CN222157047U - Regular polygon drawing rule - Google Patents
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- CN222157047U CN222157047U CN202420030106.5U CN202420030106U CN222157047U CN 222157047 U CN222157047 U CN 222157047U CN 202420030106 U CN202420030106 U CN 202420030106U CN 222157047 U CN222157047 U CN 222157047U
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Abstract
A regular polygon drawing rule comprises a lower pointer, an upper pointer, a side length rule, a thread cover, a square head bolt, a knurled nut and a center fixer, wherein the lower pointer is marked with angle scales, when the upper pointer rotates to be consistent with the degree of the center angle of the regular polygon to be drawn, the thread cover is rotated to fix the angle of the upper pointer and the angle of the lower pointer, the side length rule is slid to enable one side of the side length rule to be consistent with the length scales of the upper pointer and the lower pointer and correspond to the radius of a regular polygon circumscribed by the regular polygon to be drawn, the knurled nut is screwed, the center mark of the center fixer is fixed to correspond to the geometric center of the regular polygon to be drawn, a thread hollow cylinder of the lower pointer penetrates through the center fixer to draw a first side line along the side length rule, the center fixer is used as a circle center, other parts are rotated until the intersection point of the side length rule and the lower pointer (the upper pointer) is overlapped with the drawn side line, and the whole regular polygon is drawn.
Description
Technical Field
The utility model relates to the field of drawing measurement, in particular to a regular polygon drawing rule.
Background
In the traditional construction, a plurality of tools such as a ruler, a compass, a protractor and the like are needed to be used for measuring and calculating in a plurality of steps, and the problems of complex operation and the like exist.
The utility model integrates the functions of straight ruler, protractor and polygon drawing, can conveniently and rapidly draw regular polygons, reduces the carrying quantity of drawing tools, and is convenient for drawing staff to carry out work.
Disclosure of Invention
The utility model aims to provide a regular polygon drawing rule, which solves the problems of complicated operation and the like for drawing the regular polygon in the background technology and simplifies drawing steps.
In order to achieve the aim, the utility model provides the technical scheme that the regular polygon drawing rule comprises a lower pointer, an upper pointer, a side length rule, a thread cover, a square head bolt, a knurled nut and a center fixer;
The upper pointer of the lower pointer is connected through a threaded hollow cylinder, a threaded cover is fastened, a side length ruler sliding groove is arranged at the head of the square head bolt, the screw rod part of the square head bolt penetrates through strip-shaped holes of the side length ruler, the lower pointer or the upper pointer, a knurled nut is used for fastening the square head bolt, the side length ruler, the lower pointer and the upper pointer, the lower pointer is marked with angle scales, when the upper pointer rotates to be consistent with the degree of the central angle of a regular polygon to be drawn, the threaded cover is rotated to fix the angle of the upper pointer and the lower pointer, the side length ruler, the upper pointer and the lower pointer are provided with length scales, the side length ruler is slid, one side of the side length ruler is consistent with the length scales of the upper pointer and the lower pointer and corresponds to the radius of a regular polygon to be drawn, the knurled nut is screwed down, the center of the regular polygon to be drawn is fixed corresponding to the standard mark of the center fixer, the threaded hollow cylinder of the lower pointer penetrates through the center fixer, the first strip edge line is drawn along the side length ruler, the center fixer is rotated with the center fixer as the center until the intersection point of the side length ruler and the lower pointer or the upper pointer coincides with the drawn edge line or the drawn edge line, and the second edge line is drawn, and regular polygon is drawn, and is completely drawn.
