CN212098163U

CN212098163U - Mathematics drawing board

Info

Publication number: CN212098163U
Application number: CN202020605226.5U
Authority: CN
Inventors: 王利方
Original assignee: Luoyang Vocational College of Science and Technology
Current assignee: Luoyang Vocational College of Science and Technology
Priority date: 2020-04-21
Filing date: 2020-04-21
Publication date: 2020-12-08
Anticipated expiration: 2030-04-21

Abstract

The utility model belongs to the technical field of mathematical drawing, in particular to a mathematical drawing board, which comprises two sleeves which are mutually sleeved in a sliding way, a regulating cavity is sleeved outside the sleeves, the top wall and the bottom surface of the regulating cavity are respectively provided with a first perforation, a first perforation internal thread on the bottom surface of the regulating cavity is connected with a plug connector, the plug connector is connected with a turntable through a support rod, the turntable is positioned above the regulating cavity, the axial surface of the turntable is parallel to the top wall of the regulating cavity and is larger than the axial surface of the first perforation, the support rod is connected with the turntable through a bearing in a sliding way, the support rod is adjacent to the outer side wall of the sleeve, the end parts of the two sleeves are respectively provided with a fixed block, the lower surface of the fixed block is covered with a magnet layer, a plurality of through holes for inserting chalks are arranged above the sleeves, two detachable clamping rods are arranged, the functions are more, and the structure is simple.

Description

Mathematics drawing board

Technical Field

The utility model belongs to the technical field of the mathematics drawing, concretely relates to mathematics drawing board.

Background

In the first-line teaching process of mathematics, a teacher needs to draw pictures on a blackboard to demonstrate specific structures for students, when drawing straight lines, the teacher needs to use a corresponding ruler to draw pictures, when drawing circles, large compasses are needed to draw pictures, especially when drawing ellipses, an ellipse drawing tool needs to be used, when the drawing tools are used alternately, the drawing tools are too troublesome, and before classes, the teacher needs to carry the teaching tools.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a portable, the function is more, simple structure's mathematics drawing board.

In order to solve the technical problem, the utility model discloses a technical scheme as follows:

a mathematical drawing board comprises a first sleeve and a second sleeve, wherein one end of the first sleeve is sleeved in one end of the second sleeve in a sliding manner, the diameter of the axial surface of the first sleeve is smaller than that of the axial surface of the second sleeve, a first retaining ring is sleeved outside the outer side wall of one end of the first sleeve, a second retaining ring is sleeved inside the inner side wall of one end of the second sleeve, the second retaining ring is positioned between the outer side wall of the first sleeve and the inner side wall of the second sleeve, the second retaining ring is contacted with the outer side wall of the first sleeve, an adjusting cavity is sleeved on one end of the second sleeve, the adjusting cavity is in a cuboid shape, the top wall and the bottom surface of the adjusting cavity are respectively provided with a first perforation, a fixing ring is arranged on the first perforation on the bottom surface, the fixing ring is positioned in the adjusting cavity, the axial surface of the fixing ring is parallel to the bottom surface, a detachable plug-in ring is arranged in the fixing ring, the lower opening of the plug-, the fixing plate is positioned below the adjusting cavity, the plate surface of the fixing plate is larger than the axial surface of the first through hole, the inner side wall of the fixing ring is provided with an internal thread, the outer side wall of the inserting ring is provided with an external thread matched with the internal thread of the fixing ring, the upper plate surface of the fixing plate is fixedly connected with the turntable through a supporting rod, the turntable is positioned above the adjusting cavity, the axial surface of the turntable is parallel to the top wall of the adjusting cavity and is larger than the axial surface of the first through hole, the supporting rod is in sliding connection with the turntable through a bearing, the supporting rod is adjacent to the outer side wall of the second sleeve, the other ends of the first sleeve and the second sleeve are respectively provided with a fixing block, the lower surface of the fixing block is covered with a magnet layer, a plurality of first through holes for inserting chalks are arranged above the first sleeve, a plurality of, the first clamping rod and the second clamping rod are connected with each other through a slide way made of cloth or soft plastic, a slide block matched with the slide way in use is arranged on the slide way, the slide block is fixedly connected with a chalk fixing device, and the chalk fixing device is located among the first sleeve, the second sleeve and the slide way.

