Pneumatic spanner structure

摘要

A pneumatic spanner structure includes a head body, a link bevel gear unit, a hit unit and a driving handle. A driving motor axle portion at an open end of the driving handle drives a motor link bevel gear post and a hit unit link bevel gear plate of the link bevel gear unit. The hit unit link bevel gear plate links the hit unit. The link bevel gear unit enhances and transmits the force to the hit unit. The hit unit applies the acting force on a workpiece. The hit unit doesn't need a buffer space for actuation and the force is indirect. The link bevel gear unit is a deceleration device to extend the service life of the whole structure. The output force is more powerful than the prior art, providing a stable and compact structure.

主权项

1. A pneumatic spanner structure, comprising:
a head body, the head body comprising an accommodation head seat portion, a hollow neck portion and an accommodation connection seat portion, the accommodation head seat portion, the hollow neck portion and the accommodation connection seat portion communicating with each other, the accommodation head seat portion being covered with a lid; a link bevel gear unit, the link bevel gear unit comprising a motor link bevel gear post and a hit unit link bevel gear plate, the motor link bevel gear post having a mesh gear portion and an axle portion, the axle portion having a connection positioning hole therein, the hit unit link bevel gear plate comprising a mesh bevel gear at one side thereof, the mesh bevel gear having a second positioning trough at an inner side thereof, the hit unit link bevel gear plate comprising a guide post at another side thereof, the second positioning trough having an engaging hole, the mesh bevel gear of the motor link bevel gear post meshing with the mesh bevel gear of the hit unit link bevel gear plate, the guide post being positioned in the first positioning trough of the accommodation head seat portion of the head body; a hit unit, the hit unit comprising a link axle portion and a head portion, the link axle portion being engaged in the engaging hole of the second positioning trough of the hit unit link bevel gear plate, the head portion extending out of the lid of the accommodation head seat portion of the head body; and a driving handle, the driving handle comprising a control press portion and an air guide pipe connection portion, the driving handle having an open end provided with a driving motor axle portion, the driving motor axle portion being connected to the connection positioning hole of the axle portion of the motor link bevel gear post; the accommodation head seat portion has a first positioning trough therein, a second rotation ring is fitted on the guide post of the hit unit link bevel gear plate of the link bevel gear unit, and the guide post with the second rotation ring is positioned in the first positioning trough of the accommodation head seat portion of the head body; and an axle sleeve is fitted on a central section of the axle portion of the motor link bevel gear post of the link bevel gear unit, and a pair of first rotation ring is fitted on the axle portion and respectively located at two ends of the axle sleeve.