Preferably, the lower pointer comprises a graduated scale, an angle ruler, a strip-shaped hole and a threaded hollow cylinder;
The appearance of the lower pointer is preferably P-shaped and consists of a strip-shaped graduated scale and a fan-shaped angle scale, the graduated scale is provided with a strip-shaped hole, the width of the strip-shaped hole is slightly larger than the diameter of a square head bolt and a screw rod, length scales are marked on two sides of the strip-shaped hole, a threaded hollow cylinder for fixing the upper pointer and a threaded cover is arranged on the lower pointer, the threaded hollow cylinder is an external thread, the center of the threaded hollow cylinder is positioned at a zero scale position on one side of the length scales of the graduated scale, the angle ruler is fan-shaped and forms a whole with the graduated scale, the fan-shaped circle center of the angle ruler is located at the circle center of the threaded hollow cylinder and coincides with zero graduation of the graduated scale, the outer side of the angle ruler is marked with angle graduations, the lower pointer is bent twice to enable the upper surface of the graduated scale to be flush with the upper surface of the upper pointer graduated scale after the lower pointer is completely assembled, and the edge of one side of the lower pointer is chamfered so as to facilitate drawing an extension line of a regular polygon edge.
Preferably, the upper pointer comprises a fixed ring, a bar-shaped hole and a graduated scale;
The inner diameter of the fixed ring is slightly larger than the outer diameter of the lower pointer threaded hollow cylinder, a strip-shaped hole is formed in the graduated scale, the width of the strip-shaped hole is slightly larger than the diameter of the square head bolt and screw rod, length scales are marked on two sides of the strip-shaped hole, the circle center of the fixed ring is at the zero scale position on one side of the length scales, and the edge of one side of the lower surface of the upper pointer is chamfered so as to draw an extension line of a regular polygon side.
Preferably, the side length ruler comprises a graduated scale, a strip-shaped hole and a chute;
The graduated scale is provided with a bar-shaped hole, the width of the bar-shaped hole is slightly larger than the diameter of the square head bolt and screw, the two sides of the bar-shaped hole are marked with distance scales, for the convenience of measurement, the scale metering mode is central divergent, namely the middle part of the graduated scale is zero scale, the two ends of the graduated scale are half of the maximum metering value of the graduated scale, the chute is positioned below the strip-shaped hole and is rectangular in shape and used for placing the square head bolt head, the square head bolt is limited to rotate, and the edge of one side of the upper surface of the side length ruler is chamfered so as to draw the edge line of the regular polygon edge.
Preferably, the threaded cover comprises an upper cover, a through hole and threads;
The inner height of the upper cover is higher than that of the lower pointer threaded hollow cylinder, an inner thread is arranged on the threaded hollow cylinder and can rotate to press the upper pointer and the lower pointer, and the upper cover is provided with a through hole for placing the center fixer;
The upper cover is internally matched with the lower pointer threaded hollow cylinder in size, is provided with an internal thread matched with the lower pointer threaded hollow cylinder, can rotate to the threaded hollow cylinder through the thread, and is fastened with the lower pointer through screwing, so that the included angle of the upper pointer and the lower pointer is fixed, and the upper cover is provided with a through hole which is not smaller than the inner diameter of the lower pointer threaded hollow cylinder and is used for placing the center fixer.
Preferably, the thickness of the square head bolt head is not greater than the depth of the side length ruler chute, the square head bolt head can slide in the side length ruler chute, and the square head bolt screw rod can penetrate through the upper pointer (lower pointer) strip-shaped hole and the side length ruler strip-shaped hole.
Preferably, the appearance of the central fixer is cylindrical, the outer diameter of the central fixer is matched with the inner diameter of the threaded hollow cylinder, and the central fixer is made of transparent rigid materials and is grooved, and comprises a suction disc groove, a needle groove and a magnet groove;
The center of the sucker groove is provided with a center mark for positioning the geometric center of the regular polygon, the sucker groove can be used for placing a straight sucker, or the straight sucker can be inserted into the sucker groove of the center fixer to play a role in fixing after the sucker is aligned to the center point of the graph for adsorption, the needle groove can be inserted with a thin needle for fixing on a wooden or other rough plane, and the magnet groove can be used for placing a magnet for fixing on the surface of an iron object.
Preferably, the upper pointer or the lower pointer is parallel to the two pointers through turning.