Furthermore, the side walls of the first clamping rod and the second clamping rod are provided with clamping plates, the plate surfaces of the clamping plates are perpendicular to the side walls of the first clamping rod and the second clamping rod, a plurality of first through holes are communicated through first openings for the clamping plates to be inserted, a plurality of second through holes are communicated through second openings for the clamping plates to be inserted, the upper part of the first clamping rod is connected with one end of a slideway through a connecting wire, the upper part of the second clamping rod is connected with the other end of the slideway through a connecting wire, the slideway comprises a first fixing layer, a second fixing layer, a first fixing rod and a second fixing rod, the first fixing layer and the second fixing layer are rectangles with the same area and shape, the first fixing layer and the second fixing layer are overlapped and fixedly connected at the edge, one short edge of the first fixing layer and the second fixing layer is fixedly connected with the side wall of the first fixing rod, the first clamping rod is fixedly connected with the first fixing rod through the connecting wire, the other short edge of the first fixing layer and the second fixing layer is fixedly connected with the side wall of, the second clamping rod is fixedly connected with the second fixing rod through a connecting line, a second opening is formed in the second fixing layer, the second opening is in a strip shape, the second opening is arranged along the length direction of the second fixing layer, a sliding block is arranged between the first fixing layer and the second fixing layer, the sliding block is a cylindrical block, the axial surface of the cylindrical block is larger than the width of the second opening, the cylindrical block is connected with a chalk fixing device through a connecting rod, the chalk fixing device is a buckle cylinder for inserting chalk, the buckle cylinder is located on the outer side of a slideway, the length direction of the buckle cylinder is the same as the width direction of the second fixing layer, a third through hole is formed in the side wall of the buckle cylinder, a screw is connected with the third through hole through threads, and the buckle cylinder is located between the first sleeve, the second sleeve.

Furthermore, scales are respectively arranged on the first sleeve and the second sleeve.

Furthermore, the upper surface of the turntable is covered with a magnet layer.

Furthermore, the rubber layer covers the first through hole, the second through hole, the first opening and the second opening.

Further, the first sleeve and the second sleeve are cylinders.

Furthermore, the fixing block is a cuboid block, and the lower surface of the fixing block is covered with a magnet layer.

Further, the length of first kelly and second kelly be greater than the telescopic axial plane diameter of second, first kelly upper end is first fixture block, first kelly lower extreme is first fixture block, first upper fixture block is cylindrical with first fixture block, the axial plane diameter of first upper fixture block and first fixture block is greater than the axial plane diameter at first kelly middle part, the upper end of second kelly is fixture block on the second, the lower extreme of second kelly is fixture block under the second, fixture block is cylindrical under fixture block and the second on the second, the axial plane diameter of fixture block is greater than the axial plane diameter at second kelly middle part under fixture block and the second on the second.

Furthermore, a rubber pad is arranged at the end part of the screw.

The utility model discloses use one set of teaching aid, can draw the straight line, it is circular, geometric figure such as ellipse, first sleeve and second sleeve be for the structure that can stretch out and draw back, can conveniently carry, in addition, the utility model discloses be equipped with the carousel to be equipped with the magnet layer on the carousel, still be equipped with the magnet layer on the fixed block and prevent to produce the displacement at mapping in-process teaching aid, thereby avoid influencing the mapping effect, convenient mapping.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a positional relationship diagram of the first retainer ring 3 and the second retainer ring 4;

FIG. 3 is a diagram showing the positional relationship between the turntable and the support rod;

FIG. 4 is a schematic view of the structure of the adjustment chamber;

FIG. 5 is a schematic structural view of the first and second clamping bars;

FIG. 6 is a schematic view of the structure of the slide;

FIG. 7 is a schematic view of the structure of the snap cylinder and the third through hole

Fig. 8 is a schematic scale line view of the first sleeve.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

