CN216359881U

CN216359881U - A mathematics teaching aid for training of mathematics thinking

Info

Publication number: CN216359881U
Application number: CN202123143691.5U
Authority: CN
Inventors: 胡芳; 陈芸; 邓敏英; 洪欢; 魏天慧; 王宇; 李傲
Original assignee: Wuhan Bioengineering Institute
Current assignee: Wuhan Bioengineering Institute
Priority date: 2021-12-14
Filing date: 2021-12-14
Publication date: 2022-04-22
Anticipated expiration: 2031-12-14

Abstract

The utility model provides a mathematics teaching aid for mathematics thinking training, which relates to the technical field of mathematics teaching aids and comprises a compass handle, a positioning structure and a ruler structure, wherein a supporting arm is rotatably connected to the edge of one side, close to the inside of the compass handle, the supporting arm extends to the lower part of the compass handle, and a carving arm is rotatably connected to the edge of the other side, close to the inside of the compass handle. According to the utility model, when the positioning needle is not used, the positioning needle is contracted in the supporting arm, the probability of puncture injury of the positioning needle by students is reduced, the safety in use is increased, when the positioning needle is required to be used, the connecting rod and the positioning needle are driven to move through the sliding rod, the positioning needle extends out of the supporting arm, the clamping block is clamped with the clamping groove, the position of the positioning needle is fixed, and a circle can be drawn by using the circle drawing scale, meanwhile, the scale provided by the utility model rotates through the bearing, keeps the same level with the supporting arm, and reduces the width so as to be convenient to store.

Description

A mathematics teaching aid for training of mathematics thinking

Technical Field

The utility model relates to the technical field of math teaching aids, in particular to a math teaching aid for math thinking training.

Background

The mathematics teaching aid comprises a ruler, compasses, an abacus and the like, and is an essential tool for learning mathematics knowledge.

Among the prior art, the compasses teaching aid passes through the pilot pin to be fixed and draws the circle on paper, and the pilot pin syringe needle is sharp-pointed sharp, but does not set up protective structure mostly, and especially young student is when using the compasses, and the needle that is positioned very probably stabs, probably causes the irretrievable health damage under the severe condition, consequently, needs to improve on the basis of current compasses mathematics teaching aid.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art, and the positioning needle is contracted inside the supporting arm when not used, so that the probability of puncture injury of students is reduced.

In order to achieve the purpose, the utility model adopts the following technical scheme: a mathematics teaching aid for mathematics thinking training comprises a compass handle, a positioning structure and a ruler structure, wherein the inside of the compass handle is close to one side edge and is rotatably connected with a supporting arm, the supporting arm extends to the lower part of the compass handle, the inside of the compass handle is close to the other side edge and is rotatably connected with a carving arm, the carving arm extends to the lower part of the compass handle, the positioning structure comprises a connecting rod, the connecting rod is positioned inside the supporting arm, the top of the connecting rod is movably connected with the inner top surface of the supporting arm, a sliding rod is fixed on the outer surface of one side of the connecting rod close to the edge of the top, a first groove is formed on the outer surface of one side of the connecting rod close to the center, two first springs are fixed on the inner surface wall of one side of the first groove, a clamping block is fixed between one ends of the two first springs, and a positioning pin is fixed at the bottom of the connecting rod, the bottom of connecting rod is fixed with the second spring, and the one end of second spring and the inside bottom surface fixed connection of support arm, the pilot pin is located inside the second spring.

As a preferred embodiment, the outer surface of one side of the support arm near the top edge is provided with a sliding groove, and the outer surface of one side of the support arm near the center is provided with a clamping groove.

The technical effect of adopting the further scheme is as follows: the sliding groove and the clamping groove are respectively used for connecting the sliding rod and the clamping block.

As a preferred embodiment, the outer surface of the sliding rod is slidably connected with the inner surface wall of the sliding groove, and the sliding rod penetrates through the sliding groove to the outside of the supporting arm.

The technical effect of adopting the further scheme is as follows: the sliding groove and the sliding rod provide a moving space to drive the connecting rod and the positioning needle to move.

As a preferred implementation mode, the ruler structure comprises a bearing, the rear surface of the bearing is fixedly connected with the front surface of the supporting arm, and a graduated scale is movably sleeved on the outer surface of the bearing.

The technical effect of adopting the further scheme is as follows: the bearing graduated scale can rotate.

