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Abstract

The invention is a swing head wrench, including a driving head and a pivot set on the handle of the driving head, one end of the driving head drives screw pieces and the other end is set with a convex pivot part and one end of the handle opposite to the pivot part is set with a concave clip part, and a bolt passes through the pivot part and the clip part, a clip-pull mechanism set in the handle, the outer edge of the pivot part includes two first sections and a the second section set between the two first sections, the second section is set with teeth, and the arc surfaces of the two fist sections are higher than the tooth roots of the second section. It can effectively lift the torsional value undertaken, and its driving head can generate relative pivot swing at a small angle, making it able to be universally used in the operation in narrow space.

Description

【Technical field】

[0001] The invention relates to a wrench, in particular to an oscillating head wrench. 【Background technique】

[0002] Since human beings have civilization, hand tools have occupied a place, and since the invention of screws, wrenches have occupied the most important position in the field of hand tools, and are common in daily life, furniture, or machinery used in industry and commerce. , working tools, almost all use the cooperation of bolts and nuts or screw holes to achieve the purpose of fixing or locking. Indispensable hand tools, especially after the concept of DIY prevails, many consumers have their own tool sets with different usage characteristics for bolts and nuts of different shapes and sizes.

[0003] refer to figure 1 and figure 2 , a conventional swing head wrench, one end of the head 1 is provided with a ratchet ring and a two-way ratchet mechanism (not shown) for screw accommodation. The center of the outer edge of the pivoting section...

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