CN201863580U

CN201863580U - Cyclograph

Info

Publication number: CN201863580U
Application number: CN201020617689XU
Authority: CN
Inventors: 陈江雪
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-11-19
Filing date: 2010-11-19
Publication date: 2011-06-15
Anticipated expiration: 2020-11-19

Abstract

A cyclograph relates to a circle drawing tool. The utility model provides the cyclograph, which not only can be used for drawing a circle by students, but also is used for drawing the circle in a project, and comprises a support, a rotary rod, a dividing ruler, a vernier, a pen and a graticule, wherein the support is provided with a beam and two supporting feet, the two ends of the beam are connected with the top parts of the two supporting feet, the rotary rod is rotatably connected with the middle part of the beam, the top part of the rotary rod is provided with a handle, and one end of the dividing ruler is fixed at the lower part of the rotary rod, the other end of the dividing ruler is connected with the vernier, and the pen is arranged on the vernier. Because the support which consists of the beam capable of moving up and down and two supporting feet is arranged, a pattern can be prevented from deformation which is caused by the movement of a tool during the circle drawing process. Because a circle drawing unit which consists of the rotary rod, the handle, the dividing ruler, the vernier and the pen is adopted, the radius of the circle can be determined through the position of the veriner, and then a circle is drawn by rotating the handle. The cyclograph can easily draw the circle on soft or hard surfaces, and can accurately determine the radius of the circle without using other dividing rulers.

Description

A kind of cyclograph

Technical field

The utility model relates to a kind of circle tool.

Background technology

At present, drawing the round instrument that uses mainly is compasses.People through compasses commonly used may can have such experience: very little circle all is not easy picture with very big circle, can't be drawn as a real circle sometimes at all, but several circular arc is stitched together.Have the shortcoming of compasses now and cause the reason of these shortcomings to be summarized as follows: the first, figure deformation.Need when drawing circle firmly just can increase the weight of person's handwriting downwards, make figure clear with compasses.But finger wants one week of slewing circle stem could form complete figure simultaneously.If middle the pause, because the compasses instability, hand moves the vestige that splicing just appears in the circle of drawing the back slightly.Since downwards firmly with rotate these 2 different actions whiles and finish by a hand, but also to guarantee that round dot is mobile, see that from the physiological structure angle that stressed combination is still pointed very high difficulty is all arranged.The second, compass foot moves.Because two legs of compasses are diverged from a moving fulcrum, when exerting oneself downwards, because the effect of horizontal component, two legs are easy to move, and make figure deformation.The 3rd, center of circle location difficulty.When at upper drawing circles such as the paper of softness, clothes, exert oneself downwards also may cause the needle point of round dot that material is punctured very big hole when big, when compasses rotated, the hole enlarged, and causes home position to move.When at hard surperficial upper drawing circle such as metal or glass, fixedly the position of round dot has constituted very large challenge, sometimes even can't realize.The 4th, there is not rule.Because existing compasses generally all do not have rule, therefore must at first after having measured size on the another one rule, draw circle with compasses again, more loaded down with trivial details and occur error easily.

In order to overcome the above-mentioned shortcoming of common compasses, people have designed the novel circle tool of multiple different structure.Chinese patent ZL94245810.9, ZL 00246797.6, ZL 200720088573.9, ZL 94244076.5, ZL 92244952.X and ZL93223979.X etc. have increased rule between the bipod of common compasses, therefore can directly on compasses, measure radius of a circle, the problem of poor stability when still not solving common compasses center of circle location difficulty and picture.In addition, Chinese patent CN 85204880U, employing suckers such as 200610125292.7 and 200111349.6 replace the pilot pin of common compasses as the strong point, therefore can locate on hard, even curface, have solved the difficult problem that move in the center of circle when drawing.But for the surface of porous material, cloth for example, this localization method is improper.The size of sucker has determined the size of the smallest circle that drawing tools can draw in addition.If sucker is too little, the poor stability of compasses, if sucker is too big, the very little circle of diameter can't draw.

This shows, do not have a kind of design to solve above-mentioned all problems simultaneously though above-mentioned new design has solved a part of problem in four aspect problems that common compasses exist.

Summary of the invention

The objective of the invention is in order to overcome the above-mentioned shortcoming of existing circle tool, provide a kind of and both can be used for the student and learn the picture circle, can be used for the cyclograph of engineering drawing circle again.

