Ratchet batch

Abstract

The invention discloses a ratchet batch, aiming at providing a ratchet batch, in which a loosening screw can be normally used even without a positive and negative adjusting button and the screw can be randomly unloaded tightly positively and negatively by a single hand with a small screwing angle. The ratchet batch has advantages of large torsion force, small size, simple structure and easy processing and manufacturing. The ratchet batch comprises a rod, gearwheels, annular gears and a spring. The working principle of the ratchet batch is that: the method is applied in the ratchet batch that the gearwheels and the annular gears, both of which have the same number of teeth, are adopted to mesh each tooth of the two gearwheels and the meshed teeth of the two gearwheels are separated axially; with this method, the work performance of the ratchet batch is improved. The invention is applicable for fast unloading tightly the screws on various machineries, electronic equipment and apparatuses.

Description

technical field

[0001] The invention relates to a manual tool for tightening and unloading screws, in particular to a ratchet set with large torque and fast operation. Background technique

[0002] At present, the known ratchet batch structure is made up of batch bar, small ratchet, ratchet plate, reversing button, handle etc. Because the ratchet is small, the pawl sheet is thin. Therefore, when the force is slightly larger, the teeth often jump, and even the ratchet teeth and pawls are damaged to affect the work. A kind of ratchet screwdriver (00259415.3) etc. as Chinese patent ratchet screwdriver (200520015369.6). As for the forward and reverse reversing, manual adjustment is required, and the ratchet cannot be achieved by loosening the screws, and the minimum turning angle is large. And defects such as many parts, complex mechanism and high cost have also set obstacles for the wide application of ratchet batches. Contents of the invention

[0003] In order to solve ...

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