Preferably, the upper pointer and the lower pointer are rotationally connected through the hollow cylinder with the lower pointer threads, tightness adjustment is performed by the screw cap, the included angle between the upper pointer and the lower pointer is determined through the center angle of the drawn regular polygon, the screw cap is fastened to prevent the upper pointer and the lower pointer from angular deflection, the side length ruler is fixed with the upper pointer and the lower pointer through the square head bolt and the knurled nut, the length scales corresponding to the bar hole positions of the upper pointer and the lower pointer are adjusted through the adjustment of the knurled nut, the chamfer edges of the side length ruler are equal to the radius of the drawn regular polygon, the knurled nut is fastened to prevent the side length ruler from generating relative displacement in the drawing process, and the length of the regular polygon is obtained through the addition of the scales on the two sides of the side length ruler.
Preferably, in the drawing process, the center fixer is perpendicular to the drawing surface, the center fixer center is overlapped and fixed with the geometric center position of the drawn regular polygon, the lower pointer threaded hollow cylinder passes through the center fixer, the first side position is determined, the first side is drawn along the side length scale, the center fixer is used as the center to rotate other parts until the intersection point of the side length scale and the lower pointer (upper pointer) coincides with the (extension line of the) first side line, the drawing of the second side line is started, and the like, each side of the regular polygon is drawn, and then the complete regular polygon is drawn.
The utility model has the technical effects and advantages that:
1. the utility model can determine the central angle, the circumscribing radius and the single side length of the drawn regular polygon through the coordination among the upper pointer, the lower pointer and the side length ruler, and can conveniently draw the required regular polygon by rotating and drawing lines by taking the standard center mark of the central fixer as the circle center after fixing the side length ruler of the upper pointer and the lower pointer, and can realize the functions of angle measurement, side measurement and the like through disassembling and assembling and changing the positions of the square head bolts and the knurled nuts.
2. According to the utility model, the upper pointer graduated scale part is parallel to the upper surface of the lower pointer graduated scale part, and the zero graduations of the graduated scale on the adjacent side of the upper pointer and the lower pointer are in the same position, namely the rotation center of the upper pointer coincides with the center point of the lower pointer angle ruler, so that the angle adjustment of the upper pointer and the lower pointer is convenient, and the threaded cover is used for fastening the upper pointer and the lower pointer, so that the angle of the upper pointer and the lower pointer is kept unchanged in the drawing process.
3. The square head bolt slides in the chute of the side length ruler, the radius of the drawn regular polygon is adjusted, the side length ruler adopts double-side scales, the drawing line reference edge can be freely selected, and the knurled nut is used for fastening the side length ruler, the upper pointer and the lower pointer, so that the side length ruler, the upper pointer and the lower pointer are kept stable in the drawing process.
4. The upper pointer, the lower pointer and the side length ruler are all provided with chamfers, so that the function of conveniently drawing a single-side extension line of a regular polygon and conveniently positioning the starting point of the next side is realized.
5. The utility model can utilize the lower pointer angle ruler and the upper pointer to directly measure the angle on the plane, or can utilize the lower pointer and the side length ruler to perform the angle taking work on the wall body included angle or the stair inclined plane after the square head bolt and the knurled nut which are used for fixing the upper pointer are removed, when the inner side edges of the lower pointer and the side length ruler are parallel to two measuring surfaces in use, the square head bolt and the knurled nut which are used for fixing the lower pointer are fastened, the upper pointer is rotated until the edge of the side length ruler is parallel to the scale line of the upper pointer, at the moment, the side length ruler is perpendicular to the upper pointer, and the included angle 'x' between the upper pointer and the lower pointer can be obtained through the reading of the upper pointer on the lower pointer angle ruler, so that the acquired angle is '90-x'.