A mathematical drawing board as shown in fig. 1-8, which comprises a first sleeve 1 and a second sleeve 2, wherein one end of the first sleeve 1 is slidably sleeved in one end 2 of the second sleeve, the diameter of the axial surface of the first sleeve 1 is smaller than that of the axial surface of the second sleeve 2, a first baffle ring 3 is fixedly sleeved outside the outer side wall of one end of the first sleeve 1, a second baffle ring 4 is fixedly sleeved inside the inner side wall of one end of the second sleeve 2, the second baffle ring 4 is positioned between the outer side wall of the first sleeve 1 and the inner side wall of the second sleeve 2, the second baffle ring 4 is contacted with the outer side wall of the first sleeve 1, an adjusting cavity 5 is sleeved on one end of the second sleeve 2, the adjusting cavity 5 is cuboid-shaped, the top wall and the bottom surface of the adjusting cavity 5 are respectively provided with a first through hole 6, a fixing ring 7 is arranged on the first through hole 6 on the bottom surface, the fixing ring 7 is positioned in the adjusting cavity 5, the axial surface of the fixing ring 7 is, the lower opening of the inserting ring 8 is fixedly connected with a fixing plate 9, the surface of the fixing plate 9 is parallel to the axial surface of the inserting ring 8, the fixing plate 9 is positioned below the adjusting cavity 5, the surface of the fixing plate 9 is larger than the axial surface of the first through hole 6, the inner side wall of the fixing ring 7 is provided with an internal thread, the outer side wall of the inserting ring 8 is provided with an external thread matched with the internal thread of the fixing ring 7, the upper surface of the fixing plate 9 is fixedly connected with a rotary disc 11 through a supporting rod 10, the supporting rod 10 penetrates through the first through hole 6, the rotary disc 11 is positioned above the adjusting cavity 5, the axial surface of the rotary disc 11 is parallel to the top wall of the adjusting cavity 5 and is larger than the axial surface of the first through hole 6, the supporting rod 10 is in sliding connection with the rotary disc 11 through a bearing, the supporting rod 10 is adjacent to the outer side wall of the second sleeve 2, the other ends of the first sleeve 1 and the, six second through holes 15 for inserting the chalk are formed in the upper portion of the second sleeve 2, a detachable first clamping rod 16 is arranged in the first through hole 14, a detachable second clamping rod 17 is arranged in the second through hole 15, a slide 18 made of cloth or soft plastic is connected between the first clamping rod 16 and the second clamping rod 17, a sliding block 19 matched with the slide 18 in use is arranged on the slide 18, and the sliding block 19 is fixedly connected with a chalk fixing device 20. The side walls of the first clamping rod 16 and the second clamping rod 17 are provided with clamping plates 21, the plate surfaces of the clamping plates 21 are perpendicular to the side walls of the first clamping rod 16 and the second clamping rod 17, six first through holes 14 are communicated through first openings 22 into which the clamping plates 21 can be inserted, six second through holes 15 are communicated through second openings 23 into which the clamping plates 21 can be inserted, the upper part of the first clamping rod 16 is connected with one end of a slideway 18 through a connecting line 24, the upper part of the second clamping rod 17 is connected with the other end of the slideway 18 through the connecting line 24, the slideway 18 comprises a first fixing layer 181, a second fixing layer 182, a first fixing rod 183 and a second fixing rod 184, the first fixing layer 181 and the second fixing layer 182 are rectangular bodies with the same area and shape, the first fixing layer 181 is overlapped with the second fixing layer 182 and fixedly connected with the edges, one short side edge of the first fixing layer 181 is fixedly connected with the side wall of the second fixing layer 182, the first clamping rod 16 is fixedly connected with a first fixing rod 183 through a connecting line 24, the other short side of the first fixing layer 181 and the second fixing layer 182 is fixedly connected with the side wall of a second fixing rod 184, the second clamping rod 17 is fixedly connected with the second fixing rod 184 through a connecting line 24, a second opening 23 is arranged on the second fixing layer 182, the second opening 23 is strip-shaped, the second opening 23 is arranged along the length direction of the second fixing layer 182, a sliding block 19 is arranged between the first fixing layer 181 and the second fixing layer 182, the sliding block 19 is a cylindrical block, the axial surface of the cylindrical block is larger than the width of the second opening 23, the cylindrical block is connected with a chalk fixing device 20 through a connecting rod 25, the chalk fixing device 20 is a clamping cylinder for inserting chalks, the clamping cylinder is positioned outside the slideway 18, the length direction of the clamping cylinder is the same as the width direction of the second fixing layer 182, a third through hole 26 is arranged on the side wall of the, a third through hole 26 is threaded with a screw 28 and a snap cylinder is located between the first sleeve 1, the second sleeve 2 and the slideway 18. The first sleeve 1 and the second sleeve 2 are respectively provided with scales. The upper surface of the turntable 11 is covered with a magnet layer 13. The first through hole 14, the second through hole 15, the first opening 22 and the second opening 23 are covered with rubber layers. The first sleeve 1 and the second sleeve 2 are cylinders. The fixed block 12 is a cuboid block, and the lower surface of the fixed block 12 is covered with a magnet layer 13. The lengths of the first clamping rod 16 and the second clamping rod 17 are greater than the diameter of the axial surface of the second sleeve 2, the upper end of the first clamping rod 16 is provided with a first upper clamping block 161, the lower end of the first clamping rod 16 is provided with a first lower clamping block 162, the first upper clamping block 161 and the first lower clamping block 162 are cylindrical, the diameter of the axial surface of the first upper clamping block 161 and the first lower clamping block 162 is greater than the diameter of the axial surface of the middle part of the first clamping rod 16, the upper end of the second clamping rod 17 is provided with a second upper clamping block 171, the lower end of the second clamping rod 17 is provided with a second lower clamping block 172, the second upper clamping block 171 and the second lower clamping block 172 are cylindrical, and the diameter of the axial surface of the second upper clamping block 171 and the second lower clamping block 172 is greater than the diameter of the axial surface of the middle part. The end of the screw 28 is provided with a rubber pad 27.

