Pneumatic turnover device and object storage cabinet with pneumatic turnover device

Abstract

The invention discloses a pneumatic turnover device. The pneumatic turnover device comprises a long arm, a short arm and an air cylinder; the air cylinder comprises an air cylinder sleeve, a piston, a piston rod, a sealing ring, a guide sleeve, a spring, lubricating oil and nitrogen, the guide sleeve is inserted into a sleeve opening of the air cylinder sleeve in an airtight mode, the lubricating oil and the nitrogen are contained in the air cylinder sleeve, the end, opposite to the end with the sleeve opening, of the air cylinder sleeve is hinged to the first hinge end, and the piston rod is connected to the guide sleeve in an airtight penetrating mode; the piston is fixed to one end of the piston rod and is located in the air cylinder sleeve, one end of the spring is fixedly connected to the inner side end of the guide sleeve, the other end of the spring extends to the interior of the air cylinder sleeve in the axial direction of the piston rod, an annular groove is formed in the peripheral wall of the piston, the piston is divided by the annular groove so as to form a first annual plug far away from the guide sleeve and a second annual plug close to the guide sleeve, and the first annular plug is in clearance fit with the air cylinder sleeve. By means of the pneumatic turnover device, after the piston rod is stressed, the piston stably slides in the piston sleeve, a rotating plate is driven to be stably opened and closed and can be stopped at any position in the middle, and the pneumatic turnover device is convenient to use.

Description

technical field [0001] The invention relates to a pneumatic overturning device and a locker using the device. Background technique [0002] The existing pneumatic overturning device used on the locker is a device for turning over the table top and switching the table top between closed and open states. The overturning device generally uses an ordinary cylinder, or a snap-in hinge or a gas spring or a damper, etc. Due to the unbalanced force on the cylinder piston, it can only achieve unstable opening or closing of the table, and when opening or closing the table During the process, it cannot be stopped at any position, which brings certain inconvenience. The damper is easy to break, and it cannot stop in the middle, and the service life is short, and the use effect is poor. [0003] In addition, when the table top is flipped to fast closing, because the air pressure in the cylinder increases exponentially, and the gravity provided by the table itself will be mostly transfer...

AI Technical Summary

Problems solved by technology

The overturning device generally uses an ordinary cylinder, or a snap-in hinge or a gas spring or a damper, etc. Due to the unbalanced force on the cylinder piston, it can only achieve unstable opening or closing of the table, and when opening or closing the table During the process, it cannot be stopped at any position, which will bring some inconvenience. The damper is easy to break, and it cannot stop in the middle, and the service life is short, and the use effect is poor.

[0003] In addition, when the table top is flipped to fast closing, because the air pressure in the cylinder increases exponentially, and the gravity provided by the table itself will be mostly transferred to the thrust of the cylinder liner, the closing force of the table is strong and fast, and it is easy to pinch hands and cause damage. There is a sound; when the table is opened, when it is close to the opening limit (90° from the state of the closed table), since most of the self-weight of the table is supported by the rotating shaft, and the air pressure that provides the reaction force in the cylinder decreases exponentially, so At this time, it will also happen that the opening force is too large and the speed is too fast, and the collision will easily cause damage to other components.

[0004] At present, in order to realize the flipping of the table, there is also a way to realize the stable opening and closing of the table through the motor, but the configured motor will bring a complicated structure, and it is easy to leak electricity, which is not safe

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