CN201329740Y

CN201329740Y - Ruler capable of drawing circle

Info

Publication number: CN201329740Y
Application number: CNU2008203038388U
Authority: CN
Inventors: 吴丽华
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-12-29
Filing date: 2008-12-29
Publication date: 2009-10-21
Anticipated expiration: 2018-12-29

Abstract

The utility model belongs to the field of office stationery, and specifically relates to a ruler capable of drawing circle. The technical problem to be settled is to provide a safe circle-drawing tool. According to the circle-drawing tool, the ruler is installed with a fixing hole and a slideway. The slideway is installed with a slider matched with the slideway. The slideway and slider are installed with a slider fixing structure. The slider is installed with at least one small hole. When the ruler according to the utility model is adopted for drawing circle, after the slider is slide to a corresponding position according to the dimension of circle to be drawn, the slider is fixed through a slider fixing structure. An object of pen, etc. similar with pen is inserted into the fixing hole. The position fixed through the fixing hole is the position of circle center. Then the pen is inserted into the small hole on the slider. The object inserted into the fixing hole is stabilized. The pen on the small hole is moved correspondingly for drawing circle. As the position of slider is fixed, the pattern can be drawn smoothly. The circle-drawing tool does not contain the dangerous objects of pinpoint, etc. Only the pen is required for assisting fixation and circle drawing in circle drawing. The safety for using and carrying is greatly increased.

Description

Can draw round ruler

Technical field

The utility model belongs to the office appliance field, is specifically related to draw round ruler.

Background technology

Serve as reasons rotating shaft four parts of bull stick, handle and handle below of the bull stick that has needle point, band paintbrush of existing compasses are formed.There is following shortcoming in these compasses:

1, poor stability: because a bull stick band needle point is arranged, once had report that people so needle point are arranged and injured.

2, use inconvenient: if want divider calipers to decide the bowlder of size, the distance of earlier to adjust two bull sticks according to ruler at tip (needle tip and pen tip) is to determine radius of a circle, and picture is round accurate inadequately like this, inconvenience.

3, be not easy to carry: this compasses volume is big, and needle point is arranged, and needs adorning with the box of special use, and volume increases; And if airtight not tight, compasses drop out box, and are very easily injured under unwitting situation, stay potential safety hazard.

4, be not durable: these compasses all serve as the rotating shaft of handle below with nut, but this nut is prone to loosening even disengaging, is not durable, and are difficult for after loosening restoring, and influence the picture quality.

5, not attractive in appearance: as owing to draw bowlder, to need on paper, to stay pinprick, influence cleaning.

Thereby, be badly in need of developing overcoming the problems referred to above, safe and convenient durable circle tool.

The utility model content

The technical problem that the utility model solved provides a kind of safe circle tool.

This circle tool is to draw round ruler, and blade is provided with fixing hole and slideway, and slideway is provided with adaptive with it slide block, and slideway and slide block are provided with the slide block fixed structure, and slide block is provided with at least one aperture.

Adopt the utility model ruler to draw bowlder, fix by the slide block fixed structure after round big young pathbreaker's slide block slides to the relevant position according to drawing, be inserted on the fixing hole with similar objects such as pens, what determine by fixing hole promptly is the position in the center of circle, again with penholder on the aperture on the slide block, the stable object that is inserted on the fixing hole, the pen rotation of taking advantage of a situation on the mobile aperture is drawn, because the slide position is fixed, then the aperture center of circle is to the fixed distance in the fixing hole center of circle, the circle of then can drawing smoothly.Do not have dangerous goods such as needle point in this circle tool, only need when drawing, to adopt pen auxiliary fixing, draw circle, use and the security when carrying improves greatly.

The beneficial effects of the utility model are: do not have dangerous goods such as needle point in the circle tool, use and the security when carrying improves greatly.

Description of drawings

Fig. 1 can draw round ruler for the utility model.

Be labeled as among the figure: 1-blade, 2-fixing hole, 3-slideway, 4-slide block, 5-aperture, 6-graticule, 7-graduation mark.

The specific embodiment

Below by to the description of the utility model specific embodiment explanation but do not limit the utility model.

The utility model technology adopts ruler as drawing tools.

As shown in Figure 1, the blade 1 that can draw round ruler is provided with fixing hole 2 and slideway 3, and slideway 3 is provided with adaptive with it slide block 4, and slideway 3 and slide block 4 are provided with the slide block fixed structure, and slide block 4 is provided with at least one aperture 5.Utilize fixing hole 2 to draw the centers of circle during picture, utilize aperture 5 to draw circumference, slide block is fixed on the slideway by the slide block fixed structure, constant radius, and the circle of then can drawing smoothly, this slide block fixed structure is similar to the slideway on the existing cutter and the design of slide block.

As above-mentioned distortion of drawing round ruler, the position of fixing hole 2 both can be in the end of ruler blade, also can be at the middle part of ruler blade.

Be convenient to draw and the fixing center of circle in order to make, the inner surface of fixing hole 2, aperture 5 is arranged to infundibulate, so that penholder is gone into.

For the ease of drawing the circle of various radiuses, slideway 3 is parallel with the long limit of ruler, and the center of circle of fixing hole 2 is on the center line of slideway 3; Slide block 4 is provided with graticule 6, and graticule 6 is parallel with graduation mark 7, and the center of circle of aperture 5 is arranged on the intersection point of graticule 6 and the center line of slideway 3.Sliding slider, when graticule 6 aligns with graduation mark 7, fixing slide block, it is exactly the length that scale indicates that penholder is gone into these aperture 5 drawn round radius corresponding.

Adopt the flexibility of ramp design picture bowlder adjustment radius strong, adjust the position of slide block 4 on slideway 3 and just can determine the picture radius of a circle, fixing point 2 centers of circle are the difference of the scale value (generally being made as zero point) of fixing hole 2 center of circle correspondences to the scale value of aperture 5 center of circle correspondences to the distance in aperture 5 centers of circle.

Claims

1. can draw round ruler, it is characterized in that: blade is provided with fixing hole and slideway, and slideway is provided with adaptive with it slide block, and slideway and slide block are provided with the slide block fixed structure, and slide block is provided with at least one aperture.

2. according to claim 1ly draw round ruler, it is characterized in that: slideway is parallel with the long limit of ruler, and the center of circle of fixing hole is on the center line of slideway; Slide block is provided with graticule, and graticule is parallel with graduation mark, and the center of circle of the aperture on the slide block is arranged on the intersection point of center line of graticule and slideway.

3. according to claim 1ly draw round ruler, it is characterized in that: described fixing hole inner surface is arranged to infundibulate.

4. according to claim 1ly draw round ruler, it is characterized in that: described little internal surface of hole is arranged to infundibulate.

5. according to claim 1ly draw round ruler, it is characterized in that: described fixed hole position is in the middle part of blade.

6. according to claim 1ly draw round ruler, it is characterized in that: described fixed hole position is in the end of blade.

7. according to claim 1ly draw round ruler, it is characterized in that: the described fixing hole center of circle is corresponding to the zero graduation of blade.