As a preferable embodiment, a second groove is formed in the front surface of the engraving arm, a telescopic rod is fixed to the inner surface wall of the second groove, one end of the telescopic rod extends to the outside of the second groove, and a handle is fixed to one end of the telescopic rod.

The technical effect of adopting the further scheme is as follows: the telescopic rod is contracted to release the rotation limit of the graduated scale.

As a preferred embodiment, the inner surface wall of the graduated scale is movably connected with one end of the telescopic rod.

The technical effect of adopting the further scheme is as follows: the telescopic rod and the bearing fix the position of the graduated scale together.

Compared with the prior art, the utility model has the advantages and positive effects that,

when the positioning needle is required to be used, the connecting rod and the positioning needle are driven to move through the sliding rod, the positioning needle extends out of the supporting arm, the clamping block is clamped with the clamping groove, the position of the positioning needle is fixed, a circle can be drawn by using the circle drawing scale, meanwhile, the scale provided by the utility model rotates through the bearing and is kept at the same level with the supporting arm, and the width is reduced, so that the circle drawing scale is convenient to store.

Drawings

FIG. 1 is a schematic perspective view of a mathematical teaching aid for training mathematical thinking according to the present invention;

FIG. 2 is a schematic perspective view of a positioning structure of a mathematical teaching aid for training mathematical thinking according to the present invention;

fig. 3 is an enlarged schematic view of the structure at a in fig. 1 of the mathematical teaching aid for training mathematical thinking provided by the utility model.

Illustration of the drawings:

1. a compass handle; 2. a support arm; 3. a carving arm; 4. a positioning structure; 5. a chute; 6. a card slot; 7. a straightedge structure; 41. a connecting rod; 42. a slide bar; 43. a first groove; 44. a first spring; 45. a clamping block; 46. a positioning pin; 47. a second spring; 71. a bearing; 72. a graduated scale; 73. a second groove; 74. a telescopic rod; 75. a handle.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

As shown in fig. 1 and 2, the present invention provides a technical solution: a mathematics teaching aid for mathematics thinking training comprises a compass handle 1, a positioning structure 4 and a ruler structure 7, wherein the inside of the compass handle 1 is close to one side edge and is rotatably connected with a supporting arm 2, the supporting arm 2 extends to the lower part of the compass handle 1, the inside of the compass handle 1 is close to the other side edge and is rotatably connected with a carving arm 3, the carving arm 3 extends to the lower part of the compass handle 1, the positioning structure 4 comprises a connecting rod 41, the connecting rod 41 is positioned inside the supporting arm 2, the top of the connecting rod 41 is movably connected with the inner top surface of the supporting arm 2, a sliding rod 42 is fixed on the outer surface of one side of the connecting rod 41 close to the edge of the top, a first groove 43 is arranged on the outer surface of one side of the connecting rod 41 close to the center, two first springs 44 are fixed on the inner surface wall of one side of the first groove 43, a fixture block 45 is fixed between one ends of the two first springs 44, a positioning needle 46 is fixed on the bottom of the connecting rod 41, the bottom of connecting rod 41 is fixed with second spring 47, and the one end of second spring 47 and the inside bottom surface fixed connection of support arm 2, and pilot pin 46 is located inside second spring 47, and one side surface of support arm 2 is close to top edge and has seted up spout 5, and one side surface of support arm 2 is close to center department and has seted up draw-in groove 6, and the surface of slide bar 42 and the interior table wall sliding connection of spout 5, slide bar 42 runs through the outside to support arm 2 through spout 5.

In this embodiment, through the elasticity of first spring 44, fixture block 45 contracts and pops out first recess 43 and draw-in groove 6 separation block, simultaneously because the elasticity of second spring 47, after fixture block 45 and draw-in groove 6 separation, second spring 47 bounces and drives connecting rod 41 rebound, impels the pilot pin 46 to withdraw inside the support arm 2, reduces the probability that the student was pricked.

Example 2

As shown in fig. 1 and 3, the ruler structure 7 includes a bearing 71, a rear surface of the bearing 71 is fixedly connected with a front surface of the support arm 2, a graduated scale 72 is movably sleeved on an outer surface of the bearing 71, a second groove 73 is formed in a front surface of the depicting arm 3, an expansion link 74 is fixed on an inner surface wall of the second groove 73, one end of the expansion link 74 extends to the outside of the second groove 73, a handle 75 is fixed on one end of the expansion link 74, and the inner surface wall of the graduated scale 72 is movably connected with one end of the expansion link 74.

