CN210881474U

CN210881474U - Multifunctional teaching aid

Info

Publication number: CN210881474U
Application number: CN201921804001.6U
Authority: CN
Inventors: 王鑫
Original assignee: Shanghai Yixue Education Technology Co Ltd
Current assignee: Shanghai Squirrel Classroom Artificial Intelligence Technology Co Ltd
Priority date: 2019-10-24
Filing date: 2019-10-24
Publication date: 2020-06-30
Anticipated expiration: 2029-10-24

Abstract

The utility model belongs to the technical field of teaching aids, in particular to a multifunctional teaching aid, which comprises a sucker and a ruler; one end of the ruler is supported on the sucker through a shaft, and the ruler can rotate along the circumferential direction of the outer edge of the sucker; the ruler is provided with a slideway, the slideway is arranged along the length direction of the ruler, a sliding block which can move along the slideway is arranged on the slideway, and a mounting hole for mounting a chalk is arranged on the sliding block; the suction cup is located on the back side of the straightedge and one aperture of the mounting hole is located on the back side of the straightedge. The utility model discloses have two kinds of functions of ruler and compasses, and can not harm the blackboard when using the compasses function, the modern design, simple structure, the practicality is strong.

Description

Multifunctional teaching aid

Technical Field

The utility model belongs to the technical field of teaching aid, especially, relate to a teaching aid with ruler and compasses function.

Background

Mathematics mr is at the teaching in-process, often need draw various geometric figure on the blackboard, often can use ruler and compasses, but current compasses mainly constitute with two landing legs, the free end of one of them landing leg has the needle, the free end of another landing leg has the sleeve of cartridge chalk, because the blackboard is laid along vertical face, need be 90 contained angles of controlling with the blackboard when compasses draw the circular arc, it is inconvenient when adopting this kind of traditional compasses to draw the circular arc, and the needle on the compasses damages the blackboard easily moreover.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to the not enough among the above-mentioned prior art, provide a multi-functional teaching aid, have two kinds of functions of ruler and compasses, can not damage the blackboard when just using the compasses function.

In order to solve the technical problem, the utility model discloses a technical scheme is: the multifunctional teaching tool comprises a sucker and a ruler; one end of the ruler is supported on the sucker through a shaft, and the ruler can rotate along the circumferential direction of the outer edge of the sucker; the ruler is provided with a slideway, the slideway is arranged along the length direction of the ruler, a sliding block which can move along the slideway is arranged on the slideway, and a mounting hole for mounting a chalk is arranged on the sliding block; the suction cup is located on the back side of the straightedge and one aperture of the mounting hole is located on the back side of the straightedge.

In the multifunctional teaching aid, the shaft is vertical to the sucker, and one end of the shaft is fixed at the center of the sucker; a plurality of angle scale marks are uniformly distributed along the circumferential direction of the sucker; the ruler is provided with a hollow structure, part or all of the hollow structure is positioned in front of the angle scale mark of the sucker, and the angle scale mark can be seen through the hollow structure; an angle pointer used for pointing to the angle scale marks is arranged in the hollow structure, and the angle pointer is fixed on the ruler.

In the multifunctional teaching aid, the mounting hole is a through hole, two orifices of the mounting hole are respectively a large orifice and a small orifice, and the aperture of the large orifice is larger than that of the small orifice; the inner wall of the mounting hole is made of elastic materials, and a plurality of bulges are distributed on the inner wall of the mounting hole.

Above-mentioned multi-functional teaching aid, the sliding block is kept away from one side of sucking disc and is installed a guide arm, the extending direction of guide arm along the slide is laid, the one end of guide arm stretches out to the outside that sucking disc one end was kept away from to the ruler from the slide.

Above-mentioned multi-functional teaching aid, fixed block and jackscrew have been laid to the one end that the sucking disc was kept away from to the ruler, the both sides at the guide arm are fixed respectively to fixed block and jackscrew, the fixed block contacts with the guide arm, the end of jackscrew is towards the guide arm.

