CN204726101U

CN204726101U - A kind of safe and portable compasses with precisely regulating radius scale

Info

Publication number: CN204726101U
Application number: CN201520222943.9U
Authority: CN
Inventors: 王熙岳
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-04-12
Filing date: 2015-04-12
Publication date: 2015-10-28
Anticipated expiration: 2025-04-12

Abstract

The utility model relates to a kind of safe and portable compasses with precisely regulating radius scale, and it is made up of ruler, knob, syringe needle, the pen cap, pen core and slide block; Fluted in ruler, there is scale in front, and be provided with opening and knob simultaneously, inside is provided with slide block; Knob has two, and lower end is all provided with slide block, and one of them both sides is provided with syringe needle, and another both sides are provided with the pen cap; Syringe needle has two, and one is long and the other is short, and short end points to scale; The pen cap divides two parts, and a part is transparent flat cylinder, and have wedge angle lines to point to ruler scale above, another part is provided with pen core.The utility model had both drawn the circle of required diameter by slip compasses, by syringe needle and pen core precession, can prevent scathing again; And structure is simple, easy to use, practical.

Description

A kind of safe and portable compasses with precisely regulating radius scale

Technical field

The utility model relates to a kind of compasses, especially a kind of safe and portable compasses with precisely regulating radius scale.

Background technology

Compasses, a well-known drawing tool is also the study article of student's indispensability, no matter is pupil, or university student, or the people worked, and all may use compasses.

We are when use compasses, frequent meeting is stung by compasses because of carelessness, particularly pupil, they also can use compasses, but compasses may be held play because thoughtless, stab oneself or other people like that possibly, there is very large potential safety hazard, so compasses are all load with box substantially, not only protect user and also protect compasses; Meanwhile, we certainly also will use other drawing tools, such as pencil, ruler, erasing rubber etc., and these drawing tools separate mostly when using drawing for compasses, inconvenient when use; In most cases, we draw circle is all the circle needing one, picture to determine diameter, and compasses does not have ruler, also needs to determine diameter in advance when drawing like that, and then draws circle, like that not only loses time but also the fenestra drawn may have error.

Utility model content

In order to overcome the deficiency of above-mentioned existing product, the purpose of this utility model is to provide a kind of safe and portable compasses with precisely regulating radius scale, it adopts and be provided with slide block on compasses, slide block is located in ruler, the slip of slide block can drive sliding on ruler of compasses, compasses can rotate relative to slide block simultaneously, syringe needle is not exposed and hurts sb.'s feelings.

The technical scheme adopted to realize the purpose of this utility model is: a kind of safe and portable compasses with precisely regulating radius scale, is characterized in that: it is made up of ruler, knob, syringe needle, the pen cap, pen core and slide block; Fluted in described ruler, there is scale in front, and be provided with opening and knob simultaneously, inside is provided with slide block; Described knob has two, and lower end is all provided with slide block, and one of them both sides is provided with syringe needle, and another both sides are provided with the pen cap; Described syringe needle has two, and one is long and the other is short, and short end points to scale; The described pen cap divides two parts, and a part is transparent flat cylinder, and have wedge angle lines to point to ruler scale above, another part is provided with pen core.

The beneficial effects of the utility model are: it both by slip compasses to draw the circle of required diameter, by syringe needle and pen core precession, scathing can be prevented again; And structure is simple, easy to use, practical.

Accompanying drawing explanation

Below in conjunction with the drawings and specific embodiments, the utility model is further described.

Fig. 1 is the utility model structure chart

Fig. 2 is the utility model side view sectional view

Fig. 3 is the utility model front view partial sectional view

1-ruler, 2-knob, 3-syringe needle, the 4-pen cap, 5-pen core, 6-slide block in figure.

Detailed description of the invention

In the first embodiment shown in Fig. 1, Fig. 2, Fig. 3, a kind of safe and portable compasses with precisely regulating radius scale, is characterized in that: it is made up of ruler, knob, syringe needle, the pen cap, pen core and slide block; Fluted in described ruler, there is scale in front, and be provided with opening and knob simultaneously, inside is provided with slide block; Described knob has two, and lower end is all provided with slide block, and one of them both sides is provided with syringe needle, and another both sides are provided with the pen cap; Described syringe needle has two, and one is long and the other is short, and short end points to zero graduation; The described pen cap divides two parts, and a part is transparent flat cylinder, and have wedge angle lines to point to ruler scale above, another part is provided with pen core.

At Fig. 1, Fig. 2, with the second embodiment shown in 3, described ruler scale is used for measuring length or to compasses determination diameter, but does not need picture bowlder, can also work as the use of common ruler; Can relatively rotate between described knob and slide block, fix with syringe needle and the pen cap, rotate knob and syringe needle or reservoir tip can be made not to expose ruler edge, prevent from stabbing; Center of circle fixing point when described syringe needle long end is compasses use, the i.e. center of circle of drawn circle; Ruler edge given prominence to by described pen cap transparent flat cylinder, facilitates hand to pinch and draws circle herein, and the number of division that wedge angle line points to is drawn radius of circle size, can see number of division by transparent flat cylinder; It is interior and fixing that the pen cap is inserted in described pen core one end, and the pen cap is exposed in one end, is that circle is drawn in the center of circle with syringe needle; Described slide block is stuck in ruler groove, can slide along ruler, thus changes compasses picture radius of a circle.

When using the utility model, need picture bowlder, first will have pen cap port ons to required radius, then needle tip is inserted circle centre position, then pinch pen cap upper end rotary ruler combination picture circle, when not needing picture circle maybe to need to use ruler, syringe needle and the pen cap are rotated, makes tip not expose ruler edge.

Claims

1. band precisely regulates safe and portable compasses for radius scale, it is characterized in that: it is made up of ruler, knob, syringe needle, the pen cap, pen core and slide block; Fluted in described ruler, there is scale in front, and be provided with opening and knob simultaneously, inside is provided with slide block; Described knob has two, and lower end is all provided with slide block, and one of them both sides is provided with syringe needle, and another both sides are provided with the pen cap; Described syringe needle has two, and one is long and the other is short, and short end points to zero graduation; The described pen cap divides two parts, and a part is transparent flat cylinder, and have wedge angle lines to point to ruler scale above, another part is provided with pen.

2. band according to claim 1 precisely regulates the safe and portable compasses of radius scale, it is characterized in that: can relatively rotate between described knob and slide block, fixes with syringe needle and the pen cap.

3. band according to claim 1 precisely regulates the safe and portable compasses of radius scale, it is characterized in that: center of circle fixing point when described syringe needle long end is compasses use, the i.e. center of circle of drawn circle.

4. band according to claim 1 precisely regulates the safe and portable compasses of radius scale, it is characterized in that: ruler edge given prominence to by described pen cap transparent flat cylinder, and hand pinches draws circle herein, and the number of division that wedge angle line points to is drawn radius of circle size.

5. band according to claim 1 precisely regulates the safe and portable compasses of radius scale, it is characterized in that: it is interior and fixing that the pen cap is inserted in described pen core one end, and the pen cap is exposed in one end.

6. band according to claim 1 precisely regulates the safe and portable compasses of radius scale, it is characterized in that: described slide block is stuck in ruler groove, can slide along ruler.