CN207901969U - A kind of mathematics diagraph - Google Patents

Abstract

The utility model discloses a kind of mathematics diagraphs, including head rod, disk is installed on the left of the head rod, the front of the disk is equipped with the first scale, the top of the disk is equipped with the second connecting rod, and second connecting rod is connected by first rotating shaft with disk, and sliding slot is internally provided on the right side of the head rod, the sliding slot is internally provided with sliding block, and the top of the sliding block is equipped with strut.The mathematics diagraph, circle of different sizes can be drawn, pass through the cooperation of disk and the first scale, it is the angle that reference draws that angular dimension differs with the first scale, pass through the cooperation of connecting rod and head rod, pass through the cooperation of hollow stem and strut, pass through the cooperation of sliding block and sliding slot, sliding block drives strut to move left and right, and can be switched between the set square with 30-degree angle and 45 degree of angles, reduce the volume of diagraph, it is easy to carry, easy switching between tool, it is multiple functional, save time in classroom.

Description

A kind of mathematics diagraph

Technical field

The utility model is related to mathematics diagraph technical field, specially a kind of mathematics diagraph.

Background technology

Mathematics is a subject for studying the concepts such as quantity, structure, variation, space and information, is belonged in terms of certain angle In one kind of formal science, mathematics is exactly the science that research collection closes various structural relations, it is seen then that mathematics is abstract Section, and rigorous process is the key that mathematical abstractions, mathematics plays irreplaceable in development of human history and social life Effect, and study and research the essential basic tool of modern science and technology, currently, during mathematical education often Mapping explanation demonstration, especially geometry and function explanation, mapping on blackboard is needed to become important auxiliary explanation means, such as Application No. is 201520936566.5 patents, including compasses, ruler, protractor and folding rod, although the patent is to work of mapping Tool is combined, but the volume of diagraph is larger, and inconvenient to carry, the switching between tool is excessively complicated, wastes classroom Time.

Utility model content

The purpose of this utility model is to provide a kind of mathematics diagraphs, to solve mentioned above in the background art ask Topic.

To achieve the above object, the utility model provides the following technical solutions：A kind of mathematics diagraph, including the first connection Bar is equipped with disk on the left of the head rod, and the front of the disk is equipped with the first scale, and the top of the disk is set There are the second connecting rod, second connecting rod to be connected with disk by first rotating shaft, set inside the right side of the head rod There are sliding slot, the sliding slot to be internally provided with sliding block, the top of the sliding block is equipped with strut, and the strut passes through the second shaft and cunning Block is connected, and the first bull stick is equipped on the left of the inner wall of the sliding slot, and first bull stick runs through head rod, first bull stick Top mandril is installed, the bottom end of first bull stick is equipped with convex block, and the top outer wall of the strut is socketed with hollow stem, The hollow stem is connected by connecting rod with head rod by third shaft and the second connecting rod, second connecting rod, institute It states connecting rod by third shaft to be connected with the second connecting rod, the connecting rod is connected by the 4th shaft with head rod, described The front of connecting rod and hollow stem is respectively equipped with the second scale, and the right side of the head rod is equipped with groove, the groove it is interior Portion is equipped with chalk, and the top of the groove is equipped with bolt, and the bolt is connected with head rod screw thread.

Preferably, the top of second connecting rod is equipped with sucker, and the sucker is internally provided with baffle, and the baffle is logical Cross the second bull stick and the second connecting rod, the junction of second bull stick and the second connecting rod is equipped with bearing, and described second connects The top of extension bar is equipped with pressing plate.

Preferably, the front center position of the head rod is equipped with magnetic stripe.

Preferably, the head rod and the outer wall of the second connecting rod are respectively equipped with burr.

Preferably, the inner wall bottom end of the groove is equipped with cushion block.

Compared with prior art, the utility model has the beneficial effects that：The mathematics diagraph passes through head rod and Two connecting rods coordinate, using the second connecting rod be the center of circle rotate head rod, circle of different sizes can be drawn, by disk with The cooperation of first scale is to pass through matching for connecting rod and head rod with reference to drawing the angle that angular dimension differs with the first scale Close, by the cooperation of hollow stem and strut, by the cooperation of sliding block and sliding slot, sliding block drive strut move left and right, can with It is switched between 30-degree angle and the set square at 45 degree of angles, reduces the volume of diagraph, it is easy to carry, between tool Easy switching, it is multiple functional, save time in classroom.

Description of the drawings

FIG. 1 is a schematic structural view of the utility model；

Fig. 2 is the head rod cross-sectional view of the structure of the utility model；

Fig. 3 is the sliding groove structure schematic diagram of the utility model；

Fig. 4 is the second connecting rod cross-sectional view of the structure of the utility model.

