Primary school mathematics teaching aid

Abstract

The utility model relates to the technical field of teaching tools, in particular to a primary school mathematics teaching aid which comprises a power rod and a drawing rod, the top ends of the power rod and the drawing rod are rotatably connected, an iron nail foot is arranged at the bottom end of the power rod in a penetrating mode, and a fixing mechanism is installed at the top end of the iron nail foot and located in the power rod. A mounting sleeve is fixedly connected to the bottom end of the drawing rod, and a drawing pen is fixedly mounted on the inner side of the mounting sleeve; the fixing mechanism comprises a limiting block fixedly connected to the top end of the iron nail foot, a first spring is movably installed at the top end of the limiting block and located in the power rod, a clamping column is slidably connected into the limiting block, and a second spring is movably installed at the left end of the clamping column and located in the limiting block. Compared with the existing primary school mathematics teaching aid, the primary school mathematics teaching aid provided by the utility model has the advantages that the use safety of the teaching aid is improved through the design, meanwhile, the iron nail feet are protected, and the normal use of the teaching aid is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of teaching tools, in particular to elementary school mathematics teaching aids. Background Art

[0002] Mathematics is a discipline that studies concepts such as quantity, structure, change, space, and information. From a certain perspective, it is a kind of formal science. When we study mathematics, it is divided into elementary mathematics and advanced mathematics. In elementary mathematics teaching, teachers often have to draw straight lines, vertical lines, arcs, etc. on the blackboard. By drawing graphics, students can quickly learn plane figures, which requires the use of drawing devices.

[0003] Compasses, rulers, and protractors are commonly used in existing elementary school mathematics drawing teaching aids. Most of the existing compasses have iron nail feet, which have a good supporting effect. However, after use, the compasses are placed on the podium. Due to the curiosity of children, when they pick up the compasses to play during recess, they are easily scratched by the compasses' supporting feet. In addition, if the compass falls to the ground, the supporting feet will be deformed, affecting its use.

[0004] Therefore, it is particularly important to design primary school mathematics teaching aids to solve the above-mentioned defects. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the utility model designs a primary school mathematics teaching aid, which aims to solve the technical problems in the existing primary school mathematics teaching aid that the compass support feet are easy to scratch children, and the support feet are easy to deform after the compass falls, affecting its use.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] An elementary school mathematics teaching aid comprises a power rod and a drawing rod, wherein the power rod and the drawing rod are rotatably connected at their top ends, an iron nail foot is passed through the bottom end of the power rod, a fixing mechanism is installed at the top end of the iron nail foot and inside the power rod, the bottom end of the drawing rod is fixedly connected to a mounting sleeve, and a drawing pen is fixedly installed inside the mounting sleeve;

[0008] The fixing mechanism includes a limit block fixedly connected to the top of the iron nail foot, a first spring is movably installed at the top of the limit block and located inside the power rod, a clamping column is slidably connected to the inside of the limit block, a second spring is movably installed at the left end of the clamping column and located inside the limit block, and two groups of clamping holes are opened on the outside of the bottom end of the power rod.

[0009] As a preferred solution of the present invention, the power rod is rotatably connected to the top end of the drawing rod through a rotating shaft, the front end of the rotating shaft is threadedly connected to a fixing sleeve, the top ends of the power rod and the drawing rod on the opposite side are rotatably connected to transmission rods, and the two groups of transmission rods are rotatably connected.

[0010] As a preferred solution of the present invention, an auxiliary plate is fixedly connected to the outer side of the power rod, and a scale is provided on the surface of the auxiliary plate.

[0011] As a preferred solution of the present invention, a storage cylinder is fixedly connected to the outside of the drawing rod, and the upper and lower ends of the storage cylinder are fixedly connected to the drawing rod through first connecting columns. The top end of the storage cylinder is threadedly connected to a sealing cap.

[0012] As a preferred solution of the present invention, the limit block is slidably connected to the power rod through a movable groove, the first spring is movably installed on the inner side of the movable groove, and the two groups of clamping holes are the same size as the clamping column.

[0013] As a preferred solution of the present invention, the top end of the mounting sleeve is fixedly connected to the drawing rod via a second connecting column, and the top end of the mounting sleeve is fixedly connected to a mounting plug.

[0014] As a preferred solution of the present invention, a groove is provided at the bottom end of the outer side of the installation sleeve, a locking sleeve is threadedly connected to the outer side of the installation sleeve, and a plurality of groups of anti-slip vertical grooves are provided on the outer side of the locking sleeve.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] In the utility model, through the coordinated design of the drawing rod, the iron nail foot and the fixing mechanism, when drawing teaching is carried out, the clamping column is clamped into the lower clamping hole under the push of the second spring, thereby fixing the iron nail foot, and the iron nail foot provides a fulcrum for the power rod for drawing. When not in use, the clamping column is first pressed to retract it into the inner side of the limit block, and at the same time, the iron nail foot is pushed toward the inner side of the power rod until the clamping column is clamped into the upper clamping hole, and the iron nail foot is retracted into the interior of the power rod and fixed, thereby preventing children from being scratched by the iron nail foot when picking up the teaching aid to play, improving the safety of the teaching aid while protecting the iron nail foot, and ensuring the normal use of the teaching aid. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the fixing mechanism structure of the utility model;

[0019] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 This is a schematic diagram of the installation sleeve structure of the utility model.