In this embodiment, bearing 71 is the structure of both ends thickness centre thinness, the centre department at bearing 71 is established to scale 72 cover, avoid dropping, the one end that telescopic link 74 extends is the same with scale 72's diameter, the structure is more firm when connecting, telescopic link 74 and bearing 71 carry on spacingly to scale 72's position, make scale 72 keep straight, telescopic link 74 contracts and no longer plays the limiting displacement in second recess 73 is inside, scale 72 accessible bearing 71 rotates, telescopic link 74 top is provided with handle 75, just pull out after telescopic link 74 contracts.

The working principle is as follows:

as shown in fig. 1, 2 and 3, the positioning pin 46 is retracted inside the support arm 2 in general, when the compass needs to be used, the slide rail 42 is driven to slide downwards by the slide slot 5, so that the connecting rod 41 and the positioning pin 46 move downwards to compress the second spring 47, and the positioning pin 46 extends outside the support arm 2, during the downward movement, the position of the first groove 43 coincides with the position of the slot 6, the first spring 44 drives the latch 45 to bounce outside the first groove 43, the latch 45 is engaged with the slot 6, the positions of the connecting rod 41 and the positioning pin 46 are fixed, the support arm 2 and the depicting arm 3 are rotated to draw a circle, after the compass is used, the latch 45 is pressed towards the inside of the first groove 43, the positions of the connecting rod 41 and the positioning pin 46 are not fixed, the compressed second spring 47 bounces, the positioning pin 46 is retracted inside the support arm 2, and the telescopic rod 74 is pressed towards the inside of the second groove 73, telescopic link 74 is not being connected with scale 72, can't play limiting displacement, and ninety degrees rotate scale 72, make scale 72 and support arm 2 keep same level, convenient storage.

Although the present invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the utility model.

Claims

1. The utility model provides a mathematics teaching aid for mathematics thinking training, includes compasses handle (1), location structure (4) and ruler structure (7), its characterized in that: the inside of the compass handle (1) is close to one side edge and is rotatably connected with a supporting arm (2), the supporting arm (2) extends to the lower part of the compass handle (1), the inside of the compass handle (1) is close to the other side edge and is rotatably connected with an engraving arm (3), the engraving arm (3) extends to the lower part of the compass handle (1), the positioning structure (4) comprises a connecting rod (41), the connecting rod (41) is positioned inside the supporting arm (2), the top of the connecting rod (41) is movably connected with the inner top surface of the supporting arm (2), a sliding rod (42) is fixed on the outer surface of one side of the connecting rod (41) close to the edge of the top, a first groove (43) is formed in the outer surface of one side of the connecting rod (41) close to the center, two first springs (44) are fixed on the inner surface wall of one side of the first groove (43), and a clamping block (45) is fixed between one ends of the two first springs (44), the bottom of connecting rod (41) is fixed with pilot pin (46), the bottom of connecting rod (41) is fixed with second spring (47), and the inside bottom surface fixed connection of the one end of second spring (47) and support arm (2), pilot pin (46) are located inside second spring (47).

2. A math teaching aid for mathematical thinking training according to claim 1, which is characterized in that: the outer surface of one side of support arm (2) is close to top edge and has seted up spout (5), the outer surface of one side of support arm (2) is close to center department and has seted up draw-in groove (6).

3. A math teaching aid for mathematical thinking training according to claim 2, wherein: the outer surface of the sliding rod (42) is in sliding connection with the inner surface wall of the sliding groove (5), and the sliding rod (42) penetrates through the sliding groove (5) to the outside of the supporting arm (2).

4. A math teaching aid for mathematical thinking training according to claim 1, which is characterized in that: ruler structure (7) include bearing (71), the rear surface of bearing (71) and the front surface fixed connection of support arm (2), the surface activity cover of bearing (71) is equipped with scale (72).

5. A math teaching aid for mathematical thinking training according to claim 4, wherein: the front surface of the engraving arm (3) is provided with a second groove (73), an inner surface wall of the second groove (73) is fixed with a telescopic rod (74), one end of the telescopic rod (74) extends to the outside of the second groove (73), and one end of the telescopic rod (74) is fixed with a handle (75).

6. A math teaching aid for mathematical thinking training according to claim 5, which is characterized in that: the inner surface wall of the graduated scale (72) is movably connected with one end of the telescopic rod (74).