6. The utility model can directly measure the length of an object by utilizing the graduated scales on the side length ruler, the upper pointer and the lower pointer, can also rotate the upper pointer to the position of 180 degrees shown by the lower pointer, can obtain a measured value by adding the readings of the upper pointer (the lower pointer), can fix the side length ruler and the upper pointer (the lower pointer) on a straight line by using the two square head bolts and the knurled nuts when a longer object needs to be measured, and can obtain the measured length by carrying out addition and subtraction operation on the readings of the side length ruler and the graduation of the upper pointer (the lower pointer) by sliding the side length ruler.
7. According to the utility model, each graduated scale adopts the graduation marks on two sides, and when the side length scale is slid, the graduation marks corresponding to the edge of the side length scale on the upper pointer (lower pointer) are observed, so that the radius of the drawn regular polygon circumscribed circle is determined, and the radius is convenient to judge.
8. The center fixer is made of transparent materials, so that the alignment of the quasi-center and the geometric center of the regular polygon is facilitated.
9. The utility model can combine the upper pointer and the lower pointer when not in use, laterally put the side length ruler, fasten the screw cap and the knurled nut, reduce the volume and facilitate carrying.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present utility model.
Fig. 2 is an exploded view of the whole of the present utility model.
FIG. 3 is a schematic diagram of the structure of the lower pointer of the present utility model;
FIG. 4 is a schematic diagram of the structure of the upper pointer of the present utility model;
FIG. 5 is a schematic view of the structure of the side length ruler of the utility model;
FIG. 6 is a schematic view of the structure of the screw cap of the present utility model;
Fig. 7 is a schematic structural view of the center holder of the present utility model.
FIG. 8 is a schematic view of three different modes of the center anchor of the present utility model.
FIG. 9 is a schematic diagram of a method for using the regular polygon according to the present utility model.
FIG. 10 is a schematic view of the angle measuring tape of the present utility model.
In the figure:
1. A lower pointer; 2, an upper pointer, 3, a screw cap, 4, a side length ruler, 5, a square head bolt, 6, a knurled nut, 7, a center fixer;
11. 12 parts of angle ruler, 12 parts of thread hollow cylinder, 13 parts of strip hole, 14 parts of graduated scale, 15 parts of edge chamfer;
21. the fixed ring, 22, the strip-shaped hole, 23, the graduated scale, 24, the edge chamfer;
31. 32, through holes, 33 and threads;
41. Bar-shaped holes, 42, edge chamfering, 43, a graduated scale, 44 and a chute;
71. suction disc groove 72, needle groove 73 and magnet groove.
Description of the embodiments
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model provides a regular polygon drawing rule as shown in figures 1-10, which comprises a lower pointer 1, an upper pointer 2, a side length rule 4, a thread cover 3, a square head bolt 5, a knurled nut 6 and a center fixer 7;
The upper pointer 2 of the lower pointer 1 is fastened through a threaded hollow cylinder connection 12, a threaded cover 3 is fastened, a chute 44 of the side length ruler 4 is placed in the head of the square head bolt 5, the screw rod part of the square head bolt 5 penetrates through strip holes 41 and 13 (22) of the side length ruler 4 and the lower pointer 1 (the upper pointer 2), a knurled nut 6 is used for fastening the square head bolt 5 and the side length ruler 4, the lower pointer 1 and the upper pointer 2, the lower pointer 1 is marked with angle scales, when the upper pointer 2 rotates to be consistent with the degree of the central angle of a regular polygon to be drawn, the threaded cover 3 is rotated to fix the angle of the upper pointer 2 and the lower pointer 1, the side length ruler 4, the upper pointer 2 and the lower pointer 1 are provided with length scales, the side length scales 4 are slid, one side of the side length scales of the upper pointer 2 and the lower pointer 1 are consistent with the required regular polygon circumcircle radius, the center of the center fixing nut 6 is screwed, the center fixing device 7 is corresponding to the required regular polygon geometric center, the lower pointer 1 is screwed, the threaded hollow cylinder 12 penetrates through the center fixing device 7, the center fixing device 4 is rotated to be coincident with the center line of the first side length ruler 4, and the right side line of the second side line is drawn until the right side line is completely coincident with the right side line of the right side line (4) is drawn, and the right side line is drawn.