In figure：1, head rod, 2, disk, the 3, first scale, 4, first rotating shaft, the 5, second connecting rod, 6, sliding slot, 7, Sliding block, 8, strut, the 9, second shaft, the 10, first bull stick, 11, mandril, 12, convex block, 13, hollow stem, 14, third shaft, 15, Connecting rod, the 16, second scale, the 17, the 4th shaft, 18, groove, 19, chalk, 20, bolt, 21, sucker, 22, baffle, 23, pressure Plate, 24, bearing, the 25, second bull stick, 26, magnetic stripe, 27, burr, 28, cushion block.

Specific implementation mode

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work The every other embodiment obtained, shall fall within the protection scope of the present invention.

- 4 are please referred to Fig.1, the utility model provides a kind of technical solution：A kind of mathematics diagraph, including head rod 1, the left side of head rod 1 is equipped with disk 2, and the front of disk 2 is equipped with the first scale 3, and the first scale 3 is measurement angle Scale, the top of disk 2 is equipped with the second connecting rod 5, and the second connecting rod 5 is connected with disk 2 by first rotating shaft 4, is being mapped During need picture bowlder, the top of the second connecting rod 5 is positioned on the center of circle for the circle for needing picture, head rod is pulled 1 position holds disk 2 and carries out rotary picture circle, when needing picture to specify the angle of size, first draws a ray, first is connected The edge of extension bar 1 leans against on ray, pulls the position of the second connecting rod 5, the first scale 3 in alignment disk 2, along the second connection The edge of bar 5 is mapped, and the right side of head rod 1 is internally provided with sliding slot 6, and sliding slot 6 is internally provided with sliding block 7, sliding block 7 Top is equipped with strut 8, and strut 8 is connected by the second shaft 9 with sliding block 7, and the first bull stick 10 is equipped on the left of the inner wall of sliding slot 6, the One bull stick 10 runs through head rod 1, and the top of the first bull stick 10 is equipped with mandril 11, and the bottom end of the first bull stick 10 is equipped with convex Block 12, the top outer wall of strut 8 are socketed with hollow stem 13, and hollow stem 13 is by third shaft 14 and the second connecting rod 5, and second Connecting rod 5 is connected by connecting rod 15 with head rod 1, and connecting rod 15 is connected by third shaft 14 with the second connecting rod 5, even Bar 15 is connected by the 4th shaft 17 with head rod 1, and the front of connecting rod 15 and hollow stem 13 is respectively equipped with the second scale 16, Second scale 16 is the scale for measuring length, and teacher draws the straight line of designated length with reference to the second scale, needed during doing figure When using the set square with 30-degree angle, sliding block 7 is slided to the right end of sliding slot 6, at this time strut 8 and head rod 1 it Between oblique angle be 30 degree, when needing to use the set square at 45 degree of angles of band during doing figure, by convex block 12 rotation nine Ten degree are pulling down, and sliding block 7 is slided to the left end of sliding slot 6, push up convex block 12, and convex block 12 pushes the first bull stick 10 and top Sliding block 6 is blocked and cannot be moved right by bar 11, the first bull stick 10, rotates convex block 12, and convex block 12 drives the first bull stick 10 and mandril 11 rotate together, and the top of strut 8 is withdrawn in hollow stem 13, and the oblique angle between strut 8 and head rod 1 is 40 at this time Five degree, the right side of head rod 1 is equipped with groove 18, and groove 18 is internally provided with chalk 19, and the top of groove 18 is equipped with bolt, 20 are clamped chalk 19 by rotating bolt 20, and bolt 20 is connected with 1 screw thread of head rod, will even after End-of-Course Bar 15 and hollow stem 13 are removed from third shaft 14, are hung over again in first rotating shaft 4, according to the correlation properties of triangle, one A angle is the triangle of 30-degree angle, and the length of bevel edge is equal to two times of corresponding right-angle side, and an angle is 45 degree of angles Right angled triangle, waist is equal, and the length of connecting rod 15 is just equal to the distance that the 4th shaft 17 arrives first rotating shaft 4, the second connection The top of bar 5 is equipped with sucker 21, and sucker 21 can be inhaled on blackboard, and sucker 21 is internally provided with baffle 22, and baffle 22 passes through second The junction of bull stick 25 and the second connecting rod 5, the second bull stick 25 and the second connecting rod 5 is equipped with bearing 24, and the reduction of bearing 24 rubs Power is wiped, the top of the second connecting rod 5 is equipped with pressing plate 23, presses pressing plate 23, and pressing plate 23 presses sucker 21, makes sucker 21 more Securely, facilitate picture to justify, reduce difficulty when mapping, the front center position of head rod 1 is equipped with magnetic stripe 26, can be adsorbed on On blackboard, facilitate use the next time of teacher, the outer wall of head rod 1 and the second connecting rod 5 is respectively equipped with burr 27, increase with Frictional force between finger prevents from drawing bowlder, and rubber sleeve causes the error drawn, and the inner wall bottom end of groove 18 is equipped with cushion block 28, increase the contact between chalk 19, while also being protected to chalk 19, prevents from being crushed by bolt 20.