[0021] In the figure: 1. Power rod; 101. Rotating shaft; 102. Fixing sleeve; 103. Transmission rod; 104. Auxiliary plate; 2. Drawing rod; 201. Storage cylinder; 202. First connecting column; 203. Sealing cover; 3. Iron nail foot; 4. Fixing mechanism; 401. Limit block; 402. First spring; 403. Clamping column; 404. Second spring; 405. Clamping hole; 406. Movable slot; 5. Mounting sleeve; 501. Second connecting column; 502. Mounting plug; 503. Slot; 504. Locking sleeve; 505. Anti-slip vertical slot; 6. Drawing pen. DETAILED DESCRIPTION

[0022] The following will combine the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] Example:

[0024] See also Figure 1-Figure 4 , the utility model provides a technical solution:

[0025] An elementary school mathematics teaching aid comprises a power rod 1 and a drawing rod 2. The top ends of the power rod 1 and the drawing rod 2 are rotatably connected. An iron nail foot 3 is passed through the bottom end of the power rod 1. A fixing mechanism 4 is installed at the top end of the iron nail foot 3 and inside the power rod 1. The bottom end of the drawing rod 2 is fixedly connected to a mounting sleeve 5, and a drawing pen 6 is fixedly installed on the inner side of the mounting sleeve 5.

[0026] First, in this embodiment, the specific structure of the fixing mechanism 4 is as follows:

[0027] The fixing mechanism 4 includes a limit block 401 fixedly connected to the top of the iron nail foot 3, a first spring 402 is movably installed at the top of the limit block 401 and located inside the power rod 1, a clamping column 403 is slidably connected to the inside of the limit block 401, and a second spring 404 is movably installed at the left end of the clamping column 403 and located inside the limit block 401. Two sets of clamping holes 405 are opened on the outside of the bottom end of the power rod 1. When drawing teaching is carried out, the clamping column 403 is clamped into the lower clamping hole 405 under the push of the second spring 404, thereby The iron nail foot 3 is fixed, and the iron nail foot 3 provides a fulcrum for the power rod 1 for drawing. When not in use, the clamping column 403 is pressed first to retract it into the inner side of the limit block 401, and at the same time, the iron nail foot 3 is pushed toward the inner side of the power rod 1 until the clamping column 403 is clamped into the upper clamping hole 405, and the iron nail foot 3 is retracted into the interior of the power rod 1 and fixed, thereby preventing children from being scratched by the iron nail foot 3 when picking up the teaching aids to play, thereby improving the safety of the teaching aids and protecting the iron nail foot 3, ensuring the normal use of the teaching aids.

[0028] Furthermore, the power rod 1 is rotatably connected to the top of the drawing rod 2 through the rotating shaft 101, and the front end of the rotating shaft 101 is threadedly connected to a fixing sleeve 102. The tops of the opposite sides of the power rod 1 and the drawing rod 2 are rotatably connected to the transmission rod 103, and the two sets of transmission rods 103 are rotatably connected. The power rod 1 is rotatably connected to the drawing rod 2 through the rotating shaft 101. Loosening the fixing sleeve 102 allows the power rod 1 and the drawing rod 2 to open to control the drawing radius. After adjusting the size of the opening between the power rod 1 and the drawing rod 2, tightening the fixing sleeve 102 to ensure the stability of the drawing. At the same time, when the power rod 1 and the drawing rod 2 are opened, the two sets of transmission rods 103 are linked together to avoid the power rod 1 and the drawing rod 2 being too flexible and inconvenient to control.

[0029] Furthermore, an auxiliary plate 104 is fixedly connected to the outer side of the power rod 1, and a scale is provided on the surface of the auxiliary plate 104. When teaching drawing, the power rod 1 and the drawing rod 2 can be combined and fixed, and the auxiliary plate 104 can be used to draw a straight line, thereby further improving the practicality of the teaching aid.

[0030] Then, a storage cylinder 201 is fixedly connected to the outside of the drawing rod 2. The upper and lower ends of the storage cylinder 201 are fixedly connected to the drawing rod 2 through a first connecting column 202. The top of the storage cylinder 201 is threadedly connected to a cover 203. The storage cylinder 201 is fixed to the outside of the drawing rod 2 through the first connecting column 202. The drawing pen 6 can be stored inside it for standby use. The top of the storage cylinder 201 is sealed by the cover 203, which further improves the practicality of the teaching aid.

[0031] Furthermore, the limit block 401 is slidably connected to the power rod 1 through the movable groove 406, and the first spring 402 is movably installed on the inner side of the movable groove 406. The two sets of card holes 405 are the same size as the card column 403. The limit block 401 slides up and down inside the movable groove 406, and the card column 403 is inserted into different card holes 405, so that the iron nail foot 3 can be extended for use or retracted for storage.

