Locking type torque wrench with prompt

Abstract

The invention provides a locking type torque wrench with a prompt. The wrench comprises a main rod body, a holding handle, a plurality of rollers, a rotating ring and an abutting piece, wherein pin rollers are arranged in the plurality of rollers, the main rod body is connected into the holding handle and can rotate relative to the holding handle to stretch and retract so as to adjust the workingtorsion of the a driving head, the rotating ring sleeves the plurality of rollers on a holding handle extension tube, the rotating ring can rotate relative to the extension tube to a locked position and a released position, the abutting piece is provided with a connecting part and is located on the two sides of the extension tube, the abutting piece is buckled one ends of the pin rollers in a normal state, when the pin rollers are in a raised shape, the pin rollers is pressed to the main rod body by a pre-force generated by a jacking pressing part, and the pin rollers sink instantly by subjecting a pre-pressing downward pressing when encounter limiting grooves to form a paragraph feeling when the holding handle and the main rod body rotate relatively.

Description

technical field [0001] The invention relates to a torque wrench, in particular to a locking type torque wrench with hints. Background technique [0002] As shown in China Taiwan Patent No. M515937, it discloses a locking ring structure of a torque wrench. Set a locking ring. The locking ring has an inner locking ring and an outer locking ring. The inner locking ring has an escape groove corresponding to each positioning piece, and the inner locking ring has a limiting groove corresponding to the limiting piece. There are two limiting blocks in the limiting groove. And when the locking ring rotates relative to the main body, the limiting member can be selectively engaged with any limiting block. In addition, the outer circumference of the inner locking ring is protrudingly provided with several fastening blocks and the several fastening grooves on the inner circumference of the outer locking ring are mutually fastened. Therefore, the user can rotate the locking ring in the...

AI Technical Summary

Problems solved by technology

However, although the above-mentioned scale marks are used as the basis for torque adjustment, when the marked scale is only confirmed visually, the actual torque value may have a significant error from the visually recognized torque value, resulting in confusion when adjusting the torque. The problem of inaccuracy, especially when the aforementioned scale marks become blurred due to wear, the inaccuracy of the user's adjustment torque value is even more serious

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