Spanner with easily identified marks

Abstract

The invention relates to a spanner with easily identified marks, comprising a head part and a body part. The body part forms a handle; the head part forms a driving part comprising a movable jaw and a stationary jaw; the head part is provided with a measuring part on at least one side of the driving part; the measuring part is provided with a plurality of scales; and the scales are not parallel to the axis of the spanner. During working, the clamping distance between the movable jaw and the stationary jaw can be indentified more clearly by the measuring part arranged in a non-parallel way.

Description

technical field [0001] The invention relates to a hand tool, in particular to a wrench with easy-to-read marks on a measuring portion arranged non-parallel to the axis of the wrench. Background technique [0002] The movable wrench meshes the worm wheel on the worm with the row of teeth on the movable jaw. By turning the worm gear, the row of teeth is screwed in or out, thereby achieving the function of adjusting the clamping distance between the movable jaw and the fixed jaw. The movable wrench uses its The adjustability of the jaw makes it easy to turn screws of different sizes with an adjustable wrench. [0003] Screws of different sizes are used to lock objects with openings of different diameters, and because the size differences of some screws are not obvious, it is difficult to clearly identify them with the naked eye, or it is necessary to record or calculate the size and size of the screws during the operation. Diameter length, when the screw itself does not show t...

AI Technical Summary

Problems solved by technology

[0005] However, since the scale is arranged on the side wall of the head in parallel with the axis of the adjustable wrench (that is, perpendicular to the edge of the jaw), and the numerals representing each scale are printed below the scale, each When adjusting the distance between the movable jaw and the fixed jaw to the position where the screw can be clamped, it is necessary to turn the handle end of the adjustable wrench to the front of the user, so that the scale and the number symbols representing the scale are just in sight Only in front of the clamping distance can the data of the distance and the diameter length or size of the screw be clearly read when the clamping distance is adjusted. This is derived from the setting method of the scale. Although the steps of "reading the scale with sharpness" can be naturalized by habit, and have not yet constituted a particularly significant inconvenience, but when it comes to the inertia and convenience of operating an adjustable wrench, there are major shortcomings hidden

[0006] Generally, the better operation method is to hold the adjustable wrench with one hand, so that the adjustable wrench intersects with the arm at an angle, so as to use the overall arm strength to operate the adjustable wrench, and because the arm can stretch naturally to form a longer force Therefore, the operation conforms to the inertia of the arm movement and saves effort, but now the handle of the adjustable wrench is facing the front of the body. When the handle is held by the hand, the arm and the adjustable wrench are in the same parallel line. The handle end is close to the body, so the arm can be held without straightening, and the moment arm is relatively shortened, so the movement of the adjustable wrench does not conform to the inertia of the arm movement and is very laborious. Of course, if there is no obstacle around the force application point At this time, you can also turn to a position that is conducive to applying force to overcome this shortcoming, but if it happens to be blocked by an obstacle, you will not be able to do what you want.

[0007] It can be seen that the scale is set parallel to the axis of the adjustable wrench, not only can the adjustable wrench be turned to the front of the body before reading, so that the scale and representative numbers are just in front of the line of sight, but also prevents the operation of the adjustable wrench. On the whole, it does not conform to the inertia of arm movement and wastes strength. On the whole, its practicability is poor, and it is still necessary to improve it.

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