[0032] Secondly, the top of the mounting sleeve 5 is fixedly connected to the drawing rod 2 through the second connecting column 501. The top of the mounting sleeve 5 is fixedly connected with a mounting plug 502. The mounting sleeve 5 is installed on the outside of the drawing rod 2 through the second connecting column 501. When installing the drawing pen 6, it is inserted into the inner side of the mounting sleeve 5 through the mounting plug 502.

[0033] Finally, a slot 503 is provided at the bottom end of the outer side of the mounting sleeve 5, and a locking sleeve 504 is threadedly connected to the outer side of the mounting sleeve 5. A plurality of groups of anti-slip vertical grooves 505 are provided on the outer side of the locking sleeve 504. After the drawing pen 6 is installed into the inner side of the mounting sleeve 5, tightening the locking sleeve 504 can tighten the slot 503, thereby tightening the bottom end of the mounting sleeve 5 to fix the drawing pen 6, which facilitates the installation of the drawing pen 6 while ensuring the stability of drawing teaching.

[0034] In this embodiment, the implementation scenario is specifically as follows: first, insert the drawing pen 6 into the inner side of the installation sleeve 5 through the installation plug 502, and then tighten the locking sleeve 504 to tighten the slot 503, thereby tightening the bottom end of the installation sleeve 5 to fix the drawing pen 6, which is convenient for installing the drawing pen 6 while ensuring the stability of drawing teaching. When drawing teaching is being carried out, the clamping column 403 is clamped into the lower clamping hole 405 under the push of the second spring 404, thereby fixing the iron nail foot 3, and providing a fulcrum for the power rod 1 for drawing through the iron nail foot 3. When not in use, press the clamping column 403 to retract it into the inner side of the limit block 401, and at the same time push the iron nail foot 3 toward the inner side of the power rod 1 until the clamping column 403 is locked into the upper clamping hole 405, and the iron nail foot 3 is retracted into the interior of the power rod 1 and fixed, thereby preventing children from being scratched by the iron nail foot 3 when picking up the teaching aid to play. The whole operation process is simple and convenient. Compared with the existing primary school mathematics teaching aids, the utility model improves the safety of the use of teaching aids through design, and at the same time protects the iron nail foot 3, ensuring the normal use of the teaching aids.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A primary school mathematics teaching aid, comprising a power rod (1) and a drawing rod (2), characterized in that: The power rod (1) and the top end of the drawing rod (2) are rotatably connected, the bottom end of the power rod (1) is provided with an iron nail foot (3), the top end of the iron nail foot (3) and the interior of the power rod (1) are provided with a fixing mechanism (4), the bottom end of the drawing rod (2) is fixedly connected with a mounting sleeve (5), and a drawing pen (6) is fixedly installed on the inner side of the mounting sleeve (5); The fixing mechanism (4) comprises a limit block (401) fixedly connected to the top end of the iron nail foot (3); a first spring (402) is movably installed at the top end of the limit block (401) and located inside the power rod (1); a clamping column (403) is slidably connected inside the limit block (401); a second spring (404) is movably installed at the left end of the clamping column (403) and located inside the limit block (401); and two groups of clamping holes (405) are opened on the outer side of the bottom end of the power rod (1).

2. The primary school mathematics teaching aid according to claim 1, wherein: The power rod (1) is rotatably connected to the top end of the drawing rod (2) via a rotating shaft (101); a fixing sleeve (102) is threadedly connected to the front end of the rotating shaft (101); the top ends of the power rod (1) and the drawing rod (2) on opposite sides are both rotatably connected to transmission rods (103), and two groups of transmission rods (103) are rotatably connected to each other.

3. The primary school mathematics teaching aid according to claim 1, wherein: An auxiliary plate (104) is fixedly connected to the outer side of the power rod (1), and a scale is provided on the surface of the auxiliary plate (104).

4. The primary school mathematics teaching aid according to claim 1, wherein: The outer side of the drawing rod (2) is fixedly connected to a storage cylinder (201), the upper and lower ends of the storage cylinder (201) are fixedly connected to the drawing rod (2) via first connecting columns (202), and the top end of the storage cylinder (201) is threadedly connected to a sealing cap (203).

5. The primary school mathematics teaching aid according to claim 1, wherein: The limit block (401) is slidably connected to the power rod (1) through a movable groove (406), the first spring (402) is movably installed on the inner side of the movable groove (406), and the two groups of clamping holes (405) are the same size as the clamping column (403).

6. The primary school mathematics teaching aid according to claim 1, wherein: The top end of the mounting sleeve (5) is fixedly connected to the drawing rod (2) via a second connecting column (501), and the top end of the mounting sleeve (5) is fixedly connected to a mounting plug (502).

7. The primary school mathematics teaching aid according to claim 1, characterized in that: A slot (503) is provided at the bottom end of the outer side of the installation sleeve (5), a locking sleeve (504) is threadedly connected to the outer side of the installation sleeve (5), and a plurality of groups of anti-slip vertical slots (505) are provided on the outer side of the locking sleeve (504).

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