When the insert ring 8 is completely overlapped with the fixing ring 7, the lower surface of the fixing plate 9 is flush with the lower surface of the magnet layer 13 of the fixing block 12. The catch cylinder is always located between the first sleeve 1, the second sleeve 2 and the slide 18.

When the chalk is used, if a straight line needs to be drawn, the fixed block 12 on the first sleeve 1 and the fixed block 12 on the second sleeve 2 are adsorbed on a blackboard, and a chalk is used for drawing along the scale marks on the first sleeve 1 or the second sleeve 2;

if a circle needs to be drawn, inserting chalk into the first through hole 14 or the second through hole 15, in the embodiment, inserting the chalk into the second through hole 15, adsorbing the magnet layer 13 of the rotary table 11 onto the blackboard, then rotating the plug board, and adjusting the interval between the rotary table 11 and the adjusting cavity 5, so that the chalk is adjusted to be in contact with the blackboard, because the rotary table 11 and the support rod 10 rotate through the bearing, the chalk inserted into the second through hole 15 can rotate along the rotary table 11, so that a circle is drawn by taking the rotary table 11 as the center of the circle, wherein the position of inserting the chalk into the second through hole 15 can be adjusted, and the radius of the circle drawn by the chalk can be estimated;

if the ellipse needs to be drawn, the first clamping rod 16 and the second clamping rod 17 are inserted into the first through hole 14 or the second through hole 15, or one is inserted into the first through hole 14 and the other is inserted into the second through hole 15, the magnet layer 13 at the lower part of the fixed block 12 is adsorbed on the blackboard, the chalk is clamped in the chalk clamping cylinder, the two ends of the chalk extend out of the two ends of the clamping cylinder, the screw 28 and the rubber pad 27 are rotated to be abutted against the chalk, the chalk is fixed, when the upper half part of the ellipse needs to be drawn, the clamping cylinder is only rotated along the slide way 18, when the lower half part of the ellipse needs to be drawn, the clamping cylinder is always kept between the first sleeve 1, the second sleeve 2 and the slide way 18, when the length of the slide way 18 needs to be adjusted, the connecting wire 24 only needs to be wound on the first clamping rod 16 and the second clamping rod 17, and when the first through hole 14 or the second through hole 15 is inserted, the card 21 is inserted into the third opening and the rotation of the first card 21 and the second card 21 is weaved. When not in use, the first sleeve 1 is only placed in the second sleeve 2, thereby being convenient for carrying.

Claims

1. A mathematical drawing board is characterized by comprising two sleeves which are sleeved with each other in a sliding manner, an adjusting cavity is sleeved outside the sleeves, the top wall and the bottom surface of the adjusting cavity are respectively provided with a first through hole, a first through hole internal thread on the bottom surface of the adjusting cavity is connected with a plug connector, the plug connector is connected with a rotary disc through a support rod, the rotary disc is positioned above the adjusting cavity, the axial surface of the rotary disc is parallel to the top wall of the adjusting cavity and is larger than that of the first through hole, the support rod is connected with the rotary disc through a bearing in a sliding manner and is adjacent to the outer side wall of the sleeves, the end parts of the two sleeves are respectively provided with a fixed block, the lower surface of the fixed block is covered with a magnet layer, a plurality of through holes for inserting chalks are arranged above the sleeves, two detachable clamping rods are arranged in the through holes, a slide way made of cloth, the chalk fixing device is positioned between the sleeve and the slideway.

2. The drawing board according to claim 1, wherein the two sleeves slidably sleeved with each other are a first sleeve and a second sleeve, one end of the first sleeve is slidably sleeved in one end of the second sleeve, the diameter of the axial surface of the first sleeve is smaller than that of the axial surface of the second sleeve, the outer side wall of one end of the first sleeve is fixedly sleeved with a first retaining ring, the inner side wall of one end of the second sleeve is fixedly sleeved with a second retaining ring, the second retaining ring is located between the outer side wall of the first sleeve and the inner side wall of the second sleeve, the second retaining ring is in contact with the outer side wall of the first sleeve, an adjusting cavity is sleeved on one end of the second sleeve, the other ends of the first sleeve and the second sleeve are provided with fixing blocks, and the chalk fixing device is located between the first sleeve, the second sleeve and the slideway.