Above-mentioned multi-functional teaching aid, the lug has been laid to the dorsal part of sliding block, the free end of lug is hemispherical.

Above-mentioned multi-functional teaching aid follows ruler length direction lays distance scale mark, the front side of sliding block lays the distance pointer that is used for directional distance scale mark.

Compared with the prior art, the utility model has the following advantage: when the ruler is used, one end of the ruler is fixed on the blackboard through the adsorption force of the sucker, the chalk is installed in the installation hole, the sliding block is moved to a proper position along the slide way, the ruler is rotated around the shaft, and the function of drawing an arc can be achieved.

The technical solution of the present invention is further described in detail by the accompanying drawings and examples.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a sectional view a-a in fig. 1.

Description of reference numerals:

1-a sucker; 2, a ruler; 3-axis;

4, a slideway; 5-a sliding block; 6, a hollow structure;

7-angle pointer; 8, mounting holes; 9-a guide rod;

10-top thread; 11-a fixed block; 12-thread bushing;

13-a bump; 14-distance pointer.

Detailed Description

As shown in fig. 1 and 2, the utility model comprises a sucker 1 and a ruler 2; one end of the ruler 2 is supported on the sucker 1 through the shaft 3, and the ruler 2 can rotate along the circumferential direction of the outer edge of the sucker 1; a slide way 4 is distributed on the ruler 2, the slide way 4 is distributed along the length direction of the ruler 2, a sliding block 5 which can move along the slide way 4 is distributed on the slide way 4, and a mounting hole 8 for mounting chalk is distributed on the sliding block 5; the suction cup 1 is located on the back side of the straightedge 2 and one of the openings of the mounting hole 8 is located on the back side of the straightedge 2.

In this embodiment, the shaft 3 is perpendicular to the suction cup 1, and one end of the shaft 3 is fixed at the center of the suction cup 1; a plurality of angle scale marks are uniformly distributed along the circumferential direction of the sucker 1; a hollow structure 6 is distributed on the ruler 2, the hollow structure 6 is partially positioned in front of the angle scale mark of the sucker 1, and the angle scale mark can be seen through the hollow structure 6; an angle pointer 7 used for pointing to the angle scale mark is arranged in the hollow structure 6, and the angle pointer 7 is fixed on the ruler 2. The angle pointer 7 points to different angle scale marks by rotating the ruler 2, so that a teacher can draw an arc by using an angle, an angle line and the like.

As shown in fig. 2, in this embodiment, the mounting hole 8 is a through hole, two orifices of the mounting hole 8 are a large orifice and a small orifice respectively, and an aperture of the large orifice is larger than an aperture of the small orifice; the inner wall of the mounting hole 8 is made of elastic materials, and a plurality of bulges are distributed on the inner wall of the mounting hole 8. In fact, the chalk is the thick structure of one end thinness mostly for easy writing, what adopted is the whole hole channel structure of mounting hole 8 is that the structure that suits with the chalk, through the inner wall with elastic material preparation hole to and lay a plurality of archs on the inner wall, can make the chalk insert when establishing in mounting hole 8, because the big clamping-force of protruding point contact formation, the chalk is difficult to remove, thereby realizes the fixed of chalk, so that the mr draws the use. The elastic material is rubber.

In this embodiment, a guide rod 9 is installed to one side of slider 5 that keeps away from sucking disc 1, guide rod 9 is laid along the extending direction of slide 4, the one end of guide rod 9 stretches out to the outside that sucking disc 1 one end was kept away from to ruler 2 from slide 4. The handle is installed from the one end that slide 4 stretches out to guide arm 9, utilizes handle pulling guide arm 9, can realize sliding block 5's removal, conveniently adjusts sliding block 5's position.