As shown in fig. 2-4, the lower pointer comprises a graduated scale 14, an angle scale 11, a strip-shaped hole 13 and a threaded hollow cylinder 12;
The appearance of the lower pointer 1 is preferably P-shaped, the lower pointer is composed of a strip-shaped graduated scale 14 and a sector angle scale 11, the graduated scale 14 is provided with a strip-shaped hole 13, the width of the strip-shaped hole 13 is slightly larger than the diameter of a square head bolt 5 screw rod, length scales are marked on two sides of the strip-shaped hole 13, the lower pointer 1 is provided with a threaded hollow cylinder 12 used for fixing the upper pointer 2 and a threaded cover 3, the threaded hollow cylinder 12 is an external thread, the circle center of the threaded hollow cylinder 12 is at a zero scale position on one side of the length scale 14, the angle scale 11 is in a sector shape and is integrated with the graduated scale 14, the sector circle center of the angle scale 11 is located at the circle center of the threaded hollow cylinder 12 and coincides with the zero scale 14, an angle scale is marked on the outer side of the angle scale 11, the lower pointer 1 is enabled to be flush with the upper surface of the upper pointer 2 graduated scale 23 through turning, and one side edge of the lower surface of the lower pointer 1 is chamfered so as to draw an extension line of a regular polygon edge after the lower pointer 1 is completely assembled.
As shown in fig. 4, the upper pointer comprises a fixed circular ring 21, a bar-shaped hole 22 and a graduated scale 23;
The inner diameter of the fixed circular ring 21 is slightly larger than the outer diameter of the threaded hollow cylinder 12 of the lower pointer 1, a strip-shaped hole 22 is formed in the graduated scale 23, the width of the strip-shaped hole 22 is slightly larger than the diameter of a square head bolt 5 screw rod, length scales are marked on two sides of the strip-shaped hole 22, the circle center of the fixed circular ring 21 is at a zero scale position on one side of the length scales, and a chamfer 24 is formed in the edge of one side of the lower surface of the upper pointer 2 so as to facilitate drawing an extension line of a regular polygon side.
As shown in fig. 5, the side length ruler 4 comprises a graduated scale 43, a strip-shaped hole 41 and a chute 44;
The utility model discloses a square bolt, including square bolt 5, scale 43, bar hole 41 has been seted up on the scale 43, bar hole 41 width is slightly greater than square bolt 5 screw diameter, the distance scale is marked to the both sides in bar hole 41, for convenient measurement, this scale measurement mode be the center divergences, namely the scale mid portion is zero scale, the scale both ends are the half of the biggest measurement value of scale, spout 44 is located bar hole below, and the shape is the rectangle for place square bolt 5 head plays the restriction square bolt 5 pivoted effect, square 4 upper surface one side edge chamfer 42 is so that draw the boundary line of regular polygon.
As shown in fig. 6, the screw cap 3 includes an upper cap 31, a through hole 32, and screw threads 33;
The size of the inner part of the upper cover 31 is matched with that of the lower pointer threaded hollow cylinder 12, an inner thread 33 matched with the lower pointer threaded hollow cylinder 12 is arranged, the upper cover 31 can be rotated onto the threaded hollow cylinder 12 through the thread 33, the upper pointer 2 and the lower pointer 1 are fastened through screwing, so that the included angle of the two pointers is fixed, and the upper cover 31 is provided with a through hole which is not smaller than the inner diameter of the lower pointer threaded hollow cylinder 12 and is used for placing the central fixer 7.
As shown in fig. 7, the outer diameter of the central fixer 7 is cylindrical, and is matched with the inner diameter of the threaded hollow cylinder, and transparent rigid materials are selected and grooved, and the central fixer comprises a sucker groove 71, a needle groove 72 and a magnet groove 73;
The center of the sucker groove 71 is provided with a center mark for positioning the geometric center of a regular polygon, the sucker groove 71 can be used for placing a straight sucker, or the straight sucker can be inserted into the sucker groove 71 of the center fixer 7 to play a fixing role after being adsorbed by aligning the sucker with the center point of the graph, the needle groove 72 can be inserted into a thin needle for fixing on a wooden or other rough plane, and the magnet groove 73 can be used for placing a magnet for fixing on the surface of an iron object.