The utility model is provided with support, dwang, rule, vernier, paintbrush and graticule, support is provided with crossbeam, the 1st leg and the 2nd leg, the crossbeam two ends are connected with the top of the 1st leg with the 2nd leg respectively, the middle part of dwang and crossbeam is rotationally connected, the top of dwang is provided with handle, one end of rule is fixed on the dwang bottom, and the other end of rule is connected with vernier, and paintbrush is located on the vernier.

Described the 1st leg bottom and the 2nd leg bottom can be respectively equipped with graticule.

Be connected by alignment pin between described crossbeam two ends and the 1st leg and the 2nd leg, the top of alignment pin is provided with external screw thread, is fixed together with the screw hole of crossbeam, and alignment pin inserts in the hole of 2 legs, plays the effect of location and guiding.The bottom of described alignment pin can be provided with spring, is provided with screw in spring bottom, and screw is that alignment pin is extracted out from 2 legs when preventing that crossbeam from rising, and causes breaking away between crossbeam and 2 legs.

Can be provided with lock screw on vernier, lock screw is in order to prevent that vernier moves in the picture circle process, to cause change in radius.Can be provided with positioning step at crossbeam lower surface and dwang junction, positioning step is in order to make the fixed distance between crossbeam and the rule.Can be provided with packing ring and spring in beam surface upper and dwang junction, its objective is in order to prevent the downward landing of dwang, and spring can guarantee that the lower surface of packing ring and the upper surface of positioning step closely contact with the upper and lower surface of crossbeam respectively simultaneously, but the rotation that does not produce excessive drag effects dwang again.

Compare with existing circle tool, the utlity model has following outstanding advantage:

1) owing to is provided with by a crossbeam moving up and down and 2 supports that leg is formed, therefore can prevent that the mobile figure that causes because of apparatus deforms in the picture process, play good stabilization, it is stable to draw the bowlder paintbrush, therefore paintbrush remains on the track of circumference always, obtains circle at last.

2) owing to adopt dwang, handle, rule, vernier and paintbrush to form the picture unit, by adjusting the position of vernier, can determine radius of a circle, turning handle is drawn circle again, and is not only easy to operate, and can accurately determine radius of a circle.

3) owing to be provided with graticule 2 leg bottoms, therefore when drawing bowlder with given home position, graticule is used to determine the center of circle, during operation, draw straight line with the center of circle that ruler is given excessively, and good at half position mark of both sides, center of circle straight line upper bracket span respectively, the graticule on 2 legs of support to be aimed at respectively on 2 above-mentioned gauge points, turning handle can the picture circle.

4) easily at soft or hard surperficial upper drawing circle.

5) need just can accurately not determine radius of a circle by other rule.

Description of drawings

Fig. 1 is that the structure of the utility model embodiment is formed schematic diagram.

Fig. 2 is that the deformation mechanism of 2 legs of the utility model embodiment is formed schematic diagram.

Fig. 3 is the graticule schematic diagram of the utility model embodiment.

The specific embodiment

Following examples will be further described the utility model in conjunction with the accompanying drawings.

Referring to Fig. 1～3, the utility model embodiment is provided with support, dwang 3, rule 5, vernier 6, paintbrush 7 and graticule 8.Support is made up of crossbeam the 1, the 1st leg 21 and the 2nd leg 22, crossbeam 1 two ends are connected with the top of the 1st leg 21 and the 2nd leg 22 respectively, dwang 3 is located at the middle part of crossbeam 1, dwang 3 is rotationally connected with the middle part of crossbeam 1, the top of dwang 3 is provided with handle 4, one end of rule 5 is fixed on dwang 3 bottoms, and the other end of rule 5 is connected with vernier 6, and paintbrush 7 is located on the vernier 6.Be respectively equipped with graticule 8 in the 1st leg 21 bottoms and the 2nd leg 22 bottoms.

Can be connected by alignment pin 14 between described crossbeam 1 two ends and the 1st leg 21 and the 2nd leg 22, the top of alignment pin 14 is provided with external screw thread 13, is fixed together with the screw hole of crossbeam 1, and alignment pin 14 inserts in the hole of 2 legs, plays the effect of location and guiding.The bottom of described alignment pin 14 can be provided with spring 15, is provided with screw 16 in spring 15 bottoms, and screw 16 is that alignment pin 14 is extracted out from 2 legs when preventing that crossbeam 1 from rising, and causes breaking away between crossbeam 1 and 2 legs.