3. A mathematical drawing board according to claim 2, wherein a plurality of first through holes for inserting chalk are provided above the first sleeve, a plurality of second through holes for inserting chalk are provided above the second sleeve, a detachable first clamping rod is provided in the first through hole, a detachable second clamping rod is provided in the second through hole, and a slide made of cloth or soft plastic is connected between the first clamping rod and the second clamping rod.

4. The mathematics drawing board of claim 3, characterized in that, the regulation chamber be the cuboid shape, be equipped with solid fixed ring on the first perforation on the regulation chamber bottom surface, gu fixed ring is located the regulation intracavity and gu fixed ring's axial plane is parallel with the bottom surface, the plug connector includes the grafting ring, the lower open fixed connection fixed plate of grafting ring, the face of fixed plate is parallel with the axial plane of grafting ring, the face that the fixed plate is located regulation chamber below and fixed plate is greater than first fenestrate axial plane, gu be equipped with the internal thread on the fixed ring inside wall, be equipped with on the grafting ring lateral wall and use the external screw thread with solid fixed ring female thread fit, form solid fixed ring and the detachable construction who splices the ring, the last face of fixed plate passes through bracing piece fixed.

5. A mathematical drawing board as claimed in claim 4, wherein the side walls of the first and second clamping bars are provided with clamping plates, the surface of each clamping plate is perpendicular to the side walls of the first and second clamping bars, the first through holes are communicated with each other through first openings into which the clamping plates can be inserted, the second through holes are communicated with each other through second openings into which the clamping plates can be inserted, the upper portion of the first clamping bar is connected with one end of the slideway through a connecting line, the upper portion of the second clamping bar is connected with the other end of the slideway through a connecting line, the slideway comprises a first fixing layer, a second fixing layer, a first fixing rod and a second fixing rod, the first fixing layer and the second fixing layer are rectangles with the same area and shape, the first fixing layer and the second fixing layer are overlapped and fixedly connected at their edges, a short edge of the first fixing layer and the second fixing layer is fixedly connected with a side wall of the first fixing rod, the first clamping bar is fixedly connected with the first fixing rod through a connecting line, the other short side of the first fixing layer and the other short side of the second fixing layer are fixedly connected with the side wall of a second fixing rod, a second clamping rod is fixedly connected with the second fixing rod through a connecting line, a second opening is formed in the second fixing layer, the second opening is in a strip shape and is arranged along the length direction of the second fixing layer, a sliding block is arranged between the first fixing layer and the second fixing layer and is a cylindrical block, the axial surface of the cylindrical block is larger than the width of the second opening, the cylindrical block is connected with a chalk fixing device through the connecting rod, the chalk fixing device is a buckle cylinder for inserting chalk, the buckle cylinder is located on the outer side of a slideway, the length direction of the buckle cylinder is the same as the width direction of the second fixing layer, a third through hole is formed in the side wall of the buckle cylinder, a screw is connected in the third through hole in a threaded mode, and the buckle cylinder is located.

6. A mathematical drawing board according to claim 5, wherein the first and second sleeves are provided with graduations.

7. A mathematical drawing board according to claim 6, wherein the upper surface of the turntable is covered with a magnet layer, and the first through hole, the second through hole, the first opening and the second opening are covered with a rubber layer; the fixing block is a cuboid block.

8. A mathematical drawing board as claimed in claim 7, wherein the first and second sleeves are cylinders.

9. The mathematical drawing board as claimed in claim 8, wherein the first and second clamping bars have a length greater than the diameter of the axial surface of the second sleeve, the first upper clamping block is disposed at the upper end of the first clamping bar, the first lower clamping block is disposed at the lower end of the first clamping bar, the first upper clamping block and the first lower clamping block are cylindrical, the diameter of the axial surface of the first upper clamping block and the first lower clamping block is greater than the diameter of the axial surface of the middle portion of the first clamping bar, the second upper clamping block is disposed at the upper end of the second clamping bar, the second lower clamping block is disposed at the lower end of the second clamping bar, the diameter of the axial surface of the second upper clamping block and the second lower clamping block is cylindrical, and the diameter of the axial surface of the second upper clamping block and the second lower clamping block is greater than the diameter of the axial.

10. A mathematical drawing board according to claim 9, wherein the ends of the screws are provided with rubber pads.