As shown in fig. 8, the center holder is made of transparent material, so that the alignment of the center mark and the center point is facilitated, and the three patterns of the center holder are a sucker pattern a, a fine needle pattern b and a magnet pattern c respectively.
When the regular polygon drawing rule is adopted to draw regular polygons or measure, the method comprises the following steps:
1) Firstly, determining the geometric center of the drawn regular polygon, selecting a center fixer 7 with a proper pattern, moving the center fixer 7 to enable the center position of a center mark to coincide with the geometric center of the drawn regular polygon, then pressing the fixing position of the center fixer 7, calculating the center angle of the regular polygon, rotating an upper pointer 2 until the angle of an angle ruler 11 of the lower pointer 1 corresponds to the angle of the center angle of the regular polygon, screwing up a threaded cover 3, then moving one side of a side ruler 4 with a chamfer to scales of the upper pointer 2 and the lower pointer 1, corresponding to the radius length of a circle circumscribed by the drawn regular polygon, screwing up a knurled nut 6, penetrating through the center fixer 7, drawing a first side line along the chamfer edge 42 of the side ruler 4, rotating other parts by taking the center fixer 7 as the circle center until the intersection point of the side ruler 4 and the lower pointer 1 (the extension line of the upper pointer 2) coincides with the drawn side line, and drawing a second side line, and so on, and drawing each side of the regular polygon completely as shown in a figure 9;
2) According to the utility model, the angle on the plane can be directly measured by using the lower pointer angle ruler 11 and the upper pointer 2, or the angle taking work on the wall body included angle or the stair inclined plane can be performed by using the lower pointer 1 and the side length ruler 4 after the square head bolt 5 and the knurled nut 6 for fixing the upper pointer 2 are taken down, when the inner side edges of the lower pointer 1 and the side length ruler 4 are parallel to two measuring surfaces in use, the square head bolt 5 and the knurled nut 6 for fixing the lower pointer 1 are fastened, the upper pointer 2 is rotated until the edge of the side length ruler 43 is parallel to the scale line of the upper pointer 2, at the moment, the side length ruler 4 is perpendicular to the upper pointer 2, and the included angle 'x' between the upper pointer 2 and the lower pointer 1 can be obtained by the reading of the upper pointer 2 on the lower pointer angle ruler 11, so that the taken angle is '90-x';
3) According to the utility model, the length of an object can be directly measured by utilizing the graduated scales on the side length ruler 4, the upper pointer 2 and the lower pointer 1, the upper pointer 2 can be rotated to the 180-degree position shown by the lower pointer 1, the measured value is obtained by adding the readings of the upper pointer 2 (the lower pointer 1), when a longer object needs to be measured, the side length ruler 4 and the upper pointer 2 (the lower pointer 1) can be fixed on a straight line by using the two square-head bolts 5 and the knurled nuts 6, the side length ruler 4 is enabled to coincide with the graduation of the upper pointer 2 (the lower pointer 1) by sliding the side length ruler 4, and the measured length is obtained by performing addition and subtraction operation on the graduation readings of the side length ruler 4 and the graduation readings of the upper pointer 2 (the lower pointer 1).
It should be noted that the foregoing description is only a preferred embodiment of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it should be understood that modifications, equivalents, improvements and modifications to the technical solution described in the foregoing embodiments may occur to those skilled in the art, and all modifications, equivalents, and improvements are intended to be included within the spirit and principle of the present utility model.
