CN205149331U - Ruler - Google Patents

Abstract

The utility model discloses a ruler, which comprises a ruler body, be provided with rotatory strip on the blade, the blade sets up the type into U, the both ends of rotatory strip are connected in the recess of U type blade through the pivot, the edge of rotatory strip sets up to the straight line edge, the edge on rotatory strip surface is provided with the scale. The utility model provides an enough avoid the scale wearing and tearing, have more permanent life's ruler.

Description

A kind of ruler

Technical field

The utility model relates to a kind of testing tool, and more particularly, it relates to a kind of ruler.

Background technology

Ruler is a kind of survey tool common in life.Be commonly used to the measurement carrying out adjusting the distance or mapping, be widely used in the fields such as mathematics, measurement, engineering.

And ruler on the market, structure is all comparatively simple.General ruler is all elongated rectangular shape shapes, and the edge on its surface is provided with scale, in specifically using, more facilitate reading.This traditional ruler is after having used of a specified duration, and the scale being positioned at its surface will be worn, and such user just cannot use this ruler clearly to carry out and measure or draw, and causes the trouble in use procedure.

Utility model content

For the deficiency that prior art exists, the purpose of this utility model is to provide one to avoid scale-wearing, has the ruler in more permanent service life.

For achieving the above object, the utility model provides following technical scheme: a kind of ruler, comprise blade, described blade is provided with rotating bars, described blade is set to U-shaped, the two ends of described rotating bars are connected to the indentation, there of U-shaped blade by rotating shaft, the edge of described rotating bars is set to linear edge, and the edge on described rotating bars surface is provided with scale.

The utility model is set to further: the thickness of described blade is identical with the thickness of rotating bars, and described rotating bars is rectangular-shaped.

The utility model is set to further: three surfaces of described rotating bars are provided with scale.

By adopting technique scheme, rotating bars can be arranged on U-shaped blade by rotating shaft, and such rotating bars just can carry out one around the shaft relative to U-shaped blade and rotate.Scale simultaneously on rotating bars can play ruler as mark when measuring.Only rotating bars need be rotated in time using, just can be good at by graduated for band one side away from desktop or paper, reduce the wearing and tearing of scale strip, thus increase the service life of whole ruler.

Accompanying drawing explanation

Fig. 1 is the structure chart of the utility model ruler embodiment.

In figure: 1, blade; 2, rotating bars; 3, rotating shaft; 4, scale.

Detailed description of the invention

With reference to Fig. 1, a kind of boiler embodiments of the utility model is described further.

A kind of ruler as shown in Figure 1, comprises blade 1, and blade 1 is set to U-shaped in the present embodiment, and its length is set to 22cm, and its thickness is set to 0.5cm.And the U-shaped concave interior of U-shaped blade 1 is provided with a rotating bars 2, and rotating bars 2 is set to cuboid, long 20cm, height and width are all set to 0.5cm.And at the two ends of rotating bars 2, be connected on blade 1 by rotating shaft 3.No matter the wide and height of rotating bars 2 is set to 0.5cm is in order to rotating bars 2 can be allowed to be rotate to what state, can both keep a plane with whole blade 1 here, it is more convenient to this makes it possible to when use ruler, more accurately.

And in the present embodiment, do not install in four planes of rotating shaft 3 at rotating bars 2, have chosen arbitrarily on three faces, be provided with scale 4 at its edge.And rotating bars 2 is here set to transparent, can better person easy to use can be good at seeing scale 4 in the process used like this.

After the mapping of use ruler, only need rotate rotating bars 2, by rotating bars 2 there is no the one side of scale 4, against desktop and putting, the scale 4 on other three just can be protected not to be worn.And be provided with scale 4 on three of rotating bars 2 in the present embodiment, be equivalent to there are three rulers.When the scale 4 of wherein one side is worn, or ought the damaged injustice in edge of wherein one side time, rotating bars 2 is rotated, just can be unaffected.Be equivalent to be combined in by three rulers together, its service life is on three times of traditional ruler.

The above is preferred embodiment of the present utility model, under not departing from the prerequisite of the utility model principle to those skilled in the art, can also make some modification and improvement, and these also should be considered as the protection domain of utility model.

Claims (3)

1. a ruler, comprise blade, it is characterized in that: described blade is provided with rotating bars, described blade is set to U-shaped, the two ends of described rotating bars are connected to the indentation, there of U-shaped blade by rotating shaft, the edge of described rotating bars is set to linear edge, and the edge on described rotating bars surface is provided with scale.

2. ruler according to claim 1, is characterized in that: the thickness of described blade is identical with the thickness of rotating bars, and described rotating bars is rectangular-shaped.

3. ruler according to claim 2, is characterized in that: three surfaces of described rotating bars are provided with scale.