On mathematics class, teacher in teaching process in mapping explanation demonstration on blackboard, say by especially geometry and function Solution, picture bowlder is needed during mapping, the top of the second connecting rod 5 is positioned on the center of circle for the circle for needing picture, is pulled The position of head rod 1 holds disk 2 and carries out rotary picture circle, when needing picture to specify the angle of size, first draws one and penetrates Line leans against at the edge of head rod 1 on ray, pulls the position of the second connecting rod 5, the first scale in alignment disk 2 3, it maps along the edge of the second connecting rod 5, it, will when needing to use the set square with 30-degree angle during doing figure Sliding block 7 slides to the right end of sliding slot 6, and the oblique angle between strut 8 and head rod 1 is 30 degree at this time, in the process for doing figure It is middle when needing to use the set square at 45 degree of angles of band, the rotation of convex block 12 is being pulled down for 90 degree, sliding block 7 is slided into sliding slot 6 Left end, push up convex block 12, convex block 12 pushes the first bull stick 10 and mandril 11, the first bull stick 10 to block sliding block 6 not It can move right, rotate convex block 12, convex block 12 drives the first bull stick 10 and mandril 11 to rotate together, and sky is withdrawn on the top of strut 8 In core bar 13, the oblique angle between strut 8 and head rod 1 is 45 degree at this time, after End-of-Course, by 15 He of connecting rod Hollow stem 13 is removed from third shaft 14, is hung over again in first rotating shaft 4, by head rod 1 and the second connecting rod 5 and is arrived Together.

In the description of the present invention, it should be understood that term " coaxial ", " bottom ", " one end ", " top ", " in The orientation of the instructions such as portion ", " other end ", "upper", " side ", " top ", "inner", " front ", " center ", " both ends " or position are closed System is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing the present invention and simplifying the description, rather than Indicate or imply that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore cannot It is construed as a limitation of the present invention.

In the present invention unless specifically defined or limited otherwise, term " installation ", " setting ", " connection ", " Gu Calmly ", the terms such as " being screwed on " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral； It can be mechanical connection, can also be electrical connection；It can be directly connected, can also indirectly connected through an intermediary, it can be with It is the interaction relationship of the connection or two elements inside two elements, unless otherwise restricted clearly, for this field For those of ordinary skill, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is appreciated that can these embodiments be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaiied Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.

Claims (5)

1. a kind of mathematics diagraph, including head rod (1), it is characterised in that：It installs in the left side of the head rod (1) There are disk (2), the front of the disk (2) to be equipped with the first scale (3), the top of the disk (2) is equipped with the second connecting rod (5), second connecting rod (5) is connected by first rotating shaft (4) with disk (2), inside the right side of the head rod (1) Equipped with sliding slot (6), the sliding slot (6) is internally provided with sliding block (7), and the top of the sliding block (7) is equipped with strut (8), the branch Bar (8) is connected by the second shaft (9) with sliding block (7), and the first bull stick (10) is equipped on the left of the inner wall of the sliding slot (6), described First bull stick (10) runs through head rod (1), and the top of first bull stick (10) is equipped with mandril (11), described first turn The bottom end of bar (10) is equipped with convex block (12), and the top outer wall of the strut (8) is socketed with hollow stem (13), the hollow stem (13) by third shaft (14) and the second connecting rod (5), second connecting rod (5) passes through connecting rod (15) and head rod (1) it is connected, the connecting rod (15) is connected by third shaft (14) with the second connecting rod (5), and the connecting rod (15) passes through the 4th Shaft (17) is connected with head rod (1), and the front of the connecting rod (15) and hollow stem (13) is respectively equipped with the second scale (16), the right side of the head rod (1) is equipped with groove (18), and the groove (18) is internally provided with chalk (19), described The top of groove (18) is equipped with bolt (20), and the bolt (20) is connected with head rod (1) screw thread.

2. a kind of mathematics diagraph according to claim 1, it is characterised in that：The top of second connecting rod (5) is set There are sucker (21), the sucker (21) to be internally provided with baffle (22), the baffle (22) passes through the second bull stick (25) and second The junction of connecting rod (5), second bull stick (25) and the second connecting rod (5) is equipped with bearing (24), second connection The top of bar (5) is equipped with pressing plate (23).

3. a kind of mathematics diagraph according to claim 1, it is characterised in that：In the front of the head rod (1) Heart position is equipped with magnetic stripe (26).

4. a kind of mathematics diagraph according to claim 1, it is characterised in that：The head rod (1) and second connects The outer wall of extension bar (5) is respectively equipped with burr (27).

5. a kind of mathematics diagraph according to claim 1, it is characterised in that：It installs the inner wall bottom end of the groove (18) There is cushion block (28).