Claims (6)
1. A regular polygon drawing rule comprises a lower pointer, an upper pointer, a side length rule, a thread cover, a square head bolt, a knurled nut and a center fixer, wherein the upper pointer of the lower pointer is connected through a threaded hollow cylinder, the thread cover is fastened, a side length rule chute is placed in the head of the square head bolt, a square head bolt screw rod part penetrates through a strip-shaped hole of the side length rule, the lower pointer or the upper pointer, the knurled nut is used for fastening the square head bolt and the side length rule, the lower pointer and the upper pointer, the lower pointer is marked with an angle scale, when the upper pointer rotates to be consistent with the degree of a central angle of a regular polygon to be drawn, the thread cover is rotated to fix the angle of the upper pointer and the lower pointer, the side length scale, the upper pointer and the lower pointer slide the side length scale, the side length scale is enabled to be consistent with the length scale of the upper pointer and the lower pointer and correspond to the radius of the regular polygon to be drawn, the square center of the square center fixer is fastened, the hollow cylinder of the thread of the lower pointer is enabled to penetrate through the center fixer, the center fixer along the center line, the first side length scale is rotated to be coincident with the center line of the regular polygon or the upper line of the regular polygon to be drawn, and the circle is drawn with the center line of the regular polygon, and the circle is drawn completely coincident with the center line of the second side line or the regular polygon is drawn.
2. The regular polygon drawing rule according to claim 1, wherein the lower pointer comprises a strip-shaped graduated scale and a fan-shaped angle scale, the graduated scale is provided with a strip-shaped hole, length scales are marked on two sides of the strip-shaped hole, a threaded hollow cylinder for fixing the upper pointer and the threaded cover is arranged on the lower pointer, the circle center of the threaded hollow cylinder coincides with the zero scale position of the length scale and the fan-shaped circle center position of the angle scale, angle scales are marked on the outer side of the angle scale, the upper surface of the lower pointer graduated scale is flush with the upper surface of the upper pointer graduated scale, and one side edge of the lower surface of the lower pointer is chamfered.
3. The regular polygon drawing rule according to claim 1, wherein the upper pointer comprises a fixed circular ring, a strip-shaped hole and a graduated scale, the strip-shaped hole is formed in the graduated scale, length scales are marked on two sides of the strip-shaped hole, the circle center of the fixed circular ring coincides with the zero scale position of the length scales, and the edge of one side of the lower surface of the upper pointer is chamfered.
4. The regular polygon drawing rule according to claim 1, wherein the side length rule comprises a graduated rule, a bar hole and a chute, the bar hole is formed in the graduated rule, distance scales are marked on two sides of the bar hole, the measuring mode of the scales is that the center of the graduation diverges, namely, the middle part of the graduated rule is a zero scale, the chute is located below the bar hole and is rectangular, and one side edge of the upper surface of the side length rule is chamfered.
5. The regular polygon drawing rule according to claim 1, wherein the screw cap comprises an upper cap, a through hole and screw threads, wherein the upper cap is higher than the lower pointer screw thread hollow cylinder in inner height, and is provided with internal screw threads which can rotate onto the screw thread hollow cylinder to compress the upper pointer and the lower pointer, and the upper cap is provided with the through hole for placing the center fixing device.
6. The regular polygon drawing rule according to claim 1, wherein the center holder is cylindrical in appearance, transparent rigid materials are selected and grooved, the center holder comprises a suction disc groove, a needle groove and a magnet groove, a center mark is arranged in the center of the suction disc groove, a straight head suction disc can be placed in the suction disc groove, a thin needle can be inserted into the needle groove, and a magnet can be placed in the magnet groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420030106.5U CN222157047U (en) | 2024-01-05 | 2024-01-05 | Regular polygon drawing rule |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420030106.5U CN222157047U (en) | 2024-01-05 | 2024-01-05 | Regular polygon drawing rule |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222157047U true CN222157047U (en) | 2024-12-13 |
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ID=93792205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420030106.5U Active CN222157047U (en) | 2024-01-05 | 2024-01-05 | Regular polygon drawing rule |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222157047U (en) |
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2024
- 2024-01-05 CN CN202420030106.5U patent/CN222157047U/en active Active
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