can continue to inflate or pump air when pushing or pulling the handle. Background technique [0002] At present, there are quite a lot of types of hand pumps (also called air pumps). The traditional pump includes a cylindrical body, and a piston operated by a connecting rod is assembled in the body. A grip for the user to hold is provided at the top of the connecting rod, and an inflatable tube extends from the lower end of the main body. When the user pulls up the handle, air will enter under the piston inside the body, and when the user presses down the handle, the piston will push the air in the body into the inflatable tube to provide an inflation. This kind of traditional hand-held air cylinder is a one-way hand-held air cylinder, that is, when the piston moves up and down in a round-trip st...

AI Technical Summary

Problems solved by technology

[0006] 1. Both the air inlet and the air outlet are set on the handle, so the connecting air pipe connected to the device to be inflated is connected with the handle, and it will move up and down with the handle during the inflation process, and the connecting air pipe may be in contact with the handle during the up and down movement. Or wait until the inflatable device is detached, and the follow-up of the connected trachea will also cause troubles for inflating

[0007] 2. There is also a central inner tube in the linkage tube connected to the piston. When the air is released, the air in the air outlet air guide chamber in the piston is passed through the space between the inner peripheral surface of the linkage tube and the outer peripheral surface of the inner tube, and finally from the air outlet of the handle. If it is sent out, the air flow is relatively small, and the inflation efficiency is low.

[0008] 3. The internal structure of the piston is complex. The piston has an air intake chamber and an air outlet chamber inside the piston, and multiple one-way valve ports are set on the upper and lower surfaces of the piston, which is inconvenient for the forming of the piston.

[0009] 4. The pressure gauge is set on the handle, so the pressure gauge will move up and down with the handle, which is not easy to observe and affects the accuracy of the pressure gauge

[0010] 5. The handle is movable. During the process of packaging or taking the handle, the handle will drive the piston to move relative to the cylinder body, which is inconvenient for packaging and transporting the gas cylinder. The process of taking it will also be inconvenient due to the movement of the handle. fragile

[0011] 6. The handles of the handle are all set horizontally, so that when pulling the handle, the angle of the arm opening is relatively large, and the pulling is laborious

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