Pneumatic tool capable of switching-over on-off by single hand

Abstract

The present invention relates to a pneumatic tool whose switch can be changed over by single hand. Said pneumatic tool includes a self-body, a cover body and a control component. The described self-body has a control channel, said control channel has an air inlet and an air outlet; the described cover body is used for covering one end of self-body; the described control component is placed in the control channel of self-body, said control component can be operated by single hand of operator, and can be moved between first position and second position. Besides, said invention also provides the working principle of said pneumatic tool and its concrete operation method.

Description

technical field [0001] The invention relates to a pneumatic tool, in particular to a pneumatic tool which can provide high stability, is easy to operate, and has a simple structure and can switch switches with one hand. Background technique [0002] Please refer to my country Taiwan Patent Publication No. 387316 for a patent case of a one-handed control forward and reverse mechanism for a portable pneumatic tool. The portable pneumatic tool 1 is elastically provided with a lower control lever 2 and an upper control lever 3 in front of the handle 11, respectively. The lower control rod 2 is used to conduct high-pressure gas, and the upper control rod 3 is used to switch the positive and negative rotation of the pneumatic cylinder 10. The middle finger, ring finger and little finger held on the handle 11 are pressed on the On the lower control rod 2, the pneumatic cylinder 10 is driven to rotate by the conduction gas, while the index finger hangs in front of the upper control ...

AI Technical Summary

Problems solved by technology

[0007] Such a design of the existing structure still has its disadvantages. When the user switches the transmission shaft 12 to rotate forward, the middle finger needs to be separated from the lower end of the trigger 30 to form a suspended state, and then the index finger can be pressed against the upper end of the trigger 30 to resist the push. The long and short control pins 25, 25' drive the drive shaft 12 to rotate forward, which will easily cause fatigue to the user's hand

If the drive shaft 12 is to be reversed, the index finger needs to leave the upper end of the trigger 30 to form a suspended shape, which will easily cause fatigue of the user's hand, affect the construction progress or cause the user's work injury.

[0008] And only three fingers are held on the handle 15 during construction, the force of holding is insufficient, and the gun-shaped body 10 cannot be provided with a better stability

[0009] Furthermore, if the force is improperly applied, the index finger (or middle finger) is easy to hold and press the handle 15 together with the other three fingers, and accidentally touches the trigger 30, causing the transmission shaft 12 to reverse suddenly, which will likely cause construction problems. danger or injury

[0010] In addition, the structure for controlling the positive and negative rotation of the transmission shaft 12 requires multiple long and short control pins 25, 25', which are installed in the airflow control block 20, and the components are complicated and unsuitable for industrial use.

And its airflow control block 20 needs to be provided with ten holes in total, quite time-consuming, and difficult to repair when malfunctioning, very impractical

When in use, the airflow control block 20 only utilizes one of the air intake holes 21 and the exhaust control holes 22, and the other group is idle. Such a structural design does not meet the cost, so there is a need for improvement.

Images