In this embodiment, fixed block 11 and jackscrew 10 have been laid to the one end that sucking disc 1 was kept away from to ruler 2, fixed block 11 and jackscrew 10 are fixed respectively in the both sides of guide arm 9, fixed block 11 and the contact of guide arm 9, the end of jackscrew 10 is towards guide arm 9. When actually drawing an arc, after the sliding block 5 is moved to a desired position through the guide rod 9, the jackscrew 10 is screwed, the jackscrew 10 is in threaded fit with the screw sleeve 12, the screw sleeve 12 is fixed on the ruler 2, the jackscrew 10 moves along with screwing, the end head of the jackscrew moves towards the guide rod 9, after the jackscrew moves for a certain distance, the guide rod 9 can be clamped by the jackscrew 10 and the fixed block 11, the position of the sliding block 5 is further fixed, and a teacher can conveniently draw the arc.

In this embodiment, the back side of the sliding block 5 is provided with a bump 13, and the free end of the bump 13 is hemispherical. The purpose of providing the projection 13 is to make the moving block disturbed by the reaction force of the blackboard to the chalk during drawing, so that by arranging the projection 13, one more supporting point can be provided for the slider 5, and the stability of the slider 5 can be increased. In this embodiment, the number of the protruding blocks 13 is two, and the two protruding blocks 13 are symmetrically arranged on two sides of the small hole opening of the mounting hole 8.

In this embodiment, follow 2 length direction of ruler lays apart the distance scale sign, the front side of sliding block 5 lays and is used for the distance pointer 14 of directional distance scale sign.

The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and the equivalent structure change of doing above embodiment the utility model discloses technical scheme's within the scope of protection.

Claims

1. The multifunctional teaching aid is characterized by comprising a sucker and a ruler; one end of the ruler is supported on the sucker through a shaft, and the ruler can rotate along the circumferential direction of the outer edge of the sucker; the ruler is provided with a slideway, the slideway is arranged along the length direction of the ruler, a sliding block which can move along the slideway is arranged on the slideway, and a mounting hole for mounting a chalk is arranged on the sliding block; the suction cup is located on the back side of the straightedge and one aperture of the mounting hole is located on the back side of the straightedge.

2. A multi-functional teaching aid as claimed in claim 1 wherein the shaft is perpendicular to the suction cup and one end of the shaft is fixed to the center of the suction cup; a plurality of angle scale marks are uniformly distributed along the circumferential direction of the sucker; the ruler is provided with a hollow structure, part or all of the hollow structure is positioned in front of the angle scale mark of the sucker, and the angle scale mark can be seen through the hollow structure; an angle pointer used for pointing to the angle scale marks is arranged in the hollow structure, and the angle pointer is fixed on the ruler.

3. The multifunctional teaching aid according to claim 1 or 2, wherein the mounting hole is a through hole, two orifices of the mounting hole are respectively a large orifice and a small orifice, and the aperture of the large orifice is larger than that of the small orifice; the inner wall of the mounting hole is made of elastic materials, and a plurality of bulges are distributed on the inner wall of the mounting hole.

4. A multifunctional teaching aid as claimed in claim 1 or 2 wherein a guide rod is mounted on the side of the slider remote from the suction cup, the guide rod running in the direction of extension of the slide, one end of the guide rod extending from the slide to the outside of the end of the straightedge remote from the suction cup.

5. The multifunctional teaching aid according to claim 4, wherein a fixing block and a jackscrew are arranged at one end of the ruler, which is far away from the sucker, and are respectively fixed at two sides of the guide rod, the fixing block is in contact with the guide rod, and the end of the jackscrew faces the guide rod.

6. A multifunctional teaching aid as claimed in claim 1 or 2 wherein the slide block is provided with a projection on its back side, the free end of the projection being hemispherical.

7. A multifunctional teaching aid as claimed in claim 1 or 2 wherein distance scale markings are provided along the length of the straightedge and a distance pointer is provided on the front side of the slider for pointing to the distance scale markings.