Be provided with lock screw 9 on vernier 6, lock screw 9 is in order to prevent that vernier 6 moves in the picture circle process, to cause change in radius.Be provided with positioning step 10 at crossbeam 1 lower surface and dwang 3 junctions, positioning step 10 is in order to make the fixed distance between crossbeam 1 and the rule 5.Be provided with packing ring 11 and spring 12 at crossbeam 1 upper surface and dwang 3 junctions, its objective is in order to prevent dwang 3 downward landings, and spring 12 can guarantee that the lower surface of packing ring 11 and the upper surface of positioning step 10 closely contact with the upper and lower surface of crossbeam 1 respectively simultaneously, but the rotation that does not produce excessive drag effects dwang 3 again.

Support is made up of a crossbeam 1 moving up and down and 2

legs

21 and 22, so support plays stabilization, prevents in the picture process because the mobile figure that causes of apparatus deforms.Draw bowlder, gently downwards by crossbeam 1 moving up and down, paintbrush 7 is fully contacted, with picture so that can draw figure clearly with 2 fingers.Form the picture unit by dwang 3, flat handle 4, rule 5, vernier 6 and paintbrush 7, adjust the position of vernier 6, can determine radius of a circle, turning handle 4 is drawn circle again.When drawing bowlder with given home position, determine the center of circle with graticule 8, draw straight line with the center of circle that ruler is given excessively, and it is good at half position mark of both sides, center of circle straight line upper bracket span respectively, the graticule of being located on two legs of support is aimed at respectively on 2 above-mentioned gauge points, and turning handle 4 can the picture circle.

Following example provides using method of the present utility model.

Example 1: the position to the center of circle does not have special requirement, and drawing diameter on plate glass is the circle of 5mm

During use, the distance between 2 legs is 100mm, and the vernier on the rule is moved to the 2.5mm place, gently screws the vernier lock screw with have gentle hands then, prevents that picture bowlder vernier from moving.The utility model is placed on the plate glass, left-handed 2 fingers are depressed crossbeam gently, and paintbrush is contacted with glass plate again, and turning handle obtains the circle that diameter is 5mm then.

Example 2: give the position of centering, drawing diameter on paper is the circle of 80mm

During use, the distance between 2 legs is 100mm, at first draws straight line with the given excessively center of circle of ruler on paper, and mark 2 gauge points on this straight line apart from center of circle 50mm place of the two ends in the center of circle.Vernier on the rule is moved to the 40mm place, gently screw the vernier lock screw with have gentle hands then, prevent that picture bowlder vernier from moving.The utility model is placed on the paper, 2 graticules are overlapped with 2 gauge points on the straight line respectively.Left-handed 2 fingers are depressed crossbeam gently, and paintbrush is contacted with paper, turning handle then, and obtaining diameter is 80mm, and is the circle in the center of circle with the set point.

Claims

1. cyclograph, it is characterized in that being provided with support, dwang, rule, vernier, paintbrush and graticule, support is provided with crossbeam, the 1st leg and the 2nd leg, the crossbeam two ends are connected with the top of the 1st leg with the 2nd leg respectively, the middle part of dwang and crossbeam is rotationally connected, and the top of dwang is provided with handle, and an end of rule is fixed on the dwang bottom, the other end of rule is connected with vernier, and paintbrush is located on the vernier.

2. a kind of cyclograph as claimed in claim 1 is characterized in that described the 1st leg bottom and the 2nd leg bottom are respectively equipped with graticule.

3. a kind of cyclograph as claimed in claim 1 is characterized in that being connected by alignment pin between described crossbeam two ends and the 1st leg and the 2nd leg.

4. a kind of cyclograph as claimed in claim 3 is characterized in that the top of described alignment pin is provided with external screw thread, and the screw hole of external screw thread and crossbeam is fixed together, and alignment pin inserts in the hole of 2 legs.

5. as claim 3 or 4 described a kind of cyclographs, it is characterized in that the bottom of described alignment pin is provided with spring, be provided with screw in the spring bottom.

6. a kind of cyclograph as claimed in claim 1 is characterized in that described vernier is provided with lock screw.

7. a kind of cyclograph as claimed in claim 1 is characterized in that described crossbeam lower surface and dwang junction are provided with positioning step.

8. a kind of cyclograph as claimed in claim 1 is characterized in that described beam surface upper and dwang junction are provided with packing ring and spring.